2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 785
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the EBCM.
7. Verify the scan tool BMC Primary Piston Position Sensor B parameter is less than 1 V.
瀚慖f greater than the specified range, test the signal circuit terminal 1 for a short to voltage. If the circuit tests normal, replace the EBCM.
8. Install a 3A fused jumper wire between the signal circuit terminal 1 and the 5 V reference circuit terminal 2. Verify the scan tool BMC
Primary Piston Position Sensor B parameter is greater than 4.5 V.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the EBCM.
9. If all circuits test normal, replace the brake master cylinder piston position sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Brake Master Cylinder Primary Piston Position Sensor Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction Control
Systems/Braking Sensor/Switch/Service and Repair)
* Brake Pressure Modulator Valve Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Hydraulic
Control Assembly - Antilock Brakes/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
C12B2
DTC C012A, C128B, C128E, or C12B2-C12B4
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC C012A 00
- Master Cylinder Pressure Sensor
DTC C128E
- Master Cylinder Pressure Sensor
DTC C012A 01
- Master Cylinder Pressure Sensor Short to Battery
DTC C12B3
- Master Cylinder Pressure Sensor Short to Battery
DTC C012A 06
- Master Cylinder Pressure Sensor Short to Ground or Open
DTC C12B2
- Master Cylinder Pressure Sensor Short to Ground or Open
DTC C012A 11
- Master Cylinder Pressure Sensor Above Maximum Threshold
DTC C128B
- Master Cylinder Pressure Sensor Above Maximum Threshold
DTC C012A 0F
- Master Cylinder Pressure Sensor Erratic
DTC C12B4
- Master Cylinder Pressure Sensor Erratic
Showing posts with label test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal. Show all posts
Showing posts with label test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal. Show all posts
Tuesday, December 10, 2019
Saturday, November 30, 2019
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 571
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 571
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the HSM.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the HSM.
8. If all circuits test normal, replace the HSM.
B2430 0A, B2430 0B, B2430 0C, B2430 0D, B2430 0E, B2430 04, or B2430 1F
1. Ignition OFF, disconnect the X1 harness connector at the HSM.
Important: Element resistance must be measured twice to ensure that all failure conditions are simulated. First with the seat
unoccupied, then with the seat occupied.
2. Test for 2.0 - 8.0 Ohms between control circuit terminal 3 and control circuit terminal 2.
瀚慖f less than the specified range, test for a short between the control circuits. If the circuits test normal, replace the seat cushion heater
element.
瀚慖f greater than the specified range, test the control circuits for an open/high resistance. If the circuits test normal, replace the seat cushion
heater element.
3. Disconnect the X2, X4 harness connectors at the HSM.
4. Test for 850 Ohms - 300 kOhms between the signal circuit terminal 20 X4 and the low reference circuit terminal 8 X2.
瀚慖f less than the specified range, test for a short between the signal and low reference circuits. If the circuits test normal, replace the seat
cushion heater element/temperature sensor.
瀚慖f greater than the specified range, test the signal and low reference circuits for a short to voltage or an open/high resistance. If the circuits
test normal, replace the seat cushion heater element/temperature sensor.
5. Connect the X1, X2, X4 harness connectors at the HSM.
6. Disconnect the harness connector at the seat cushion heater element/temperature sensor.
7. Ignition ON, test for 4.8 - 5.2 V between the signal circuit terminal C and ground.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the HSM.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the HSM.
8. If all circuits test normal, replace the HSM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Driver or Passenger Seat Cushion Heater Replacement (without HP2) ()Driver or Passenger Seat Cushion Heater Replacement (with HP2)
()
* Control Module References (See: Testing and Inspection/Programming and Relearning) for the HSM replacement, setup, and programming
Dealer Installed
DTC B2425 or B2430 (Dealer Installed)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC B2425 04
- Left Seat Heater Cushion Circuit Open
DTC B2425 0A
- Left Seat Heater Cushion Circuit Rate of Change Below Threshold
DTC B2425 0B
- Left Seat Heater Cushion Circuit Current Above Threshold
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the HSM.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the HSM.
8. If all circuits test normal, replace the HSM.
B2430 0A, B2430 0B, B2430 0C, B2430 0D, B2430 0E, B2430 04, or B2430 1F
1. Ignition OFF, disconnect the X1 harness connector at the HSM.
Important: Element resistance must be measured twice to ensure that all failure conditions are simulated. First with the seat
unoccupied, then with the seat occupied.
2. Test for 2.0 - 8.0 Ohms between control circuit terminal 3 and control circuit terminal 2.
瀚慖f less than the specified range, test for a short between the control circuits. If the circuits test normal, replace the seat cushion heater
element.
瀚慖f greater than the specified range, test the control circuits for an open/high resistance. If the circuits test normal, replace the seat cushion
heater element.
3. Disconnect the X2, X4 harness connectors at the HSM.
4. Test for 850 Ohms - 300 kOhms between the signal circuit terminal 20 X4 and the low reference circuit terminal 8 X2.
瀚慖f less than the specified range, test for a short between the signal and low reference circuits. If the circuits test normal, replace the seat
cushion heater element/temperature sensor.
瀚慖f greater than the specified range, test the signal and low reference circuits for a short to voltage or an open/high resistance. If the circuits
test normal, replace the seat cushion heater element/temperature sensor.
5. Connect the X1, X2, X4 harness connectors at the HSM.
6. Disconnect the harness connector at the seat cushion heater element/temperature sensor.
7. Ignition ON, test for 4.8 - 5.2 V between the signal circuit terminal C and ground.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the HSM.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the HSM.
8. If all circuits test normal, replace the HSM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Driver or Passenger Seat Cushion Heater Replacement (without HP2) ()Driver or Passenger Seat Cushion Heater Replacement (with HP2)
()
* Control Module References (See: Testing and Inspection/Programming and Relearning) for the HSM replacement, setup, and programming
Dealer Installed
DTC B2425 or B2430 (Dealer Installed)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC B2425 04
- Left Seat Heater Cushion Circuit Open
DTC B2425 0A
- Left Seat Heater Cushion Circuit Rate of Change Below Threshold
DTC B2425 0B
- Left Seat Heater Cushion Circuit Current Above Threshold
Friday, November 29, 2019
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2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 560
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the HSM.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the HSM.
8. If all circuits test normal, replace the HSM.
B2430 0A, B2430 0B, B2430 0C, B2430 0D, B2430 0E, B2430 04, or B2430 1F
1. Ignition OFF, disconnect the X1 harness connector at the HSM.
Important: Element resistance must be measured twice to ensure that all failure conditions are simulated. First with the seat
unoccupied, then with the seat occupied.
2. Test for 2.0 - 8.0 Ohms between control circuit terminal 3 and control circuit terminal 2.
瀚慖f less than the specified range, test for a short between the control circuits. If the circuits test normal, replace the seat cushion heater
element.
瀚慖f greater than the specified range, test the control circuits for an open/high resistance. If the circuits test normal, replace the seat cushion
heater element.
3. Disconnect the X2, X4 harness connectors at the HSM.
4. Test for 850 Ohms - 300 kOhms between the signal circuit terminal 20 X4 and the low reference circuit terminal 8 X2.
瀚慖f less than the specified range, test for a short between the signal and low reference circuits. If the circuits test normal, replace the seat
cushion heater element/temperature sensor.
瀚慖f greater than the specified range, test the signal and low reference circuits for a short to voltage or an open/high resistance. If the circuits
test normal, replace the seat cushion heater element/temperature sensor.
5. Connect the X1, X2, X4 harness connectors at the HSM.
6. Disconnect the harness connector at the seat cushion heater element/temperature sensor.
7. Ignition ON, test for 4.8 - 5.2 V between the signal circuit terminal C and ground.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the HSM.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the HSM.
