B25AE

B25AE-LIFTGATE UNLOCK CONTROL CIRCUIT HIGH





For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
With the ignition on.

Liftgate Unlock Relay active.

- Set Condition:
When the Totally Integrated Power Module (TIPM) detects the Liftgate Unlock Relay Control circuit is shorted to voltage.





1. INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, clear all DTCs.
3. Turn the ignition off.
4. Remove the FOBIK from the vehicle.
5. Lock the doors.
6. With the FOBIK present, apply and release the Passive Entry Liftgate Lock and Unlock switch located on the Liftgate.
7. Turn the ignition on.
8. With the scan tool, read DTCs.

Does the scan tool display DTC: B25AE-LIFTGATE UNLOCK CONTROL CIRCUIT HIGH?

Yes

- Go To 2

No

- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. CHECK THE LIFTGATE UNLOCK RELAY
1. Turn the ignition off.
2. Remove the Liftgate Unlock Relay and substitute it with a known good relay.
3. Turn the ignition on.
4. With the scan tool, clear all DTCs.
5. Turn the ignition off.
6. Remove the FOBIK from the vehicle.
7. Lock the doors.
8. With the FOBIK present, apply and release the Passive Entry Liftgate Lock and Unlock switch located on the Liftgate.
9. Turn the ignition on.
10. With the scan tool, read DTCs.

Does the scan tool display DTC: B25AE-LIFTGATE UNLOCK CONTROL CIRCUIT HIGH?

Yes

- Go To 3

No

- Replace the Liftgate Unlock Relay.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

3. CHECK THE (L177) LIFTGATE UNLOCK RELAY CONTROL CIRCUIT FOR A SHORT TO VOLTAGE




1. Turn the ignition off.
2. Remove the Liftgate Unlock Relay.
3. Disconnect the TIPM C1 harness connector.
4. Turn the ignition on.
5. Measure the voltage between ground and the (L177) Liftgate Unlock Relay Control circuit at the TIPM C1 harness connector.

Is there any voltage present?

Yes

- Repair the short to voltage in the (L177) Liftgate Unlock Relay Control circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Replace the TIPM. Totally Integrated Power Module (TIPM) - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.