2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 839
Failure to follow the procedures exactly as written may result in serious injury or death.
Important: Verify the motor connector is securely connected and not loose.
Verify that DTC C056D is not set.
If the DTC is set, replace the PSCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for PSCM replacement, setup, and programming
Data Communications
DTC C056E
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 C056E XX
- Electronic Control Unit Software
Circuit/System Description
Some control modules must be configured with specific software, serial numbers, vehicle options, or other information. If a control module was not
properly configured after installation that module may set DTC C056E. The symptom byte listed in the DTC Descriptor is for engineering reference
only. No external circuit diagnosis is involved.
Conditions for Running the DTC
Battery voltage is between 9-16 V and data link communications operate normally.
Conditions for Setting the DTC
The control module is not configured properly.
Conditions for Clearing the DTC
* A current DTC clears when the malfunction is no longer present.
* A history DTC clears when the module ignition cycle counter reaches the reset threshold, without a repeat of the malfunction.
Reference Information
Schematic Reference
Data Communication Schematics (See: Powertrain Management/Computers and Control Systems/Information Bus/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Data Link Communications Description and Operation (See: Powertrain Management/Computers and Control Systems/Information
Bus/Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
Showing posts with label Failure to follow the procedures exactly as written may result in serious injury or death.. Show all posts
Showing posts with label Failure to follow the procedures exactly as written may result in serious injury or death.. Show all posts
Sunday, November 17, 2019
Thursday, November 7, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1372
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1372
Failure to follow the procedures exactly as written may result in serious injury or death.
1. Ignition OFF, disable the high voltage at the drive motor generator battery. Refer to High Voltage Disabling ().
2. Disconnect the X4 harness connector at the drive motor battery control module.
3. Connect the EL-48571 high voltage battery pin out box.
4. Install the high voltage manual disconnect lever. Measure and record each of the 20 battery voltages.
5. Each battery voltage reading should be between 10-19 V.
瀚慖f not within the specified range, replace the drive motor battery assembly.
6. Each battery voltage reading should be within 1.5 V of each other.
瀚慖f not within the specified range, replace the drive motor battery assembly.
7. If all circuits test normal, replace the drive motor generator battery control module.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the repair.
* Drive Motor Generator Battery Replacement and Shipping Preparation ()
* Control Module References (See: Testing and Inspection/Programming and Relearning) for drive motor generator battery control module
replacement, setup and programming
P0B8C
DTC P0B3C, P0B41, P0B46, P0B4B, P0B50, P0B55, P0B5A, P0B5F, P0B64, P0B69, P0B6E, P0B73, P0B78, P0B7D, P0B82, P0B87, P0B8C,
P0B91, P0B96, or P0B9B
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 P0B3C
- Hybrid Battery 1 Circuit Performance
DTC P0B41
- Hybrid Battery 2 Circuit Performance
DTC P0B46
- Hybrid Battery 3 Circuit Performance
DTC P0B4B
- Hybrid Battery 4 Circuit Performance
DTC P0B50
- Hybrid Battery 5 Circuit Performance
DTC P0B55
- Hybrid Battery 6 Circuit Performance
DTC P0B5A
- Hybrid Battery 7 Circuit Performance
DTC P0B5F
- Hybrid Battery 8 Circuit Performance
DTC P0B64
- Hybrid Battery 9 Circuit Performance
DTC P0B69
- Hybrid Battery 10 Circuit Performance
Failure to follow the procedures exactly as written may result in serious injury or death.
1. Ignition OFF, disable the high voltage at the drive motor generator battery. Refer to High Voltage Disabling ().
2. Disconnect the X4 harness connector at the drive motor battery control module.
3. Connect the EL-48571 high voltage battery pin out box.
4. Install the high voltage manual disconnect lever. Measure and record each of the 20 battery voltages.
5. Each battery voltage reading should be between 10-19 V.
瀚慖f not within the specified range, replace the drive motor battery assembly.
6. Each battery voltage reading should be within 1.5 V of each other.
瀚慖f not within the specified range, replace the drive motor battery assembly.
