B18DE

B18DE-POWER LIFTGATE HANDLE SWITCH CIRCUIT LOW





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 of less than 2.0 volts on the Liftgate Handle Switch Sense circuit for longer than 20 seconds this code will set.





Diagnostic Test

1.DTC PRESENT

With the scan tool, record DTC's.

Erase DTC's

Turn the ignition off, wait 10 seconds, then turn the ignition on.

Operate the liftgate several times.

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 BODY VERIFICATION TEST - VER 1. Body Verification Test

Diagnostic Test

2.LIFTGATE HANDLE SWITCH SHORTED





Disconnect the Power Liftgate Latch connector.

Erase DTC's

Turn the ignition off, wait 10 seconds, then turn the ignition on.

With the scan tool, read DTC's.

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

Yes

- Go To 3

No

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

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





Turn the ignition off.

Disconnect the Power Liftgate Module C2 harness connector.

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

Is the resistance below 1000.0 ohms?

Yes

- Repair the (P30) Liftgate Handle Switch Sense circuit for a short to ground.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Go To 4

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





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

Is the resistance below 1000.0 ohms?

Yes

- Repair the (P30) Liftgate Handle Switch Sense circuit for a short to the (Q901) Logic Ground circuit.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

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