B1986–POWER LIFTGATE LATCH CONTROL 2 CIRCUIT OPEN
For a complete wiring diagram Refer to Section 8W
- When Monitored:
Anytime the Power Liftgate is in a latch power cinching or releasing operation.
- Set Condition:
When the Power Liftgate 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 PRESENTDoes the scan tool display B1986–POWER LIFTGATE LATCH CONTROL 2 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.CHECK THE LIFTGATE LATCH CIRCUIT FOR AN OPEN
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.CHECK THE (Q84) LIFTGATE LATCH CINCH DRIVER CIRCUIT FOR AN OPEN
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.CHECK THE (Q85) LIFTGATE LATCH RELEASE DRIVER CIRCUIT FOR AN OPEN
Is the resistance below 5.0 ohms?
Yes
- Replace the Power 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).