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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) 13A-801 DIAGNOSIS STEP 1. Check harness connector C-90 at PCM for YES : Go to Step 2. Connector Inspection . Then confirm that the malfunction symptom is eliminated. STEP 2. Measure the output voltage at PCM harness side side. (2) Start the engine and run at idle. (4) Measure the voltage between terminal No. 61 and ground. • If atmospheric air temperature is 15°C (59°F) or less, the voltage should measure 1 volt or less. • If atmospheric air temperature is 18°C (64.4°F) or more, the voltage should measure battery positive voltage. (5) Turn the A/C switch "OFF." YES : Replace the PCM. Then confirm that the malfunction symptom is eliminated. NO : Refer to GROUP 55, Introduction to Heater, Air Conditioning and Ventilation Diagnosis AK103762 42 43 48 49 50 51 52 53 54 55 56 57 46 45 44 58 59 60 61 62 63 64 65 66 47 41 AB CONNECTOR: C-90 C-90(GR) HARNESS CONNECTOR: AK103762 42 43 48 49 50 51 52 53 54 55 56 57 46 45 44 58 59 60 61 62 63 64 65 66 47 41 AB CONNECTOR: C-90 C-90(GR) HARNESS CONNECTOR: AKX01505AN C-90 HARNESS CONNECTOR: 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 |