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
The electronic ignition system uses an individual ignition coil for each cylinder. The Powertrain Control Module (PCM) controls the ignition operation through eight individual Ignition Control (IC) circuits. Each bank of four ignition coils is connected to the PCM, power, or ground by the following circuits
- Low reference
- Chassis ground
- Ignition 1 voltage
- The appropriate IC circuit
The PCM triggers an ignition coil by grounding the appropriate IC circuit using information from the Crankshaft Position (CKP) and Camshaft Position (CMP) sensors.
NO RELATED
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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.