Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Passlock™ Module
The Passlock™ module contains the theft deterrent system logic. The Passlock™ module reads the Passlock™ data from the Passlock™ sensor. The Passlock™ module will determine the validity of the Passlock™ data. If the Passlock™ data is correct, the Passlock™ module will pass theft. The Passlock™ module will then transmit the code password to the VCM/PCM. See Figure. When the VCM/PCM receives the correct code the VCM/PCM allows the fuel injectors to operate normally.
During the tamper mode the vehicle may start. The vehicle will quickly stall. If the Passlock™ module receives the wrong Passlock™ data, the anti-theft will immediately go into the tamper mode. The tamper mode will lock-out the vehicle fuel injectors for 10 minutes. The SECURITY indicator will flash while the anti-theft is in the tamper mode.
If the Passlock™ sensor sends a correct password to the Passlock™ module when the ignition is in the ON position, the Passlock™ module will send a fuel enable signal to the VCM/PCM. The VCM/PCM will not disable the fuel due to any Passlock™ module message for the remainder of the ignition cycle.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.