Diagnosis Procedure

1. Start engine and let it idle.
2. Listen for an intake air leakage after the mass air flow sensor.

Is intake air leakage detected? 

YES: Discover air leakage location and repair.

NO: GO TO 2.

1. Stop engine.
2. Replace ECM.
3. Go to "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT: SPECIAL REPAIR REQUIREMENT ".

INSPECTION END