Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Diagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Driver Power Window Switch Ground Circuit | -- | 1, 2 | 1, 2 | -- |
Driver Power Window Switch Supply Voltage | 1, 2 | 1, 2 | -- | -- |
1. Window will not roll UP 2. Window will not roll DOWN | ||||
Circuit/System Description
When the drive power window switch is pressed momentarily in the down position past the first detent, the window will express down to the full open position when the switch is released. To cancel the express down operation, momentarily press the driver power window to the up position.
Diagnostic Aids
| • | The drivers power window switch is closed to ground in the rest position on both window terminals. When the switch is engaged one of the circuits switches to power completing the circuit. |
| • | The power window actuators are bi-directional. |
| • | The power window actuators have a time out circuit, which will open the circuit after power is supplied for more than 30 seconds. |
Reference Information
Schematic Reference
Connector End View Reference
Window Systems Connector End Views
Description and Operation
Power Windows Description and Operation
Electrical Information Reference
Circuit/System Verification
Ignition ON, observe the drivers window, while pressing and releasing the down switch for the drivers window. The window should roll completely down on command.
Circuit/System Testing
- Ignition ON, command the driver window UP and DOWN by pressing down and pulling up on the driver window switch. The driver window should roll down and up as commanded.
- Press AUTO past the first detent on the driver window switch and release, the driver window should roll completely down.
| ⇒ | If the driver window fails to roll down or up, refer to Power Windows Inoperative - One or Both Front Windows . |
| ⇒ | If the window fails to roll completely down, test or replace the driver window switch. |
Component Testing
Driver Window Switch
- Ignition OFF, disconnect the harness connector at the driver window switch.
- Test for infinite resistance between the signal terminals G and H and the B+ circuit terminal C with the driver window switch in the INACTIVE position.
- Test for less than 2 ohms of resistance between the signal terminal G and the B+ circuit terminal C with the driver window switch in the UP position.
- Test for less than 2 ohms of resistance between the signal terminal H and the B+ circuit terminal C with the driver window switch in the DOWN position.
- If greater than 2 ohms, replace the driver window switch
| ⇒ | If less than infinite resistance, replace the driver window switch. |
| ⇒ | If greater than 2 ohms, replace the driver window switch. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
