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TROUBLESHOOTING MULTIPORT FUEL INJECTION (MPI) 13A-283 SYMPTOM PROCEDURES Inspection Procedure 1: Communication with Engine-ECU <M/T> or Engine-A/T-ECU <A/T> is Not OPERATION • There is data communication between diagnosis connector output terminal (terminal No. 7) and 20 Overheating 21 Abnormal rotation of fan motor 22 Engine-ECU <M/T> or engine-A/T-ECU <A/T> power supply, engine control 23 Fuel pump system 24 Fan control relay system 25 A/C compressor relay system 26 Ignition circuit system Inspection Trouble symptom Reference AK305574 1 2 3 4 5 6 12 11 10 1516 14 13 9 7 8 61 858687 8889 62 6364 C-126 MU803797 15 74 7 C-17 Diagnosis connector circuit AB Wire colour code C-112 (MU803804) Engine-ECU <M/T> or Diagnosis connector O-L O-L |