2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 468

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 468

* Control Module References (See: Testing and Inspection/Programming and Relearning) for rear object alarm module replacement, setup

and programming

B1424

DTC B1424

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 Descriptor

DTC B1424 00

- Device Voltage Low - Theft Deterrent Module

Diagnostic Fault Information

Circuit/System Description

The theft deterrent module (TDM) monitors the 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 is ON.

Conditions for Setting the DTC

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

* Reported 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 battery voltage 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 charging system.

Reference Information

Schematic Reference

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

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)