B1982-POWER LIFTGATE LATCH CONTROL 1 CIRCUIT OPEN
For a complete wiring diagram Refer to Section 8W
- When Monitored:
Anytime the Power Liftgate is performing a power cinching or releasing operation.
- Set Condition:
When the power liftgate latch module detects an open circuit between the latch motor outputs.
| Possible Causes |
| POWER LIFTGATE LATCH |
| (Q84) LIFTGATE LATCH CINCH DRIVER CIRCUIT OPEN |
| (Q85) LIFTGATE LATCH RELEASE DRIVER CIRCUIT OPEN |
| POWER LIFTGATE MODULE |
Diagnostic Test
1. DTC PRESENTWith the scan tool, record and erase DTCs.
Turn the ignition off, wait 10 seconds, then turn the ignition on.
Operate the power liftgate several times if possible.
With the scan tool, read DTCs.
Does the scan tool display B1982–POWER LIFTGATE LATCH CONTROL 1 CIRCUIT OPEN?
Yes
- Go To2
No
- Using the wiring diagram/schematic as a guide, inspect the wiring and connectors for an intermittent condition. Operate the liftgate several times and check for any binding conditions in the latch assembly.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
2. LIFTGATE LATCH CIRCUIT OPEN
Turn the ignition off.
Disconnect the Power Liftgate Module C2 harness connector.
Measure the resistance between the (Q84) Liftgate Latch Cinch Driver circuit and the (Q85) Liftgate Latch Release Driver Circuit.
Is the resistance approximately 4.0 ohms?
No
- Go to 3.
Yes
- 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).
3. (Q84) LIFTGATE LATCH CINCH DRIVER CIRCUIT OPEN
Disconnect the Power Liftgate Latch harness connector.
Measure the resistance of the (Q84) Liftgate Latch Cinch Driver circuit between the Power Liftgate Module C2 harness connector and the Power Liftgate Latch harness connector.
Is the resistance below 5.0 ohms?
Yes
- Go to 4.
No
- Repair the (Q84) Liftgate Latch Cinch Driver circuit for an open.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
4. (Q85) LIFTGATE LATCH RELEASE DRIVER CIRCUIT OPEN
Measure the resistance of the (Q85) Liftgate Latch Release Driver circuit between the Power Liftgate Module C2 harness connector and the Power Liftgate Latch harness connector.
Is the resistance below 5.0 ohms?
Yes
- Replace the Liftgate Latch assembly in accordance with the service information.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
No
- Repair the (Q85) Liftgate Latch Release Driver circuit for an open.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).