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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE> 13A-714 LOGIC FLOW CHARTS (Monitor Sequence) . DTC SET CONDITIONS Check Conditions • 2 seconds or more have passed since the start- ing sequence was completed. • The fuel temperature is 36°C (97°F) or less. • Remaining fuel level is 85% or less when the engine is started. Judgment Criteria • The fuel tank differential pressure sensor output voltage remains 4.8 volt or greater for 5 seconds. . OBD-ll DRIVE CYCLE PATTERN Refer to Diagnostic Function − OBD-ll Drive Cycle − Procedure 1 − Evaporative Emission System Leak Monitor . TROUBLESHOOTING HINTS (THE MOST • Malfunction of the fuel tank differential pressure sensor. • Open or shorted fuel tank differential pressure sensor circuit. • Malfunction of the PCM. . AC401447 RANGE CHECK - MIN. / MAX. NO YES CONTINUOUS FAILURE FOR 5 SECS START END NO NO NO YES YES
YES MALFUNCTION
GOOD MONITORING
CONDITIONS
OUTPUT VOLTAGE
< 1.0V OUTPUT VOLTAGE
> 4.8V |