2010 Cadillac CTS Sedan AWD V6-3.6L Page 405

2010 Cadillac CTS Sedan AWD V6-3.6L Page 405

Repair Instructions

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

* Steering Wheel Control Switch Assembly Replacement (See: Accessories and Optional Equipment/Sensors and Switches - Accessories and

Optional Equipment/Steering Mounted Controls Assembly/Service and Repair)

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

B1534

DTC B1534 or B1535

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 B1534 02

- Left Rear Door Handle Switch Circuit

DTC B1535 02

- Right Rear Door Handle Switch Circuit

Diagnostic Fault Information

Circuit/System Description

The left and right rear door handle switch signal circuit provides inputs to the keyless entry control module when the appropriate rear exterior door

handle switch is activated. This input allows the keyless entry control module to detect a door open request. When the left or right rear door handle

is activated, the switch closes and the voltage signal from the keyless entry control module is pulled to ground, the keyless entry control module

will then send a command to the appropriate door module to unlock and unlatch the door.

Conditions for Running the DTC

The system voltage is 9-16 V.

Conditions for Setting the DTC