8. If all circuits test normal, replace the HSM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Driver or Passenger Seat Cushion Heater Replacement (without HP2) ()Driver or Passenger Seat Cushion Heater Replacement (with HP2)
()
* Control Module References (See: Testing and Inspection/Programming and Relearning) for the HSM replacement, setup, and programming
Dealer Installed
DTC B2425 or B2430 (Dealer Installed)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC B2425 04
- Left Seat Heater Cushion Circuit Open
DTC B2425 0A
- Left Seat Heater Cushion Circuit Rate of Change Below Threshold
DTC B2425 0B
- Left Seat Heater Cushion Circuit Current Above Threshold
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the HSM.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the HSM.
8. If all circuits test normal, replace the HSM.
B2430 0A, B2430 0B, B2430 0C, B2430 0D, B2430 0E, B2430 04, or B2430 1F
1. Ignition OFF, disconnect the X1 harness connector at the HSM.
Important: Element resistance must be measured twice to ensure that all failure conditions are simulated. First with the seat
unoccupied, then with the seat occupied.
2. Test for 2.0 - 8.0 Ohms between control circuit terminal 3 and control circuit terminal 2.
瀚慖f less than the specified range, test for a short between the control circuits. If the circuits test normal, replace the seat cushion heater
element.
瀚慖f greater than the specified range, test the control circuits for an open/high resistance. If the circuits test normal, replace the seat cushion
heater element.
3. Disconnect the X2, X4 harness connectors at the HSM.
4. Test for 850 Ohms - 300 kOhms between the signal circuit terminal 20 X4 and the low reference circuit terminal 8 X2.
瀚慖f less than the specified range, test for a short between the signal and low reference circuits. If the circuits test normal, replace the seat
cushion heater element/temperature sensor.
瀚慖f greater than the specified range, test the signal and low reference circuits for a short to voltage or an open/high resistance. If the circuits
test normal, replace the seat cushion heater element/temperature sensor.
5. Connect the X1, X2, X4 harness connectors at the HSM.
6. Disconnect the harness connector at the seat cushion heater element/temperature sensor.
7. Ignition ON, test for 4.8 - 5.2 V between the signal circuit terminal C and ground.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the HSM.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the HSM.
8. If all circuits test normal, replace the HSM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Driver or Passenger Seat Cushion Heater Replacement (without HP2) ()Driver or Passenger Seat Cushion Heater Replacement (with HP2)
()
* Control Module References (See: Testing and Inspection/Programming and Relearning) for the HSM replacement, setup, and programming
Dealer Installed
DTC B2425 or B2430 (Dealer Installed)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC B2425 04
- Left Seat Heater Cushion Circuit Open
DTC B2425 0A
- Left Seat Heater Cushion Circuit Rate of Change Below Threshold
DTC B2425 0B
- Left Seat Heater Cushion Circuit Current Above Threshold
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瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the HSM.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the HSM.
8. If all circuits test normal, replace the HSM.
B2180 0A, B2180 0B, B2180 0C, B2180 0D, B2180 0E, B2180 04, or B2180 1F
1. Ignition OFF, disconnect the X1 harness connector at the HSM.
Important: Element resistance must be measured twice to ensure that all failure conditions are simulated. First with the seat
unoccupied, then with the seat occupied.
2. Test for 3.5 - 11.5 Ohms between control circuit terminal 3 and control circuit terminal 4.
瀚慖f less than the specified range, test for a short between the control circuits. If the circuits test normal, replace the seat back heater
element.
瀚慖f greater than the specified range, test the control circuits for an open/high resistance. If the circuits test normal, replace the seat back
heater element.
3. Disconnect the X2, X4 harness connectors at the HSM.
4. Test for 850 - 300 kOhms between the signal circuit terminal 10 X4 and the low reference circuit terminal 7 X2.
瀚慖f less than the specified range, test for a short between the signal and low reference circuits. If the circuits test normal, replace the seat
back heater element/temperature sensor.
瀚慖f greater than the specified range, test the signal and low reference circuits for a short to voltage or an open/high resistance. If the circuits
test normal, replace the seat back heater element/temperature sensor.
5. Connect the X1, X2, X4 harness connectors at the HSM.
6. Disconnect the harness connector at the seat back heater element/temperature sensor.
7. Ignition ON, test for 4.8 - 5.2 V between the signal circuit terminal C and ground.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the HSM.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the HSM.
8. If all circuits test normal, replace the HSM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Driver or Passenger Seat Back Cushion Heater Replacement (Escalade with HP2) ()Driver or Passenger Seat Back Cushion Heater
Replacement (Tahoe with HP2) ()Driver or Passenger Seat Back Cushion Heater Replacement (without HP2) ()
* Control Module References (See: Testing and Inspection/Programming and Relearning) for the HSM replacement, setup, and programming
Dealer Installed
DTC B1935 or B2180 (Dealer Installed)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC B1935 04
- Left Seat Back Heater Circuit Open
DTC B1935 0A
- Left Seat Back Heater Circuit Rate of Change Below Threshold
DTC B1935 0B
- Left Seat Back Heater Circuit Current Above Threshold
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the HSM.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the HSM.
8. If all circuits test normal, replace the HSM.
B2180 0A, B2180 0B, B2180 0C, B2180 0D, B2180 0E, B2180 04, or B2180 1F
1. Ignition OFF, disconnect the X1 harness connector at the HSM.
Important: Element resistance must be measured twice to ensure that all failure conditions are simulated. First with the seat
unoccupied, then with the seat occupied.
2. Test for 3.5 - 11.5 Ohms between control circuit terminal 3 and control circuit terminal 4.
瀚慖f less than the specified range, test for a short between the control circuits. If the circuits test normal, replace the seat back heater
element.
瀚慖f greater than the specified range, test the control circuits for an open/high resistance. If the circuits test normal, replace the seat back
heater element.
3. Disconnect the X2, X4 harness connectors at the HSM.
4. Test for 850 - 300 kOhms between the signal circuit terminal 10 X4 and the low reference circuit terminal 7 X2.
瀚慖f less than the specified range, test for a short between the signal and low reference circuits. If the circuits test normal, replace the seat
back heater element/temperature sensor.
瀚慖f greater than the specified range, test the signal and low reference circuits for a short to voltage or an open/high resistance. If the circuits
test normal, replace the seat back heater element/temperature sensor.
5. Connect the X1, X2, X4 harness connectors at the HSM.
6. Disconnect the harness connector at the seat back heater element/temperature sensor.
7. Ignition ON, test for 4.8 - 5.2 V between the signal circuit terminal C and ground.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the HSM.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the HSM.
8. If all circuits test normal, replace the HSM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Driver or Passenger Seat Back Cushion Heater Replacement (Escalade with HP2) ()Driver or Passenger Seat Back Cushion Heater
Replacement (Tahoe with HP2) ()Driver or Passenger Seat Back Cushion Heater Replacement (without HP2) ()
* Control Module References (See: Testing and Inspection/Programming and Relearning) for the HSM replacement, setup, and programming
Dealer Installed
DTC B1935 or B2180 (Dealer Installed)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC B1935 04
- Left Seat Back Heater Circuit Open
DTC B1935 0A
- Left Seat Back Heater Circuit Rate of Change Below Threshold
DTC B1935 0B
- Left Seat Back Heater Circuit Current Above Threshold
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瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the BCM.
6. If all circuits test normal, test or replace the headlamp and panel dimmer switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Headlamp Switch Replacement (Cadillac) (See: Lighting and Horns/Headlamp/Headlamp Switch/Service and Repair/Headlamp Switch
Replacement (Cadillac))Headlamp Switch Replacement (Except Cadillac) (See: Lighting and Horns/Headlamp/Headlamp Switch/Service
and Repair/Headlamp Switch Replacement (Except Cadillac))
* Control Module References (See: Testing and Inspection/Programming and Relearning) for BCM replacement, setup, and programming
Power Seats
DTC B1395
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC B1395 02
- Device Voltage Reference Output Circuit Short to Ground
DTC B1395 05
- Device Voltage Reference Output Circuit Short to Battery or Open
Diagnostic Fault Information
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the BCM.
