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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE> 13A-351 STEP 1. Using scan tool MB991502, read the diagnostic CAUTION To prevent damage to scan tool MB991502, always turn the Q: Is the DTC is output? YES : Refer to Diagnostic Trouble Code Chart ( ). NO : Go to Step. 2. STEP 2. Check the continuity at combination meter side. (2) Check for the continuity between terminal 41 and ground. • Should be open loop. Q: Is the continuity normal? YES : Replace the ECM or PCM. Then confirm that the malfunction symptom is eliminated. NO : Check harness connectors C-28 at the intermediate connector for damage, and repair or replace as ). If intermediate connectors is in good condition, repair harness wire between INSPECTION PROCEDURE 5: Cranks, Won't Start Cranks, Won't Start Circuit • Refer to, Ignition circuit system ( ). CIRCUIT OPERATION • Refer to, Ignition circuit system ( ). COMMENT • In cases such as the above, the cause is TROUBLESHOOTING HINTS (The most likely • Malfunction of the ignition system. • Malfunction of the fuel pump system. • Malfunction of the injector system. • Malfunction of the ECM <M/T> or PCM <A/T>. • Contaminated fuel. AKX01177 16 PIN MB991502 AB AK000445AC 56 55 54 53 52 5150 49 48 47 46 45 44 43 42 41 C-41 HARNESS |