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.
Checking ICM Control
If voltage was less than described in CHECK C1, C2 & C3 AT COIL PACK (RUNNING) or CHECK C1, C2 & C3 AT COIL PACK (CRANKING), replace coil pack. If voltage was greater than described, check circuits between coil pack and ICM module for opens or shorts. If circuits okay, replace ICM. Remove all test equipment, and reconnect all components. Clear Continuous Memory, and check for fault codes.
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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.