7. If all circuits test normal, replace the drive motor generator battery control module.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the repair.
* Drive Motor Generator Battery Replacement and Shipping Preparation ()
* Control Module References (See: Testing and Inspection/Programming and Relearning) for drive motor generator battery control module
replacement, setup and programming
P0B8C
DTC P0B3C, P0B41, P0B46, P0B4B, P0B50, P0B55, P0B5A, P0B5F, P0B64, P0B69, P0B6E, P0B73, P0B78, P0B7D, P0B82, P0B87, P0B8C,
P0B91, P0B96, or P0B9B
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 P0B3C
- Hybrid Battery 1 Circuit Performance
DTC P0B41
- Hybrid Battery 2 Circuit Performance
DTC P0B46
- Hybrid Battery 3 Circuit Performance
DTC P0B4B
- Hybrid Battery 4 Circuit Performance
DTC P0B50
- Hybrid Battery 5 Circuit Performance
DTC P0B55
- Hybrid Battery 6 Circuit Performance
DTC P0B5A
- Hybrid Battery 7 Circuit Performance
DTC P0B5F
- Hybrid Battery 8 Circuit Performance
DTC P0B64
- Hybrid Battery 9 Circuit Performance
DTC P0B69
- Hybrid Battery 10 Circuit Performance
Monday, November 4, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1039
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1039
Failure to follow the procedures exactly as written may result in serious injury or death.
1. Ignition OFF, disconnect the 42V harness connector X2 at the APM.
2. Ignition OFF and scan tool disconnected, open and close the driver door, and wait 1 minute. Test for less than 3 ohms between the ground
circuit terminal 1 X2 of the APM and ground.
瀚慖f greater than the specified range, test the APM ground circuits for an open/high resistance. If the circuits test normal, replace the APM.
3. Ignition OFF, connect a DMM between the 42V+ circuit terminal 2 X2 of the APM and ground.
4. Ignition ON, command the APM Intermediate Voltage Control ON with a scan tool. Test for 37.5-60 volts between the 42V+ circuit terminal
2 X2 terminal and ground. Command the APM Intermediate Voltage Control OFF after completing this test.
瀚慖f not within the specified range, replace the APM.
5. Ignition OFF, verify that the 42V harness connector X2 is connected under the PSCM.
瀚慖f the connector is not connected, connect the connector.
6. If all circuits test normal, replace the PSCM.
Low Voltage When Turning
1. Inspect the steering system for mechanical binding. The steering should have a heavy feel, if the power steering is disabled, but should not
bind.
瀚慖f there is any mechanical binding in the steering system, refer to Steering Effort Hard in One or Both Directions (Standard) (See:
Steering and Suspension/Steering/Testing and Inspection/Symptom Related Diagnostic Procedures/Steering Effort Hard in One or Both
Directions (Standard))Steering Effort Hard in One or Both Directions (HP2) ().
2. If all circuits test normal, replace the power steering motor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Power Steering Assist Motor Replacement (See: Steering and Suspension/Steering/Power Steering/Power Steering Motor/Service and
Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for APM or PSCM replacement, setup and
programming
MP 3010-NP0 - Transfer Case
DTC C0896
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 C0896 03
- Device Voltage Range Below Threshold
DTC C0896 07
- Device Voltage Range Above Threshold
Circuit/System Description
The transfer case shift control module (TCCM) monitors the battery voltage feed to the TCCM. This DTC detects if the battery voltage is out of
range. This could indicate a vehicle wide issue in which all electrical components would be affected, or it could be TCCM specific due to poor
power or ground connections.
Conditions for Running the DTC
Failure to follow the procedures exactly as written may result in serious injury or death.
1. Ignition OFF, disconnect the 42V harness connector X2 at the APM.
2. Ignition OFF and scan tool disconnected, open and close the driver door, and wait 1 minute. Test for less than 3 ohms between the ground
circuit terminal 1 X2 of the APM and ground.
瀚慖f greater than the specified range, test the APM ground circuits for an open/high resistance. If the circuits test normal, replace the APM.