6. If all circuits test normal, test or replace the headlamp and panel dimmer switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Headlamp Switch Replacement (Cadillac) (See: Lighting and Horns/Headlamp/Headlamp Switch/Service and Repair/Headlamp Switch
Replacement (Cadillac))Headlamp Switch Replacement (Except Cadillac) (See: Lighting and Horns/Headlamp/Headlamp Switch/Service
and Repair/Headlamp Switch Replacement (Except Cadillac))
* Control Module References (See: Testing and Inspection/Programming and Relearning) for BCM replacement, setup, and programming
Power Seats
DTC B1395
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC B1395 02
- Device Voltage Reference Output Circuit Short to Ground
DTC B1395 05
- Device Voltage Reference Output Circuit Short to Battery or Open
Diagnostic Fault Information
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瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the rear seat audio (RSA) module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the rear seat audio (RSA)
module.
6. Ignition OFF, reconnect the X2 harness connector at the rear seat audio (RSA) module.
7. Disconnect the X2 harness connector at the amplifier.
8. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left rear low level audio signal (+) - terminal 15
* Left rear low level audio signal (-) - terminal 14
* Right rear low level audio signal (+) - terminal 16
* Right rear low level audio signal (-) - terminal 8
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the rear seat audio (RSA) module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the rear seat audio (RSA)
module.
9. If all circuits test normal, replace the amplifier.
DTC Set by Audio Amplifier UQA
1. Ignition OFF, disconnect the X1 and X2 connectors at the amplifier.
2. Radio ON, test for less than 1 volt between the appropriate signal circuit terminal listed below and ground:
* Left front speaker output (+) - terminal 4 X2
* Left front speaker output (-) - terminal 3 X2
* Right front speaker output (+) - terminal 2 X2
* Right front low speaker output (-) - terminal 1 X2
* Left rear speaker output (+) - terminal 8 X2
* Left rear speaker output (-) - terminal 7 X2
* Right rear speaker output (+) - terminal 6 X2
* Right rear speaker output (-) - terminal 5 X2
* Left or rear subwoofer speaker output (+) - terminal 7 X1
* Left or rear subwoofer speaker output (-) - terminal 3 X1
* Right subwoofer speaker output (+) - terminal 6 X1
* Right subwoofer speaker output (-) - terminal 2 X1
瀚慖f greater than the specified range, test both circuits of the affected speaker for a short to voltage.
3. Radio OFF, test for infinite resistance between the appropriate signal circuit terminal listed below and ground:
* Left front speaker output (+) - terminal 4 X2
* Left front speaker output (-) - terminal 3 X2
* Right front speaker output (+) - terminal 2 X2
* Right front low speaker output (-) - terminal 1 X2
* Left rear speaker output (+) - terminal 8 X2
* Left rear speaker output (-) - terminal 7 X2
* Right rear speaker output (+) - terminal 6 X2
* Right rear speaker output (-) - terminal 5 X2
* Left or rear subwoofer speaker output (+) - terminal 7 X1
* Left or rear subwoofer speaker output (-) - terminal 3 X1
* Right subwoofer speaker output (+) - terminal 6 X1
* Right subwoofer speaker output (-) - terminal 2 X1
瀚慖f less than the specified value, test both circuits of the affected speaker for a short to ground.
4. If all circuits test normal, reconnect all harness connectors at the amplifier.
5. Ignition ON, radio ON, disconnect the appropriate speaker.
6. Test for 5.0-7.5 volts between the signal circuit terminals and ground.
瀚慖f less then the specified range test the circuit for an open/high resistance. If the circuit tests normal, replace the amplifier.
瀚慖f greater then the specified range test the circuit for a short to voltage. If the circuit tests normal, replace the amplifier.
7. If the circuit tests normal, replace the appropriate speaker.
DTC Set by Audio Amplifier UQA with Y91 or UQS
1. Ignition OFF, disconnect the X1 and X2 connectors at the amplifier.
2. Radio ON, test for less than 1 volt between the appropriate signal circuit terminal listed below and ground:
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the rear seat audio (RSA) module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the rear seat audio (RSA)
module.
6. Ignition OFF, reconnect the X2 harness connector at the rear seat audio (RSA) module.
7. Disconnect the X2 harness connector at the amplifier.
8. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left rear low level audio signal (+) - terminal 15
* Left rear low level audio signal (-) - terminal 14
* Right rear low level audio signal (+) - terminal 16
* Right rear low level audio signal (-) - terminal 8
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the rear seat audio (RSA) module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the rear seat audio (RSA)
module.
9. If all circuits test normal, replace the amplifier.
DTC Set by Audio Amplifier UQA
1. Ignition OFF, disconnect the X1 and X2 connectors at the amplifier.
2. Radio ON, test for less than 1 volt between the appropriate signal circuit terminal listed below and ground:
* Left front speaker output (+) - terminal 4 X2
* Left front speaker output (-) - terminal 3 X2
* Right front speaker output (+) - terminal 2 X2
* Right front low speaker output (-) - terminal 1 X2
* Left rear speaker output (+) - terminal 8 X2
* Left rear speaker output (-) - terminal 7 X2
* Right rear speaker output (+) - terminal 6 X2
* Right rear speaker output (-) - terminal 5 X2
* Left or rear subwoofer speaker output (+) - terminal 7 X1
* Left or rear subwoofer speaker output (-) - terminal 3 X1
* Right subwoofer speaker output (+) - terminal 6 X1
* Right subwoofer speaker output (-) - terminal 2 X1
瀚慖f greater than the specified range, test both circuits of the affected speaker for a short to voltage.
3. Radio OFF, test for infinite resistance between the appropriate signal circuit terminal listed below and ground:
* Left front speaker output (+) - terminal 4 X2
* Left front speaker output (-) - terminal 3 X2
* Right front speaker output (+) - terminal 2 X2
* Right front low speaker output (-) - terminal 1 X2
* Left rear speaker output (+) - terminal 8 X2
* Left rear speaker output (-) - terminal 7 X2
* Right rear speaker output (+) - terminal 6 X2
* Right rear speaker output (-) - terminal 5 X2
* Left or rear subwoofer speaker output (+) - terminal 7 X1
* Left or rear subwoofer speaker output (-) - terminal 3 X1
* Right subwoofer speaker output (+) - terminal 6 X1
* Right subwoofer speaker output (-) - terminal 2 X1
瀚慖f less than the specified value, test both circuits of the affected speaker for a short to ground.
4. If all circuits test normal, reconnect all harness connectors at the amplifier.
5. Ignition ON, radio ON, disconnect the appropriate speaker.
6. Test for 5.0-7.5 volts between the signal circuit terminals and ground.
瀚慖f less then the specified range test the circuit for an open/high resistance. If the circuit tests normal, replace the amplifier.
瀚慖f greater then the specified range test the circuit for a short to voltage. If the circuit tests normal, replace the amplifier.
7. If the circuit tests normal, replace the appropriate speaker.
DTC Set by Audio Amplifier UQA with Y91 or UQS
1. Ignition OFF, disconnect the X1 and X2 connectors at the amplifier.
2. Radio ON, test for less than 1 volt between the appropriate signal circuit terminal listed below and ground:
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 389
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 389
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the rear seat audio (RSA) module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the rear seat audio (RSA)
module.
6. Ignition OFF, reconnect the X2 harness connector at the rear seat audio (RSA) module.
7. Disconnect the X3 harness connector at the amplifier.
8. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left rear low level audio signal (+) - terminal 13
* Left rear low level audio signal (-) - terminal 5
* Right rear low level audio signal (+) - terminal 12
* Right rear low level audio signal (-) - terminal 4
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the rear seat audio (RSA) module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the rear seat audio (RSA)
module.
