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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE> 13B-449 STEP 4. Measure the sensor supply voltage at ECM ECU check harness special tool MB992110 between the (2) Turn the ignition switch to the "ON" position. (3) Measure the voltage between terminal No. 9 and ground. • Voltage should be battery positive voltage. (4) Turn the ignition switch to the "LOCK" (OFF) position. present? sensor connector B-119 (terminal No. 1) and the ECM NO : Go to Step 5. STEP 5. Check for short circuit to ground between the and the ECM connector B-10. (2) Check for the crankshaft position sensor connector B-119 (terminal No. 1) and ground. • Not continuity. Q: Is the harness wire in good condition? YES : Replace the ECM. When the ECM is replaced, register the ID code. Refer to GROUP 42B, Diagnosis or GROUP 42C, Diagnosis − ID Codes Registration Judgment Table <Vehicles with NO : Repair it. Refer to GROUP 00E, Harness Connector . Then go to Step 9. AK700249 ECM AB Body side harness MB992110 AK700563 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 Special tool 64-pin AK703884 3 2 1 AB B-119 harness |