Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

The power window express function is operated by the window switch, window motor and power window control module. The system is powered by a battery supply circuit, ignition supply and retained accessory power signal circuit. These determine when the window may be operated. The switch signal circuits supply battery voltage which is supplied via a relay and monitored within the BCM. When a front window switch is pulled for a duration of .4 seconds the express up function is acknowledged by the power window control module and supplies power to the window until it reaches the fully up position.

Schematic Reference

Moveable Window Schematics

Connector End View Reference

Component Connector End Views

Electrical Information Reference

1. Verify that the Retained Accessory Power (RAP) circuit is functioning normally.

⇒	If the RAP is not functioning normally refer to Retained Accessory Power (RAP) Description and Operation .

Window Switch Test

1. Disconnect the window switch harness connector.
2. Verify less than 1 ohm of resistance from the ground circuit terminal and ground.

⇒	If the resistance is greater than the specified value, repair the ground circuit for an open/high resistance.

3. Ignition On, connect a fused jumper wire from the ground circuit terminal in the harness connector to the open signal circuit terminal and verify that the window opens.

⇒	If the window does not open perform the Window Motor Circuit Test.

4. Connect a fused jumper wire from the ground circuit terminal to the close signal circuit terminal and verify that the window closes.

⇒	If the window does not close perform the Window Motor Circuit Test.

5. Connect a fused jumper wire from the ground circuit terminal to the open signal circuit terminal and verify that the window opens.

⇒	If the window does not open perform the Window Motor Circuit Test.

6. Connect a fused jumper wire from the ground circuit terminal to the close signal circuit terminal and verify that the window closes.

⇒	If the window does not close perform the Window Motor Circuit Test.

7. Connect a fused jumper wires from the ground circuit terminal to the express signal circuit terminal the open signal circuit terminal and verify that the wind express closes.

⇒	If the window does not express close perform the Window Motor Circuit Test.

8. If all circuits test normal, replace the window switch.

Window Motor Circuit Test

1. Disconnect the window motor harness connector.
2. Verify less than 1 ohm of resistance from the ground circuit terminal and ground.

⇒	If the resistance is greater than the specified value, repair the ground circuit for an open/high resistance.

3. Connect a test lamp from the ground circuit terminal to the battery supply circuit terminal and verify that the test lamp illuminates.

⇒	If the test lamp does not illuminate, repair the battery supply circuit for an open/high resistance or short to ground.

4. Ignition on, connect a test lamp from the ground circuit terminal to the ignition supply circuit terminal and verify that the test lamp illuminates.

⇒	If the test lamp does not illuminate, repair the ignition supply circuit for an open/high resistance or short to ground.

5. Ignition on, connect a test lamp from the ground circuit terminal to the accessory supply circuit terminal and verify that the test lamp illuminates.

⇒	If the test lamp does not illuminate, repair the accessory supply circuit for an open/high resistance or short to ground.

6. Connect the window motor connector and disconnect the window switch connector.
7. Ignition on, verify that battery voltage is present at each of the switch signal circuit terminals in the switch harness connector.

⇒	If battery voltage is not present at all of the signal circuits, test the affected signal circuit for an open/high resistance or short to ground. If the circuit tests normal replace the window motor.

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

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.