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.
Diagnostic Procedure
- CHECK ENGINE START
Turn ignition switch OFF, and restart engine. Is engine running?
Yes or No
- CHECK OVERALL FUNCTION
With CONSULT-II
- Perform "POWER BALANCE" in "ACTIVE TEST" mode with CONSULT-II.
- Make sure that all circuits do not produce a momentary engine speed drop.
OK or NG
- OK : INSPECTION END
- NG : GO TO 12.
- CHECK OVERALL FUNCTION
Without CONSULT-II
- Let engine idle.
- Read the voltage signal between ECM terminals 61, 62, 80, 81 and ground with an oscilloscope.
- Verify that the oscilloscope screen shows the signal wave as shown below in Fig 2.NOTE: The pulse cycle changes depending on rpm at idle.
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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