2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1107

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1107

* The 12 V battery voltage is 9-18 V.

* The high voltage contactors are closed.

Conditions for Setting the DTC

P0ABB

The drive motor generator battery control module detects a 50 V difference between the hybrid battery pack calculated voltage and the hybrid

battery terminal voltage for 7 seconds.

P0ABC

The drive motor generator battery control module detects the terminal voltage is less than 50 V for 3 seconds.

P0ABD

The drive motor generator battery control module detects the terminal voltage is greater than 430 V for 3 seconds.

Action Taken When the DTC Sets

* DTCs P0ABB, P0ABC, and P0ABD are type A DTCs.

* The battery vent fan is commanded to high speed.

Conditions for Clearing the DTC

DTCs P0ABB, P0ABC, and P0ABD are type A DTCs.

Reference Information

Schematic Reference

Hybrid Energy Storage Schematics ()

Connector End View Reference

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

Description and Operation

Drive Motor Battery System Description ()

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)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

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

1. Verify that DTCs P0A95, P0C77, and P1A20 is not set.

瀚慖f any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code

Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).

2. Verify that DTC P0ABD is not set.

瀚慖f the DTC is set, replace the drive motor generator battery assembly. If the DTC resets, replace the drive motor generator battery control