The rear compartment release circuit operates as follows; battery positive voltage is supplied to the rear compartment lid lock release actuator causing the actuator to energize releasing the rear compartment lid. The rear compartment may be released with the dash mounted rear compartment release switch or with the keyless entry fob. The ignition must be in the OFF or ACCESSORY positions for the rear compartment to be released with a keyless entry transmitter fob (RFA).

Schematic Reference

Release Systems Schematics

Connector End View Reference

Vehicle Access Connector End Views

Description and Operation

Luggage Compartment Description and Operation

Electrical Information Reference

Scan Tool Reference

1. Ignition ON, command the trunk release by pressing the rear compartment lid release switch. The rear compartment lid latch should release the trunk lid.

⇒	If the trunk latch does not does not release, refer to Rear Compartment Lid Switch Malfunction Malfunction.

2. Command the trunk release with a scan tool. The rear compartment lid release actuator should release the trunk lid.

⇒	If the trunk latch does not does not release, refer to Rear Compartment Lid Malfunction.

Rear Compartment Lid Release Switch Malfunction

1. Ignition OFF, disconnect the harness connector at the rear compartment lid release switch.
2. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal D and ground.

⇒	If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal and the B+ circuit fuse is open, test the circuit terminal D for a short to ground.

3. Ignition OFF, connect the harness connector at the rear compartment lid release switch and disconnect the harness connector at the rear compartment lid release latch.
4. Connect a test lamp between the control circuit terminal 4 and ground.
5. Command the rear compartment lid latch to activate by pressing the rear compartment lid release switch. The test lamp should illuminate while pressing the rear compartment lid release switch.

⇒	If the test lamp is always ON, test the control circuit for a short to voltage.

⇒	If the test lamp is always OFF and the B+ circuit fuse is good, test the control circuit for an open/high resistance.

⇒	If the test lamp is always OFF and the B+ circuit fuse is open, test the control circuit for a short to ground.

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

Rear Compartment Lid Release Malfunction

1. Ignition OFF, disconnect the harness connector at the rear compartment lid latch.
2. Test for less than 1.0 ohm of resistance between the rear compartment lid latch ground circuit terminal 3 and ground.

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

3. Connect a test lamp between the trunk release motor control circuit terminal 4 and ground.
4. Command the trunk release ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.

⇒	If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the BCM.

⇒	If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the BCM.

5. If all circuits test normal, test or replace the rear compartment lid latch.

Rear Compartment Lid Latch

1. Ignition OFF, disconnect the harness connector at the rear compartment lid latch.
2. Install a 15-amp fused jumper wire between the control circuit terminal 4 and 12 volts. Install a jumper wire between the ground circuit terminal 3 and ground. Verify the rear compartment lid latch activates.

⇒	If the latch does not perform as specified, replace the rear compartment lid latch.

Rear Compartment Lid Release Switch

1. Ignition OFF, disconnect the harness connector at the rear compartment lid release switch.
2. Test for infinite resistance between the signal terminal D and the ground circuit terminal A with the switch in the open position.

⇒	If not the specified value, replace the rear compartment lid release switch.

3. Test for less than 2.0 ohms between the signal terminal D and the ground circuit terminal A with the switch in the closed position.

⇒	If greater than the specified range, replace the rear compartment lid release switch.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.