2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 584
6. 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
B2455
DTC B2455
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) provide an overview of each diagnostic category.
DTC Descriptor
DTC B2455 04
- Cellular Phone Microphone Circuit Malfunction Open Circuit
Diagnostic Fault Information
Circuit/System Description
The communication interface module (CIM) provides the cellular phone microphone with a supplied voltage on the cellular phone microphone
signal circuit. When the microphone is in use, voice data from the user is sent back to the CIM on the signal circuit. The CIM provides a ground for
the microphone via the low reference circuit.
Conditions for Running the DTC
* The ignition must be in the RUN or ACC position.
* The system voltage is at least 9.5 V and no more than 15.5 V.
Conditions for Setting the DTC
* The CIM detects an open, short to ground or short to voltage in the cellular phone microphone signal circuit for 10 seconds or greater.
* The CIM detects an open/high resistance in the drain wire circuit for 10 seconds or greater.
Actions Taken When the DTC Sets
* The OnStar(R) status LED turns red.
* The CIM will not receive a signal from the microphone.
* Calls can be placed but the caller cannot be heard.
Conditions for Clearing the DTC
* The condition responsible for setting the DTC no longer exists.
* A history DTC will clear once 50 consecutive malfunction-free ignition cycles have occurred.
Schematic Reference
OnStar Schematics (See: Accessories and Optional Equipment/Diagrams/Electrical Diagrams/OnStar Schematics)
Connector End View Reference
Showing posts with label replace the HSM.. Show all posts
Showing posts with label replace the HSM.. Show all posts
Saturday, November 30, 2019
Friday, November 29, 2019
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 542
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 542
6. If all circuits test normal, replace the HSM.
B2345 13
1. Ignition OFF, disconnect the X2, X4 harness connectors at the HSM.
2. Test for greater than 850 Ohms between the signal and the low reference circuits listed below:
* Driver seat cushion terminal 9 X4 and terminal 6 X2
* Passenger seat cushion terminal 20 X4 and terminal 8 X2
瀚慖f less than the specified value, test for a short between the signal and low reference circuits. If the circuits test normal, replace the
appropriate seat cushion heater element/temperature sensor.
3. Test for greater than 850 Ohms between the signal and the low reference circuits listed below:
* Driver seat back terminal 19 X4 and terminal 5 X2
* Passenger seat back terminal 10 X4 and terminal 7 X2
瀚慖f less than the specified value, test for a short between the signal and low reference circuits. If the circuits test normal, replace the
appropriate seat back heater element/temperature sensor.
4. If all circuits test normal, replace the HSM.
B2345 42 or B2345 4B
If either DTC is set, 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) ()
* 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
Rear Seat
DTC B2345 (Rear Seat)
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 B2345 00
- Seat Heater Disable Circuit
DTC B2345 13
- Seat Heater Disable Circuit Voltage Low / High Temperature
DTC B2345 42
- Seat Heater Disable Circuit Calibration Data Set Not Programmed
DTC B2345 4B
- Seat Heater Disable Circuit Calibration Not Learned
Diagnostic Fault Information
6. If all circuits test normal, replace the HSM.
B2345 13
1. Ignition OFF, disconnect the X2, X4 harness connectors at the HSM.
2. Test for greater than 850 Ohms between the signal and the low reference circuits listed below:
* Driver seat cushion terminal 9 X4 and terminal 6 X2
* Passenger seat cushion terminal 20 X4 and terminal 8 X2
瀚慖f less than the specified value, test for a short between the signal and low reference circuits. If the circuits test normal, replace the
appropriate seat cushion heater element/temperature sensor.
3. Test for greater than 850 Ohms between the signal and the low reference circuits listed below:
* Driver seat back terminal 19 X4 and terminal 5 X2
* Passenger seat back terminal 10 X4 and terminal 7 X2
瀚慖f less than the specified value, test for a short between the signal and low reference circuits. If the circuits test normal, replace the
appropriate seat back heater element/temperature sensor.
4. If all circuits test normal, replace the HSM.
B2345 42 or B2345 4B
If either DTC is set, 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) ()
* 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
Rear Seat
DTC B2345 (Rear Seat)
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 B2345 00
- Seat Heater Disable Circuit
DTC B2345 13
- Seat Heater Disable Circuit Voltage Low / High Temperature
DTC B2345 42
- Seat Heater Disable Circuit Calibration Data Set Not Programmed
DTC B2345 4B
- Seat Heater Disable Circuit Calibration Not Learned
Diagnostic Fault Information
Thursday, November 28, 2019
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 533
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 533
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.
