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MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <2.4L> 13A-313 CIRCUIT OPERATION • A battery positive voltage is applied on the data COMMENT • The cause is probably a defect in power supply TROUBLESHOOTING HINTS (The most likely • Malfunction of the data link connector. • Damaged harness wire. DIAGNOSIS STEP 1. Check the power supply voltage at data link • Voltage should be battery positive voltage. Q: Is the voltage normal? YES : Go to step 2. intermediate connector for damage, and repair or ). If intermediate connectors are in good condition, repair harness wire STEP 2. Check the continuity at data link connector C-23. • Should be less than 2 ohm. Q: Is the continuity normal? YES : Replace the scan tool. Then confirm that the malfunction symptom is eliminated. NO : Repair harness wire between data link connector C- 23 terminal 4, 5 and ground because of open circuit or AK000631AB CONNECTOR:C-78 AK000632 AB CONNECTOR:C-66 AKX01430 1 2 3 4 121314 6 5 7 8 16 15 11 10 9 C-23 HARNESS AE AKX01431 AKX01431 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 C-23 HARNESS AD |