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Chevrolet Workshop Manuals | |
Camaro V8-305 5.0L VIN E TBI (1989)Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Locations > Page 7![]() Alarm Module: Description and Operation Passkey Module And Passkey Ignition Key - Matching Codes CIRCUIT OPERATION The brain of the PASSkey(R) system is a special decoder module that reads the pellet resistance through the lock cylinder contacts. It then compares If the codes match, the decoder supplies a ground for the starter enable relay and modulates a 5 volt reference signal (at 2.5 volts) from the ECM or If the codes do not match, the decoder module sets its internal timer which locks out starter operation and fuel enable for up to three minutes. Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Locations > Page 7 | ||
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