B1892-POWER LIFTGATE CONTROL CIRCUIT 2 HIGH
For a complete wiring diagram Refer to Section 8W
- When Monitored:
Whenever the Power Liftgate Module is performing a power opening or closing operation.
- Set Condition:
When the Power Liftgate Module senses voltage above 9.5 volts on the (Q89) Liftgate Close Driver circuit prior to starting a power open or close cycle, this code will set.
| Possible Causes |
| (Q89) LIFTGATE CLOSE DRIVER CIRCUIT SHORT TO VOLTAGE |
| (Q88) LIFTGATE OPEN DRIVER CIRCUIT SHORT TO VOLTAGE |
| (Q88) LIFTGATE OPEN DRIVER CIRCUIT SHORT TO (Q89) LIFTGATE CLOSE DRIVER CIRCUIT |
| 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 B1892–POWER LIFTGATE CONTROL CIRCUIT 2 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. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
2. (Q89) LIFTGATE CLOSE DRIVER CIRCUIT SHORT TO VOLTAGE
Disconnect the Power Liftgate Module C1 harness connector.
Disconnect the Power Liftgate Drive Unit harness connector.
Measure the voltage between the (Q89) Liftgate Close Driver circuit and ground.
Is there any voltage present?
Yes
- Repair the (Q89) Liftgate Close Driver circuit for a short to voltage.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
No
- Go To 3
3. (Q88) LIFTGATE OPEN DRIVER CIRCUIT SHORT TO VOLTAGE
Measure the voltage between the (Q88) Liftgate Open Driver circuit and ground.
Is there any voltage present?
Yes
- Repair the (Q88) Liftgate Open Driver circuit for a short to voltage.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
No
- Go To 4
4. (Q88) LIFTGATE OPEN DRIVER CIRCUIT SHORT TO (Q89) LIFTGATE CLOSE DRIVER CIRCUIT
Turn the ignition off.
Measure the resistance between the (Q88) Liftgate Open Driver circuit and the (Q89) Liftgate Close Driver circuit.
Is the resistance below 10000.0 ohms?
No
- Replace the Power Liftgate Module in accordance with service information.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
Yes
- Repair the (Q88) Liftgate Open Driver circuit for a short to the (Q89) Liftgate Close Driver circuit. If the (Q88) Liftgate Open Driver circuit and the (Q89) Liftgate Close Driver circuit are OK, 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).