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Power Windows Malfunction (Convertible)




Power Windows Malfunction (Convertible)

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Diagnostic Fault Information






Circuit/System Description

The front power windows are controlled by the driver window switch and the front passenger window switch. The driver window switch contains the master power window switch that controls all power window operations. When a power window switch is activated to a desired position, power window switch will send a signal to its respective door window motor to move the window to the desired position. The window motors will also receive a signal from the body control module (BCM) to globally express down while lowering the hardtop.

The window indexing feature is used to lower the driver and passenger power windows approximately 4 mm when the door is opened. This is necessary to allow the top edge of the window to clear the window weather-strip. This feature will also raise the window to the fully seated position once the door is closed.

Reference Information
Schematic Reference

Moveable Window Schematics Electrical Diagrams
Connector End View Reference

Component Connector End Views Connector End Views By Name
Description and Operation

Power Windows Description and Operation Power Windows
Electrical Information Reference

* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs

Circuit/System Verification

1. Ignition ON, command the driver window UP and DOWN using the driver window switch. The driver window should perform the UP and DOWN functions.

• If the driver window does not perform the UP/DOWN function, refer to Driver Window Malfunction.

2. Command the front passenger window UP and DOWN using the RF window switch on the driver master control and the passenger door window switch. The passenger window should perform the UP and DOWN functions from each switch.

• If the passenger window does not perform the UP/DOWN function, refer to Passenger Window Malfunction

3. Command the rear windows UP and DOWN using the appropriate window switch on the driver master control. Each rear window should perform the UP and DOWN functions from each switch.

• If either rear window does not perform the UP/DOWN function, refer to Rear Window Malfunction.

4. Observe the operation of the driver window and front passenger window while opening and closing their respective doors. The windows should index DOWN and UP when the doors are opened and closed.

• If either window does not index UP or DOWN, refer to Window Index Feature Malfunction.

5. Command the express up and express down functions of the driver and passenger door windows by pressing their window switches past the first detent and releasing and pulling their window switches past the first detent and releasing. The appropriate window should perform the express up and express down function.

• If the function does not perform as specified, refer to Power Window Reinitialization (Coupe/Convertible Only) Programming and Relearning.

Circuit/System Testing

Driver Window Malfunction
1. Ignition OFF, disconnect the harness connector at the driver window switch.
2. Test for less than 1 ohm between the ground circuit terminal B and ground.

• If greater than the specified range, test the ground circuit for an open/high resistance.

3. Ignition ON, verify that a test lamp illuminates between the B+ circuit E and ground.

• If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.

4. Ignition OFF, connect the harness connector at the driver window switch and disconnect the harness connector at the driver window motor.
5. Test for less than 1 ohm between the ground circuit terminal 4 and ground.

• If greater than the specified range, test the ground circuit for an open/high resistance.

6. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 6 and ground.

• If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal and the PWR WDO fuse is open, replace the driver window motor.

7. Connect a test lamp between the control circuit terminal 1 and ground.
8. Ignition ON, command the driver door window DOWN by using the driver window switch. The test lamp should illuminate when commanding the DOWN state.

• If the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the driver window switch.
• If the test lamp continuously illuminates, test the control circuit for a short to voltage. If the circuit tests normal, test or replace the driver window switch.

9. Connect a test lamp between the control circuit terminal 2 and ground.
10. Command the driver door window UP by using the driver window switch. The test lamp should illuminate when commanding the UP state.

• If the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the driver window switch.
• If the test lamp continuously illuminates, test the control circuit for a short to voltage. If the circuit tests normal, test or replace the driver window switch.

11. If all circuits test normal, replace the driver window motor.

Passenger Window Malfunction
1. Ignition OFF, disconnect the harness connector at the passenger window switch.
2. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal A and ground.

• If the test lamp does not illuminate, test the B+ circuit for an open/high resistance.

3. Ignition OFF, test for less than 5 ohm between the control circuit terminal H and ground.

• If greater than the specified range, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, test or replace the driver window switch.

4. Test for less than 5 ohm between the control circuit terminal D and ground.

• If greater than the specified range, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, test or replace the driver window switch.

5. Connect a test lamp between the control circuit terminal D and the control circuit terminal H.
6. Ignition ON, command the passenger window UP and DOWN by using the RF window switch on the driver master control. The test lamp should illuminate when commanding the UP and DOWN states.

• If the test lamp does not illuminate during either of the commands, test either control circuit for a short to ground. If the circuits test normal, test or replace the driver window switch.

7. Ignition OFF, connect the harness connector at the passenger window switch and disconnect the harness connector at the passenger window motor.
8. Test for less than 1 ohm between the ground circuit terminal 4 and ground.

