SL L4-1.9L DOHC VIN 7 (1992)
Fuel Pump Relay: Description and Operation
Fuel Pump Control Wiring.
OPERATION
The PCM will supply power to the fuel pump relay controlling operation of the in tank electric fuel pump. The PCM will energize the relay when
the ignition is first turned to the Run position. If the vehicle is not started within two seconds the relay will be de-energized until reference pulses,
indicating the engine is running, are received from the ignition module. The fuel pump relay will be de-energized, turning "OFF" the fuel pump,
when the ignition is turned to "OFF" or if the ignition is in Run and no engine reference pulses are seen within 2 (+/- 0.75) seconds.
LOCATION
The fuel pump relay is located in the Instrument Panel Junction Block (IPJB). The IPJB is located under the center of the instrument panel directly
in front of the console.
DIAGNOSTIC NOTES
Relays in the junction block are interchangeable.
The fuel pump test hole may be used to prime the system or test if the relay is operating.
