lexus Workshop Repair Guides

Lexus Workshop Service and Repair Manuals

Fuel Pump Relay|Locations|Page 75 > < Fuel Pump Relay|Locations|Page 73
Page 1
background image

Fuel Pump Relay: Description and Operation

Circuit Opening Relay

PURPOSE

The circuit opening relay provides power to the fuel pump.

LOCATION

Mounted behind the dash, above the glove compartment.

CONSTRUCTION

The relay consists of a single set of contacts controlled by two separate coils.

OPERATION

One coil is energized when the key is turned to the start position. The relay contacts close and power is supplied to the fuel pump for starting.
Once the engine starts the air flow sensor grounds the other coil which continues to hold the contacts closed after the key is released to the run
position. 

Fuel Pump Relay|Locations|Page 75 > < Fuel Pump Relay|Locations|Page 73