- Diagnostic System Check - Theft Deterrent

Diagnostic Trouble Code Chart:

wiring Schematic:

CIRCUIT DESCRIPTION
The Passlock system is designed to prevent engine operation if the correct key is not used to start the vehicle. The ignition key turns the lock cylinder, cylinder rotation produces an analog voltage code in the Passlock sensor.

The Passlock/EVO module receives this voltage code and is compared to the last learned voltage code. If the codes match, the Passlock/EVO module sends a class 2 message to the VCM, enabling the fuel injectors.

DIAGNOSTIC AIDS
You must perform the Diagnostic System Check prior to diagnosing any symptom or any Diagnostic Trouble Code table. Diagnose the DTCs in the order specified in the Passlock System "Displaying Diagnostic Trouble Codes" List. Failure to do so may result in the following conditions:
^ Extended diagnostic time
^ Incorrect diagnosis
^ Incorrect parts replacement

If a Passlock/EVO module, a passlock sensor, or the VCM have been replaced, perform the learn procedure before following the Diagnostic System Check.