Circuit Description
WARNING: This page is about a different car, the 2000 Pontiac Firebird, 2000 Chevrolet Corvette, and 2000 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.
Fuel pump is powered by fuel pump relay. PCM energizes fuel pump relay at ignition on for 2-3 seconds. Fuel pump will remain on for as long as PCM receives reference pulse from electronic ignition system. Conditions for setting DTC:
- Engine speed greater than 400 RPM.
- System voltage is 6-18 volts.
- PCM determines that fuel pump driver commanded state and actual state do not match.
- Conditions met for at least 10 seconds.