Bonneville V6-3800 3.8L Supercharged (1992)
Pass-Key Module Input (Fuel Enable): Description and Operation
When the ignition is turned "ON", the PASS-key (registered trademark) decoder "reads" the key resistor pellet. If the proper resistance is recognized by
the decoder module, it sends a PWM fuel enable signal to the PCM. The PCM looks for this signal during crank and allows fuel delivery by enabling the
injectors when the signal is recognized. If the fuel enable signal is lost while the engine is running, the PCM will store code 58 and the vehicle will run
normally. As long as code 58 is stored, the PCM will ignore any absence of the fuel enable signal and the car will start and run as long as the problem is
isolated to the fuel enable circuit only.
