B1800

B1800-2A-DRIVER DOOR LOCK/UNLOCK SWITCH - STUCK





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

- When Monitored:
Continuously whenever the door module is awake.

- Set Condition:
When the Driver Door LIN Bus circuit is out of range for five seconds.





1. TEST FOR INTERMITTENT CONDITION
1. With the scan tool, record and erase the DTCs.
2. Operate the Driver Door Lock Switch several times.
3. Turn the ignition on and wait 30 seconds.
4. With the scan tool, read the DTCs.

Does the scan tool display; B1800-2A-DRIVER DOOR LOCK/UNLOCK SWITCH - STUCK?

Yes

- Go To 2

No

- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and correct pin tension.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. DOOR LOCK SWITCH




1. Disconnect the Driver Window/Door Lock Switch harness connector.
2. Turn the ignition on.
3. Measure the voltage between the (D903) Driver Door LIN Bus circuit and the (D512) Driver Door LIN Bus Return circuit.

Is the voltage between 6.5 and 12.5 volts?

Yes

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

No

- Go To 3

3. (D512) DRIVER DOOR LIN BUS RETURN CIRCUIT OPEN




1. Using a 12-volt test light connected to 12-volts, check the (D512) Driver Door LIN Bus Return circuit.

Does the test light illuminate brightly?

Yes

- Go To 4

No

- Repair the (D512) Driver Door LIN Bus Return circuit for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

4. (D903) DRIVER DOOR LIN BUS CIRCUIT OPEN




1. Turn the ignition off.
2. Disconnect the Driver Door Module C5 harness connector.
3. Measure the resistance of the (D903) Driver Door LIN Bus circuit between the Door Module C5 harness connector and the Window/Door Lock Switch connector.

Is the resistance below 2.0 Ohms?

Yes

- Go To 5

No

- Repair the (D903) Driver Door LIN Bus circuit for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

5. (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 Window/Door Lock Switch 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 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.