Diagnostic Test
- DTC PRESENT
- With the scan tool, record DTCs.
- Erase DTCs.
- Turn the ignition off, wait 10 seconds, then turn the ignition on.
- Operate the liftgate several times from the overhead switch.
- With the scan tool, read DTCs.
Does the scan tool display B18E5-POWER LIFTGATE FRONT ZONE SWITCH STUCK?
Yes
- Go to step 2
No
- Using the SYSTEM WIRING DIAGRAMS as a guide, inspect the wiring and connectors for an intermittent condition.
- Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
- LIFTGATE RELEASE SWITCH STUCK
- Disconnect the Overhead Liftgate Release Switch harness connector.
- Erase DTCs.
- Turn the ignition off, wait 10 seconds, then turn the ignition on.
- With the scan tool, read DTC's.
Does the scan tool display B18E5-POWER LIFTGATE FRONT ZONE SWITCH STUCK?
Yes
- Go to step 3
No
- Replace the Overhead Liftgate Switch assembly in accordance with the Service Information.
- Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
- (G25) LIFTGATE SWITCH SENSE CIRCUIT SHORT TO GROUND
- Disconnect the Power Liftgate Module C2 harness connector.
- Measure the resistance between ground and the (G25) Liftgate Switch Sense circuit.
Is the resistance below 7, 000 ohms?
Yes
- Repair the (G25) Liftgate Switch Sense circuit for a partial short to ground.
- Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
No
- Replace the Power Liftgate Module in accordance with the Service Information.
- Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .