1.Inspection START
Turn ignition switch OFF, and restart engine.
Does the engine start?
YES-1 >> With CONSULT-III: GO TO 2.
YES-2 >> Without CONSULT-III: GO TO 3.
NO >> Go to See: Diagnosis Procedure. 2.CHECK IGNITION SIGNAL FUNCTION With CONSULT-III
Perform "POWER BALANCE" in "ACTIVE TEST" mode with CONSULT-III.
Check that each circuit produces a momentary engine speed drop. Is the Inspection result normal?
YES >> Inspection END
NO >> Go to See: Diagnosis Procedure. 3.CHECK IGNITION SIGNAL FUNCTION Without CONSULT-III
Let engine idle.
Read the voltage signal between ECM harness connector terminals with an oscilloscope.
NOTE: The pulse cycle changes depending on rpm at idle.