|
|
Content .. 1102 1103 1104 1105 ..
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE> 13B-716 DTC SET CONDITIONS Check Conditions • Intake air temperature is greater than 5°C (41°F). • Engine speed is 1,600 r/min or greater. • Volumetric efficiency is between 20 and 70 per- cent. Judgment Criteria • When the evaporative emission purge solenoid is off, the fuel differential pressure sensor output Check Conditions • Intake air temperature is between 5°C (41°F) and 45 °C (113°F) or greater. • Engine speed is 1,600 r/min or greater. • Volumetric efficiency is between 20 and 70 per- cent. Judgment Criteria • When the evaporative emission purge solenoid valve is fully operational (100 percent ratio), the . 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. • A damaged harness in the fuel tank differential pressure sensor circuit. • Malfunction of the PCM. . OVERVIEW OF TROUBLESHOOTING • DTC P0450 can be set by a faulty fuel tank differ- ential pressure sensor or related circuit, or PCM • To check for system blockage, do a performance test which uses a mechanical vacuum gauge and |