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.
Description And Operation: Notes
DESCRIPTION
The ignition control system contains the following components:
| 1. | Refer to IGNITION COIL . |
| 2. | Refer to CAMSHAFT POSITION SENSOR . |
| 3. | Refer to POWERTRAIN CONTROL MODULE (PCM) . |
| 4. | Refer to KNOCK SENSOR . |
| 5. | Refer to IGNITION NOISE CAPACITOR . |
| - | Refer to SPARK PLUG located below the ignition coil in the cylinder head, not shown. |
| - | Refer to GLOW PLUG - DIESEL APPLICATIONS ONLY, not shown. |
This engine uses a fixed ignition timing system. Basic ignition timing is not adjustable. All spark advance is determined by the PCM.
The ignition system is referred to as coil on plug. The coil on plug ignition system utilizes an ignition coil for every cylinder. The ignition coils are mounted directly over each spark plug.
OPERATION
The crankshaft position sensor and camshaft position sensor are hall effect devices. The camshaft position sensor and crankshaft position sensor generate square wave pulses that are inputs to the PCM. The PCM determines engine position from these sensors. The PCM calculates injector sequence and ignition timing from crankshaft and the camshaft position.
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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