2010 Cadillac Truck SRX FWD V6-3.0L Page 222

2010 Cadillac Truck SRX FWD V6-3.0L Page 222

K9 BCM.

10. If all circuits test normal, test or replace the KR74 ignition run relay.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) Diagnostic Repair Verification after completing the repair.

* Relay Replacement (Attached to Wire Harness) (See: Power and Ground Distribution/Power Distribution Relay/Service and Repair/Relay

Replacement (Attached to Wire Harness))Relay Replacement (Within an Electrical Center) (See: Power and Ground Distribution/Power

Distribution Relay/Service and Repair/Relay Replacement (Within an Electrical Center))Relay Replacement

* Control Module References (See: Testing and Inspection/Programming and Relearning)Control Module References for BCM or keyless

entry control module replacement, setup, and programming

B144C

DTC B144C

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 Descriptors

DTC B144C 01

- Inverted Run/Start Power Relay Circuit Short to Battery

DTC B144C 06

- Inverted Run/Start Power Relay Circuit Low Voltage/Open

Diagnostic Fault Information

Circuit/System Description

The vehicle theft deterrent subsystem provides the capability to lock or unlock the steering column electrically. The steering column lock control

module is allowed to unlock when power mode transitions to a non off power mode and an authenticated driver identification device is present.

Once the column is unlocked, a crank request can be allowed.

Conditions for Running the DTC

* The system voltage is between 9-16 V.

* The DTC can only run when the steering column lock control module is awake.

Conditions for Setting the DTC

B144C 01

The steering column lock control module detects a short to voltage when the power mode is in the RUN or CRANK for greater than 5 seconds.

B144C 06

The steering column lock control module detects a short to ground or an open in the Off/Accessory circuit when the power mode is in the

OFF/ACC for greater than 3 seconds.

Action Taken When the DTC Sets

* The steering column lock control module will command the driver information center to display the service column lock warning message.

* The steering column lock control module indicator is ON.