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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE> 13B-561 STEP 1. Check fuel gauge. YES : Go to Step 2. − Trouble Symptom Chart . STEP 2. Check the trouble symptoms. Diagnostic Function − OBD-II Drive Cycle − Pattern 22 (2) Check the diagnostic trouble code (DTC). YES : Replace the ECM. When the ECM is replaced, register the ID code. Refer to GROUP 42B, Diagnosis or GROUP 42C, Diagnosis − ID Codes Registration Judgment Table <Vehicles with NO : It can be assumed that this malfunction is intermittent. Refer to GROUP 00, How to Use − How to Cope with Intermittent Malfunctions . STEP 3. Test the OBD-II drive cycle. Diagnostic Function − OBD-II Drive Cycle − Pattern 22 (2) Check the diagnostic trouble code (DTC). YES : Retry the troubleshooting. DTC P0463: Fuel Level Sensor <FWD> or Fuel Level Sensor (main) <AWD> Circuit High Input . TECHNICAL DESCRIPTION • The fuel level sensor converts the rest of the fuel to a voltage and sends it to the combination • The combination meter sends the data regarding the rest of the fuel to the ECM. • The ECM checks whether this data is within a specified range. . DESCRIPTIONS OF MONITOR METHODS An open circuit is detected while monitoring the fuel . MONITOR EXECUTION Continuous . MONITOR EXECUTION CONDITIONS Other Monitor (There is no temporary DTC stored in memory for the item monitored below) • Not applicable Sensor (The sensor below is determined to be normal) • Not applicable . |