B1928

B1928-LEFT REAR WINDOW CONTROL CIRCUIT HIGH - LRDM





For a complete wiring diagram REFER to DIAGRAMS/ELECTRICAL .


- 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.






Diagnostic Test


1. TEST FOR INTERMITTENT CONDITION
Turn the ignition on.
With the scan tool, erase all DTC's.
Try to operate the Left Rear Window up and down several times.
Wait 30 seconds.
With the scan tool, read DTC's.
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 BODY VERIFICATION TEST - VER 1.Body Verification Test


2. WINDOW MOTOR SHORTED




With the scan tool, erase DTC's.
Turn the ignition off.
Disconnect the Left Rear Window Motor connector.
Turn the ignition on.
Operate the Left Rear window switch up and down several times.
With the scan tool, read DTC's.
Does the scan tool display B1928-LEFT REAR WINDOW CONTROL CIRCUIT HIGH?

No


- Replace the Left Rear Window Motor.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test.


Yes


- Go To 3


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




Turn the ignition off.
Disconnect the Left Rear Door Module C1 harness connector.
Turn the ignition on.
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 - VER 1.Body Verification Test


No


- Go To 4


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




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 - VER 1.Body Verification Test


No


- Replace the Left Rear Door Module.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test