Chart A-5, Engine Cranks But Will Not Run: Notes

With ignition on, ECM activates fuel pump relay and operates fuel pump. Fuel pump operates as long as engine is running or cranking and ECM is receiving ignition reference pulses. If ignition reference pulses are not received, ECM will turn off fuel pump within 2 seconds after ignition is turned on. ECM is located under left side of instrument panel, left of steering column, and contains 24-pin and 32-pin connectors.

1. Checks for battery voltage at fuel pump relay.
2. Checks fuel pump wiring circuit.
3. Determines if ECM is supplying voltage to fuel pump relay.