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.
PASS-Key II
1996 Cadillac Eldorado V8-4.6L VIN 9SECTION PASS-Key II
PASS-KEY II
PASS-Key II is a system that prevents the vehicle from starting by disabling the fuel injection system and starter circuit under possible theft situations.
When a key is inserted in the ignition, contacts located in the ignition cylinder contact the resistor pellet in the key. The Instrument Panel Cluster (IPC) measures the resistance of the key pellet and then compares it to the one stored in the IPCs memory. If the key pellets value matches, the IPC grounds the Starter Enable Relay allowing the starter to operate. The IPC also sends a Class 2 message to the Powertrain Control Module (PCM). The PCM will then enable fuel.
PASS-Key II is a system that prevents the vehicle from starting by disabling the fuel injection system and starter circuit under possible theft situations.
When a key is inserted in the ignition, contacts located in the ignition cylinder contact the resistor pellet in the key. The Instrument Panel Cluster (IPC) measures the resistance of the key pellet and then compares it to the one stored in the IPCs memory. If the key pellets value matches, the IPC grounds the Starter Enable Relay allowing the starter to operate. The IPC also sends a Class 2 message to the Powertrain Control Module (PCM). The PCM will then enable fuel.
RENDER: 1.0x
NO RELATED
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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.