3. Ignition OFF, connect a DMM between the 42V+ circuit terminal 2 X2 of the APM and ground.
4. Ignition ON, command the APM Intermediate Voltage Control ON with a scan tool. Test for 37.5-60 volts between the 42V+ circuit terminal
2 X2 terminal and ground. Command the APM Intermediate Voltage Control OFF after completing this test.
瀚慖f not within the specified range, replace the APM.
5. Ignition OFF, verify that the 42V harness connector X2 is connected under the PSCM.
瀚慖f the connector is not connected, connect the connector.
6. If all circuits test normal, replace the PSCM.
Low Voltage When Turning
1. Inspect the steering system for mechanical binding. The steering should have a heavy feel, if the power steering is disabled, but should not
bind.
瀚慖f there is any mechanical binding in the steering system, refer to Steering Effort Hard in One or Both Directions (Standard) (See:
Steering and Suspension/Steering/Testing and Inspection/Symptom Related Diagnostic Procedures/Steering Effort Hard in One or Both
Directions (Standard))Steering Effort Hard in One or Both Directions (HP2) ().
2. If all circuits test normal, replace the power steering motor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Power Steering Assist Motor Replacement (See: Steering and Suspension/Steering/Power Steering/Power Steering Motor/Service and
Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for APM or PSCM replacement, setup and
programming
MP 3010-NP0 - Transfer Case
DTC C0896
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 C0896 03
- Device Voltage Range Below Threshold
DTC C0896 07
- Device Voltage Range Above Threshold
Circuit/System Description
The transfer case shift control module (TCCM) monitors the battery voltage feed to the TCCM. This DTC detects if the battery voltage is out of
range. This could indicate a vehicle wide issue in which all electrical components would be affected, or it could be TCCM specific due to poor
power or ground connections.
Conditions for Running the DTC
Thursday, October 31, 2019
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1691
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1691
Failure to follow the procedures exactly as written may result in serious injury or death.
Important: Removal of the HV manual disconnect lever also opens the HVIC source circuit between X350 and BECM connector X1.
锟斤拷If the circuit tests normal, perform the High Voltage Disabling () procedure and test the HVIC Source circuit for an open between X350
and BECM connector X1. If the circuit tests normal, replace the BECM.
P1AE3 with or without P1B05 and P1B06
Important: DTCs P1B05 and P1B06 should always pass and fail together. If one DTC has passed while one has failed, replace the
drive motor generator power inverter control module (PIM).
1. Ignition OFF, wait 2 minutes.
Important: The drive motor generator control module sight shield must be installed during all testing in order to complete the HVIC
current loop.
2. Disconnect PIM connector X1.
3. Ignition ON, observe the BECM HVIC Source Current parameter. The parameter should display less than 5 mA.
锟斤拷If the HVIC Source Current parameter indicates current between 5-18 mA test the HVIC Source circuit for a short to ground between
PIM connector X1 and X350.
Danger: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection. Personal
Protection Equipment (PPE) and proper procedures must be followed.
The High Voltage Disabling procedure will perform the following tasks:
* Identify how to disable high voltage.
* Identify how to test for the presence of high voltage.
* Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures
must be followed.
Failure to follow the procedures exactly as written may result in serious injury or death.
Important: Removal of the HV manual disconnect lever also opens the HVIC source circuit between X350 and BECM connector X1.
If the circuit tests normal, perform the High Voltage Disabling () procedure and test the HVIC Source circuit for a short to ground between X350
and BECM connector X1. If the circuit tests normal, replace the BECM.
4. Install a 3A fused jumper wire between the HVIC return circuit terminal 1 and the HVIC Source circuit terminal 23.
5. Observe the BECM HVIC Source Current and HVIC Return Current parameters with the scan tool.
锟斤拷If both HVIC Source Current and HVIC Return Current parameters indicate current between 5-18 mA, replace the PIM.
锟斤拷If only the HVIC Source Current parameter indicates current between 5-18 mA test the HVIC Return circuit for a short to ground
between PIM connector X1 and X350.
Danger: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection. Personal
Protection Equipment (PPE) and proper procedures must be followed.
