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.
Waveform 6
- Igniter IGT signal (from ECM to igniter)
- Igniter IGF signal (from igniter to ECM)WAVEFORM 6 REFERENCE CHART
ECM Terminal Names (a) Between IGT (1 to 6) and E1 ECM Terminal Names (b) Between IGF1 and E1 Tester Ranges 2 V/DIV, 20 msec./DIV Conditions Idling HINT:
The wavelength becomes shorter as the engine rpm increases.
Use the Manual With the Right Hardware
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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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