B1856

B1856-DRIVER WINDOW CONTROL CIRCUIT OPEN





For a complete wiring diagram, refer to the Wiring Information. Electrical Diagrams

- When Monitored:
Whenever the Window Motor is operating.

- Set Condition:
The Left Front Window Driver (Up) circuit does not change from high to low during a window movement command.





1. TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, erase all the DTCs.
3. Try to operate the Left Front Window up and down several times.
4. Wait 30 seconds.
5. With the scan tool, read the DTCs.

Does the scan tool display this DTC?

Yes

- Go To 2

No

- The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. WINDOW MOTOR OR CIRCUIT OPEN




1. Turn the ignition off.
2. Disconnect the Driver Express Window Motor connector.
3. Connect a test light between the (Q11) Left Front Window Express (Up) Driver circuit and the (Q21) Left Front Window Express (Down) Driver circuit
4. Turn the ignition on.
5. Trip the driver door latch to the closed position.
6. Operate the driver window switch up and down several times while observing the test light.

Does the test light illuminate brightly when the switch is pressed in both directions? With the express up window, the test light may only flash momentarily.

Yes

- Replace the Driver Window Motor.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 3

3. (Q11) LEFT FRONT WINDOW DRIVER (UP) CIRCUIT OPEN




1. Turn the ignition off.
2. Measure the resistance of the (Q11) Left Front Window Driver (Up) circuit between the Left Front Window Motor harness connector and the Driver Door Module C4 harness connector.

Is the resistance below 10.0 ohms?

Yes

- Go To 4

No

- Repair the (Q11) Left Front Window Driver (Up) circuit for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

4. (Q21) LEFT FRONT WINDOW DRIVER (DOWN) CIRCUIT OPEN




1. Measure the resistance of the (Q21) Left Front Window Driver (Down) circuit between the Left Front Window Motor harness connector and the Driver Door Module C4 harness connector.

Is the resistance below 10.0 ohms?

Yes

- Replace the Driver Door Module.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Repair the (Q21) Left Front Window Driver (Down) circuit for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test.