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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE> 13A-191 STEP 4. Check harness connector B-10 at ECM for YES : Go to Step 5. Connector Inspection P.00E-2 . Then go to Step 10. STEP 5. Measure the sensor supply voltage at ECM ECU check harness special tool MB992110 between the (2) Disconnect the engine coolant temperature sensor connector B-09. (3) Turn the ignition switch to the "ON" position. (4) Measure the voltage between terminal No. 26 and ground. • Voltage should be between 4.5 and 4.9 volts. (5) Turn the ignition switch to the "LOCK" (OFF) position. YES : Repair harness wire between engine coolant temperature sensor connector B-09 (terminal No. 1) NO : Replace the ECM. When the ECM is replaced, register the ID code. Refer to GROUP 42B, Diagnosis with KOS> P.42B-15 or GROUP 42C, Diagnosis − ID Codes Registration Judgment Table <Vehicles with P.42C-10 . Then go to Step 10. AK604040 ECM AB Body side harness MB992110 AK604182 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 AB Power plant ECU |