The High Voltage Disabling procedure will perform the following tasks:
* Identify how to disable high voltage.
* Identify how to test for the presence of high voltage.
* Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures
must be followed.
Failure to follow the procedures exactly as written may result in serious injury or death.
If the circuit tests normal, perform the High Voltage Disabling () procedure and test the HVIC Return circuit for a short to ground between X350
and BECM connector X1. If the circuit tests normal, replace the BECM.
P1AE4 with or without P1B05 and P1B06
Important: DTCs P1B05 and P1B06 should always pass and fail together. If one DTC has passed while one has failed, replace the
drive motor generator power inverter control module (PIM).
Failure to follow the procedures exactly as written may result in serious injury or death.
Important: Removal of the HV manual disconnect lever also opens the HVIC source circuit between X350 and BECM connector X1.
锟斤拷If the circuit tests normal, perform the High Voltage Disabling () procedure and test the HVIC Source circuit for an open between X350
and BECM connector X1. If the circuit tests normal, replace the BECM.
P1AE3 with or without P1B05 and P1B06
Important: DTCs P1B05 and P1B06 should always pass and fail together. If one DTC has passed while one has failed, replace the
drive motor generator power inverter control module (PIM).
1. Ignition OFF, wait 2 minutes.
Important: The drive motor generator control module sight shield must be installed during all testing in order to complete the HVIC
current loop.
2. Disconnect PIM connector X1.
3. Ignition ON, observe the BECM HVIC Source Current parameter. The parameter should display less than 5 mA.
锟斤拷If the HVIC Source Current parameter indicates current between 5-18 mA test the HVIC Source circuit for a short to ground between
PIM connector X1 and X350.
Danger: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection. Personal
Protection Equipment (PPE) and proper procedures must be followed.
The High Voltage Disabling procedure will perform the following tasks:
* Identify how to disable high voltage.
* Identify how to test for the presence of high voltage.
* Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures
must be followed.
Failure to follow the procedures exactly as written may result in serious injury or death.
Important: Removal of the HV manual disconnect lever also opens the HVIC source circuit between X350 and BECM connector X1.
If the circuit tests normal, perform the High Voltage Disabling () procedure and test the HVIC Source circuit for a short to ground between X350
and BECM connector X1. If the circuit tests normal, replace the BECM.
4. Install a 3A fused jumper wire between the HVIC return circuit terminal 1 and the HVIC Source circuit terminal 23.
5. Observe the BECM HVIC Source Current and HVIC Return Current parameters with the scan tool.
锟斤拷If both HVIC Source Current and HVIC Return Current parameters indicate current between 5-18 mA, replace the PIM.
锟斤拷If only the HVIC Source Current parameter indicates current between 5-18 mA test the HVIC Return circuit for a short to ground
between PIM connector X1 and X350.
Danger: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection. Personal
Protection Equipment (PPE) and proper procedures must be followed.
The High Voltage Disabling procedure will perform the following tasks:
* Identify how to disable high voltage.
* Identify how to test for the presence of high voltage.
* Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures
must be followed.
Failure to follow the procedures exactly as written may result in serious injury or death.
If the circuit tests normal, perform the High Voltage Disabling () procedure and test the HVIC Return circuit for a short to ground between X350
and BECM connector X1. If the circuit tests normal, replace the BECM.
P1AE4 with or without P1B05 and P1B06
Important: DTCs P1B05 and P1B06 should always pass and fail together. If one DTC has passed while one has failed, replace the
drive motor generator power inverter control module (PIM).
Wednesday, October 30, 2019
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1599
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1599
Failure to follow the procedures exactly as written may result in serious injury or death.
If the circuit tests normal, perform the High Voltage Disabling () procedure and test the HVIC Return circuit for a short to ground between X350
and BECM connector X1. If the circuit tests normal, replace the BECM.
P1AE4 with or without P1B05 and P1B06
Important: DTCs P1B05 and P1B06 should always pass and fail together. If one DTC has passed while one has failed, replace the
drive motor generator power inverter control module (PIM).
