SFI SYSTEM, Diagnostic DTC:P0461, P0462, P0463

DESCRIPTION

The signal output from the sender gauge assembly installed in the fuel tank is converted to a CAN communication signal using the combination meter assembly, and this signal is input into the ECM as a remaining fuel signal.

MONITOR DESCRIPTION

The ECM uses the fuel sender gauge to monitor the amount of furl. There are several checks that the ECM performs to confirm the proper operation of the fuel sender gauge.

P0461

• If the fuel sender gauge variation is lower than the estimated fuel consumption calculated from the fuel injection quantity and the engine speed, the ECM interprets this as a malfunction in the fuel sender gauge, and stores the DTC.

P0462, P0463

• If an open or short in the fuel sender gauge signal line is detected, the ECM interprets this as a malfunction in the fuel sender gauge, and stores the DTC.

CONFIRMATION DRIVING PATTERN

• P0461
  

  1. Connect the GTS to the DLC3.

  2. Turn the ignition switch to ON and turn the GTS on.

  3. Clear DTCs (even if no DTCs are stored, perform the clear DTC operation) Click here.

  4. Turn the ignition switch off and wait for at least 30 seconds.

  5. Turn the ignition switch to ON and turn the GTS on.

  6. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.

  7. Drive the vehicle and consume more than 30 liters (31.7 US qts) of the fuel.

     CAUTION:

     When performing the confirmation driving pattern, obey all speed limits and traffic laws.

  8. Enter the following menus: Powertrain / Engine / Trouble Codes.

  9. Read pending DTCs.

     Tech Tips

     
     

     • If a pending DTC is output, the system is malfunctioning.

     • If a pending DTC is not output, perform the following procedure.

  10. Enter the following menus: Powertrain / Engine / Utility / All Readiness.

  11. Input the DTC: P0461.

  12. Check the DTC judgment result.

      GTS Display	Description
      NORMAL	DTC judgment completed System normal
      ABNORMAL	DTC judgment completed System abnormal
      INCOMPLETE	DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions
      N/A	Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

      Tech Tips

      
      

      • If the judgment result shows NORMAL, the system is normal.

      • If the judgment result shows ABNORMAL, the system has a malfunction.

  13. If the test result is INCOMPLETE or N/A and no DTC is output, perform a universal trip and check for permanent DTCs Click here.

      Tech Tips

      
      

      • If a permanent DTC is output, the system is malfunctioning.

      • If no permanent DTC is output, the system is normal.

• P0462, P0463
  
  1. 

  2. Connect the GTS to the DLC3.

  3. Turn the ignition switch to ON and turn the GTS on.

  4. Clear DTCs (even if no DTCs are stored, perform the clear DTC operation) Click here.

  5. Turn the ignition switch off and wait for at least 30 seconds.

  6. Turn the ignition switch to ON and turn the GTS on.

  7. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher .

  8. With the vehicle stationary, depress the accelerator pedal and maintain an engine speed of between 2500 and 3000 rpm for 40 seconds or more [A].

  9. Drive the vehicle at 10 km/h (6.25 mph) or more for 1 minute or more [B].

     CAUTION:

     When performing the confirmation driving pattern, obey all speed limits and traffic laws.

  10. Enter the following menus: Powertrain / Engine / Trouble Codes.

  11. Read pending DTCs.

      Tech Tips

      
      

      • If a pending DTC is output, the system is malfunctioning.

      • If a pending DTC is not output, perform the following procedure.

  12. Enter the following menus: Powertrain / Engine / Utility / All Readiness.

  13. Input the DTC: P462 or P0463.

  14. Check the DTC judgment result.

      GTS Display	Description
      NORMAL	DTC judgment completed System normal
      ABNORMAL	DTC judgment completed System abnormal
      INCOMPLETE	DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions
      N/A	Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

      Tech Tips

      
      

      • If the judgment result shows NORMAL, the system is normal.

      • If the judgment result shows ABNORMAL, the system has a malfunction.

  15. If the test result is INCOMPLETE or N/A and no DTC is output, perform a universal trip and check for permanent DTCs Click here.

      Tech Tips

      
      

      • If a permanent DTC is output, the system is malfunctioning.

      • If no permanent DTC is output, the system is normal.

WIRING DIAGRAM

PROCEDURE

1. CHECK ANY OTHER DTCS OUTPUT

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the ignition switch to ON.

   3. Turn the GTS on.

   4. Enter the following menus: Powertrain / Engine / Trouble Codes.

   5. Read the DTCs.

      Result
      Result Proceed to DTC P0461, P0462 or P0463 is output A DTC P0461, P0462 or P0463 and other DTCs are output B

   
   

   A

   GO TO FUEL GAUGE MALFUNCTION Click here

   B

   GO TO DTC CHART Click here