2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1493

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1493

DTCs P0B3E, P0B43, P0B48, P0B4D, P0B52, P0B57, P0B5C, P0B61, P0B66, P0B6B, P0B70, P0B75, P0B7A, P0B7F, P0B84, P0B89, P0B8E,

P0B93, P0B98, and P0B9D are type B DTCs.

Reference Information

Schematic Reference

Hybrid Energy Storage Schematics ()

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

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)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Special Tools

* EL-48571 High Voltage Battery Pin Out Box

* EL-48900 HEV Safety Kit

Circuit/System Verification

Ignition ON, observe the scan tool Hybrid Battery 1-20 parameters. Each reading should be between 10-19 V and all readings should be within 1.5

V of each other.

Circuit/System Testing

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.

Before working on any high voltage system, be sure to wear the following Personal Protection Equipment:

* Safety glasses with appropriate side shields when within 50 feet of the vehicle, either indoors or outdoors.

* Certified and up-to-date Class "0" Insulation gloves rated at 1000V with leather protectors.

- Visually and functionally inspect the gloves before use.

- Wear the Insulation gloves at all times when working with the high voltage battery assembly, whether the system is energized or

not.

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.

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1442

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1442

DTC P0B3E, P0B43, P0B48, P0B4D, P0B52, P0B57, P0B5C, P0B61, P0B66, P0B6B, P0B70, P0B75, P0B7A, P0B7F, P0B84, P0B89, P0B8E,

P0B93, P0B98, or P0B9D

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 P0B3E

- Hybrid Battery 1 Circuit High Voltage

DTC P0B43

- Hybrid Battery 2 Circuit High Voltage

DTC P0B48

- Hybrid Battery 3 Circuit High Voltage

DTC P0B4D

- Hybrid Battery 4 Circuit High Voltage

DTC P0B52

- Hybrid Battery 5 Circuit High Voltage

DTC P0B57

- Hybrid Battery 6 Circuit High Voltage

DTC P0B5C

- Hybrid Battery 7 Circuit High Voltage

DTC P0B61

- Hybrid Battery 8 Circuit High Voltage

DTC P0B66

- Hybrid Battery 9 Circuit High Voltage

DTC P0B6B

- Hybrid Battery 10 Circuit High Voltage

DTC P0B70

- Hybrid Battery 11 Circuit High Voltage

DTC P0B75

- Hybrid Battery 12 Circuit High Voltage

DTC P0B7A

- Hybrid Battery 13 Circuit High Voltage

DTC P0B7F

- Hybrid Battery 14 Circuit High Voltage

DTC P0B84

- Hybrid Battery 15 Circuit High Voltage

DTC P0B89

- Hybrid Battery 16 Circuit High Voltage

DTC P0B8E

- Hybrid Battery 17 Circuit High Voltage

DTC P0B93

- Hybrid Battery 18 Circuit High Voltage

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1406

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1406

DTCs P0B3E, P0B43, P0B48, P0B4D, P0B52, P0B57, P0B5C, P0B61, P0B66, P0B6B, P0B70, P0B75, P0B7A, P0B7F, P0B84, P0B89, P0B8E,

P0B93, P0B98, and P0B9D are type B DTCs.

Reference Information

Schematic Reference

Hybrid Energy Storage Schematics ()

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

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)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Special Tools

* EL-48571 High Voltage Battery Pin Out Box

* EL-48900 HEV Safety Kit

Circuit/System Verification

Ignition ON, observe the scan tool Hybrid Battery 1-20 parameters. Each reading should be between 10-19 V and all readings should be within 1.5

V of each other.

Circuit/System Testing

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.

Before working on any high voltage system, be sure to wear the following Personal Protection Equipment:

* Safety glasses with appropriate side shields when within 50 feet of the vehicle, either indoors or outdoors.

* Certified and up-to-date Class "0" Insulation gloves rated at 1000V with leather protectors.

- Visually and functionally inspect the gloves before use.

- Wear the Insulation gloves at all times when working with the high voltage battery assembly, whether the system is energized or

not.

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.

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1371

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1371

* DTCs P0B3E, P0B43, P0B48, P0B4D, P0B52, P0B57, P0B5C, P0B61, P0B66, P0B6B, P0B70, P0B75, P0B7A, P0B7F, P0B84, P0B89,

P0B8E, P0B93, P0B98, and P0B9D are type B DTCs.

* The drive motor generator battery control module commands the battery vent fan to high speed.

* If more than 4 of these DTCs are set, the drive motor generator battery control module sends a message to the hybrid powertrain control

module to reduce the power use limit to 50 percent.

