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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE> 13B-263 STEP 9. Check for short circuit to ground between YES : Replace the ECM or PCM. Then go to Step 18. STEP 10. Check the power supply voltage at camshaft side. (2) Turn the ignition switch to the "ON" position. • 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 12. STEP 11. Check connector A-21X at MFI relay for damage. YES : Repair harness wire between MFI relay connector A- 21X terminal 1 and camshaft position sensor NO : Repair or replace it. Refer to GROUP 00E, Harness Connector Inspection ( ). Then go to Step 18. AK000217AB AK000217 CONNECTOR : B-22 AK000225 CONNECTOR : C-58<M/T>, C-55<A/T> C-55 C-58 PCM<A/T> ECM<M/T> AI AK000252AB B-22 HARNESS 7 6 5 4 3 2 1 AK000226 AK000226AB CONNECTOR : A-21X MFI RELAY |