Fuel Pump: Description and Operation

Block Diagram:

Operation
- When the engine is running (including cranking), terminal 70 (with immobilizer) or 80 (without immobilizer) of the PCM is ON (0 V) actuating the fuel pump through the fuel pump relay.
- When the engine is stopped, terminal 70 (with immobilizer) or 80 (without immobilizer) of the PCM is OFF (battery positive voltage) and the fuel pump is not actuated.