When the ignition switch is in the RUN or ACCY position, or retained accessory power (RAP) is enabled and the driver window switch is pressed in the down position, battery positive voltage is applied to the window regulator motor causing the window to open. When the driver window switch is pressed in the up position, voltage is applied to the window regulator motor in the opposite direction and the window closes. The driver window switch also controls the passenger windows.

When the ignition switch is in the RUN or ACCY position, or RAP is enabled and the lockout switch is disengaged, battery positive voltage will be available at the passenger window switches. When an individual window switch is pressed in the down position, battery positive voltage is applied to the window regulator motor causing that window to open. When the individual window switch is pressed in the up position, voltage is applied to the window regulator motor in the opposite direction causing that window to close. The return path to ground is supplied through the inactive control circuit being normally grounded through the driver window switch.

The drivers window also has an express-down feature. This switch is labeled AUTO. Press the front of the switch part way, and the driver window will open a small amount. If the front of the switch is pressed all the way down and released, the window will go all the way down automatically.

To stop the window while it is lowering, pull the front of the switch momentarily. To raise the window, pull and hold the front of the switch.

Schematic Reference

Moveable Window Schematics

Connector End View Reference

Window Systems Connector End Views

Description and Operation

Power Windows Description and Operation

Electrical Information Reference

1. Ignition ON, command the appropriate door window UP and DOWN by pressing the appropriate window switch. Observe the operation of the appropriate door windows.

⇒	If both rear door windows are inoperative, refer to Lockout Switch Malfunction.

⇒	If all power windows are inoperative, refer to All Power Windows Inoperative.

⇒	If the front driver door window is inoperative, refer to Driver Power Window Inoperative.

⇒	If the right front door window is inoperative, refer to Front Passenger Power Window Inoperative.

⇒	If either rear door window is inoperative, refer to Rear Window Inoperative.

2. Ignition ON, command the express down function door window by pressing Auto on the driver window switch past the first detent and releasing. The driver window should roll completely down.

⇒	If the driver window fails to roll completely down, replace the driver window switch.

Lockout Switch Malfunction

1. Ignition OFF, disconnect the harness connector C3 at the BCM.
2. Ignition ON, connect a test lamp between the control circuit terminal B11 and ground.
3. Command the rear window lockout by pressing the lockout switch ON and OFF. The test lamp should turn ON and OFF while changing between the commanded states.

⇒	If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, test or replace the driver window switch.

⇒	If the test lamp is always OFF, 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.

4. If all circuits test normal, replace the BCM.

All Power Windows Inoperative

1. Ignition OFF, disconnect the harness connector at the driver window switch.
2. Ignition OFF, test for less than 1.0 ohm of resistance 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 terminal E and ground.

⇒	If the test lamp does not illuminate, test the B+ circuit for an open/high resistance. If the POWER WINDOWS fuse is open, check the B+ circuit for a short to ground. If the circuit tests normal, test or replace the retained accessory power (RAP) relay.

4. If all circuits test normal, test or replace the driver window switch.

Driver Power Window Inoperative

1. Ignition OFF, disconnect the harness connector at the driver window motor.
2. Ignition OFF, test for less than 1.0 ohm of resistance 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. If the circuit tests normal and the POWER WINDOW DRIVER fuse is open, replace the driver window motor.

4. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 3 and ground.

⇒	If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. If the circuit tests normal and the ROOF/HEAT SEAT fuse is open, replace the driver window motor.

5. Connect a test lamp between control circuit terminal 1 and ground.
6. Observe the test lamp while pressing and releasing the driver window switch in the DOWN position. The test lamp should illuminate only when the driver window switch is in the down position.

⇒	If the test lamp is always illuminated, test the control circuit for a short to voltage. If circuits test normal, test or replace the driver window switch.

⇒	If the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance. If circuits test normal, test or replace the driver window switch.

7. Connect a test lamp between control circuit terminal 2 and ground.
8. Observe the test lamp while pressing and releasing the driver window switch in the DOWN position. The test lamp should illuminate only when the driver window switch is in the down position.

⇒	If the test lamp is always illuminated, test the control circuit for a short to voltage. If circuits test normal, test or replace the driver window switch.

⇒	If the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance. If circuits test normal, test or replace the driver window switch.

9. Connect a test lamp between control circuit terminal 1 and control circuit terminal 2.
10. Command the appropriate window UP and DOWN by pressing and pulling the appropriate switch on the driver window switch. The test lamp should turn ON when commanding the UP and DOWN states.

⇒	If the test lamp remains OFF during either of the commands, test for a short to ground on either control circuit. If the circuits test normal, test or replace the driver window switch.

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

Front Passenger Power Window Inoperative

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 1.0 ohm of resistance 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 circuits test normal, test or replace the driver window switch.

4. Ignition OFF, test for less than 1.0 ohm of resistance 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 circuits test normal, test or replace the driver window switch

5. Connect a test lamp between the control circuit terminal D and control circuit terminal H.
6. Ignition ON, command the passenger window UP and DOWN by pressing and pulling the right front window switch on the driver master control. The test lamp should illuminate during either of the commands.

⇒	If the test lamp is always OFF, test for a short to ground on either control circuit. If all circuits test normal, test or replace the driver window switch.

7. Ignition OFF, reconnect the passenger window switch.
8. Ignition OFF, disconnect the harness connector at the passenger window motor.
9. Ignition OFF, test for less than 1.0 ohm of resistance between the control circuit terminal A and ground.

