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Home >> Lexus >> 1995 >> SC 400 >> Repair and Diagnosis >> External Pages >> Different car >> Section 8 (Engine Controls - System/Component Tests) >> Fuel System >> Fuel Pump Operation (Using Fuel Pump Connector)
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Fuel Pump Operation (Using Fuel Pump Connector)

WARNING: This page is about a different car, the 1995 Lexus SC 300. However, it is still accessible from the selected car via links, so may be relevant.
WARNING: To prevent sparking near the fuel tank in the following procedure, make final connections at test battery.
CAUTION: To prevent fuel pump damage, DO NOT  operate fuel pump for more than 10 seconds.
CAUTION: Fuel pump and fuel sending unit are separate components. Fuel pump is accessible through vehicle interior, but fuel pump connector is accessible through luggage compartment (near fuel sending unit).

Remove trim cover from behind rear seat in luggage compartment. Disconnect 2-pin fuel pump connector (NOT the sending unit connector). On female side of fuel pump connector, ground White/Black wire terminal. Apply battery voltage across other terminal. Fuel pump is operating if pulsations can be felt in fuel pressure hose or if noise from fuel return can be heard.