B1858

B1858-DRIVER WINDOW POSITION SENSOR POWER SUPPLY LOW





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

- When Monitored:
Whenever the module is awake.

- Set Condition:
When the Driver Window Hall Sensor Supply circuit falls below 0.8 volts for over 480 ms., this code will set.





1. TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, record and erase the DTCs
3. Operate the Driver Window up and down several times.
4. Wait 30 seconds.
5. With the scan tool, read the DTCs.

Does the scan tool display B1858-DRIVER WINDOW POSITION SENSOR POWER SUPPLY LOW?

Yes

- Go To 2

No

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

2. WINDOW MOTOR SHORTED




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

Does the scan tool display B1858-DRIVER WINDOW POSITION SENSOR POWER SUPPLY LOW?

No

- Replace the Window Motor (regulator).
- Perform the BODY VERIFICATION TEST. Body Verification Test.

Yes

- Go To 3

3. (Q305) DRIVER WINDOW HALL SENSOR SUPPLY CIRCUIT SHORT TO GROUND




1. Turn the ignition off.
2. Disconnect the Driver Door Module C4 connector.
3. Measure the resistance between Ground and the (Q305) Driver Window Hall Sensor Supply circuit.

Is the resistance below 1,000 ohms?

Yes

- Repair the (Q305) Driver Window Hall Sensor Supply circuit for a short to ground.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

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