B1968-POWER LIFTGATE OPEN DIRECTION - EXCESSIVE TIME
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 has taken longer than 15 seconds to complete an open command.
| Possible Causes |
| BINDING LIFTGATE |
| EXCESSIVE CIRCUIT RESISTANCE ON THE (A115) POWER LIFTGATE MODULE FUSED B(+) CIRCUIT, THE Q88 LIFTGATE OPEN DRIVER CIRCUIT, OR THE Q89 LIFTGATE CLOSE DRIVER CIRCUIT |
| POWER LIFTGATE DRIVE UNIT |
| INCORRECT POWER LIFTGATE MODULE IS INSTALLED IN THE VEHICLE |
Theory of Operation
This code can also set if for some reason the liftgate was in an opening operation and it was interrupted by the engine cranking for over 20 seconds.
Diagnostic Test
1. DTC PRESENTWith the scan tool, record and erase DTC's.
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 B1968–POWER LIFTGATE OPEN DIRECTION – EXCESSIVE TIME?
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 or anything that would cause an obstruction to proper operation.
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 To 3
3. CHECK FOR EXCESSIVE CIRCUIT RESISTANCE
Disconnect all Power Liftgate Module harness connectors.
Disconnect the Power Liftgate Drive Unit harness connector.
Check all connectors and terminals for corrosion.
Do any connectors or terminals need repairing?
Yes
- Clean and repair as necessary.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
No
- 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).