9. If all circuits test normal, replace the amplifier.
DTC Set By Radio UQA with Y91 and U42 or UQS and U42
1. Ignition OFF, disconnect the X3 and X4 harness connectors at the amplifier.
2. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left front low level audio signal (+) - terminal 11 X3
* Left front low level audio signal (-) - terminal 12 X3
* Right front low level audio signal (+) - terminal 3 X3
* Right front low level audio signal (-) - terminal 4 X3
* Left rear low level audio signal (+) - terminal 11 X4
* Left rear low level audio signal (-) - terminal 12 X4
* Right rear low level audio signal (+) - terminal 3 X4
* Right rear low level audio signal (-) - terminal 4 X4
* Subwoofer low level audio signal (+) - terminal 5 X4
* Subwoofer low level audio signal (-) - terminal 6 X4
* Center Channel low level audio signal (+) - terminal 13 X4
* Center Channel low level audio signal (-) - terminal 14 X4
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
3. If all circuits test normal, replace the amplifier.
DTC Set By Radio UQA with Y91 and U42 or UQS and U42
1. Ignition OFF, disconnect the X3 and X4 harness connector at the amplifier.
2. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left front low level audio signal (+) - terminal 11 X3
* Left front low level audio signal (-) - terminal 12 X3
* Right front low level audio signal (+) - terminal 3 X3
* Right front low level audio signal (-) - terminal 4 X3
* Subwoofer low level audio signal (+) - terminal 5 X4
* Subwoofer low level audio signal (-) - terminal 6 X4
* Center Channel low level audio signal (+) - terminal 13 X4
* Center Channel low level audio signal (-) - terminal 14 X4
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
3. Ignition OFF, reconnect the X3 harness connector at the amplifier.
4. Disconnect the X2 harness connector at the rear seat audio (RSA) module.
5. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left rear low level audio signal (+) - terminal 1
* Left rear low level audio signal (-) - terminal 2
* Right rear low level audio signal (+) - terminal 3
* Right rear low level audio signal (-) - terminal 4
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the rear seat audio (RSA) module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the rear seat audio (RSA)
module.
6. Ignition OFF, reconnect the X2 harness connector at the rear seat audio (RSA) module.
7. Disconnect the X3 harness connector at the amplifier.
8. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left rear low level audio signal (+) - terminal 13
* Left rear low level audio signal (-) - terminal 5
* Right rear low level audio signal (+) - terminal 12
* Right rear low level audio signal (-) - terminal 4
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the rear seat audio (RSA) module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the rear seat audio (RSA)
module.
9. If all circuits test normal, replace the amplifier.
DTC Set By Radio UQA with Y91 and U42 or UQS and U42
1. Ignition OFF, disconnect the X3 and X4 harness connectors at the amplifier.
2. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left front low level audio signal (+) - terminal 11 X3
* Left front low level audio signal (-) - terminal 12 X3
* Right front low level audio signal (+) - terminal 3 X3
* Right front low level audio signal (-) - terminal 4 X3
* Left rear low level audio signal (+) - terminal 11 X4
* Left rear low level audio signal (-) - terminal 12 X4
* Right rear low level audio signal (+) - terminal 3 X4
* Right rear low level audio signal (-) - terminal 4 X4
* Subwoofer low level audio signal (+) - terminal 5 X4
* Subwoofer low level audio signal (-) - terminal 6 X4
* Center Channel low level audio signal (+) - terminal 13 X4
* Center Channel low level audio signal (-) - terminal 14 X4
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
3. If all circuits test normal, replace the amplifier.
DTC Set By Radio UQA with Y91 and U42 or UQS and U42
1. Ignition OFF, disconnect the X3 and X4 harness connector at the amplifier.
2. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left front low level audio signal (+) - terminal 11 X3
* Left front low level audio signal (-) - terminal 12 X3
* Right front low level audio signal (+) - terminal 3 X3
* Right front low level audio signal (-) - terminal 4 X3
* Subwoofer low level audio signal (+) - terminal 5 X4
* Subwoofer low level audio signal (-) - terminal 6 X4
* Center Channel low level audio signal (+) - terminal 13 X4
* Center Channel low level audio signal (-) - terminal 14 X4
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
3. Ignition OFF, reconnect the X3 harness connector at the amplifier.
4. Disconnect the X2 harness connector at the rear seat audio (RSA) module.
5. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left rear low level audio signal (+) - terminal 1
* Left rear low level audio signal (-) - terminal 2
* Right rear low level audio signal (+) - terminal 3
* Right rear low level audio signal (-) - terminal 4
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 383
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 383
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
3. If all circuits test normal, replace the amplifier.
DTC Set By Radio UQA with Y91 and U42 or UQS and U42
1. Ignition OFF, disconnect the X3 and X4 harness connector at the amplifier.
2. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left front low level audio signal (+) - terminal 11 X3
* Left front low level audio signal (-) - terminal 12 X3
* Right front low level audio signal (+) - terminal 3 X3
* Right front low level audio signal (-) - terminal 4 X3
* Subwoofer low level audio signal (+) - terminal 5 X4
* Subwoofer low level audio signal (-) - terminal 6 X4
* Center Channel low level audio signal (+) - terminal 13 X4
* Center Channel low level audio signal (-) - terminal 14 X4
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
3. Ignition OFF, reconnect the X3 harness connector at the amplifier.
4. Disconnect the X2 harness connector at the rear seat audio (RSA) module.
5. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left rear low level audio signal (+) - terminal 1
* Left rear low level audio signal (-) - terminal 2
* Right rear low level audio signal (+) - terminal 3
* Right rear low level audio signal (-) - terminal 4
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the rear seat audio (RSA) module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the rear seat audio (RSA)
module.
6. Ignition OFF, reconnect the X2 harness connector at the rear seat audio (RSA) module.
7. Disconnect the X2 harness connector at the amplifier.
8. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left rear low level audio signal (+) - terminal 15
* Left rear low level audio signal (-) - terminal 14
* Right rear low level audio signal (+) - terminal 16
* Right rear low level audio signal (-) - terminal 8
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the rear seat audio (RSA) module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the rear seat audio (RSA)
module.
9. If all circuits test normal, replace the amplifier.
DTC Set by Audio Amplifier UQA
1. Ignition OFF, disconnect the X1 and X2 connectors at the amplifier.
2. Radio ON, test for less than 1 volt between the appropriate signal circuit terminal listed below and ground:
* Left front speaker output (+) - terminal 4 X2
* Left front speaker output (-) - terminal 3 X2
* Right front speaker output (+) - terminal 2 X2
* Right front low speaker output (-) - terminal 1 X2
* Left rear speaker output (+) - terminal 8 X2
* Left rear speaker output (-) - terminal 7 X2
* Right rear speaker output (+) - terminal 6 X2
* Right rear speaker output (-) - terminal 5 X2
* Left or rear subwoofer speaker output (+) - terminal 7 X1
* Left or rear subwoofer speaker output (-) - terminal 3 X1
* Right subwoofer speaker output (+) - terminal 6 X1
* Right subwoofer speaker output (-) - terminal 2 X1
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
3. If all circuits test normal, replace the amplifier.
DTC Set By Radio UQA with Y91 and U42 or UQS and U42
1. Ignition OFF, disconnect the X3 and X4 harness connector at the amplifier.
2. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left front low level audio signal (+) - terminal 11 X3
* Left front low level audio signal (-) - terminal 12 X3
* Right front low level audio signal (+) - terminal 3 X3
* Right front low level audio signal (-) - terminal 4 X3
* Subwoofer low level audio signal (+) - terminal 5 X4
* Subwoofer low level audio signal (-) - terminal 6 X4
* Center Channel low level audio signal (+) - terminal 13 X4
* Center Channel low level audio signal (-) - terminal 14 X4
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
3. Ignition OFF, reconnect the X3 harness connector at the amplifier.
4. Disconnect the X2 harness connector at the rear seat audio (RSA) module.
5. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left rear low level audio signal (+) - terminal 1
* Left rear low level audio signal (-) - terminal 2
* Right rear low level audio signal (+) - terminal 3
* Right rear low level audio signal (-) - terminal 4
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the rear seat audio (RSA) module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the rear seat audio (RSA)
module.