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

10. Ignition OFF, test for less than 1.0 ohm of resistance between the control circuit terminal B and ground.

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

11. Connect a test lamp between control circuit terminal A and control circuit terminal B.
12. Ignition ON, command the passenger window UP and DOWN by pressing and pulling the passenger window switch. The test lamp should turn ON when commanding the UP and DOWN states.

⇒	If the test lamp remains OFF during either of the commands, test for a short to ground on either control circuit. If the circuits test normal, test or replace the passenger window switch.

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

Rear Window Inoperative

1. Ignition OFF, disconnect the harness connector at the appropriate rear window switch.
2. Connect a test lamp between the control circuit terminal H and control circuit terminal D.
3. Ignition ON, command the appropriate rear window UP and DOWN by pressing and pulling the appropriate window control on the driver master control. The test lamp should illuminate during either of the commands.

⇒	If the test lamp is always OFF, test for a short to ground or open/high resistance on either control circuit. If all circuits test normal, test or replace the driver window switch.

4. Ignition OFF, reconnect the appropriate rear window switch.
5. Ignition OFF, disconnect the lockout switch circuit at the appropriate rear window switch.
6. Ignition OFF, disconnect the harness connector at the appropriate rear window motor.
7. Ignition OFF, test for less than 1.0 ohm of resistance between the control circuit terminal A and ground.

⇒	If greater than the specified range, test the control circuit for a short to voltage or an open/high resistance. If circuits test normal, replace the appropriate rear window switch.

8. Ignition OFF, test for less than 1.0 ohm of resistance between the control circuit terminal B and ground.

⇒	If greater than the specified range, test the control circuit for a short to voltage or an open/high resistance. If circuits test normal, replace the appropriate rear window switch.

9. Connect a test lamp between control circuit terminal A and control circuit terminal B.
10. Ignition ON, command the appropriate rear window UP and DOWN by pressing and pulling the appropriate rear window switch. The test lamp should turn ON when commanding the UP and DOWN states.

⇒	If the test lamp remains OFF during either of the commands, test for a short to ground on either control circuit. If the circuits test normal, replace the appropriate rear window switch.

11. Reconnect the lockout switch circuit at the appropriate rear window switch.
12. Command the appropriate rear window UP and DOWN by pressing and pulling the appropriate rear window switch. The test lamp should turn ON when commanding the UP and DOWN states.

⇒	If the test lamp remains OFF during either of the commands, test the lockout switch circuit for a short to ground. If the circuits test normal, replace the BCM.

13. If all circuits test normal, test or replace the appropriate rear window motor.

Driver Window Switch

1. Ignition OFF, disconnect the harness connector at the driver window switch.
2. Test for infinite resistance between the signal terminals D and C and the B+ circuit terminal E with the LR switch in the INACTIVE position.

⇒	If less than infinite resistance, replace the driver window switch.

3. Test for less than 2 ohms of resistance between the signal terminal D and the B+ circuit terminal E with the switch in the UP position.

⇒	If greater than 2 ohms, replace the driver window switch.

4. Test for less than 2 ohms of resistance between the signal terminal C and the B+ circuit terminal E with the switch in the DOWN position.

⇒	If greater than 2 ohms, replace the driver window switch.

5. Test for infinite resistance between the signal terminals G and H and the B+ circuit terminal E with the RR switch in the INACTIVE position.

⇒	If less than infinite resistance, replace the driver window switch.

6. Test for less than 2 ohms of resistance between the signal terminal G and the B+ circuit terminal E with the switch in the UP position.

⇒	If greater than 2 ohms, replace the driver window switch.

7. Test for less than 2 ohms of resistance between the signal terminal H and the B+ circuit terminal E with the switch in the DOWN position.
8. If greater than 2 ohms, replace the driver window switch.
9. Test for infinite resistance between the signal terminals B and C and the B+ circuit terminal E with the passenger switch in the INACTIVE position.

⇒	If less than infinite resistance, replace the driver window switch.

10. Test for less than 2 ohms of resistance between the signal terminal B and the B+ circuit terminal E with the switch in the UP position.

⇒	If greater than 2 ohms, replace the driver window switch.

11. Test for less than 2 ohms of resistance between the signal terminal C and the B+ circuit terminal E with the switch in the DOWN position.
12. If greater than 2 ohms, replace the driver window switch.
13. Test for infinite resistance between the signal terminals E and A and the B+ circuit terminal E with the driver switch in the INACTIVE position.

⇒	If less than infinite resistance, replace the driver window switch.

14. Test for less than 2 ohms of resistance between the signal terminal E and the B+ circuit terminal E with the switch in the UP position.

⇒	If greater than 2 ohms, replace the driver window switch.

15. Test for less than 2 ohms of resistance between the signal terminal A and the B+ circuit terminal E with the switch in the DOWN position.
16. If greater than 2 ohms, replace the driver window switch.

Passenger Window Switch

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

⇒	If less than infinite resistance, replace the appropriate passenger window switch.

3. Test for less than 2 ohms of resistance between the signal terminal G and the B+ circuit terminal A with the switch in the UP position.

⇒	If greater than 2 ohms, replace the appropriate passenger window switch.

4. Test for less than 2 ohms of resistance between the signal terminal F and the B+ circuit terminal A with the switch in the DOWN position.

⇒	If greater than 2 ohms, replace the appropriate passenger window switch.

Passenger Window Motor

1. Install a 30-amp fused jumper wire between the control terminal A and 12 volts. Momentarily install a jumper wire between the control terminal B and ground. The appropriate window motor should perform the UP or DOWN function.

⇒	If the function does not perform as specified, replace the appropriate window motor.

2. Reverse the jumper wires; the appropriate window motor should perform the DOWN or UP function.

⇒	If the function does not perform as specified, replace the appropriate window motor.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.