2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1134

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1134

* The drive motor generator battery control module detects less than 20 A on the high range sensor and the difference between the high range

current measurement and the medium range current measurement is greater than 20 A for 3 seconds.

* The drive motor generator battery control module detects less than 20 A on the high range sensor and the difference between the high range

current measurement and the low range current measurement is greater than 4 A for 3 seconds.

P0AC1

The drive motor generator battery control module detects that the current sensor high range is greater than +200 A and the current sensor medium

range is greater than +52 A and the current sensor low range is greater than +22 A for 3 seconds.

P0AC2

The drive motor generator battery control module detects that the current sensor high range is less than -200 A and the current sensor medium range

is less than -52 A and the current sensor low range is greater than -22 A for 3 seconds.

P1A07

The drive motor generator battery control module detects less than 4.8 V or greater than 5.2 V on the 5 V reference circuit.

Action Taken When the DTC Sets

* DTC P0AC0, P0AC1, P0AC2, and P1A07 are type A DTCs.

* The driver information center (DIC) displays the SERVICE HYBRID SYSTEM message.

* State of charge goes to invalid.

* The drive motor generator battery control module sends a message to the hybrid powertrain control module requesting that the hybrid battery

power limit be set to 3 kilowatts, resulting in minimal hybrid function.

Conditions for Clearing the DTC

DTC P0AC0, P0AC1, P0AC2, and P1A07 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)

Scan Tool Reference

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

DTC Type Reference

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

(DTC) Type Definitions)

Special Tools

EL-48900 HEV Safety Kit

Circuit/System Verification

Ignition ON, observe the scan tool Calc. Hybrid Batt. Current parameter. The reading should be between -200 and +200 A, and change with the

amount of current draw on the drive motor generator battery.

Circuit/System Testing