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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE> 13A-303 STEP 6. Check connector A-21X at MFI relay for damage. YES : Repair harness wire between MFI relay connector A- 21X terminal 1 and idle air control motor connector B- NO : Repair or replace it. Refer to GROUP 00E, Harness Connector Inspection ( ). Then go to Step 14. STEP 7. Check the power supply voltage at ECM connector T>. (2) Measure the voltage between terminal (4, 5, 17, 18) <M/T> or (14, 15, 28, 29) <A/T> and ground by backprobing. • The voltage is 1V or lower for approximately 3 seconds, (3) Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the voltage normal? YES : Go to Step 10. STEP 8. Check connector C-49 at ECM <M/T> or connector YES : Go to Step 9. Connector Inspection ( ). Then go to Step 14. AK000226 AK000226AB CONNECTOR : A-21X MFI RELAY AK000306 10 1 2 3 4 5 6 7 8 9 1112 13 141516171819 20 2122 23242526 AC <M/T> C-49 CONNECTOR AK000307 1 2 3 4 5 6 7 8 9 10 11 1213 141516 17 1819 20 21 2223 24 25 2627 2829 30 3132 33 3435 AD C-50 CONNECTOR <A/T> AK000280 C-49,C-50 ECM<M/T> CONNECTORS:C-49<M/T>,C-50<A/T> BC |