2010 Cadillac CTS Sedan AWD V6-3.6L Page 367

2010 Cadillac CTS Sedan AWD V6-3.6L Page 367

7. If all circuits test normal, replace the BCM.

Component Testing

Ignition Switch

1. Ignition OFF, disconnect the harness connector at the ignition switch.

2. Verify the resistance between the terminals listed below match for each ignition switch position.

瀚慖f not the specified value, replace the ignition switch.

Repair Instructions

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

* Ignition and Start Switch Replacement (See: Powertrain Management/Ignition System/Sensors and Switches - Ignition System/Ignition

Switch/Service and Repair/Ignition and Start Switch Replacement)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for BCM replacement, setup, and programming

Lighting

DTC B1395

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 the diagnostic category.

DTC Descriptors

DTC B1395 03

- Device Voltage Reference Output 1 Circuit Voltage Below Threshold

DTC B1395 07

- Device Voltage Reference Output 1 Circuit Voltage Above Threshold

Diagnostic Fault Information

Circuit/System Description

The instrument panel (I/P) lamp dimmer switch is used to increase and decrease the brightness of the interior backlighting components. The I/P