B1952

B1952-POWER LIFTGATE DRIVE MOTOR - INCORRECT DIRECTION





For a complete wiring diagram Consult Diagrams/Electrical

- When Monitored:
Whenever the Power Liftgate Motor is in operation.

- Set Condition:
When the Power Liftgate Module senses the direction of the drive motor is in opposition to the direction it is trying to drive the liftgate, this code will set.





Diagnostic Test

1. DTC PRESENT
With the scan tool, record DTC's.
Erase DTC's
Turn the ignition off, wait 10 seconds, then turn the ignition on.
If possible, operate the liftgate several times.
With the scan tool, read DTCs.
Does the scan tool display B1952-POWER LIFTGATE DRIVE MOTOR - INCORRECT DIRECTION?

Yes

- Go To 2

No

- Using the wiring diagram/schematic as a guide, inspect the wiring and connectors for an intermittent condition.
- PERFORM BODY VERIFICATION TEST - VER 1. Body Verification Test

2. (Q88) LIFTGATE OPEN DRIVER CIRCUIT AND THE (Q89) LIFTGATE CLOSE DRIVER CIRCUITS ARE CROSSED OR SHORTED TOGETHER




Turn the ignition off.
Disconnect the Power Liftgate Module C1 connector.
Disconnect the Power Liftgate Drive Unit connector.
Trace the (Q88) Liftgate Open Driver circuit and the (Q89) Liftgate Close Driver circuits between the PLG C1 connector and the Drive Unit connector.
Are the circuits crossed or shorted together?

No

- Go To 3

Yes

- Correct the wiring as necessary.
- PERFORM BODY VERIFICATION TEST - VER 1. Body Verification Test

3. (Q204) POSITION SENSOR SIGNAL 1 CIRCUIT SHORT TO GROUND




Measure the resistance between ground and the (Q204) Position Sensor Signal 1 circuit
Is the resistance below 10,000.0 ohms?

Yes

- Repair the (Q204) Position Sensor Signal 1 circuit for a short to ground.
- PERFORM BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Go To 4


4. (Q204) POSITION SENSOR SIGNAL 1 CIRCUIT SHORT TO VOLTAGE




Turn the ignition on.
Measure the voltage between ground and the (Q204) Position Sensor Signal 1 circuit
Is there any voltage present?

Yes

- Repair the (Q204) Position Sensor Signal 1 circuit for a short to voltage.
- PERFORM BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Go To 5


5. (Q204) POSITION SENSOR SIGNAL 1 CIRCUIT OPEN




Turn the ignition off.
Measure the resistance of the (Q204) Position Sensor Signal 1 circuit between the PLG C1 connector and the Drive Unit connector.
Is the resistance below 5.0 ohms?

No

- Repair the (Q204) Position Sensor Signal 1 circuit for an open.
- PERFORM BODY VERIFICATION TEST - VER 1. Body Verification Test

Yes

- Go To 6


6. (Q204) POSITION SENSOR SIGNAL 1 AND THE (Q205) POSITION SENSOR SIGNAL 2 CIRCUITS ARE CROSSED OR SHORTED




Trace the (Q204) Position sensor signal 1 circuit and the (Q205) Position Sensor Signal 2 circuits for possibly being crossed between the PLG C1 connector and the Drive Unit connector.
Are the circuits crossed or shorted together?

No

- Replace the Drive Unit.
- PERFORM BODY VERIFICATION TEST - VER 1. Body Verification Test

Yes

- Correct the wiring as necessary. If no obvious wiring problems have been identified, replace the Power Liftgate Module.
- PERFORM BODY VERIFICATION TEST - VER 1. Body Verification Test