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.
Ignition Control Module
Check ignition coil, ECM/PCM and high-tension lead connections. Check secondary coil winding and high-tension lead resistance. Measure voltage between ground and appropriate ECM/PCM terminals. See ECM/PCM TERMINAL IDENTIFICATION table. If all measurements are within specification, and misfire still occurs, replace distributor or ignition coil.
| ECM/PCM Wire Color (1) | Closed Throttle Volts | WOT Volts | |||
|---|---|---|---|---|---|
| 2.0L A/T | |||||
| Green (26) | B+ | B+ | |||
| Red (85) | 0 Or 5 | 6.5 | |||
| 2.0L M/T | |||||
| Orange (4F) | 0 Or 5 | 2 | |||
| Yellow/White (4G) | 0 Or 5 | .9-1.3 | |||
| Yellow/Red (4N) | 0 | .3 | |||
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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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