B18DE

B18DE-POWER LIFTGATE HANDLE SWITCH CIRCUIT LOW





For a complete wiring diagram, refer to the Wiring Information

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

- Set Condition:
When the Power Liftgate Module senses a voltage of less than 2.0 volts on the Liftgate Handle Switch Sense circuit for longer than 20 seconds this code will set.





1. DTC PRESENT
1. With the scan tool, record DTCs.
2. Erase 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 DTCs.

Does the scan tool display B18DE-POWER LIFTGATE HANDLE SWITCH CIRCUIT LOW

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 DTCs.
3. Turn the ignition off, wait 10 seconds, then turn the ignition on.
4. With the scan tool, read DTCs.

Does the scan tool display B18DE-POWER LIFTGATE HANDLE SWITCH CIRCUIT LOW?

Yes

- Go To 3

No

- 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. Turn the ignition off.
2. Disconnect the Power Liftgate Module C2 harness connector.
3. Measure the resistance between ground and the (P30) Liftgate Handle Switch Sense circuit.

Is the resistance below 1,000 ohms?

Yes

- Repair the (P30) Liftgate Handle Switch Sense circuit for a 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) LOGIC GROUND




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

Is the resistance below 1,000 ohms?

Yes

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

No

- 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.