Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptor
DTC B3618 02 : Exterior Trunk Release Switch Circuit Short to GroundDiagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Trunk Release Relay B+ | 2 | 2 | -- | -- |
Exterior Rear Compartment Lid Switch Signal | B3618 02 | 1 | 1 | -- |
Trunk Release Switch Signal | 1 | 1 | 1 | -- |
Rear Compartment Lid Latch Control | 2 | 2 | 2 | -- |
Trunk Release Relay Control | B3265 00 | B3265 00 | B3265 00 | -- |
Trunk Release Switch Low Reference | -- | 1 | 1 | -- |
Exterior Rear Compartment Lid Switch Ground | -- | 1 | 1 | -- |
Rear Compartment Lid Latch Ground | -- | 2 | 2 | -- |
Trunk Release Relay Ground | -- | 2 | 2 | -- |
1. Rear Compartment Lid Release Switch Malfunction 2. Rear Compartment Lid Release Malfunction | ||||
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
Connector End View Reference
Description and Operation
Luggage Compartment Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
Command the trunk release by using the exterior rear compartment lid release switch. The rear compartment lid release actuator should release the trunk lid.
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the exterior rear compartment lid release switch.
- Test for less than 1 ohm between the ground circuit terminal C and ground.
- Connect the harness connector at the exterior rear compartment lid release switch and disconnect the X1 harness connector at the RCDLR.
- Connect a test lamp between the signal circuit terminal P and B+.
- Ignition ON, command the trunk release ON and OFF by pressing and releasing the exterior rear compartment lid release switch. The test lamp should turn ON and OFF when changing between the commanded states.
- If all circuits test normal, replace the RCDLR.
| ⇒ | If greater than the specified range, test the ground circuit for an open/high resistance. |
| ⇒ | If the test lamp continuously illuminates, test the signal circuit for a short to ground or and open/high resistance. If the circuit tests normal, replace the exterior rear compartment lid release switch. |
| ⇒ | If the test lamp does not illuminate, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the exterior rear compartment lid release switch. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for RCDLR replacement, setup, and programming
