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: Exterior Trunk Release Switch CircuitDiagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Rear Compartment Lid Release Close Switch B+ | 1 | 1 | B3641 | -- |
Rear Compartment Lid Pull Down Actuator B+ | 1 | 1 | 1 | -- |
Trunk Release Switch B+ | 1 | 1 | 1 | -- |
Trunk Key Switch Signal | 1 | 1 | 1 | -- |
Trunk Release Control Signal | 1 | 1 | B3265 | -- |
Exterior Trunk Release Switch Signal | B3618 | 1 | 1 | -- |
Interior Trunk Release Switch Signal | 1 | 1 | 1 | -- |
Rear Compartment Lid Pull Down Actuator Signal | B1297 | B1297 | B1297 | -- |
Rear Compartment Lid Pull Down Actuator Ground | 1 | 1 | 1 | -- |
Rear Compartment Lid Release Switch Exterior Ground | 1 | 1 | 1 | -- |
Rear Compartment Lid Release Switch Interior Ground | 1 | 1 | 1 | -- |
Rear Compartment Lid Release Close Switch Ground | 1 | 1 | 1 | -- |
1. Trunk Release Inoperative | ||||
Circuit/System Description
The exterior trunk release switch is located just under the lip of the deck lid in the license plate pocket area. As a vehicle with locked doors is approached with a key fob and the exterior trunk release switch is pressed, the keyless entry antenna transmitter broadcasts a challenge approximately in a 1-meter range to the key fob. If the response from the key fob via radio frequency (RF) is a valid response, the locked door will be passively unlocked/unlatched allowing the trunk to be opened.
Conditions for Running the DTC
Battery voltage must be between 9-16 volts.
Conditions for Setting the DTC
The remote control door lock receiver (RCDLR) detects a short to ground in the exterior trunk release switch circuit for greater than 3 minutes.
Actions Taken When the DTC Sets
The exterior trunk release switch will be inoperative.
Conditions for Clearing the DTC
| • | The condition responsible for setting the DTC no longer exists. |
| • | A history DTC will clear after 50 malfunction-free ignition cycles. |
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
Ignition ON, observe the scan tool Ext. Rear Compartment Lid Release Sw. parameter while pressing and releasing the exterior rear compartment lid release switch. The parameter should change between Active and Inactive.
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the exterior rear compartment lid release switch.
- Ignition ON, verify the scan tool Ext. Rear Compartment Lid Release Sw. parameter is Inactive.
- Install a 3A fused jumper wire between the signal circuit terminal A and ground. Verify the scan tool Ext. Rear Compartment Lid Release Sw. parameter is Active.
- If all circuits test normal, test or replace the exterior rear compartment lid release switch.
| ⇒ | If not the specified value, test the signal circuit terminal A for a short to ground. If the circuit tests normal, replace the RCDLR. |
| ⇒ | If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the RCDLR. |
Component Testing
- Ignition OFF, disconnect the harness connector at the exterior rear compartment lid release switch.
- Test for infinite resistance between the signal terminal A and the ground terminal C with the switch in the open position.
- Test for less than 2 ohms between the signal terminal A and the ground terminal C with the switch in the closed position.
| ⇒ | If not the specified value, replace the exterior rear compartment lid release switch. |
| ⇒ | If greater than the specified range, 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 |
