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.
Circuit Description
Battery voltage is supplied to ignition coil when ignition switch is in RUN or START position. Ignition control module toggles primary winding of ignition coil in order to induce a high voltage in the secondary windings of ignition coil. PCM commands ignition control module based on numerous inputs, including camshaft position sensor. High voltage induced in secondary windings of ignition coil is applied through distributor cap and rotor to spark plugs.
NO RELATED
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.