Circuit/System Testing

WARNING: This page is about a different car, the 2007 Saturn Ion Red Line, 2007 Saturn Ion 3, and 2007 Saturn Ion 2. However, it is still accessible from the selected car via links, so may be relevant.

Rear Compartment Lid Release Switch Malfunction

Ignition OFF, disconnect the harness connector at the Rear Compartment Lid Release Switch.
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.
If all circuits test normal, test or replace the Rear Compartment Lid Release Switch

Rear Compartment Lid Release Malfunction

Ignition OFF, disconnect the harness connector 4 at the Rear Compartment Lid Latch.
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.
Connect a test lamp between the control circuit terminal 4 and ground.
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 and the circuit fuse is good, test the control circuit for an open/high resistance. If the circuit tests normal, test or replace the BCM.
- If the test lamp is always OFF and the circuit fuse is open, test the control circuit for a short to ground. If the circuit tests normal, test or replace the Rear Compartment Lid Latch.
If all circuits test normal, test or replace the Rear Compartment Lid Latch.