6. 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
B2180
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
DTC B1935 0C
- Left Seat Back Heater Circuit Current Below Threshold
DTC B1935 0D
- Left Seat Back Heater Circuit Resistance Above Threshold
DTC B1935 0E
- Left Seat Back Heater Circuit Resistance Below Threshold
DTC B1935 1F
- Left Seat Back Heater Circuit Intermittent
DTC B2180 04
- Right Seat Back Heater Circuit Open
DTC B2180 0A
- Right Seat Back Heater Circuit Rate of Change Below Threshold
DTC B2180 0B
- Right Seat Back Heater Circuit Current Above Threshold
DTC B2180 0C
- Right Seat Back Heater Circuit Current Below Threshold
DTC B2180 0D
- Right Seat Back Heater Circuit Resistance Above Threshold
DTC B2180 0E
- Right Seat Back Heater Circuit Resistance Below Threshold
DTC B2180 1F
- Right Seat Back Heater Circuit Intermittent
Diagnostic Fault Information
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.
6. 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
B2180
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
DTC B1935 0C
- Left Seat Back Heater Circuit Current Below Threshold
DTC B1935 0D
- Left Seat Back Heater Circuit Resistance Above Threshold
DTC B1935 0E
- Left Seat Back Heater Circuit Resistance Below Threshold
DTC B1935 1F
- Left Seat Back Heater Circuit Intermittent
DTC B2180 04
- Right Seat Back Heater Circuit Open
DTC B2180 0A
- Right Seat Back Heater Circuit Rate of Change Below Threshold
DTC B2180 0B
- Right Seat Back Heater Circuit Current Above Threshold
DTC B2180 0C
- Right Seat Back Heater Circuit Current Below Threshold
DTC B2180 0D
- Right Seat Back Heater Circuit Resistance Above Threshold
DTC B2180 0E
- Right Seat Back Heater Circuit Resistance Below Threshold
DTC B2180 1F
- Right Seat Back Heater Circuit Intermittent
Diagnostic Fault Information
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 523
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 523
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.
6. 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
HP2 W/O Memory
DTC B1935 or B2180 (HP2 w/o Memory)
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
DTC B1935 0C
- Left Seat Back Heater Circuit Current Below Threshold
DTC B1935 0D
- Left Seat Back Heater Circuit Resistance Above Threshold
DTC B1935 0E
- Left Seat Back Heater Circuit Resistance Below Threshold
DTC B1935 1F
- Left Seat Back Heater Circuit Intermittent
DTC B2180 04
- Right Seat Back Heater Circuit Open
DTC B2180 0A
- Right Seat Back Heater Circuit Rate of Change Below Threshold
DTC B2180 0B
- Right Seat Back Heater Circuit Current Above Threshold
DTC B2180 0C
- Right Seat Back Heater Circuit Current Below Threshold
DTC B2180 0D
- Right Seat Back Heater Circuit Resistance Above Threshold
DTC B2180 0E
- Right Seat Back Heater Circuit Resistance Below Threshold
DTC B2180 1F
- Right Seat Back Heater Circuit Intermittent
Diagnostic Fault Information
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.
6. 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
HP2 W/O Memory
DTC B1935 or B2180 (HP2 w/o Memory)
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
DTC B1935 0C
- Left Seat Back Heater Circuit Current Below Threshold
DTC B1935 0D
- Left Seat Back Heater Circuit Resistance Above Threshold
DTC B1935 0E
- Left Seat Back Heater Circuit Resistance Below Threshold
DTC B1935 1F
- Left Seat Back Heater Circuit Intermittent
DTC B2180 04
- Right Seat Back Heater Circuit Open
DTC B2180 0A
- Right Seat Back Heater Circuit Rate of Change Below Threshold
DTC B2180 0B
- Right Seat Back Heater Circuit Current Above Threshold
DTC B2180 0C
- Right Seat Back Heater Circuit Current Below Threshold
DTC B2180 0D
- Right Seat Back Heater Circuit Resistance Above Threshold
DTC B2180 0E
- Right Seat Back Heater Circuit Resistance Below Threshold
DTC B2180 1F
- Right Seat Back Heater Circuit Intermittent
Diagnostic Fault Information
Thursday, November 14, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 620
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 620
6. 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
B2455
DTC B2455
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) provide an overview of each diagnostic category.
