Circuit/System Testing

Driver Power Window Malfunction

1. Ignition OFF, disconnect the harness connector at the driver window switch.
2. Test for less than 5 ohms between the ground circuit terminal 3 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 2 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, replace the DDM.
4. Ignition OFF, disconnect the X1 harness connector at the DDM.
5. Test for less than 1 ohm between the ground circuit terminal 9 and ground.
   • If greater than the specified range, test the ground circuit for and open/high resistance.
6. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 2 and ground.
   • If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
7. Ignition OFF, connect the X1 harness connector at the DDM.
8. Ignition ON, verify the scan tool Driver LF Window Switch, Driver RF Window Switch, Driver LR Window Switch, and Driver RR Window Switch parameters are Idle.
   • If not the specified value, replace the DDM
9. Ignition OFF, connect the harness connector at the driver window switch.
10. Ignition ON, observe the scan tool Driver LF Window Switch, Driver RF Window Switch, Driver LR Window Switch, and Driver RR Window Switch parameters while using the window switches on the driver master control. The parameters should change from Idle to Up, Down, Express Up and Xpress Down.
    • If all values do not change from Idle, replace the DDM.
    • If some values do not change, replace the driver window switch.
11. Ignition OFF, disconnect the harness connector at the driver window motor.
12. Test for less than 5 ohms between the ground circuit terminal 4 and ground.
    • If greater than the specified range, test the ground circuit for and open/high resistance.
13. 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.
14. Connect a test lamp between the control circuit terminal 1 and ground.
15. Command the Driver Window Motor DOWN with a scan tool, the test lamp should illuminate during the DOWN command.
    • 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, replace the DDM.
    • If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the DDM.
16. Connect a test lamp between the control circuit terminal 2 and ground.
17. Command the Driver Window Motor UP with a scan tool, the test lamp should illuminate during the UP command.
    • 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, replace the DDM.
    • If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the DDM.
18. If all circuits test normal, replace the driver window motor.

Passenger Power Window Malfunction

1. Ignition OFF, disconnect the harness connector at the appropriate passenger window switch.
2. Ignition ON, verify that a test lamp illuminates between the low reference circuit terminal 4 and B+.
   • If the test lamp does not illuminate, test the low reference circuit for a short to voltage or and open/high resistance. If the circuit tests normal, replace the door module.
3. Verify the scan tool Window Switch parameter is Idle.
   • If not the specified value, test the signal circuit terminal listed below for a short to ground, if the circuit tests normal, replace the door module.
     • Down signal circuit terminal 1
     • Express down signal circuit terminal 3
     • Up signal circuit terminal 2
4. Ignition OFF, connect the harness connector at the window switch.
5. Ignition ON, observe the scan tool Window Switch parameters while using the window switch. The parameters should change from Idle to Up, Down, Express Down
   • If the parameters do not change, test the signal circuit listed below for a short to voltage or an open/high resistance. If the circuit tests normal, test or replace the window switch.
     • Down signal circuit terminal 1
     • Express down signal circuit terminal 3
     • Up signal circuit terminal 2
6. Ignition OFF, disconnect the harness connector at the passenger window motor.
7. Test for less than 5 ohms between the ground circuit terminal 4 and ground.
   • If greater than the specified range, test the ground circuit for and open/high resistance.
8. 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.
9. Connect a test lamp between the control circuit terminal 1 and ground.
10. Command the passenger window DOWN by using the passenger window switch, the test lamp should illuminate during the DOWN command.
    • 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, replace the door module.
    • If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the door module.
11. Connect a test lamp between the control circuit terminal 2 and ground.
12. Command the passenger window UP by using the passenger window switch, the test lamp should illuminate during the UP command.
    • 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, replace the door module.
    • If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the door module.
13. If all circuits test normal, replace the passenger window motor.