2010 Cadillac CTS Sedan AWD V6-3.6L Page 596

2010 Cadillac CTS Sedan AWD V6-3.6L Page 596

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

B3618

DTC B3618

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 B3618 02

- Exterior Trunk Release Switch Circuit Short to Ground

Diagnostic Fault Information

Circuit/System Description

The exterior rear compartment lid release switch sends a signal from the remote control door lock receiver (RCDLR). When the exterior rear

compartment lid release switch is activated, the signal circuit is pulled to ground. The RCDLR interprets this and sends a serial data message to the

body control module (BCM) requesting the rear compartment lid be released.

Conditions for Running the DTC

Battery voltage is between 9-16 volts.

Conditions for Setting the DTC

The RCDLR detects a short to ground on the exterior trunk release switch signal circuit.

Action Taken When the DTC Sets

The trunk will not release from the exterior rear compartment lid release switch.

Conditions for Clearing the DTC

* The condition responsible for setting the DTC no longer exists.

* A history DTC will clear once 40 consecutive malfunction free ignition cycles have occurred.

Reference Information

Schematic Reference

Release Systems Schematics (See: Body and Frame/Locks/Diagrams/Electrical Diagrams/Release Systems Schematics)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)