1. Ignition OFF, wait 2 minutes.
Important: The drive motor generator control module sight shield must be installed during all testing in order to complete the HVIC
current loop.
2. Disconnect PIM connector X1.
3. Ignition ON, test for less than 35 mA with a DMM between the HVIC Source circuit terminal 23 and ground.
锟斤拷If more than the specified range, test the HVIC Source circuit for a short to voltage between PIM connector X1 and X350.
Danger: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection. Personal
Protection Equipment (PPE) and proper procedures must be followed.
The High Voltage Disabling procedure will perform the following tasks:
* Identify how to disable high voltage.
* Identify how to test for the presence of high voltage.
* Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures
must be followed.
Failure to follow the procedures exactly as written may result in serious injury or death.
Important: Removal of the HV manual disconnect lever also opens the HVIC source circuit between X350 and BECM connector X1.
If the circuit tests normal, perform the High Voltage Disabling () procedure and test the HVIC Source circuit for a short to voltage between X350
and BECM connector X1. If the circuit tests normal, replace the BECM.
4. Ignition ON, test for less than 35 mA with a DMM between the HVIC Return circuit terminal 1 and ground.
锟斤拷If more than the specified range, test the HVIC Return circuit for a short to voltage between PIM connector X1 and X350.
Danger: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection. Personal
Protection Equipment (PPE) and proper procedures must be followed.
The High Voltage Disabling procedure will perform the following tasks:
* Identify how to disable high voltage.
* Identify how to test for the presence of high voltage.
* Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures
must be followed.
Failure to follow the procedures exactly as written may result in serious injury or death.
If the circuit tests normal, perform the High Voltage Disabling () procedure and test the HVIC Return circuit for a short to voltage between X350
and BECM connector X1. If the circuit tests normal, replace the BECM.
5. If all circuits test normal, replace the PIM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM or BECM replacement, setup, and programming
Failure to follow the procedures exactly as written may result in serious injury or death.
If the circuit tests normal, perform the High Voltage Disabling () procedure and test the HVIC Return circuit for a short to ground between X350
and BECM connector X1. If the circuit tests normal, replace the BECM.
P1AE4 with or without P1B05 and P1B06
Important: DTCs P1B05 and P1B06 should always pass and fail together. If one DTC has passed while one has failed, replace the
drive motor generator power inverter control module (PIM).
1. Ignition OFF, wait 2 minutes.
Important: The drive motor generator control module sight shield must be installed during all testing in order to complete the HVIC
current loop.
2. Disconnect PIM connector X1.
3. Ignition ON, test for less than 35 mA with a DMM between the HVIC Source circuit terminal 23 and ground.
锟斤拷If more than the specified range, test the HVIC Source circuit for a short to voltage between PIM connector X1 and X350.
Danger: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection. Personal
Protection Equipment (PPE) and proper procedures must be followed.
The High Voltage Disabling procedure will perform the following tasks:
* Identify how to disable high voltage.
* Identify how to test for the presence of high voltage.
* Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures
must be followed.
Failure to follow the procedures exactly as written may result in serious injury or death.
Important: Removal of the HV manual disconnect lever also opens the HVIC source circuit between X350 and BECM connector X1.
If the circuit tests normal, perform the High Voltage Disabling () procedure and test the HVIC Source circuit for a short to voltage between X350
and BECM connector X1. If the circuit tests normal, replace the BECM.
4. Ignition ON, test for less than 35 mA with a DMM between the HVIC Return circuit terminal 1 and ground.
锟斤拷If more than the specified range, test the HVIC Return circuit for a short to voltage between PIM connector X1 and X350.
Danger: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection. Personal
Protection Equipment (PPE) and proper procedures must be followed.
The High Voltage Disabling procedure will perform the following tasks:
* Identify how to disable high voltage.
* Identify how to test for the presence of high voltage.
* Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures
must be followed.
Failure to follow the procedures exactly as written may result in serious injury or death.
If the circuit tests normal, perform the High Voltage Disabling () procedure and test the HVIC Return circuit for a short to voltage between X350
and BECM connector X1. If the circuit tests normal, replace the BECM.