6. Ignition OFF, reconnect the X2 harness connector at the rear seat audio (RSA) module.
7. Disconnect the X2 harness connector at the amplifier.
8. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left rear low level audio signal (+) - terminal 15
* Left rear low level audio signal (-) - terminal 14
* Right rear low level audio signal (+) - terminal 16
* Right rear low level audio signal (-) - terminal 8
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the rear seat audio (RSA) module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the rear seat audio (RSA)
module.
9. If all circuits test normal, replace the amplifier.
DTC Set by Audio Amplifier UQA
1. Ignition OFF, disconnect the X1 and X2 connectors at the amplifier.
2. Radio ON, test for less than 1 volt between the appropriate signal circuit terminal listed below and ground:
* Left front speaker output (+) - terminal 4 X2
* Left front speaker output (-) - terminal 3 X2
* Right front speaker output (+) - terminal 2 X2
* Right front low speaker output (-) - terminal 1 X2
* Left rear speaker output (+) - terminal 8 X2
* Left rear speaker output (-) - terminal 7 X2
* Right rear speaker output (+) - terminal 6 X2
* Right rear speaker output (-) - terminal 5 X2
* Left or rear subwoofer speaker output (+) - terminal 7 X1
* Left or rear subwoofer speaker output (-) - terminal 3 X1
* Right subwoofer speaker output (+) - terminal 6 X1
* Right subwoofer speaker output (-) - terminal 2 X1
Sunday, November 17, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 848
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 848
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the EBCM.
7. Verify the scan tool BMC Primary Piston Position Sensor B parameter is less than 1 V.
瀚慖f greater than the specified range, test the signal circuit terminal 1 for a short to voltage. If the circuit tests normal, replace the EBCM.
8. Install a 3A fused jumper wire between the signal circuit terminal 1 and the 5 V reference circuit terminal 2. Verify the scan tool BMC
Primary Piston Position Sensor B parameter is greater than 4.5 V.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the EBCM.
9. If all circuits test normal, replace the brake master cylinder piston position sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Brake Master Cylinder Primary Piston Position Sensor Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction Control
Systems/Braking Sensor/Switch/Service and Repair)
* Brake Pressure Modulator Valve Replacement ()
* Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
Brake Pedal Position Sensor 4 Plausibility
DTC C0294, C120C, or C12F8
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC C0294 00
- BMC Primary Piston Position Sensor A and B Correlation
DTC C120C
- Brake Pedal Position Sensor 4 Plausibility
DTC C12F8
- Brake Pedal Position Sensor 3 Plausibility
Diagnostic Fault Information
Circuit/System Description
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the EBCM.
7. Verify the scan tool BMC Primary Piston Position Sensor B parameter is less than 1 V.
瀚慖f greater than the specified range, test the signal circuit terminal 1 for a short to voltage. If the circuit tests normal, replace the EBCM.
8. Install a 3A fused jumper wire between the signal circuit terminal 1 and the 5 V reference circuit terminal 2. Verify the scan tool BMC
Primary Piston Position Sensor B parameter is greater than 4.5 V.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the EBCM.
9. If all circuits test normal, replace the brake master cylinder piston position sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Brake Master Cylinder Primary Piston Position Sensor Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction Control
Systems/Braking Sensor/Switch/Service and Repair)
* Brake Pressure Modulator Valve Replacement ()
* Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming
Brake Pedal Position Sensor 4 Plausibility
DTC C0294, C120C, or C12F8
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC C0294 00
- BMC Primary Piston Position Sensor A and B Correlation
DTC C120C
- Brake Pedal Position Sensor 4 Plausibility
DTC C12F8
- Brake Pedal Position Sensor 3 Plausibility
Diagnostic Fault Information
Circuit/System Description
Wednesday, November 13, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 463
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 463
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the BCM.
6. If all circuits test normal, test or replace the headlamp and panel dimmer switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Headlamp Switch Replacement (Cadillac) (See: Lighting and Horns/Headlamp/Headlamp Switch/Service and Repair/Headlamp Switch
Replacement (Cadillac))Headlamp Switch Replacement (Except Cadillac) (See: Lighting and Horns/Headlamp/Headlamp Switch/Service
and Repair/Headlamp Switch Replacement (Except Cadillac))
* Control Module References (See: Testing and Inspection/Programming and Relearning) for BCM replacement, setup, and programming
Power Seats
DTC B1395
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC B1395 02
- Device Voltage Reference Output Circuit Short to Ground
DTC B1395 05
- Device Voltage Reference Output Circuit Short to Battery or Open
Diagnostic Fault Information
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the BCM.
6. If all circuits test normal, test or replace the headlamp and panel dimmer switch.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Headlamp Switch Replacement (Cadillac) (See: Lighting and Horns/Headlamp/Headlamp Switch/Service and Repair/Headlamp Switch
Replacement (Cadillac))Headlamp Switch Replacement (Except Cadillac) (See: Lighting and Horns/Headlamp/Headlamp Switch/Service
and Repair/Headlamp Switch Replacement (Except Cadillac))
* Control Module References (See: Testing and Inspection/Programming and Relearning) for BCM replacement, setup, and programming
Power Seats
DTC B1395
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC B1395 02
- Device Voltage Reference Output Circuit Short to Ground
DTC B1395 05
- Device Voltage Reference Output Circuit Short to Battery or Open
Diagnostic Fault Information
Tuesday, November 12, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 405
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 405
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the rear seat audio (RSA) module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the rear seat audio (RSA)
module.
6. Ignition OFF, reconnect the X2 harness connector at the rear seat audio (RSA) module.
7. Disconnect the X2 harness connector at the amplifier.
8. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left rear low level audio signal (+) - terminal 15
* Left rear low level audio signal (-) - terminal 14
* Right rear low level audio signal (+) - terminal 16
* Right rear low level audio signal (-) - terminal 8
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the rear seat audio (RSA) module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the rear seat audio (RSA)
module.
9. If all circuits test normal, replace the amplifier.
DTC Set by Audio Amplifier UQA
1. Ignition OFF, disconnect the X1 and X2 connectors at the amplifier.
2. Radio ON, test for less than 1 volt between the appropriate signal circuit terminal listed below and ground:
* Left front speaker output (+) - terminal 4 X2
* Left front speaker output (-) - terminal 3 X2
* Right front speaker output (+) - terminal 2 X2
* Right front low speaker output (-) - terminal 1 X2
* Left rear speaker output (+) - terminal 8 X2
* Left rear speaker output (-) - terminal 7 X2
* Right rear speaker output (+) - terminal 6 X2
* Right rear speaker output (-) - terminal 5 X2
* Left or rear subwoofer speaker output (+) - terminal 7 X1
* Left or rear subwoofer speaker output (-) - terminal 3 X1
* Right subwoofer speaker output (+) - terminal 6 X1
* Right subwoofer speaker output (-) - terminal 2 X1
瀚慖f greater than the specified range, test both circuits of the affected speaker for a short to voltage.
3. Radio OFF, test for infinite resistance between the appropriate signal circuit terminal listed below and ground:
* Left front speaker output (+) - terminal 4 X2
* Left front speaker output (-) - terminal 3 X2
* Right front speaker output (+) - terminal 2 X2
* Right front low speaker output (-) - terminal 1 X2
* Left rear speaker output (+) - terminal 8 X2
* Left rear speaker output (-) - terminal 7 X2
* Right rear speaker output (+) - terminal 6 X2
* Right rear speaker output (-) - terminal 5 X2
* Left or rear subwoofer speaker output (+) - terminal 7 X1
* Left or rear subwoofer speaker output (-) - terminal 3 X1
* Right subwoofer speaker output (+) - terminal 6 X1
* Right subwoofer speaker output (-) - terminal 2 X1
瀚慖f less than the specified value, test both circuits of the affected speaker for a short to ground.
