2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 444

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 444

Circuit/System Description

The theft deterrent module (TDM) monitors the 12V battery positive (B+) voltage available to it. If the voltage at the TDM is between 6-9 volts,

and the voltage being reported by a serial data message is greater than 9 volts, then DTC B1424 00 sets.

Conditions for Running the DTC

* The ignition switch is in Accessory or Run.

* This diagnostic runs every 100 milliseconds.

Conditions for Setting the DTC

* Voltage at the TDM 12V B+ circuit is between 6-9 volts.

* Reported 12V battery voltage received via serial data is valid and is greater than 9 volts.

* The above conditions have been met for 2 seconds.

Action Taken When the DTC Sets

* The security indicator turns ON.

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

Conditions for Clearing the DTC

* A current DTC clears when the 12V B+ at the TDM is greater than 9 volts, or if the voltage reported by serial data is less than 9 volts.

* A history DTC clears after 100 consecutive ignition cycles, if no failures are reported by this diagnostic.

Diagnostic Aids

* A low voltage DTC in multiple modules indicates a concern in the 12V charging system.

* Verify that the ground terminal G201 is clean and tight.

Reference Information

Schematic Reference

* Immobilizer Schematics (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Diagrams/Electrical

Diagrams/Immobilizer Schematics)

* Starting and Charging Schematics (See: Starting and Charging/Diagrams/Electrical Diagrams)

* Power Distribution Schematics (See: Diagrams/Electrical Diagrams/Starting and Charging/Power and Ground Distribution/System

Diagram/Power Distribution Schematics)

* Ground Distribution Schematics (See: Diagrams/Electrical Diagrams/Starting and Charging/Power and Ground Distribution/System

Diagram/Ground Distribution Schematics)

Connector End View Reference

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

Description and Operation

* Immobilizer Description and Operation (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Description and

Operation/Immobilizer Description and Operation)

* Charging System Description and Operation (See: Starting and Charging/Charging System/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. Engine running, accessories OFF, measure and record the battery voltage at the 12V battery terminals. The voltage should be between 12.6