B3618

DTC B3618

DTC Descriptor
DTC B3618
- Exterior Trunk Release Switch Circuit

Diagnostic Fault Information

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview






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 (Convertable and Z06) Luggage Compartment Description and Operation (Coupe).

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.

Circuit/System Testing

1. Ignition OFF, disconnect the exterior rear compartment lid release switch harness connector at the exterior rear compartment lid release switch.
2. Test for less than 1.0 ohm of resistance between the ground circuit terminal A and ground.

• If greater than the specified range, test the ground circuit for an open/high resistance.

3. Ignition ON, verify the scan tool exterior rear compartment lid release switch parameter is Inactive.

• If not the specified value, test the signal circuit terminal B for a short to ground. If the circuit tests normal, replace the RCDLR.

4. If all circuits test normal, test or replace the exterior rear compartment lid release switch.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests

* Rear Compartment Lid Lock Cylinder Replacement .
* Refer to Programming and Relearning. Programming and Relearning