5. If all circuits test normal, replace the PIM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM or BECM replacement, setup, and programming
Sunday, October 27, 2019
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1372
2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1372
Failure to follow the procedures exactly as written may result in serious injury or death.
1. Ignition OFF, disable the high voltage at the drive motor generator battery. Refer to High Voltage Disabling ().
2. Disconnect the X4 harness connector at the drive motor battery control module.
3. Connect the EL-48571 high voltage battery pin out box.
4. Install the high voltage manual disconnect lever. Measure and record each of the 20 battery voltages.
5. Each battery voltage reading should be between 10-19 V.
锟斤拷If not within the specified range, replace the drive motor battery assembly.
6. Each battery voltage reading should be within 1.5 V of each other.
锟斤拷If not within the specified range, replace the drive motor battery assembly.
7. If all circuits test normal, replace the drive motor generator battery control module.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the repair.
* Drive Motor Generator Battery Replacement and Shipping Preparation ()
* Control Module References (See: Testing and Inspection/Programming and Relearning) for drive motor generator battery control module
replacement, setup and programming
P0B8C
DTC P0B3C, P0B41, P0B46, P0B4B, P0B50, P0B55, P0B5A, P0B5F, P0B64, P0B69, P0B6E, P0B73, P0B78, P0B7D, P0B82, P0B87, P0B8C,
P0B91, P0B96, or P0B9B
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 P0B3C
- Hybrid Battery 1 Circuit Performance
DTC P0B41
- Hybrid Battery 2 Circuit Performance
DTC P0B46
- Hybrid Battery 3 Circuit Performance
DTC P0B4B
- Hybrid Battery 4 Circuit Performance
DTC P0B50
- Hybrid Battery 5 Circuit Performance
DTC P0B55
- Hybrid Battery 6 Circuit Performance
DTC P0B5A
- Hybrid Battery 7 Circuit Performance
DTC P0B5F
- Hybrid Battery 8 Circuit Performance
DTC P0B64
- Hybrid Battery 9 Circuit Performance
DTC P0B69
- Hybrid Battery 10 Circuit Performance
Failure to follow the procedures exactly as written may result in serious injury or death.
1. Ignition OFF, disable the high voltage at the drive motor generator battery. Refer to High Voltage Disabling ().
2. Disconnect the X4 harness connector at the drive motor battery control module.
3. Connect the EL-48571 high voltage battery pin out box.
4. Install the high voltage manual disconnect lever. Measure and record each of the 20 battery voltages.
5. Each battery voltage reading should be between 10-19 V.
锟斤拷If not within the specified range, replace the drive motor battery assembly.
6. Each battery voltage reading should be within 1.5 V of each other.
锟斤拷If not within the specified range, replace the drive motor battery assembly.
7. If all circuits test normal, replace the drive motor generator battery control module.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the repair.
* Drive Motor Generator Battery Replacement and Shipping Preparation ()
* Control Module References (See: Testing and Inspection/Programming and Relearning) for drive motor generator battery control module
replacement, setup and programming
P0B8C
DTC P0B3C, P0B41, P0B46, P0B4B, P0B50, P0B55, P0B5A, P0B5F, P0B64, P0B69, P0B6E, P0B73, P0B78, P0B7D, P0B82, P0B87, P0B8C,
P0B91, P0B96, or P0B9B
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 P0B3C
- Hybrid Battery 1 Circuit Performance
DTC P0B41
- Hybrid Battery 2 Circuit Performance
DTC P0B46
- Hybrid Battery 3 Circuit Performance
DTC P0B4B
- Hybrid Battery 4 Circuit Performance
DTC P0B50
- Hybrid Battery 5 Circuit Performance
DTC P0B55
- Hybrid Battery 6 Circuit Performance
DTC P0B5A
- Hybrid Battery 7 Circuit Performance
DTC P0B5F
- Hybrid Battery 8 Circuit Performance
DTC P0B64
- Hybrid Battery 9 Circuit Performance
DTC P0B69
- Hybrid Battery 10 Circuit Performance
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