DTC Descriptor
DTC B2455 04
- Cellular Phone Microphone Circuit Malfunction Open Circuit
Diagnostic Fault Information
Circuit/System Description
The communication interface module (CIM) provides the cellular phone microphone with a supplied voltage on the cellular phone microphone
signal circuit. When the microphone is in use, voice data from the user is sent back to the CIM on the signal circuit. The CIM provides a ground for
the microphone via the low reference circuit.
Conditions for Running the DTC
* The ignition must be in the RUN or ACC position.
* The system voltage is at least 9.5 V and no more than 15.5 V.
Conditions for Setting the DTC
* The CIM detects an open, short to ground or short to voltage in the cellular phone microphone signal circuit for 10 seconds or greater.
* The CIM detects an open/high resistance in the drain wire circuit for 10 seconds or greater.
Actions Taken When the DTC Sets
* The OnStar(R) status LED turns red.
* The CIM will not receive a signal from the microphone.
* Calls can be placed but the caller cannot be heard.
Conditions for Clearing the DTC
* The condition responsible for setting the DTC no longer exists.
* A history DTC will clear once 50 consecutive malfunction-free ignition cycles have occurred.
Schematic Reference
OnStar Schematics (See: Accessories and Optional Equipment/Diagrams/Electrical Diagrams/OnStar Schematics)
Connector End View Reference
6. 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
B2455
DTC B2455
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) provide an overview of each diagnostic category.
DTC Descriptor
DTC B2455 04
- Cellular Phone Microphone Circuit Malfunction Open Circuit
Diagnostic Fault Information
Circuit/System Description
The communication interface module (CIM) provides the cellular phone microphone with a supplied voltage on the cellular phone microphone
signal circuit. When the microphone is in use, voice data from the user is sent back to the CIM on the signal circuit. The CIM provides a ground for
the microphone via the low reference circuit.
Conditions for Running the DTC
* The ignition must be in the RUN or ACC position.
* The system voltage is at least 9.5 V and no more than 15.5 V.
Conditions for Setting the DTC
* The CIM detects an open, short to ground or short to voltage in the cellular phone microphone signal circuit for 10 seconds or greater.
* The CIM detects an open/high resistance in the drain wire circuit for 10 seconds or greater.
Actions Taken When the DTC Sets
* The OnStar(R) status LED turns red.
* The CIM will not receive a signal from the microphone.
* Calls can be placed but the caller cannot be heard.
Conditions for Clearing the DTC
* The condition responsible for setting the DTC no longer exists.
* A history DTC will clear once 50 consecutive malfunction-free ignition cycles have occurred.
Schematic Reference
OnStar Schematics (See: Accessories and Optional Equipment/Diagrams/Electrical Diagrams/OnStar Schematics)
Connector End View Reference
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 614
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 614
6. 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
W/O HP2 With Memory
DTC B2435 or B2440 (w/o HP2 with Memory)
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 B2435 02
- Left Seat Back Heater Sensor Circuit Short to Ground
DTC B2435 05
- Left Seat Back Heater Sensor Circuit Short to Battery or Open
DTC B2440 02
- Right Seat Back Heater Sensor Circuit Short to Ground
DTC B2440 05
- Right Seat Back Heater Sensor Circuit Short to Battery or Open
Diagnostic Fault Information
6. 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
W/O HP2 With Memory
DTC B2435 or B2440 (w/o HP2 with Memory)
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 B2435 02
- Left Seat Back Heater Sensor Circuit Short to Ground
DTC B2435 05
- Left Seat Back Heater Sensor Circuit Short to Battery or Open
DTC B2440 02
- Right Seat Back Heater Sensor Circuit Short to Ground
DTC B2440 05
- Right Seat Back Heater Sensor Circuit Short to Battery or Open
Diagnostic Fault Information
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 553
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 553
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.
