Cutlass Ciera L4-2.2L VIN 4 (1995)
Fuel Pump Relay: Description and Operation
OPERATION
When the ignition key is first turned to the "ON" position, the Powertrain Control Module (PCM) will energize the fuel pump relay for two
seconds. This increases fuel pressure for cranking. If the engine is not running within two seconds, the PCM will shut off the relay and wait until
ignition reference pulses are present. As soon as the engine is cranked, the PCM will energize the relay and power the fuel pump.
