U0037

U0037-11-LIN BUS - CIRCUIT SHORT TO GROUND - DS/DJ/D2





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

- When Monitored:
Continuously when the ignition is on.

- Set Condition:
The module detects a short to ground on the LIN Bus circuit.





1. VERIFY DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE
1. Turn the ignition on.
2. With the scan tool, read the active DTCs.

Does the scan tool display U0037-11-LIN BUS - CIRCUIT SHORT TO GROUND?

Yes

- Go To 2

No

- Perform the Stored Lost Communication DTCs diagnostic procedure.

2. CHECK THE LIN BUS CIRCUIT




1. Turn the ignition off.
2. Disconnect the Driver Window/Door Lock Switch C1 harness connector.
3. Turn the ignition on.
4. Measure the voltage between the (D500) LIN Bus circuit (2 Door cavity 3 - 4 Door cavity 6) and the (D501) LIN Bus Return circuit.

Is the voltage below 7.0 Volts?

Yes

- Go To 3

No

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

3. (D500) LIN BUS CIRCUIT SHORTED TO GROUND




1. Turn the ignition off.
2. Disconnect the Driver Door Module C5 harness connector.
3. Measure the resistance between ground and the (D500) LIN Bus circuit in the Door Module C5 harness connector.

Is the resistance below 10,000 Ohms?

Yes

- Repair the short to ground in the (D500) LIN Bus circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 4

4. (D500) LIN BUS CIRCUIT SHORTED TO THE (D501) LIN BUS RETURN CIRCUIT




1. Measure the resistance between the (D500) LIN Bus circuit and the (D501) LIN Bus Return circuit in the Door Module C5 harness connector.

Is the resistance below 10,000 Ohms?

Yes

- Repair the (D500) LIN Bus circuit for a short to the (D501) LIN Bus Return circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

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