B1809

B1809-PASSENGER 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 Passenger 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 Passenger 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 B1809-PASSENGER 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 Passenger Express Window/Door Lock Switch connector.
3. With the scan tool, read DTCs.

Does the scan tool display B1809-PASSENGER DOOR LOCK/UNLOCK SWITCH CIRCUIT STUCK UNLOCK?

No

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

Yes

- Go To 3

3. (G160) PASSENGER 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 (G160) Passenger Door Lock Switch Mux circuit.

Is the resistance below 10,000 ohms?

Yes

- Repair the (G160) Passenger Door Lock Switch Mux circuit for a short to ground.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 4

4. (G160) PASSENGER DOOR LOCK SWITCH MUX CIRCUIT SHORT TO (P37) PASSENGER DOOR LOCK SWITCH RETURN CIRCUIT




1. Disconnect the Cluster C2 connector.
2. Measure the resistance between the (G160) Passenger Door Lock Switch Mux circuit and the (P37) Passenger Door Lock Switch Return circuit.

Is the resistance below 10,000 ohms?

Yes

- Repair the (G160) Passenger Door Lock Switch Mux circuit for a short to the (P37) Passenger 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.