B1801

B1801-DRIVER DOOR LOCK/UNLOCK SWITCH CIRCUIT LOW






For a complete wiring diagram refer to Diagrams/Electrical.

- 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 0.25 volts for over 10 seconds, the input circuit is not valid and this code will set.






Diagnostic Test

1. DTC PRESENT

Turn the ignition on.

With the scan tool, record and erase DTC's.

With the scan tool, read DTC's.

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?

No

- Go To 2

Yes

- Refer to the Symptom List for problems related to Power Door Locks.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

2. DOOR LOCK SWITCH SHORTED





Disconnect the Driver Window/Door Lock Switch C1 connector.

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 BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Go To 3

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





Turn the ignition off.

Disconnect the Instrument Cluster C4 connector.

Measure the resistance between the (G161) Driver Door Lock Switch MUX circuit and ground.

Is the resistance below 1000.0 ohms?

Yes

- Repair the (G161) Driver Door Lock Switch Mux circuit for a short to ground.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Replace the Instrument Cluster.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test