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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.0L> 13B-879 DTC SET CONDITIONS Logic Flow Chart . Check Conditions • 2 seconds or more have passed since the start- ing sequence was completed. • Battery positive voltage is higher than 8 volts. Judgement Criteria • Barometric pressure sensor output has continued to be 49 kPa (14.5 in.Hg) or lower approximately . OBD-ll DRIVE CYCLE PATTERN − OBD-ll Drive Cycle − Procedure 6 . . TROUBLESHOOTING HINTS (The most likely • Barometric pressure sensor failed. • Open or shorted barometric pressure sensor cir- cuit harness damage, or connector damage. • ECM failed. <M/T> • PCM failed. <A/T> DIAGNOSIS Required Special Tools: • MB991958: Scan Tool (MUT-III Sub Assembly) • MB991824: V.C.I. • MB991827: USB Cable • MB991911: Main Harness B START END NO NO NO YES YES YES MALFUNCTION GOOD NO YES AK301456 MONITORING CONDITIONS BAROMETRIC PRESSURE < 50kPa (14.8in.Hg) BAROMETRIC PRESSURE > 113kPa (33.4in.Hg) CONTINUOUS FAILURE FOR 10secs |