B1963
B1963-POWER LIFTGATE STRUT PERFORMANCE
For a complete wiring diagram refer to Diagrams/Electrical
- 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 1 second) after disengaging the power liftgate drive unit.
Diagnostic Test
1.DTC PRESENT
With the scan tool, record DTC's and any liftgate inhibitors.
Erase DTC's
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. Body Verification Test
2.BINDING LIFTGATE
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 BODY VERIFICATION TEST - VER 1. Body Verification Test
3.(Q204) POSITION SENSOR SIGNAL CIRCUIT SHORTED TO (Q205) POSITION SENSOR SIGNAL 2 CIRCUIT
Measure the resistance between the (Q204) Position Sensor Signal 1 circuit and the (Q205) Position Sensor Signal 2 circuit
Is the resistance below 10000.0 ohms?
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. Body Verification Test
No
- Go To 4
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).
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
Yes
- Replace the Power Liftgate Drive Unit.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test