2010 Cadillac Truck SRX FWD V6-3.0L Page 449

2010 Cadillac Truck SRX FWD V6-3.0L Page 449

* 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 B1325 03

- Device Power Circuit Voltage Below Threshold

DTC B1325 07

- Device Power Circuit Voltage Above Threshold

Diagnostic Fault Information

Circuit/System Description

The following control modules monitor the system voltage through the battery positive (B+) voltage circuits:

* Headlamp control module

* Passenger presence detection module

* Seat heating control module (front)

* Seat heating control module (rear)

* Instrument cluster

* Parking assist control module

* Keyless entry control module

* Radio

* Inflatable restraint sensing and diagnostic module

* Steering column lock control module

* Trailer interface control module

* Mobile telephone control module

* Multimedia player interface module

* Rear audio control module

* Seat memory control module

Conditions for Running the DTC

* The voltages supplied to the control modules are in the range of 7-26 V.

* The ignition is ON.

Conditions for Setting the DTC

B1325 03

The control module detects a system voltage less than 9 V for 5 seconds.

B1325 07

The control module detects a system voltage greater than 18 V for 5 seconds.

Action Taken When the DTC Sets

* The control module immediately disables all outputs when an out of range voltage condition has been detected, with the exception of serial

data, which is disabled after a 3 minute delay.

* The setting of other DTCs is inhibited.

Conditions for Clearing the DTC

The DTC passes when the malfunction is no longer present.