B1928

B1928-LEFT REAR WINDOW CONTROL CIRCUIT HIGH





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

- When Monitored:
Whenever the Window Motor is operating.

- Set Condition:
The Left Rear 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 DTCs.
3. Try to operate the Left Rear 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 SHORTED




1. With the scan tool, erase the DTCs.
2. Turn the ignition off.
3. Disconnect the Left Rear Window Motor connector.
4. Turn the ignition on.
5. Operate the Left Rear window switch up and down several times.
6. With the scan tool, read the DTCs.

Does the scan tool display B1928-LEFT REAR WINDOW CONTROL CIRCUIT HIGH?

No

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

Yes

- Go To 3

3. (Q111) LEFT REAR WINDOW DRIVER (UP) CIRCUIT SHORTED TO VOLTAGE




1. Turn the ignition off.
2. Disconnect the Left Rear Door Module C1 harness connector.
3. Turn the ignition on.
4. Measure the voltage between ground and the (Q111) Left Rear Window Driver (Up) circuit.

Is there any voltage present?

Yes

- Repair the (Q111) Left Rear Window Driver (Up) circuit for a short to voltage.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 4

4. (Q211) LEFT REAR WINDOW DRIVER (DOWN) CIRCUIT SHORT TO VOLTAGE




1. Measure the voltage between ground and the (Q211) Left Rear Window Driver (Down) circuit.

Is there any voltage present?

Yes

- Repair the (Q211) Left Rear Window Driver (Down) circuit for a short to voltage.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

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