B1803

B1803-DRIVER DOOR LOCK/UNLOCK SWITCH CIRCUIT STUCK LOCK- CLUSTER

B1803-Driver Door Lock/Unlock Switch Circuit Stuck Lock - Cluster:

WHEN MONITORED
Continuously

SET CONDITION
When the Driver Door Lock Switch Mux circuit is between 0.8 and 1.5 volts for over 30 seconds.

POSSIBLE CAUSES
- (G161) driver door lock switch MUX circuit short to ground
- (G161) driver door lock switch MUX circuit short to the (G167) driver door lock switch return circuit
- Door lock switch short to ground
- Instrument cluster

DIAGNOSTIC TEST

1. TEST FOR INTERMITTENT CONDITION




With the scan tool, record and erase DTC's
Operate the Driver Door Lock Switch in all positions several times.
Turn the ignition on and wait 30 seconds.
With the scan tool, read DTC's.

Q: Does the scan tool display B1803-DRIVER DOOR LOCK/UNLOCK SWITCH CIRCUIT STUCK LOCK?

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 BODY VERIFICATION TEST - VER 1. Body Verification Test

2. DOOR LOCK SWITCH SHORTED




With the scan tool, erase DTC's.
Disconnect the Driver Window/Door Lock Switch C1 and C2 connectors.
With the scan tool, read DTC's.

Q: Does the scan tool display B1803-DRIVER DOOR LOCK/UNLOCK SWITCH CIRCUIT STUCK LOCK?

NO: Replace the Driver Express Window/Door Lock Switch. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
YES: Go To 3

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




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

Q: Is the resistance below 10000.0 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: Go To 4

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




Disconnect the Cluster C2 connector.
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.

Q: Is the resistance below 10000.0 ohms?

YES: Repair the (G161) Driver Door Lock Switch Mux circuit for a short to the (G167) Driver Door Lock Switch Return circuit. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Replace the Instrument Cluster. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test