B1804

B1804-DRIVER DOOR LOCK/UNLOCK SWITCH CIRCUIT STUCK UNLOCK





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

- When Monitored:
Continuously.

- Set Condition:
When the Driver Door Lock Switch Mux circuit is between 0.15 and 0.8 volts for over 30 seconds.





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

Does the scan tool display B1804-DRIVER DOOR LOCK/UNLOCK SWITCH CIRCUIT STUCK UNLOCK?

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. DOOR LOCK SWITCH SHORTED




1. With the scan tool, erase DTCs.
2. Disconnect the Driver Window/Door Lock Switch C1 and C2 connectors.
3. With the scan tool, read DTCs.

Does the scan tool display B1804-DRIVER DOOR LOCK/UNLOCK SWITCH CIRCUIT STUCK UNLOCK?

No

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

Yes

- Go To 3

3. (G161) DRIVER DOOR LOCK SWITCH MUX CIRCUIT SHORT TO GROUND




1. Turn the ignition off.
2. Disconnect the Cluster C1 connector.
3. Measure the resistance between ground and the (G161) Driver Door Lock Switch Mux circuit.

Is the resistance below 10,000 ohms?

Yes

- Repair the (G161) Driver Door Lock Switch Mux circuit for a short to ground.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 4

4. (G161) DRIVER DOOR LOCK SWITCH MUX CIRCUIT SHORT TO (G167) DRIVER DOOR LOCK SWITCH RETURN CIRCUIT




1. Disconnect the Cluster C2 connector.
2. Measure the resistance between the (G161) Driver Door Lock Switch Mux circuit and the (G167) Driver Door Lock Switch Return circuit in the Cluster C2 connector.

Is the resistance below 10,000 ohms?

Yes

- Repair the (G161) Driver Door Lock Switch Mux circuit for a short to the (G167) Driver Door Lock Switch Return circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Replace the Instrument Cluster.
- Perform the BODY VERIFICATION TEST. Body Verification Test.