B19F9

B19F9-LEFT REAR WINDOW SWITCH CIRCUIT STUCK - JS27







- When Monitored:
Whenever the module is awake.

- Set Condition:
When the Master Switch Left Rear Window Mux circuit is below 3.5 volts for over 30 seconds.





1. TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, record and erase the DTCs.
3. Operate the Left Rear Window Switch in all positions several times.
4. Wait 30 seconds.
5. With the scan tool, read the DTCs.

Does the scan tool display B19F9-LEFT REAR WINDOW SWITCH CIRCUIT STUCK?

Yes

- Go To 2

No

- The conditions that caused this code to set are not present at this time. Check for a sticking switch and using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. DRIVER WINDOW SWITCH SHORTED




1. With the scan tool, erase the DTCs.
2. Disconnect the Driver Window/Door Lock Switch connector.
3. With the scan tool, read the DTCs.

Does the scan tool display B19F9-LEFT REAR WINDOW SWITCH CIRCUIT STUCK?

No

- Replace the Driver Window/Door Lock Switch.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

Yes

- Go To 3

3. (Q23) MASTER SWITCH LEFT REAR WINDOW MUX CIRCUIT SHORTED TO GROUND




1. Turn the ignition off.
2. Disconnect the Driver Door Module C1 and C2 connectors.
3. Measure the resistance between ground and the (Q23) Master Switch Left Rear Window Mux circuit in the DDM C1 connector.

Is the resistance below 10,000 Ohms?

Yes

- Repair the (Q23) Master Switch Left Rear Window Mux circuit for a short to ground.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

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