• If greater than the specified range, test the ground circuit for an open/high resistance.

9. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 6 and ground.

• If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal and the PWR WDO fuse is open, replace the passenger window motor.

10. Connect a test lamp between the control circuit terminal 1 and ground.
11. Command the passenger window DOWN by using the passenger window switch. The test lamp should illuminate when commanding the DOWN state.

• If the test lamp does not illuminate, test the control circuit for a short to ground. If the circuits test normal, test or replace the passenger window switch.

12. Connect a test lamp between the control circuit terminal 2 and ground.
13. Command the passenger window UP by using the passenger window switch. The test lamp should illuminate when commanding the UP state.

• If the test lamp does not illuminate, test the control circuit for a short to ground. If the circuit tests normal, test or replace the passenger window switch.

14. If all circuits test normal, replace the passenger window motor.

Rear Window Malfunction
1. Ignition OFF, disconnect the harness connector at the appropriate rear window motor.
2. Test for less than 1 ohm between the ground circuit terminal 4 and ground.

• If greater than the specified range, test the ground circuit for an open/high resistance.

3. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 6 and ground.

• If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.

4. Connect a test lamp between the control circuit terminal 1 and ground.
5. Ignition ON, command the rear window DOWN by using the window switch on the driver master control. The test lamp should illuminate when commanding the DOWN state.

• If the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the driver window switch.
• If the test lamp continuously illuminates, test the control circuit for a short to voltage. If the circuit tests normal, test or replace the driver window switch.

6. Connect a test lamp between the control circuit terminal 2 and ground.
7. Command the rear window UP by using the window switch on the driver master control. The test lamp should illuminate when commanding the UP state.

• If the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the driver window switch.
• If the test lamp continuously illuminates, test the control circuit for a short to voltage. If the circuit tests normal, test or replace the driver window switch.

8. If all circuits test normal, replace the rear window motor.

Window Index Feature Malfunction
1. Ignition ON, observe the scan tool Driver Door Ajar Sw and Door Ajar Switch parameters while opening and closing the driver and passenger doors, the parameter should change from Door Closed to Door Ajar.

• If the parameter does not change when opening and closing the doors, refer to Door Ajar Indicator Malfunction Door Ajar Indicator Malfunction.

2. Ignition OFF, disconnect the harness connector at the appropriate window motor.
3. Ignition ON, with the door closed, test for greater than 10 V between the signal circuit terminal 5 and ground.

• If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM.

4. With the door open, test for less than 1 V between the signal circuit terminal 5 and ground.

• If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the BCM.

5. If all circuits test normal, replace the window motor.

Component Testing

Driver Window Switch
1. Ignition OFF, disconnect the harness connector at the driver window switch.
2. With the switch in the INACTIVE position, test for infinite resistance between the control terminals and the B+ terminal E listed below:

* LR window switch control terminal C
* LR window switch control terminal D
* RR window switch control terminal G
* RR window switch control terminal H
* RF window switch control terminal B
* RF window switch control terminal C
* Driver window switch control terminal A
* Driver window switch control terminal E

• If less than the specified value, replace the driver window switch.

3. With the switch in the UP position, test for less than 2 ohm between the control terminals and the B+ terminal 3 listed below:

* LR window switch control terminal D
* RR window switch control terminal G
* RF window switch control terminal B
* Driver window switch control terminal E

• If greater than the specified range, replace the driver window switch.

4. With the switch in the DOWN position, test for less than 2 ohm between the control terminals and the B+ terminal 3 listed below:

* LR window switch control terminal C
* RR window switch control terminal H
* RF window switch control terminal C
* Driver window switch control terminal A

• If greater than the specified range, replace the driver window switch.

Passenger Window Switch
1. Ignition OFF, disconnect the harness connector at the passenger window switch.
2. Test for infinite resistance between the control terminals F and G and the B+ terminal A with the switch in the INACTIVE position.

• If less than the specified value, replace the passenger window switch.

3. Test for less than 2 ohm between the control terminal F and the B+ terminal A with the switch in the UP position.

• If greater than the specified range, replace the passenger window switch.

4. Test for less than 2 ohm between the control terminal G and the B+ terminal A with the switch in the DOWN position.

• If greater than the specified range, replace the passenger window switch.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.

* Front Side Door Window Switch Replacement - Right Side Front Side Door Window Switch Replacement - Right Side
* Front Side Door Window Switch Replacement - Left Side Front Side Door Window Switch Replacement - Left Side
* Front Side Door Window Regulator Replacement (Sedan) Front Side Door Window Regulator Replacement (Sedan)Front Side Door Window Regulator Replacement (Coupe and Convertible) Front Side Door Window Regulator Replacement (Coupe and Convertible)

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