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Home >> Toyota >> 1993 >> MR2 2.2 S, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing - 4-CYL >> Fuel System >> Fuel Pump Control Circuit >> Fuel Pump Relay & Fuel Pump Resistor MR2 Turbo)
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Fuel Pump Relay & Fuel Pump Resistor MR2 Turbo)

Fuel pump relay receives voltage from circuit opening relay and operates fuel pump. Fuel pump operating speed may be varied by Engine Control Module (ECM). When ECM grounds fuel pump relay, relay contacts close, and voltage is supplied through fuel pump resistor, to fuel pump. This changes fuel pump operating speed.

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