Cylinder Lock Switch INOP

CYLINDER LOCK SWITCH INOP

Cylinder Lock Switch Inop:

POSSIBLE CAUSES
- DTC present
- (Z463) Cylinder lock switch ground open
- (G163) Cylinder lock switch MUX circuit open
- (G163) Cylinder lock switch MUX wire short to ground
- Cylinder lock switch
- Instrument cluster

Diagnostic Test

1. DTC PRESENT




Turn the ignition on.
With the DRBIII(R), read DTC's.

Q: Are there any Power Door Lock related trouble codes?

YES: Refer to symptom list for problems related to Power Door Locks. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Go To 2

2. CYLINDER LOCK SWITCH VOLTAGE LOW




Turn the ignition off.
Disconnect the Cylinder Lock Switch connector.
Measure the voltage between (G163) Cylinder Lock Switch MUX circuit and ground.

Q: Is the voltage between 4.6 and 5.2 volts?

YES: Go To 3
NO: Go To 4

3. (Z463) CYLINDER LOCK SWITCH GROUND OPEN




Using a 12-volt test light connected to 12-volts, check the (Z463) Ground circuit.

Q: Does the test light illuminate brightly?

YES: Replace the Cylinder Lock Switch. Perform Body Verification Test - Ver 1. Body Verification Test
NO: Repair the (Z463) Ground circuit for an open. Perform Body Verification Test - Ver 1. Body Verification Test

4. (G163) CYLINDER LOCK SWITCH MUX OPEN




Turn the ignition off.
Disconnect the Instrument Cluster C4 connector.
Measure the resistance of the (G163) Cylinder Lock Switch Mux circuit between the Switch connector and the Instrument Cluster connector.

Q: Is the resistance below 5.0 ohms?

YES: Go To 5
NO: Repair the (G163) Cylinder Lock Switch Mux circuit for an open. Perform Body Verification Test - Ver 1. Body Verification Test

5. (G163) CYLINDER LOCK SWITCH MUX WIRE SHORT TO GROUND




Measure the resistance between Ground and the (G163) Cylinder Lock Switch Mux circuit in the Cluster C4 connector.

Q: Is the resistance below 1000.0 ohms?

NO: Replace the Instrument Cluster. Perform Body Verification Test - Ver 1. Body Verification Test
YES: Repair the (G163) Cylinder Lock Switch Mux circuit for a short to ground. Perform Body Verification Test - Ver 1. Body Verification Test