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MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.0L> 13B-373 TECHNICAL DESCRIPTION • The manifold differential pressure sensor outputs • The PCM checks whether the voltage output by DTC SET CONDITIONS Check Conditions • Eight minutes or more have passed after starting ° C (32 ° F) when starting. • Engine coolant temperature is higher than 45 ° C (113 ° F). • Intake air temperature is higher than 5 ° C (41 ° F). • Volumetric efficiency is between 30 and 45 Judgment Criteria • Manifold differential pressure sensor output or • Manifold differential pressure sensor output Check Conditions • Eight minutes or more have passed after starting ° C (32 ° F) or more when starting. • Engine coolant temperature is higher than 45 ° C (113 ° F). • Intake air temperature is higher than 5 ° C (41 ° F). • Volumetric efficiency is lower than 30 percent. Judgment Criteria • Manifold differential pressure sensor output Check Conditions • Eight minutes or more have passed after starting ° C (32 ° F) or more when starting. • Engine coolant temperature is higher than 45 ° C (113 ° F). • Intake air temperature is higher than 5 ° C (41 ° F). • Volumetric efficiency is higher than 70 percent. Judgment Criteria • Manifold differential pressure sensor output TROUBLESHOOTING HINTS (The most likely • Manifold differential pressure sensor failed. • Open or shorted manifold differential pressure • PCM failed. DIAGNOSIS Required Special Tools |