4. If all circuits test normal, reconnect all harness connectors at the amplifier.
5. Ignition ON, radio ON, disconnect the appropriate speaker.
6. Test for 5.0-7.5 volts between the signal circuit terminals and ground.
瀚慖f less then the specified range test the circuit for an open/high resistance. If the circuit tests normal, replace the amplifier.
瀚慖f greater then the specified range test the circuit for a short to voltage. If the circuit tests normal, replace the amplifier.
7. If the circuit tests normal, replace the appropriate speaker.
DTC Set by Audio Amplifier UQA with Y91 or UQS
1. Ignition OFF, disconnect the X1 and X2 connectors at the amplifier.
2. Radio ON, test for less than 1 volt between the appropriate signal circuit terminal listed below and ground:
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the rear seat audio (RSA) module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the rear seat audio (RSA)
module.
6. Ignition OFF, reconnect the X2 harness connector at the rear seat audio (RSA) module.
7. Disconnect the X2 harness connector at the amplifier.
8. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left rear low level audio signal (+) - terminal 15
* Left rear low level audio signal (-) - terminal 14
* Right rear low level audio signal (+) - terminal 16
* Right rear low level audio signal (-) - terminal 8
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the rear seat audio (RSA) module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the rear seat audio (RSA)
module.
9. If all circuits test normal, replace the amplifier.
DTC Set by Audio Amplifier UQA
1. Ignition OFF, disconnect the X1 and X2 connectors at the amplifier.
2. Radio ON, test for less than 1 volt between the appropriate signal circuit terminal listed below and ground:
* Left front speaker output (+) - terminal 4 X2
* Left front speaker output (-) - terminal 3 X2
* Right front speaker output (+) - terminal 2 X2
* Right front low speaker output (-) - terminal 1 X2
* Left rear speaker output (+) - terminal 8 X2
* Left rear speaker output (-) - terminal 7 X2
* Right rear speaker output (+) - terminal 6 X2
* Right rear speaker output (-) - terminal 5 X2
* Left or rear subwoofer speaker output (+) - terminal 7 X1
* Left or rear subwoofer speaker output (-) - terminal 3 X1
* Right subwoofer speaker output (+) - terminal 6 X1
* Right subwoofer speaker output (-) - terminal 2 X1
瀚慖f greater than the specified range, test both circuits of the affected speaker for a short to voltage.
3. Radio OFF, test for infinite resistance between the appropriate signal circuit terminal listed below and ground:
* Left front speaker output (+) - terminal 4 X2
* Left front speaker output (-) - terminal 3 X2
* Right front speaker output (+) - terminal 2 X2
* Right front low speaker output (-) - terminal 1 X2
* Left rear speaker output (+) - terminal 8 X2
* Left rear speaker output (-) - terminal 7 X2
* Right rear speaker output (+) - terminal 6 X2
* Right rear speaker output (-) - terminal 5 X2
* Left or rear subwoofer speaker output (+) - terminal 7 X1
* Left or rear subwoofer speaker output (-) - terminal 3 X1
* Right subwoofer speaker output (+) - terminal 6 X1
* Right subwoofer speaker output (-) - terminal 2 X1
瀚慖f less than the specified value, test both circuits of the affected speaker for a short to ground.
4. If all circuits test normal, reconnect all harness connectors at the amplifier.
5. Ignition ON, radio ON, disconnect the appropriate speaker.
6. Test for 5.0-7.5 volts between the signal circuit terminals and ground.
瀚慖f less then the specified range test the circuit for an open/high resistance. If the circuit tests normal, replace the amplifier.
瀚慖f greater then the specified range test the circuit for a short to voltage. If the circuit tests normal, replace the amplifier.
7. If the circuit tests normal, replace the appropriate speaker.
DTC Set by Audio Amplifier UQA with Y91 or UQS
1. Ignition OFF, disconnect the X1 and X2 connectors at the amplifier.
2. Radio ON, test for less than 1 volt between the appropriate signal circuit terminal listed below and ground:
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 404
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 404
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the rear seat audio (RSA) module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the rear seat audio (RSA)
module.
6. Ignition OFF, reconnect the X2 harness connector at the rear seat audio (RSA) module.
7. Disconnect the X3 harness connector at the amplifier.
8. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left rear low level audio signal (+) - terminal 13
* Left rear low level audio signal (-) - terminal 5
* Right rear low level audio signal (+) - terminal 12
* Right rear low level audio signal (-) - terminal 4
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the rear seat audio (RSA) module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the rear seat audio (RSA)
module.
9. If all circuits test normal, replace the amplifier.
DTC Set By Radio UQA with Y91 and U42 or UQS and U42
1. Ignition OFF, disconnect the X3 and X4 harness connectors at the amplifier.
2. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left front low level audio signal (+) - terminal 11 X3
* Left front low level audio signal (-) - terminal 12 X3
* Right front low level audio signal (+) - terminal 3 X3
* Right front low level audio signal (-) - terminal 4 X3
* Left rear low level audio signal (+) - terminal 11 X4
* Left rear low level audio signal (-) - terminal 12 X4
* Right rear low level audio signal (+) - terminal 3 X4
* Right rear low level audio signal (-) - terminal 4 X4
* Subwoofer low level audio signal (+) - terminal 5 X4
* Subwoofer low level audio signal (-) - terminal 6 X4
* Center Channel low level audio signal (+) - terminal 13 X4
* Center Channel low level audio signal (-) - terminal 14 X4
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
3. If all circuits test normal, replace the amplifier.
DTC Set By Radio UQA with Y91 and U42 or UQS and U42
1. Ignition OFF, disconnect the X3 and X4 harness connector at the amplifier.
2. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left front low level audio signal (+) - terminal 11 X3
* Left front low level audio signal (-) - terminal 12 X3
* Right front low level audio signal (+) - terminal 3 X3
* Right front low level audio signal (-) - terminal 4 X3
* Subwoofer low level audio signal (+) - terminal 5 X4
* Subwoofer low level audio signal (-) - terminal 6 X4
* Center Channel low level audio signal (+) - terminal 13 X4
* Center Channel low level audio signal (-) - terminal 14 X4
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
3. Ignition OFF, reconnect the X3 harness connector at the amplifier.
4. Disconnect the X2 harness connector at the rear seat audio (RSA) module.
5. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left rear low level audio signal (+) - terminal 1
* Left rear low level audio signal (-) - terminal 2
* Right rear low level audio signal (+) - terminal 3
* Right rear low level audio signal (-) - terminal 4
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the rear seat audio (RSA) module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the rear seat audio (RSA)
module.
6. Ignition OFF, reconnect the X2 harness connector at the rear seat audio (RSA) module.
7. Disconnect the X3 harness connector at the amplifier.
8. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left rear low level audio signal (+) - terminal 13
* Left rear low level audio signal (-) - terminal 5
* Right rear low level audio signal (+) - terminal 12
* Right rear low level audio signal (-) - terminal 4
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the rear seat audio (RSA) module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the rear seat audio (RSA)
module.
