Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1994 Mazda RX-7 AutomaticFACTORY OEM SERVICE PROCEDURE
Fuel Pump Circuit
- Turn ignition on. On MPV connect terminals of Yellow fuel pump check connector with a jumper wire. See FUEL PUMP CHECK CONNECTOR (YELLOW) LOCATIONS table. Attach jumper wire to test connector terminal Fp and to ground in the diagnostic connector, next to battery.
- Listen for fuel pump operating sound. If there is no sound, check main fuse, circuit operating relay, fuel pump and all electrical connections. PCM grounds circuit opening relay and operates fuel pump whenever distributor or crank angle sensor signals are present.
- If circuit opening relay does not work, proceed to SYSTEM/COMPONENT TESTS article in the ENGINE PERFORMANCE section or TESTS W/CODES article in the ENGINE PERFORMANCE section.
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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