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.
Chart A-5, No-Start Condition (Fuel Injector Circuit Check): Notes
When fuel injector solenoid coil is energized by ECM, it will activate injector plunger and pressurized fuel will be injected into throttle body. Fuel pump will operate as long as engine is cranking and ECM is receiving ignition reference pulses.
- Checks to see if ECM is controlling the fuel injector signals.
- Checks fuel injector for correct resistance.
- Checks for an open or short to ground in Red or Yellow wire to ECM. Checks for faulty ECM.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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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