TEST ACTION APPLICABILITY
4 Ensure the doors are closed.
With the DRBIIIt, read the active DTC’s and the ajar switch states.
Does the DRBIIIt display any closed switches or related DTC’s?
All
Yes → Referto the Symptom List and diagnose the appropriate symptom
in the DOOR AJAR or related category.
Perform VTSS VERIFICATION TEST - 1A.
No → Go To 5
5 Turn the ignition on.
With the DRBIIIt, read the Driver Cylinder Lock Switch MUX volts while turning
the key in the driver door lock cylinder.
Did the MUX voltage change from approximately 5.0 volts to 4.0 for lock and 2.4 for
unlock?
All
Yes → Replace and program the Instrument Cluster in accordance with
the service information.
Perform BODY VERIFICATION TEST - VER 1.
No → Go To 6
6 Disconnect the Cylinder Lock Switch connector.
Measure the voltage between Cylinder Lock Switch Mux circuit and ground.
Is the voltage between 4.6 and 5.2 volts?
All
Yes → Go To 7
No → Go To 8
7 Disconnect the Cylinder Lock Switch connector.
Using a 12-volt test light connected to 12-volts, check the Ground circuit.
Does the test light illuminate brightly?
All
Yes → Replace the Cylinder Lock Switch.
Perform VTSS VERIFICATION TEST - 1A.
No → Repair the Ground circuit for an open.
Perform VTSS VERIFICATION TEST - 1A.
8 Disconnect the Cylinder Lock Switch connector.
Disconnect the Instrument Cluster C2 connector.
Measure the resistance of the Cylinder Lock Switch Mux circuit between the Switch
connector and the Instrument Cluster connector.
Is the resistance below 5.0 ohms?
All
Yes → Replace the Instrument Cluster.
Perform VTSS VERIFICATION TEST - 1A.
No → Repair the Cylinder Lock Switch Mux circuit for an open.
Perform VTSS VERIFICATION TEST - 1A.
529
VEHICLE THEFT/SECURITY
*VTSS WILL NOT ARM PROPERLY — Continued
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