B1963-POWER LIFTGATE STRUT PERFORMANCE
For a complete wiring diagram Refer to Section 8W
- When Monitored:
Up to 1 second after the Power Liftgate Module has completed a power opening.
- Set Condition:
The Power Liftgate Module has detected that the gate does not remain open (25 pulses in 1 second) after disengaging the drive unit.
| Possible Causes |
| BINDING LIFTGATE |
| (Q204) POSITION SENSOR SIGNAL 1 CIRCUIT SHORTED TO THE (Q205) POSITION SENSOR SIGNAL 2 CIRCUIT |
| WEAK OR MISSING/UNATTACHED STRUTS |
| POWER LIFTGATE DRIVE UNIT |
Diagnostic Test
1. DTC PRESENTWith the scan tool, record DTCs and any liftgate inhibitors.
Erase DTCs.
Turn the ignition off, wait 10 seconds, then turn the ignition on.
Operate the liftgate several times.
With the scan tool, read DTCs.
Does the scan tool display B1963–POWER LIFTGATE STRUT PERFORMANCE?
Yes
- Go To 2
No
- Ensure there is no intermittent binding or cold weather condition which may have caused this code to set.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
2. BINDING LIFTGATE
Operate the liftgate manually.
Does the Liftgate bind or stick while opening or closing?
No
- Go To4
Yes
- Repair the cause for the binding liftgate.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
3. CHECK (Q204) POSITION SENSOR SIGNAL 1 AND THE (Q205) POSITION SENSOR SIGNAL 2 CIRCUITS FOR A SHORT TOGETHER
Inspect the (Q204) Position sensor signal 1 circuit and the (Q205) Position Sensor Signal 2 circuits for a possible short together between the Power Liftgate Module C1 harness connector and the Power Liftgate Drive Unit harness connector.
Are the circuits shorted at either connector?
No
- Go To4
Yes
- Repair the (Q204) Position sensor signal 1 circuit for a short to the (Q205) Position Sensor Signal 2 circuit.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
4. WEAK STRUTS
Check the prop rods to ensure the liftgate will self rise from approximately 1/4 open position.
If necessary, compare the effort to open and close the liftgate with a known good vehicle.
Does the liftgate self rise as it should?
No
- Replace the Liftgate Prop Rods (struts) in accordance with service information.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
Yes
- 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).