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MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <2.4L> 13A-141 STEP 4. Check harness connector A-21X at the MFI relay YES : Repair harness wire between MFI relay connector A- 21X terminal 1 and heated oxygen sensor (rear) NO : Repair or replace it. Refer to GROUP 00E, Harness Connector Inspection ( ). Then go to Step 12. STEP 5. Check the power supply voltage at PCM connector backprobing. • Voltage should be battery positive voltage. (4) Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the voltage normal? YES : Go to Step 8. STEP 6. Check connector C-39 at PCM for damage. YES : Go to Step 7. Connector Inspection ( ). Then go to Step 12. AK000555AB CONNECTOR : A-21X MFI RELAY AK000295 C-39 CONNECTOR 1 24 2 10 11 3 12 4 13 5 19 6 20 21 7 22 8 23 14 1516 17 30 18 31 AC AK000280 CONNECTOR : C-39 PCM AW |