2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 481

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 481

Conditions for Setting the DTC

B1453 01

Run and Crank/On and Start Power Circuit is more than 2.5 volts.

B1453 06

Run and Crank/On and Start Power Circuit is less than 2.5 volts.

Action Taken When the DTC Sets

DTC B1453 is a Type C DTC.

Conditions for Clearing the DTC

DTC B1453 is a Type C DTC.

B1453 01

Run and Crank/On and Start Power Circuit is less than 2.5 volts.

B1453 06

Run and Crank/On and Start Power Circuit is more than 2.5 volts.

Diagnostic Aids

Many controllers such as the power inverter module (PIM), transmission control module (TCM), and inflatable restraint sensing and diagnostic

module (SDM) will set a DTC for a problem with the Run and Crank/On and Start Power Voltage circuit. Confirm that they do not have DTCs

before only investigating the SDGM.

Reference Information

Schematic Reference

Hybrid Controls Schematics ()

Connector End View Reference

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

Description and Operation

Drive Motor Generator Control Module 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)

* 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

Circuit/System Testing

1. Ignition OFF, disconnect the SDGM harness connector X2 at the SDGM, verify that a test lamp does not illuminate between the ignition

circuit terminal 20 and ground.

瀚慖f the test lamp illuminates, test the signal circuit terminal 20 for a short to voltage.

2. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 20 and ground.

瀚慖f the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.

3. If all circuits test normal, replace the SDGM.