B1952

B1952-POWER LIFTGATE DRIVE MOTOR - INCORRECT DIRECTION





For a complete wiring diagram refer to Diagrams/Electrical

- When Monitored:

Whenever the Power Liftgate Motor is in operation.

- Set Condition:

When the Power Liftgate Module senses the direction of the Power Liftgate Drive Unit 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





Turn the ignition off.

Disconnect the Power Liftgate Module C1 harness connector.

Disconnect the Power Liftgate Drive Unit harness connector.

Trace the (Q88) Liftgate Open Driver circuit and the (Q89) Liftgate Close Driver circuits between the PLG C1 harness connector and the Drive Unit harness connector.

Are the circuits crossed at either connector?

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





Disconnect the Power Liftgate Module C1 harness connector.

Measure the resistance between ground and the (Q204) Position Sensor Signal 1 circuit

Is the resistance below 10000.0 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 (204) 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 Module C1 harness connector and the Drive Unit harness 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





Measure the resistance between (Q204) Position sensor signal 1 circuit and the (Q205) Position Sensor Signal 2 circuit between the Power Liftgate Module C1 harness connector and the Power Liftgate Drive Unit harness connector.

Inspect the Power Liftgate Drive Unit and Power Liftgate Module connectors, terminals and harness for damaged or pushed out terminals, or pinched/broken wires. Repair any obvious problems.

Reconnect the Power Liftgate Module C1 and the Power Liftgate Drive Unit harness connectors.

Is the resistance below 100 ohms for either measurement, or were any wiring/harness problems identified?

No

- Replace the Power Liftgate Drive Unit.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

Yes

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