Left Rear Window Motor Inoperative - Convertible

*LEFT REAR WINDOW MOTOR INOPERATIVE - PT27





For a complete wiring diagram refer to Diagrams/Electrical



If this circuit is shorted to ground, it is very likely that the module will be damaged also. After any repair, check for proper operation. If the system is still inoperative, replace the Window Regulator Module.





Diagnostic Test

1. TEST FOR INTERMITTENT CONDITION

Turn the ignition on.

With the scan tool, record and erase DTC's

Try to operate the Rear Window up and down several times.

Wait 30 seconds.

With the scan tool, read DTC's.

Are there any power window related DTC's?

No

- Go To 2

Yes

- Refer to the symptom list for problems related to Power Windows and perform the appropriate test.

Diagnostic Test

2. MODULE OPEN





Turn the ignition off.

Remove the left front door trim panel

Disconnect the Left Window Regulator Module connector.

Connect a jumper wire between the Fused B+ circuit and the Rear Window Driver Down circuit in the connector.

Connect a second jumper wire to the Rear Window Driver Down circuit and momentarily touch it to Ground (the motor should begin to lower the window).

Reverse the jumper wires momentarily to drive the motor Up.

Did the window motor operate properly?

Yes

- Replace the Left Window Regulator Module.

- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Go To 3

3. (Q13) LEFT REAR WINDOW DRIVER UP CIRCUIT SHORT TO GROUND





Disconnect the Left Rear Window Motor connector.

Measure the resistance between Ground and the (Q13) Left Rear Window Driver Up circuit.

Is the resistance below 1,000.0 ohms?

Yes

- Repair the (Q13) Left Rear Window Driver Up circuit for a short to ground.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Go To 4

4. (Q23) LEFT REAR WINDOW DRIVER DOWN CIRCUIT SHORT TO GROUND





Measure the resistance between Ground and the (Q23) Left Rear Window Driver Down circuit.

Is the resistance below 1,000.0 ohms?

Yes

- Repair the (Q23) Left Rear Window Driver Down circuit for a short to ground.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Go To 5

5. (Q23) LEFT REAR WINDOW DRIVER DOWN CIRCUIT SHORT TO THE (Q13) LEFT REAR WINDOW DRIVER UP CIRCUIT





Measure the resistance between the (Q13) Left Rear Window Driver Up circuit and the (Q23) Left Rear Window Driver Down circuit in the motor connector.

Is the resistance below 1,000.0 ohms?

Yes

- Repair the (Q23) Left Rear Window Driver Down circuit for a short to the (Q13) Left Rear Window Driver Up circuit.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Go To 6

6. (Q13) LEFT REAR WINDOW DRIVER UP CIRCUIT OPEN





Measure the resistance of the (Q13) Left Rear Window Driver Up circuit between the Left Window Regulator Module connector and the Left Rear Window Motor connector.

Is the resistance below 2.0 ohms?

No

- Repair the (Q13) Left Rear Window Driver Up circuit for an open.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

Yes

- Go To 7

7. (Q23) LEFT REAR WINDOW DRIVER DOWN CIRCUIT OPEN.





Measure the resistance of the (Q23) Left Rear Window Driver Down circuit between the Left Window Regulator Module connector and the Left Rear Window Motor connector.

Is the resistance below 2.0 ohms?

Yes

- Replace the Window Motor (Regulator Module Assembly).

- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Repair the (Q23) Left Rear Window Driver Down circuit for an open.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test