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 |
|---|---|---|---|---|
Trunk Key Switch Signal | 1, 2 | 1, 2 | 1, 2 | -- |
Trunk Release Relay Control | 1, 2 | 1, 2 | B3265 | -- |
Trunk Release Switch Signal - Exterior | B3618 | 1, 2 | 1, 2 | -- |
Trunk Release Switch Signal - Interior | 1, 2 | 1, 2 | 1, 2 | -- |
Rear Compartment Lid Pull Down Actuator B+ | 1 | 1 | 1 | -- |
Rear Compartment Lid Latch Assembly B+ | 2 | 2 | 2 | -- |
Rear Compartment Lid Key Switch Ground | 2 | 2 | 2 | -- |
Rear Compartment Lid Latch Assembly Ground | 2 | 2 | 2 | -- |
Rear Compartment Lid Pull Down Actuator Ground | 1 | 1 | 1 | -- |
Rear Compartment Lid Release Switch Exterior Ground | 1, 2 | 1, 2 | 1, 2 | -- |
Rear Compartment Lid Release Switch Interior Ground | 1, 2 | 1, 2 | 1, 2 | -- |
1. Trunk Release Inoperative - Coupe 2. Trunk Release Inoperative - Convertible | ||||
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. For more detailed information concerning trunk release operation refer to Luggage Compartment Description and Operation .
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) will set DTC B3618 when the exterior trunk release switch circuit is shorted to ground for more than 3 minutes.
Actions Taken When the DTC Sets
Stores DTC B3618 in RCDLR memory.
Conditions for Clearing the DTC
| • | The condition responsible for setting the DTC no longer exists. |
| • | You issue a scan tool CLEAR DTCs command. |
| • | A history DTC will clear after 50 malfunction-free ignition cycles. |
Reference Information
Schematic Reference
Connector End View Reference
Vehicle Access Connector End Views
Electrical Information Reference
Scan Tool Reference
Circuit/System Testing
- Ignition OFF, disconnect the exterior rear compartment lid release switch harness connector at the exterior rear compartment lid release switch.
- Test for less than 1.0 ohm of resistance between the ground circuit terminal A and ground.
- Ignition ON, verify the scan tool Exterior Rear Compartment Lid Release Switch parameter is Inactive.
- If all circuits test normal, test or replace the exterior rear compartment lid release switch.
| ⇒ | If greater than the specified range, test the ground circuit for an open/high resistance. |
| ⇒ | If not the specified value, test the signal circuit terminal B for a short to ground. If the circuit tests normal, replace the RCDLR. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for RCDLR replacement, setup, and programming |
