B18E0

B18E0-POWER LIFTGATE HANDLE SWITCH STUCK





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

Theory of Operation

When the handle switch is inactive, the voltage from the module to the switch will be 5.0 volts. When the switch is pressed, the voltage will be approximately 2.2 volts. This can be verified by using the scan tool and monitoring the Handle Switch states or voltage and pressing and releasing the liftgate handle.

- When Monitored:
Whenever the Power Liftgate Module is awake.

- Set Condition:
When the Power Liftgate Module senses the Liftgate Handle Switch Sense circuit active (2.0V to 3.0V) for longer than 15 seconds, this code will set.





1. DTC PRESENT
1. With the scan tool, record the DTCs.
2. Erase the DTCs.
3. Turn the ignition off, wait 10 seconds, then turn the ignition on.
4. Operate the liftgate several times.
5. With the scan tool, read the DTCs.

Does the scan tool display B18E0-POWER LIFTGATE HANDLE SWITCH STUCK

Yes

- Go To 2.

No

- Using the wiring diagram/schematic as a guide, inspect the wiring and connectors for an intermittent condition.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. LIFTGATE HANDLE SWITCH SHORTED




1. Disconnect the Power Liftgate Latch harness connector.
2. Erase the DTCs.
3. Turn the ignition off, wait 10 seconds, then turn the ignition on.
4. With the scan tool, read the DTCs.

Does the scan tool display B18E0-POWER LIFTGATE HANDLE SWITCH STUCK?

Yes

- Go To 3

No

- Check the handle switch linkage for the cause of the sticking condition. If the linkage is okay, replace the Power Liftgate Latch assembly.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

3. (P30) LIFTGATE HANDLE SWITCH SENSE CIRCUIT SHORT TO GROUND




1. Disconnect the Power Liftgate Module C2 harness connector.
2. Measure the resistance between ground and the (P30) Liftgate Handle Switch Sense circuit.

Is the resistance below 10,000 Ohms?

Yes

- Repair the (P30) Liftgate Handle Switch Sense circuit for a partial short to ground.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 4

4. (P30) LIFTGATE HANDLE SWITCH SENSE CIRCUIT SHORT TO (Q901) SENSOR GROUND




1. Measure the resistance between the (Q901) Logic Ground circuit and the (P30) Liftgate Handle Switch Sense circuit.

Is the resistance below 10,000 Ohms?

Yes

- Repair the (P30) Liftgate Handle Switch Sense circuit for a short to the (Q901) Logic Ground circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Replace the Power Liftgate Module.
- Perform the BODY VERIFICATION TEST. Body Verification Test.