U0037-11
U0037-11-LIN BUS - CIRCUIT SHORT TO GROUND
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 DTC IS ACTIVE
1. Turn the ignition on.
2. With the scan tool, read active Door Module DTCs.
Does the scan tool display: U0037-11-LIN BUS - CIRCUIT SHORT TO GROUND as Active?
Yes
- Go To 2
No
- Perform the Stored Lost Communication DTCs diagnostic procedure. Stored Lost Communication DTCs
2. CHECK THE LIN BUS CIRCUIT
1. Turn the ignition off.
2. Disconnect the Driver Window/Door Lock Switch harness connector.
3. Turn the ignition on.
4. Measure the voltage between the (D903) Driver Door LIN Bus circuit and the (D512) Driver Door LIN Bus Return circuit.
Is the voltage above 7.0 volts?
No
- Go To 3
Yes
- Replace the Driver Window/Door Lock Switch.
- Perform the BODY VERIFICATION TEST. Body Verification Test.
3. (D903) DRIVER DOOR 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 (D903) Driver Door LIN Bus circuit in the Door Module C5 harness connector.
Is the resistance below 10K Ohms?
Yes
- Repair the (D903) Driver Door LIN Bus circuit for a short to the ground.
- Perform the BODY VERIFICATION TEST. Body Verification Test.
No
- Go To 4
4. (D903) DRIVER DOOR LIN BUS CIRCUIT SHORTED TO THE (D512) DRIVER DOOR LIN BUS RETURN CIRCUIT
1. Measure the resistance between the (D903) Driver Door LIN Bus circuit and the (D512) Driver Door LIN Bus Return circuit in the Door Module C5 harness connector.
Is the resistance below 10K Ohms?
Yes
- Repair the (D903) Driver Door LIN Bus circuit for a short to the (D512) Driver Door LIN Bus Sense Return circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.
No
- Replace the Driver Door Module. Door Module - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.