acura Workshop Repair Guides

Acura (Honda) Workshop Service and Repair Manuals

Fuel Pump Relay|Testing and Inspection > < Testing For a Short to Ground With a Short Circuit Locator|Page 5469
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Fuel Pump Relay: Description and Operation

Main Relay Operation

PURPOSE

The Fuel Pump relay is part of the Main Relay which consists of two relays in one assembly. Relay (1) supplies battery voltage to the fuel ECM,
fuel injectors and power to the second relay. Relay (2) supplies power to the fuel pump.

OPERATION

The Fuel Pump relay is energized for two seconds when the ignition is turned on, when the engine is cranking, and when the engine is running, to
supply power to the fuel pump.

CONSTRUCTION

A 12 Volt multiple coil relay in a common sealed housing.

Fuel Pump Relay|Testing and Inspection > < Testing For a Short to Ground With a Short Circuit Locator|Page 5469