Conditions for Clearing the DTC

DTCs P0B3E, P0B43, P0B48, P0B4D, P0B52, P0B57, P0B5C, P0B61, P0B66, P0B6B, P0B70, P0B75, P0B7A, P0B7F, P0B84, P0B89, P0B8E,

P0B93, P0B98, and P0B9D are type B DTCs.

Reference Information

Schematic Reference

Hybrid Energy Storage Schematics ()

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

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)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Special Tools

* EL-48571 High Voltage Battery Pin Out Box

* EL-48900 HEV Safety Kit

Circuit/System Verification

Ignition ON, observe the scan tool Hybrid Battery 1-20 parameters. Each reading should be between 10-19 V and all readings should be within 1.5

V of each other.

Circuit/System Testing

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.

Before working on any high voltage system, be sure to wear the following Personal Protection Equipment:

* Safety glasses with appropriate side shields when within 50 feet of the vehicle, either indoors or outdoors.

* Certified and up-to-date Class "0" Insulation gloves rated at 1000V with leather protectors.

- Visually and functionally inspect the gloves before use.

- Wear the Insulation gloves at all times when working with the high voltage battery assembly, whether the system is energized or

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1345

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1345

DTCs P0B3E, P0B43, P0B48, P0B4D, P0B52, P0B57, P0B5C, P0B61, P0B66, P0B6B, P0B70, P0B75, P0B7A, P0B7F, P0B84, P0B89, P0B8E,

P0B93, P0B98, and P0B9D are type B DTCs.

Reference Information

Schematic Reference

Hybrid Energy Storage Schematics ()

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

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)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Special Tools

* EL-48571 High Voltage Battery Pin Out Box

* EL-48900 HEV Safety Kit

Circuit/System Verification

Ignition ON, observe the scan tool Hybrid Battery 1-20 parameters. Each reading should be between 10-19 V and all readings should be within 1.5

V of each other.

Circuit/System Testing

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.

Before working on any high voltage system, be sure to wear the following Personal Protection Equipment:

* Safety glasses with appropriate side shields when within 50 feet of the vehicle, either indoors or outdoors.

* Certified and up-to-date Class "0" Insulation gloves rated at 1000V with leather protectors.

- Visually and functionally inspect the gloves before use.

- Wear the Insulation gloves at all times when working with the high voltage battery assembly, whether the system is energized or

not.

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.

2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1493

2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1493

DTCs P0B3E, P0B43, P0B48, P0B4D, P0B52, P0B57, P0B5C, P0B61, P0B66, P0B6B, P0B70, P0B75, P0B7A, P0B7F, P0B84, P0B89, P0B8E,

P0B93, P0B98, and P0B9D are type B DTCs.

Reference Information

Schematic Reference

Hybrid Energy Storage Schematics ()

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

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)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Special Tools

* EL-48571 High Voltage Battery Pin Out Box

* EL-48900 HEV Safety Kit

Circuit/System Verification

Ignition ON, observe the scan tool Hybrid Battery 1-20 parameters. Each reading should be between 10-19 V and all readings should be within 1.5

V of each other.

Circuit/System Testing

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.

Before working on any high voltage system, be sure to wear the following Personal Protection Equipment:

* Safety glasses with appropriate side shields when within 50 feet of the vehicle, either indoors or outdoors.

* Certified and up-to-date Class "0" Insulation gloves rated at 1000V with leather protectors.

- Visually and functionally inspect the gloves before use.

- Wear the Insulation gloves at all times when working with the high voltage battery assembly, whether the system is energized or

not.

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.

2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1442

2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1442

DTC P0B3E, P0B43, P0B48, P0B4D, P0B52, P0B57, P0B5C, P0B61, P0B66, P0B6B, P0B70, P0B75, P0B7A, P0B7F, P0B84, P0B89, P0B8E,

