B1963

B1963-POWER LIFTGATE STRUT PERFORMANCE

For a complete wiring diagram, refer to the Wiring Information Electrical Diagrams.

- When Monitored:
Up to one second after the Power Liftgate Module has completed a power opening cycle.

- Set Condition:
The power liftgate module has detected that the liftgate is falling (25 liftgate drive unit position sensor pulses in one second) after disengaging the power liftgate drive unit.





1. DTC PRESENT
1. With the scan tool, record the DTCs and any liftgate inhibitors.
2. Erase the DTCs.
3. Turn the ignition off, wait 10 seconds, then turn the ignition on.
4. Operate the liftgate several times.
5. With the scan tool, read the DTCs.

Does the scan tool display B1963-POWER LIFTGATE STRUT PERFORMANCE?

Yes

- Go To 2

No

- Make sure there is no intermittent binding or cold weather condition which may have caused this code to set.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. BINDING LIFTGATE
1. Operate the liftgate manually.

Does the Liftgate bind or stick while opening or closing?

No

- Go To 3

Yes

- Repair the cause for the binding liftgate.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

3. (Q204) POSITION SENSOR SIGNAL CIRCUIT SHORTED TO (Q205) POSITION SENSOR SIGNAL 2 CIRCUIT




1. Measure the resistance between the (Q204) Position Sensor Signal 1 circuit and the (Q205) Position Sensor Signal 2 circuit

Is the resistance below 10,000 Ohms?

Yes

- Repair the (Q204) Position Sensor Signal 1 circuit for a short to the (Q205) Position Sensor Signal 2 circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 4

4. WEAK STRUTS
1. Check the prop rods to ensure the liftgate will self rise from approximately 1/4 open position.
2. 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).
- Perform the BODY VERIFICATION TEST. Body Verification Test.

Yes

- Replace the Power Liftgate Drive Unit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.