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)