P0B93, P0B98, or P0B9D

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 P0B3E

- Hybrid Battery 1 Circuit High Voltage

DTC P0B43

- Hybrid Battery 2 Circuit High Voltage

DTC P0B48

- Hybrid Battery 3 Circuit High Voltage

DTC P0B4D

- Hybrid Battery 4 Circuit High Voltage

DTC P0B52

- Hybrid Battery 5 Circuit High Voltage

DTC P0B57

- Hybrid Battery 6 Circuit High Voltage

DTC P0B5C

- Hybrid Battery 7 Circuit High Voltage

DTC P0B61

- Hybrid Battery 8 Circuit High Voltage

DTC P0B66

- Hybrid Battery 9 Circuit High Voltage

DTC P0B6B

- Hybrid Battery 10 Circuit High Voltage

DTC P0B70

- Hybrid Battery 11 Circuit High Voltage

DTC P0B75

- Hybrid Battery 12 Circuit High Voltage

DTC P0B7A

- Hybrid Battery 13 Circuit High Voltage

DTC P0B7F

- Hybrid Battery 14 Circuit High Voltage

DTC P0B84

- Hybrid Battery 15 Circuit High Voltage

DTC P0B89

- Hybrid Battery 16 Circuit High Voltage

DTC P0B8E

- Hybrid Battery 17 Circuit High Voltage

DTC P0B93

- Hybrid Battery 18 Circuit High Voltage

2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1406

2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1406

DTCs P0B3E, P0B43, P0B48, P0B4D, P0B52, P0B57, P0B5C, P0B61, P0B66, P0B6B, P0B70, P0B75, P0B7A, P0B7F, P0B84, P0B89, P0B8E,

P0B93, P0B98, and P0B9D are type B DTCs.

Reference Information

Schematic Reference

Hybrid Energy Storage Schematics ()

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

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)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Special Tools

* EL-48571 High Voltage Battery Pin Out Box

* EL-48900 HEV Safety Kit

Circuit/System Verification

Ignition ON, observe the scan tool Hybrid Battery 1-20 parameters. Each reading should be between 10-19 V and all readings should be within 1.5

V of each other.

Circuit/System Testing

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.

Before working on any high voltage system, be sure to wear the following Personal Protection Equipment:

* Safety glasses with appropriate side shields when within 50 feet of the vehicle, either indoors or outdoors.

* Certified and up-to-date Class "0" Insulation gloves rated at 1000V with leather protectors.

- Visually and functionally inspect the gloves before use.

- Wear the Insulation gloves at all times when working with the high voltage battery assembly, whether the system is energized or

not.

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.

2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1371

2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1371

* DTCs P0B3E, P0B43, P0B48, P0B4D, P0B52, P0B57, P0B5C, P0B61, P0B66, P0B6B, P0B70, P0B75, P0B7A, P0B7F, P0B84, P0B89,

P0B8E, P0B93, P0B98, and P0B9D are type B DTCs.

* The drive motor generator battery control module commands the battery vent fan to high speed.

* If more than 4 of these DTCs are set, the drive motor generator battery control module sends a message to the hybrid powertrain control

module to reduce the power use limit to 50 percent.

Conditions for Clearing the DTC

DTCs P0B3E, P0B43, P0B48, P0B4D, P0B52, P0B57, P0B5C, P0B61, P0B66, P0B6B, P0B70, P0B75, P0B7A, P0B7F, P0B84, P0B89, P0B8E,

P0B93, P0B98, and P0B9D are type B DTCs.

Reference Information

Schematic Reference

Hybrid Energy Storage Schematics ()

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

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)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Special Tools

* EL-48571 High Voltage Battery Pin Out Box

* EL-48900 HEV Safety Kit

Circuit/System Verification

Ignition ON, observe the scan tool Hybrid Battery 1-20 parameters. Each reading should be between 10-19 V and all readings should be within 1.5

V of each other.

Circuit/System Testing

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.

Before working on any high voltage system, be sure to wear the following Personal Protection Equipment:

* Safety glasses with appropriate side shields when within 50 feet of the vehicle, either indoors or outdoors.

* Certified and up-to-date Class "0" Insulation gloves rated at 1000V with leather protectors.

- Visually and functionally inspect the gloves before use.

- Wear the Insulation gloves at all times when working with the high voltage battery assembly, whether the system is energized or

2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1345

2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1345

DTCs P0B3E, P0B43, P0B48, P0B4D, P0B52, P0B57, P0B5C, P0B61, P0B66, P0B6B, P0B70, P0B75, P0B7A, P0B7F, P0B84, P0B89, P0B8E,

P0B93, P0B98, and P0B9D are type B DTCs.

Reference Information

Schematic Reference

Hybrid Energy Storage Schematics ()

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

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)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Special Tools

* EL-48571 High Voltage Battery Pin Out Box

* EL-48900 HEV Safety Kit

Circuit/System Verification

Ignition ON, observe the scan tool Hybrid Battery 1-20 parameters. Each reading should be between 10-19 V and all readings should be within 1.5

V of each other.

Circuit/System Testing

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.

Before working on any high voltage system, be sure to wear the following Personal Protection Equipment:

* Safety glasses with appropriate side shields when within 50 feet of the vehicle, either indoors or outdoors.

* Certified and up-to-date Class "0" Insulation gloves rated at 1000V with leather protectors.

- Visually and functionally inspect the gloves before use.

- Wear the Insulation gloves at all times when working with the high voltage battery assembly, whether the system is energized or

not.

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.