B18E4

B18E4-POWER LIFTGATE FRONT ZONE SWITCH CIRCUIT HIGH





For a complete wiring diagram REFER to DIAGRAMS/ELECTRICAL


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

- Set Condition:
When the Power Liftgate Module senses a voltage over 5.1 volts on the (G25) Liftgate Switch Sense circuit for longer than 10 seconds, this code will set.






Diagnostic Test


1. DTC PRESENT
With the scan tool, record DTC's.
Erase DTCs.
Turn the ignition off, wait 10 seconds, then turn the ignition on.
Operate the liftgate several times from the switch bank.
With the scan tool, read 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 BODY VERIFICATION TEST - VER 1.Body Verification Test.


2. LIFTGATE RELEASE SWITCH SHORTED




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

Yes


- Go To3


No


- Replace the Switch Bank assembly.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test.


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




Disconnect the Power Liftgate Module C2 harness connector.
Measure the voltage between ground and the (Q25) Liftgate Switch Sense circuit.
Is there any voltage present?

No


- Go To4


Yes


- Repair the (G25) Liftgate Switch Sense circuit for a short to voltage.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test.


4. (G25) LIFTGATE SWITCH SENSE CIRCUIT OPEN




Turn the ignition off.
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 BODY VERIFICATION TEST - VER 1.Body Verification Test.


Yes


- Replace the Power Liftgate Module.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test.