B188F-POWER LIFTGATE CONTROL CIRCUIT 1 OPEN
For a complete wiring diagram Refer to Section 8W
- When Monitored:
Whenever the Power Liftgate Module is performing a power opening operation.
- 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 drive unit has opened up.
| Possible Causes |
| (Q88) LIFTGATE OPEN DRIVER CIRCUIT OPEN |
| (Q89) LIFTGATE CLOSE DRIVER CIRCUIT OPEN |
| POWER LIFTGATE DRIVE UNIT |
| POWER LIFTGATE MODULE |
Diagnostic Test
1. DTC PRESENTWith the scan tool, record DTCs
Erase DTCs.
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. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
2. POWER LIFTGATE MODULE
Turn the ignition off.
Disconnect the Power Liftgate Module C1 harness 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 in accordance with the service information.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
3. (Q88) LIFTGATE OPEN DRIVER CIRCUIT OPEN
Disconnect the Power Liftgate Drive Unit harness connector.
Measure the resistance of the (Q88) Liftgate Open Driver circuit between the Power Liftgate Module C1 harness connector and the Power Liftgate 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. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
Yes
- Go To 4
4. (Q89) LIFTGATE CLOSE DRIVER CIRCUIT OPEN
Measure the resistance of the (Q89) Liftgate Close Driver circuit between the Power Liftgate Module C1 harness connector and the Power Liftgate Drive Unit harness 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. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
Yes
- Replace the Power Liftgate Drive Unit in accordance with the service information.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).