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TROUBLESHOOTING MULTIPORT FUEL INJECTION (MPI) <4G1> 13B-49 STEP 8. Check harness between A-121 (terminal • Check output line for open circuit. Q: Is the check result normal? YES : Go to Step 9 . NO : Repair. STEP 9. M.U.T.-III data list • Item 21: Engine coolant temperature sensor OK: When the engine is cold: Nearly equal to ambi- ent temperature (atmospheric temperature) When the engine is hot: 80 − 120°C Q: Is the check result normal? YES : Intermittent malfunction (Refer to GROUP 00 − How to Use Troubleshooting/Inspection Service Points − How to Cope with Intermittent Malfunctions ). NO : Replace engine-ECU. STEP 10. Perform resistance measurement at • Disconnect connector and measure at harness side. • Resistance between terminal No. 2 and earth. OK: Continuity (2 Ω or less) Q: Is the check result normal? YES : Go to Step 13 . NO : Go to Step 11 . AK402085 1 2 AC A-121(B) Connector: A-121 Harness side connector AK402745 6 4 2 5 3 1 9 7 8 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 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 L AF A-114 Connector: A-114 Harness side connector Engine-ECU Battery AK402085 1 2 AC A-121(B) Connector: A-121 Harness side connector Main Index Group TOC |