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Dan, Technician
Category: Toyota
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Experience:  Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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1994 Toyota Camry: I check the fuel pump..wiring

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How can I check the fuel pump on a 1994 Toyota Camry to see if it is the pump or a wiring problem

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Do a fuel pressure test if low check to see if the circuit opening relay clicks when key is turned into crank position if so wiring is likely ok. You can access fuel pump connector the white/black wire needs ground and light blue/black wire should have power. Here is a wire diagram, let me know if you have questions. Thanks

Fuel Pressure
Pressure 1 (PSI)Pressure 2 (PSI)
38.0 - 44.0Y25133.0 - 38.0Y252
Y251: Pressure (PSI) is measured at cold start injector with pressure regulator vacuum disconnected.
Y252: Pressure (PSI) is measured at cold start injector with pressure regulator vacuum connected.

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