B188F

B188F-POWER LIFTGATE CONTROL CIRCUIT 1 OPEN





For a complete wiring diagram Consult Diagrams/Electrical

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

- Set Condition:
When the Power Liftgate Module senses no current on the (Q88) Liftgate Open Driver circuit and no liftgate movement, this code will set. It is also possible for this code to set if the liftgate has been run several times and the internal circuit breaker (Thermo Protection Device) in the power liftgate drive unit has opened up.





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.
If possible, operate the liftgate several times.
With the scan tool, read DTCs.
Does the scan tool display B188F-POWER LIFTGATE CONTROL CIRCUIT 1 OPEN?

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. POWER LIFTGATE MODULE




Turn the ignition off.
Disconnect the Power Liftgate Module C1 connector.
Measure the resistance between the (Q88) Liftgate Open Driver circuit and the (Q89) Liftgate Close Driver circuit
Is the resistance approximately 4.3 ohms?

No

- Go To 3

Yes

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

3. (Q88) LIFTGATE OPEN DRIVER CIRCUIT OPEN




Disconnect the Power Liftgate Drive Unit connector.
Measure the resistance of the (Q88) Liftgate Open Driver circuit between the PLG C1 connector and the PLG Drive Unit connector.
Is the resistance below 5.0 ohms?

No

- Repair the (Q88) Liftgate Open Driver circuit for an open.
- PERFORM BODY VERIFICATION TEST - VER 1. Body Verification Test

Yes

- Go To 4


4. (Q89) LIFTGATE CLOSE DRIVER CIRCUIT OPEN




Measure the resistance of the (Q89) Liftgate Close Driver circuit between the PLG C1 connector and the PLG Drive Unit connector.
Is the resistance below 5.0 ohms?

No

- Repair the (Q89) Liftgate Close Driver circuit for an open.
- PERFORM BODY VERIFICATION TEST - VER 1. Body Verification Test

Yes

- Replace the Power Liftgate Drive Unit.
- PERFORM BODY VERIFICATION TEST - VER 1. Body Verification Test