9. If all circuits test normal, replace the amplifier.
DTC Set By Radio UQA with Y91 and U42 or UQS and U42
1. Ignition OFF, disconnect the X3 and X4 harness connectors at the amplifier.
2. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left front low level audio signal (+) - terminal 11 X3
* Left front low level audio signal (-) - terminal 12 X3
* Right front low level audio signal (+) - terminal 3 X3
* Right front low level audio signal (-) - terminal 4 X3
* Left rear low level audio signal (+) - terminal 11 X4
* Left rear low level audio signal (-) - terminal 12 X4
* Right rear low level audio signal (+) - terminal 3 X4
* Right rear low level audio signal (-) - terminal 4 X4
* Subwoofer low level audio signal (+) - terminal 5 X4
* Subwoofer low level audio signal (-) - terminal 6 X4
* Center Channel low level audio signal (+) - terminal 13 X4
* Center Channel low level audio signal (-) - terminal 14 X4
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
3. If all circuits test normal, replace the amplifier.
DTC Set By Radio UQA with Y91 and U42 or UQS and U42
1. Ignition OFF, disconnect the X3 and X4 harness connector at the amplifier.
2. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left front low level audio signal (+) - terminal 11 X3
* Left front low level audio signal (-) - terminal 12 X3
* Right front low level audio signal (+) - terminal 3 X3
* Right front low level audio signal (-) - terminal 4 X3
* Subwoofer low level audio signal (+) - terminal 5 X4
* Subwoofer low level audio signal (-) - terminal 6 X4
* Center Channel low level audio signal (+) - terminal 13 X4
* Center Channel low level audio signal (-) - terminal 14 X4
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
3. Ignition OFF, reconnect the X3 harness connector at the amplifier.
4. Disconnect the X2 harness connector at the rear seat audio (RSA) module.
5. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left rear low level audio signal (+) - terminal 1
* Left rear low level audio signal (-) - terminal 2
* Right rear low level audio signal (+) - terminal 3
* Right rear low level audio signal (-) - terminal 4
Monday, November 4, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1089
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1089
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the trailer brake control module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the trailer brake control
module.
10. If all circuits test normal, test or replace the trailer brake controller switch panel.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Trailer Brake Control Switch Replacement (See: Accessories and Optional Equipment/Towing / Trailer System/Trailer Brake Control
Module/Service and Repair/Trailer Brake Control Switch Replacement)
* Trailer Brake Control Module Replacement (See: Accessories and Optional Equipment/Towing / Trailer System/Trailer Brake Control
Module/Service and Repair/Trailer Brake Control Module Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for TBCM replacement, setup, and programming
Gasoline Without LY6
DTC C0870, C1112, C1113, C1114, or C1119 (Gasoline Without LY6)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC C0870 00
- Device Voltage Reference Output 1 Circuit
DTC C1112 00
- Trailer Brake Control Relay Low Control Circuit
DTC C1113 01
- Trailer Brake Control Relay High Control Circuit Short to Battery
DTC C1114 00
- Trailer Brake Control Solenoids Control Circuit
DTC C1119 00
- Trailer Brake Control Relay Feedback Circuit
Diagnostic Fault Information
Circuit/System Description
The trailer brake control relay receives inputs from the fuel pump/trailer brake control module, these inputs are used to determine the amount of
voltage the relay will supply to the trailer brakes.
Conditions for Running the DTC
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the trailer brake control module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the trailer brake control
module.
10. If all circuits test normal, test or replace the trailer brake controller switch panel.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Trailer Brake Control Switch Replacement (See: Accessories and Optional Equipment/Towing / Trailer System/Trailer Brake Control
Module/Service and Repair/Trailer Brake Control Switch Replacement)
* Trailer Brake Control Module Replacement (See: Accessories and Optional Equipment/Towing / Trailer System/Trailer Brake Control
Module/Service and Repair/Trailer Brake Control Module Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for TBCM replacement, setup, and programming
Gasoline Without LY6
DTC C0870, C1112, C1113, C1114, or C1119 (Gasoline Without LY6)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC C0870 00
- Device Voltage Reference Output 1 Circuit
DTC C1112 00
- Trailer Brake Control Relay Low Control Circuit
DTC C1113 01
- Trailer Brake Control Relay High Control Circuit Short to Battery
DTC C1114 00
- Trailer Brake Control Solenoids Control Circuit
DTC C1119 00
- Trailer Brake Control Relay Feedback Circuit
Diagnostic Fault Information
Circuit/System Description
The trailer brake control relay receives inputs from the fuel pump/trailer brake control module, these inputs are used to determine the amount of
voltage the relay will supply to the trailer brakes.
Conditions for Running the DTC
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1083
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1083
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the trailer brake control module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the trailer brake control
module.
10. If all circuits test normal, test or replace the trailer brake controller switch panel.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Trailer Brake Control Switch Replacement (See: Accessories and Optional Equipment/Towing / Trailer System/Trailer Brake Control
Module/Service and Repair/Trailer Brake Control Switch Replacement)
* Trailer Brake Control Module Replacement (See: Accessories and Optional Equipment/Towing / Trailer System/Trailer Brake Control
Module/Service and Repair/Trailer Brake Control Module Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for TBCM replacement, setup, and programming
Gasoline Without LY6
DTC C0880, C0890, C1115, C1116, C1117, or C1118 (Gasoline Without LY6)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC C0880 00
- Device Voltage Reference Output 2 Circuit
DTC C0890 00
- Device Voltage Reference Output 3 Circuit
DTC C1115 08
- Manual Trailer Brake Apply Request Switch Signal Invalid
DTC C1115 5A
- Manual Trailer Brake Apply Request Switch Signal Plausibility Failure
DTC C1116 00
- Manual Trailer Brake Apply Request Signal 1
DTC C1117 00
- Manual Trailer Brake Apply Request Signal 2
DTC C1118 00
- Trailer Brake Control Sensitivity Switch Circuit
DTC C1118 08
- Trailer Brake Control Sensitivity Switch Circuit Signal Invalid
Diagnostic Fault Information
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the trailer brake control module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the trailer brake control
module.
10. If all circuits test normal, test or replace the trailer brake controller switch panel.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Trailer Brake Control Switch Replacement (See: Accessories and Optional Equipment/Towing / Trailer System/Trailer Brake Control
Module/Service and Repair/Trailer Brake Control Switch Replacement)
* Trailer Brake Control Module Replacement (See: Accessories and Optional Equipment/Towing / Trailer System/Trailer Brake Control
Module/Service and Repair/Trailer Brake Control Module Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for TBCM replacement, setup, and programming
Gasoline Without LY6
DTC C0880, C0890, C1115, C1116, C1117, or C1118 (Gasoline Without LY6)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC C0880 00
- Device Voltage Reference Output 2 Circuit
DTC C0890 00
- Device Voltage Reference Output 3 Circuit
DTC C1115 08
- Manual Trailer Brake Apply Request Switch Signal Invalid
DTC C1115 5A
- Manual Trailer Brake Apply Request Switch Signal Plausibility Failure
DTC C1116 00
- Manual Trailer Brake Apply Request Signal 1
DTC C1117 00
- Manual Trailer Brake Apply Request Signal 2
DTC C1118 00
- Trailer Brake Control Sensitivity Switch Circuit
DTC C1118 08
- Trailer Brake Control Sensitivity Switch Circuit Signal Invalid
Diagnostic Fault Information
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1077
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1077
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the trailer brake control module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the trailer brake control
module.
10. If all circuits test normal, test or replace the trailer brake controller switch panel.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Trailer Brake Control Switch Replacement (See: Accessories and Optional Equipment/Towing / Trailer System/Trailer Brake Control
Module/Service and Repair/Trailer Brake Control Switch Replacement)
* Trailer Brake Control Module Replacement (See: Accessories and Optional Equipment/Towing / Trailer System/Trailer Brake Control
Module/Service and Repair/Trailer Brake Control Module Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for TBCM replacement, setup, and programming
Gasoline Without LY6
DTC C0880, C0890, C1115, C1116, C1117, or C1118 (Gasoline Without LY6)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC C0880 00
- Device Voltage Reference Output 2 Circuit
DTC C0890 00
- Device Voltage Reference Output 3 Circuit
DTC C1115 08
- Manual Trailer Brake Apply Request Switch Signal Invalid
DTC C1115 5A
- Manual Trailer Brake Apply Request Switch Signal Plausibility Failure
DTC C1116 00
- Manual Trailer Brake Apply Request Signal 1
DTC C1117 00
- Manual Trailer Brake Apply Request Signal 2
DTC C1118 00
- Trailer Brake Control Sensitivity Switch Circuit
DTC C1118 08
- Trailer Brake Control Sensitivity Switch Circuit Signal Invalid
Diagnostic Fault Information
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the trailer brake control module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the trailer brake control
module.
