2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 603
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Clear all DTCs and operate the steering column lock control module within the conditions for running the DTC. The DTC should not set.
If the DTC sets, reprogram the K60 Steering Column Lock Control Module. If the DTC resets, replace the K60 Steering Column Lock Control
Module.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Steering Column Lock Control Module Replacement (ULS) (See: Steering and Suspension/Steering/Steering Column/Steering Column
Lock/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for steering column lock control module
replacement, setup and programming
B2955
DTC B2955
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 B2955 00
- Security Sensor Data Circuit
Diagnostic Fault Information
Circuit/System Description
When an ignition key is inserted into the ignition lock cylinder and the ignition is switched ON, the transponder embedded in the key is energized
by the exciter coils surrounding the ignition lock cylinder. The transponder transmits a signal to the body control module (BCM). The BCM then
compares this value to a value stored in memory. If the value is correct, the BCM will send the prerelease password via the serial data circuit to the
engine control module (ECM). If the learned key code does not match or a transponder value is not received, the BCM will send the start disable
password to the ECM.
Conditions for Running the DTC
Ignition is in the Accessory or Run position.
Conditions for Setting the DTC
The BCM detects a circuit fault between itself and the immobilizer control module.
Action Taken When the DTC Sets
* Vehicle starting will be disabled.
* The security indicator in the instrument cluster will be illuminated. A service message will be displayed in the driver information center.
Conditions for Clearing the DTC
* A current DTC will be cleared when the condition for setting the DTC are no longer present.
