B18E4

B18E4-POWER LIFTGATE FRONT ZONE SWITCH CIRCUIT HIGH







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

- Set Condition:
When the Power Liftgate Module senses a voltage over 5.01 volts on the (G25) Liftgate Switch Sense circuit for longer than 10 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 from the switch bank.
5. With the scan tool, read the DTCs.

Does the scan tool display B18E4-POWER LIFTGATE FRONT ZONE SWITCH CIRCUIT HIGH?

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 RELEASE SWITCH SHORTED




1. Disconnect the Switch Bank 2 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 B18E4-POWER LIFTGATE FRONT ZONE SWITCH CIRCUIT HIGH?

Yes

- Go To 3

No

- Replace the Switch Bank assembly.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

3. (G25) LIFTGATE SWITCH SENSE CIRCUIT SHORT TO VOLTAGE




1. Disconnect the Power Liftgate Module C2 harness connector.
2. Measure the voltage between ground and the (Q25) Liftgate Switch Sense circuit.

Is there any voltage present?

No

- Go To 4

Yes

- Repair the (G25) Liftgate Switch Sense circuit for a short to voltage.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

4. (G25) LIFTGATE SWITCH SENSE CIRCUIT OPEN




1. Turn the ignition off.
2. Measure the resistance of the (G25) Liftgate Switch Sense circuit between the Switch connector and the Power Liftgate C2 harness connector.

Is the resistance below 2.0 Ohms?

No

- Repair the (G25) Liftgate Switch Sense circuit for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

Yes

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