10. If all circuits test normal, test or replace the trailer brake controller switch panel.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Trailer Brake Control Switch Replacement (See: Accessories and Optional Equipment/Towing / Trailer System/Trailer Brake Control
Module/Service and Repair/Trailer Brake Control Switch Replacement)
* Trailer Brake Control Module Replacement (See: Accessories and Optional Equipment/Towing / Trailer System/Trailer Brake Control
Module/Service and Repair/Trailer Brake Control Module Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for TBCM replacement, setup, and programming
Gasoline Without LY6
DTC C0880, C0890, C1115, C1116, C1117, or C1118 (Gasoline Without LY6)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC C0880 00
- Device Voltage Reference Output 2 Circuit
DTC C0890 00
- Device Voltage Reference Output 3 Circuit
DTC C1115 08
- Manual Trailer Brake Apply Request Switch Signal Invalid
DTC C1115 5A
- Manual Trailer Brake Apply Request Switch Signal Plausibility Failure
DTC C1116 00
- Manual Trailer Brake Apply Request Signal 1
DTC C1117 00
- Manual Trailer Brake Apply Request Signal 2
DTC C1118 00
- Trailer Brake Control Sensitivity Switch Circuit
DTC C1118 08
- Trailer Brake Control Sensitivity Switch Circuit Signal Invalid
Diagnostic Fault Information
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1071
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1071
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the trailer brake control module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the trailer brake control
module.
10. If all circuits test normal, test or replace the trailer brake controller switch panel.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Trailer Brake Control Switch Replacement (See: Accessories and Optional Equipment/Towing / Trailer System/Trailer Brake Control
Module/Service and Repair/Trailer Brake Control Switch Replacement)
* Trailer Brake Control Module Replacement (See: Accessories and Optional Equipment/Towing / Trailer System/Trailer Brake Control
Module/Service and Repair/Trailer Brake Control Module Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for TBCM replacement, setup, and programming
Gasoline Without LY6
DTC C0880, C0890, C1115, C1116, C1117, or C1118 (Gasoline Without LY6)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC C0880 00
- Device Voltage Reference Output 2 Circuit
DTC C0890 00
- Device Voltage Reference Output 3 Circuit
DTC C1115 08
- Manual Trailer Brake Apply Request Switch Signal Invalid
DTC C1115 5A
- Manual Trailer Brake Apply Request Switch Signal Plausibility Failure
DTC C1116 00
- Manual Trailer Brake Apply Request Signal 1
DTC C1117 00
- Manual Trailer Brake Apply Request Signal 2
DTC C1118 00
- Trailer Brake Control Sensitivity Switch Circuit
DTC C1118 08
- Trailer Brake Control Sensitivity Switch Circuit Signal Invalid
Diagnostic Fault Information
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the trailer brake control module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the trailer brake control
module.
10. If all circuits test normal, test or replace the trailer brake controller switch panel.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Trailer Brake Control Switch Replacement (See: Accessories and Optional Equipment/Towing / Trailer System/Trailer Brake Control
Module/Service and Repair/Trailer Brake Control Switch Replacement)
* Trailer Brake Control Module Replacement (See: Accessories and Optional Equipment/Towing / Trailer System/Trailer Brake Control
Module/Service and Repair/Trailer Brake Control Module Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for TBCM replacement, setup, and programming
Gasoline Without LY6
DTC C0880, C0890, C1115, C1116, C1117, or C1118 (Gasoline Without LY6)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC C0880 00
- Device Voltage Reference Output 2 Circuit
DTC C0890 00
- Device Voltage Reference Output 3 Circuit
DTC C1115 08
- Manual Trailer Brake Apply Request Switch Signal Invalid
DTC C1115 5A
- Manual Trailer Brake Apply Request Switch Signal Plausibility Failure
DTC C1116 00
- Manual Trailer Brake Apply Request Signal 1
DTC C1117 00
- Manual Trailer Brake Apply Request Signal 2
DTC C1118 00
- Trailer Brake Control Sensitivity Switch Circuit
DTC C1118 08
- Trailer Brake Control Sensitivity Switch Circuit Signal Invalid
Diagnostic Fault Information
Sunday, November 3, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1025
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1025
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the trailer brake control module.
7. Verify the scan tool Redundant Manual Apply Switch parameter is greater than 90 percent.
瀚慖f less than the specified range, test the signal circuit terminal 5 for a short to voltage. If the circuit tests normal, replace the trailer brake
control module.
8. Install a 3 A fused jumper wire between the signal circuit terminal 5 and the 5 V reference circuit terminal 3. Verify the scan tool Redundant
Manual Apply Switch parameter is less than 2 percent.
瀚慖f greater than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the trailer brake control module.
9. Ignition ON, test for 4.8-5.2 V between the signal circuit terminal 6 and ground.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the trailer brake control module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the trailer brake control
module.
10. If all circuits test normal, test or replace the trailer brake controller switch panel.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Trailer Brake Control Switch Replacement (See: Accessories and Optional Equipment/Towing / Trailer System/Trailer Brake Control
Module/Service and Repair/Trailer Brake Control Switch Replacement)
* Trailer Brake Control Module Replacement (See: Accessories and Optional Equipment/Towing / Trailer System/Trailer Brake Control
Module/Service and Repair/Trailer Brake Control Module Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for TBCM replacement, setup, and programming
Lighting
DTC C0277, C0297, or C0890
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC C0277 06
- Brake Pedal Position Sensor Circuit Short to Ground or Open
DTC C0277 07
- Brake Pedal Position Sensor Circuit Voltage Above Threshold
DTC C0277 09
- Brake Pedal Position Sensor Circuit Rate of Change Above Threshold
DTC C0277 4B
- Brake Pedal Position Sensor Calibration Not Learned
DTC C0297 00
- Brake Applied Output Circuit
DTC C0890 03
- Device Voltage Reference Output 3 Circuit Voltage Below Threshold
DTC C0890 07
- Device Voltage Reference Output 3 Circuit Voltage Above Threshold
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the trailer brake control module.
7. Verify the scan tool Redundant Manual Apply Switch parameter is greater than 90 percent.
瀚慖f less than the specified range, test the signal circuit terminal 5 for a short to voltage. If the circuit tests normal, replace the trailer brake
control module.
8. Install a 3 A fused jumper wire between the signal circuit terminal 5 and the 5 V reference circuit terminal 3. Verify the scan tool Redundant
Manual Apply Switch parameter is less than 2 percent.
瀚慖f greater than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the trailer brake control module.
9. Ignition ON, test for 4.8-5.2 V between the signal circuit terminal 6 and ground.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the trailer brake control module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the trailer brake control
module.
10. If all circuits test normal, test or replace the trailer brake controller switch panel.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Trailer Brake Control Switch Replacement (See: Accessories and Optional Equipment/Towing / Trailer System/Trailer Brake Control
Module/Service and Repair/Trailer Brake Control Switch Replacement)
* Trailer Brake Control Module Replacement (See: Accessories and Optional Equipment/Towing / Trailer System/Trailer Brake Control
Module/Service and Repair/Trailer Brake Control Module Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for TBCM replacement, setup, and programming
Lighting
DTC C0277, C0297, or C0890
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC C0277 06
- Brake Pedal Position Sensor Circuit Short to Ground or Open
DTC C0277 07
- Brake Pedal Position Sensor Circuit Voltage Above Threshold
DTC C0277 09
- Brake Pedal Position Sensor Circuit Rate of Change Above Threshold
DTC C0277 4B
- Brake Pedal Position Sensor Calibration Not Learned
DTC C0297 00
- Brake Applied Output Circuit
DTC C0890 03
- Device Voltage Reference Output 3 Circuit Voltage Below Threshold
DTC C0890 07
- Device Voltage Reference Output 3 Circuit Voltage Above Threshold
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