B1967-POWER LIFTGATE OPEN DIRECTION OVERCURRENT
For a complete wiring diagram Refer to Section 8W
- When Monitored:
Anytime the Power Liftgate is in a power open operation.
- Set Condition:
The drive motor stall current of over 24 amps has been detected for over 500 ms. during the power opening operation.
| Possible Causes |
| BINDING LIFTGATE OR OVERLOADING |
| (Z800) GROUND CIRCUIT OPEN |
| (Q84) LIFTGATE LATCH CINCH DRIVER CIRCUIT SHORT TO (Q901) LOGIC GROUND |
| (Q88) LIFTGATE OPEN DRIVER CIRCUIT SHORT TO GROUND |
| (Q201) LIFTGATE CLUTCH DRIVER CIRCUIT SHORT TO GROUND |
| POWER LIFTGATE MODULE |
| POWER LIFTGATE DRIVE UNIT |
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 B1967–POWER LIFTGATE OPEN DIRECTION OVERCURRENT?
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.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
2. BINDING LIFTGATE
Examine the liftgate for proper alignment, worn or binding hinges, weak liftgate prop assembly, or loose/hard weatherstrip for wear or anything that would cause an obstruction to proper operation. Check for the possibility of the liftgate having been overloaded due to ice or heavy snow.
If necessary manually operate the liftgate of a known good vehicle and notice the effort needed.
Compare the effort needed on the disabled vehicle.
Were there any mechanical problems found?
Yes
- Refer to Service information for the related symptom(s).
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
No
- Go To3
3. POWER LIFTGATE DRIVE UNIT
Reconnect all Power Liftgate Module, Power Liftgate Latch, and Power Liftgate Drive Unit harness connectors.
Operate the Power Liftgate in both directions if possible.
Does the motor start to lift the liftgate but is very slow and labors extensively?
Yes
- Replace the Power Liftgate Drive Unit assembly in accordance with the service information.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
No
- 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).