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.
Electronic Ignition System
- All models use a distributorless high data rate electronic ignition system. Diagnosis of this ignition system requires some or all of the following equipment:
- High impedance DVOM.
- EDIS Diagnostic Harness (49 UN01 057).
- EEC 60-pin breakout box (49 UN01 058).
- 104-pin breakout box (49 UN01 130).
- New Generation Star Scan Tester (or OBD-II equivalent).
- Perform self diagnostic testing. See appropriate articles;
Record all Diagnostic Trouble Codes (DTCs) and repair first code displayed first. Proceed to ELECTRONIC IGNITION DIAGNOSTIC CHARTS. See Fig 1 -Fig 11 .
- If no self-diagnostic DTCs exist, proceed to NO START (NO SPARK) DIAGNOSTIC CHART for test procedures.
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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