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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) 13A-301 DTC SET CONDITIONS <Circuit continuity − shorted high> Logic Flow Chart Check Condition • Engine is running. Judgement Criterion • The coil current is 4.5 ampere or more with the injector driving for 2 seconds. . FAIL-SAFE AND BACKUP FUNCTION • None . OBD-II DRIVE CYCLE PATTERN Refer to Diagnostic Function − OBD-II Drive Cycle − Pattern 23 . . TROUBLESHOOTING HINTS (The most • No. 1 cylinder injector failed. harness damage or connector damage. • ECM failed. DIAGNOSIS Required Special Tools: • MB991958: Scan Tool (M.U.T.-III Sub Assembly) • MB991824: V.C.I. • MB991658: Test Harness Good Malfunction Current >= 4.5A End Yes No No No AK604332 Start Yes Yes Continuous failure for 2secs Monitoring |