Circuit/System Testing

Power Windows Malfunction

1. Ignition OFF, disconnect the harness connector at the driver window switch.
2. Ignition OFF, test for less than 5.0 ohms of resistance between the ground circuit terminal F 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 C 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 WNDW fuse is open, test or replace the driver window switch.
4. Ignition OFF, connect the harness connector at the driver window switch.
5. Ignition OFF, disconnect the passenger window switch.
6. 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.
7. Ignition OFF, test for less than 5.0 ohms 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 the circuit tests normal, replace the driver window switch.
8. Ignition OFF, test for less than 5.0 ohms 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 the circuit tests normal, replace the Driver Window switch.
9. Connect a test lamp between control circuit terminal H and control circuit terminal D at the passenger windows switch harness connector.
10. Ignition ON, command the passenger window UP and DOWN by pressing the passenger window control on the driver window switch. The test lamp should illuminate during either of the commands.
    • If the test lamp remains 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.
11. Ignition OFF, reconnect the passenger window switch.
12. Ignition OFF, disconnect the harness connector at the appropriate window motor.
13. Ignition OFF, test for less than 5.0 ohms 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 the circuit tests normal, test or replace the appropriate window switch.
14. Ignition OFF, test for less than 5.0 ohms 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 the circuit tests normal, test or replace the appropriate window switch.
15. Connect a test lamp between control circuit terminal A and control circuit terminal B.
16. Ignition ON, command the appropriate window UP and DOWN by pressing the appropriate 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 or an open/high resistance on either control circuit. If all circuits test normal, test or replace the appropriate power window switch.
17. If all circuits test normal, test or replace the appropriate power window motor.

Power Window Malfunction- Express Down

1. Power window inoperative in the express down function is the result of an internal circuit failure of the driver power window switch.
2. Replace the driver power window switch.