Fuel Pump Driver

ECU Output: Fuel Pump Driver

The fuel pump is driven off port PH6. A 'low' output will cause the fuel pump to run, and a 'high' output will turn it off. The ECU software will always disable the fuel pump about 2.7 seconds after it notices that the crankshaft is not turning. This is why you hear the pump energize for 2.7 seconds after initially turning the ignition key on.