B1801

B1801-DRIVER DOOR LOCK/UNLOCK SWITCH CIRCUIT LOW





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

- When Monitored:
At all times when battery power is supplied to the Instrument Cluster.

- Set Condition:
When the Instrument Cluster senses voltage to the driver door lock switch below.25 of a volt for over 10 seconds, the input circuit is not valid and this code will set.





1. DTC PRESENT
1. Turn the ignition on.
2. With the scan tool, record and erase the DTCs.
3. With the scan tool, read the DTCs.
4. Operate the door locks several times from the Driver Door Lock Switch while monitoring the scan tool.

Does the scan tool display B1801-DRIVER DOOR LOCK/UNLOCK SWITCH CIRCUIT LOW?

Yes

- Go To 2

No

- Using the wiring/schematic as a guide, inspect the wiring and connectors.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. DOOR LOCK SWITCH SHORTED




1. Disconnect the Driver Window/Door Lock Switch C1 connector.
2. With the scan tool in sensors, read the DRV DOOR LOCK SW MUX circuit.

Is the voltage above 4.6 volts?

Yes

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

No

- Go To 3

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




1. Turn the ignition off.
2. Disconnect the Instrument Cluster C4 connector.
3. Measure the resistance between the (G161) Driver Door Lock Switch Mux circuit and ground.

Is the resistance below 1,000 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

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