6. 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
Rear Heated Seat Module
DTC B1925 or B2170 (w/o HP2 with Memory)
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 B1925 02
- Left Seat Cushion Heater Sensor Circuit Shorted to Ground
DTC B1925 05
- Left Seat Cushion Heater Sensor Circuit Shorted to Battery or Open
DTC B2170 02
- Right Seat Heater Cushion Sensor Circuit Shorted to Ground
DTC B2170 05
- Right Seat Heater Cushion Sensor Circuit Shorted to Battery or Open
Diagnostic Fault Information
Circuit/System Description
The heated seat temperature sensor that set this diagnostic trouble code (DTC) is located in the seat cushion just under the seat cover with the seat
heating element. The rear heated seat module (RHSM) supplies a 5 V reference voltage through the temperature sensor signal circuit and a ground
through the low reference circuit to the sensor. The RHSM monitors the voltage of the sensor signal circuit to determine the temperature of the seat.
The temperature sensor varies in resistance based on the temperature of the heating element causing the signal voltage to change. Once the seat
reaches the set temperature, the RHSM will then cycle the control circuit of the heating elements ON and OFF in order to maintain the desired seat
temperature based on the feedback voltage from the sensor.
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.
6. 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
Rear Heated Seat Module
DTC B1925 or B2170 (w/o HP2 with Memory)
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 B1925 02
- Left Seat Cushion Heater Sensor Circuit Shorted to Ground
DTC B1925 05
- Left Seat Cushion Heater Sensor Circuit Shorted to Battery or Open
DTC B2170 02
- Right Seat Heater Cushion Sensor Circuit Shorted to Ground
DTC B2170 05
- Right Seat Heater Cushion Sensor Circuit Shorted to Battery or Open
Diagnostic Fault Information
Circuit/System Description
The heated seat temperature sensor that set this diagnostic trouble code (DTC) is located in the seat cushion just under the seat cover with the seat
heating element. The rear heated seat module (RHSM) supplies a 5 V reference voltage through the temperature sensor signal circuit and a ground
through the low reference circuit to the sensor. The RHSM monitors the voltage of the sensor signal circuit to determine the temperature of the seat.
The temperature sensor varies in resistance based on the temperature of the heating element causing the signal voltage to change. Once the seat
reaches the set temperature, the RHSM will then cycle the control circuit of the heating elements ON and OFF in order to maintain the desired seat
temperature based on the feedback voltage from the sensor.
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 547
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 547
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.
6. 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
B1935
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
DTC B1935 0C
- Left Seat Back Heater Circuit Current Below Threshold
DTC B1935 0D
- Left Seat Back Heater Circuit Resistance Above Threshold
DTC B1935 0E
- Left Seat Back Heater Circuit Resistance Below Threshold
DTC B1935 1F
- Left Seat Back Heater Circuit Intermittent
DTC B2180 04
- Right Seat Back Heater Circuit Open
DTC B2180 0A
- Right Seat Back Heater Circuit Rate of Change Below Threshold
DTC B2180 0B
- Right Seat Back Heater Circuit Current Above Threshold
DTC B2180 0C
- Right Seat Back Heater Circuit Current Below Threshold
DTC B2180 0D
- Right Seat Back Heater Circuit Resistance Above Threshold
DTC B2180 0E
- Right Seat Back Heater Circuit Resistance Below Threshold
DTC B2180 1F
- Right Seat Back Heater Circuit Intermittent
Diagnostic Fault Information
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.
6. 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
B1935
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
DTC B1935 0C
- Left Seat Back Heater Circuit Current Below Threshold
DTC B1935 0D
- Left Seat Back Heater Circuit Resistance Above Threshold
DTC B1935 0E
- Left Seat Back Heater Circuit Resistance Below Threshold
DTC B1935 1F
- Left Seat Back Heater Circuit Intermittent
DTC B2180 04
- Right Seat Back Heater Circuit Open
DTC B2180 0A
- Right Seat Back Heater Circuit Rate of Change Below Threshold
DTC B2180 0B
- Right Seat Back Heater Circuit Current Above Threshold
DTC B2180 0C
- Right Seat Back Heater Circuit Current Below Threshold
DTC B2180 0D
- Right Seat Back Heater Circuit Resistance Above Threshold
DTC B2180 0E
- Right Seat Back Heater Circuit Resistance Below Threshold
DTC B2180 1F
- Right Seat Back Heater Circuit Intermittent
Diagnostic Fault Information
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