Cluster
B1804-Driver Door Lock/Unlock Switch Input Struck Unlock-Cluster:
B1804-DRIVER DOOR LOCK/UNLOCK SWITCH INPUT STUCK UNLOCK- CLUSTER
For a complete wiring diagram refer to Diagrams/Electrical.
WHEN MONITORED
Continuously
SET CONDITION
When the Cluster senses an Unlock input on the Driver Door Lock Switch MUX circuit for over 30 seconds, this code will set.
POSSIBLE CAUSES
- (G161) Driver door lock switch MUX circuit partial short to ground
- Driver door lock switch stuck
- Instrument cluster
Theory of Operation
This code will only set in Cluster in vehicles that do not have the Memory System.
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.
Cycle the ignition from on to off 3 times.
Turn the ignition on.
With the scan tool, read DTC's.
Q: Does the scan tool display DRIVER DOOR LOCK/UNLOCK SWITCH INPUT 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 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 connector.
With the scan tool, read DTC's.
Q: Does the scan tool display DRIVER DOOR LOCK/UNLOCK SWITCH INPUT STUCK UNLOCK?
NO: Replace the Driver 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 PARTIAL SHORT TO GROUND
Disconnect the Cluster C2 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: Replace the Instrument Cluster. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test