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.
1991 Toyota Camry Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Circuit Opening Relay
Relay is located under ECU, under center of dash. To check circuit opening relay, See Fig 1 and Fig 2 . Replace relay if continuity is not as specified.
NOTE:
During cranking, there should be 12 volts present at FP terminal of circuit opening relay. This is the fuel pump (or fuel pump relay) line. See appropriate WIRING DIAGRAMS article for wire color.
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.