SFI SYSTEM(for Rear Air Fuel Ratio Sensor), Diagnostic DTC:P24521C

DTC Code DTC Name
P24521C Particulate Filter Pressure Sensor "A" Circuit Voltage Out of Range

DESCRIPTION

Tech Tips

This DTC is applicable to w/o Canister Pump Module only.

Refer to DTC P244B00.

Click here

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P24521C Particulate Filter Pressure Sensor "A" Circuit Voltage Out of Range Differential pressure sensor value at intake air flow of 65 gm/sec* or higher is below 0 kPa for 5 seconds or more (1 trip detection logic).

  • Incorrect vacuum transmitting hose assembly

  • Differential pressure sensor

 Does not come on DTC stored SAE Code: P2453

*: The total value of Mass Air Flow Sensor.

MONITOR DESCRIPTION

When the differential pressure sensor output is output with the positive and negative values reversed, incorrect connection of the differential pressure sensor and vacuum transmitting hose assembly is judged and the ECM stores a DTC.

MONITOR STRATEGY

Frequency of Operation Continuous

CONFIRMATION DRIVING PATTERN


  1. B007XIEE60

  2. Connect the GTS to the DLC3.

  3. Turn the engine switch on (IG).

  4. Turn the GTS on.

  5. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  6. Turn the engine switch off and wait for at least 30 seconds.

  7. Turn the engine switch on (IG). [A]

  8. Turn the GTS on.

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

  10. With the shift position in 2nd, drive the vehicle at 60 to 80 km/h (37 to 50 mph) for 10 seconds or more [C].

    CAUTION:

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

  11. Turn the GTS on.

  12. Enter the following menus: Powertrain / Engine / Trouble Codes [D].

  13. Read the 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.

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

  15. Input the DTC: P24521C.

  16. 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

    Tech Tips


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

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

    • If the judgment result is INCOMPLETE, perform steps [C] and [D] again.

WIRING DIAGRAM

Refer to DTC P244B00.

Click here

CAUTION / NOTICE / HINT

Tech Tips

Read Freeze Frame Data using the GTS. The ECM records vehicle and driving condition information as Freeze Frame Data the moment a DTC is stored. When troubleshooting, Freeze Frame Data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE


  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P24521C)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

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

    5. Read the DTCs.


      Powertrain > Engine > Trouble Codes
      Result
      Result Proceed to
      DTC P24521C is output A
      DTC P24521C and other DTCs are output B

      Tech Tips

      If any DTCs other than P24521C are output, troubleshoot those DTCs first.


    B

    GO TO DTC CHART Click here

    A

  2. CHECK BLOCKAGE OF VACUUM TRANSMITTING HOSE ASSEMBLY AND VACUUM PIPE (DIFFERENTIAL PRESSURE SENSOR - VACUUM PIPE)

    B007YM0C01
    *1 Differential Pressure Sensor *2 Vacuum Transmitting Hose Assembly
    *3 No. 1 Vacuum Pipe - -

    1. Check if vacuum transmitting hose assembly between the differential pressure sensor and the vacuum pipe is correct.

    2. Check that there is no exhaust gas leak between the differential pressure sensor and the vacuum pipe.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE MALFUNCTIONING PARTS

    OK

  3. INSPECT DIFFERENTIAL PRESSURE SENSOR


    1. Inspect the differential pressure sensor.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE DIFFERENTIAL PRESSURE SENSOR Click here

    OK

  4. CLEAR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Clear the DTCs.


      Powertrain > Engine > Clear DTCs

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

      Result
      Proceed to
      NEXT

    NEXT

  5. CHECK WHETHER DTC OUTPUT RECURS (DTC P24521C)


    1. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

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

    3. Read the pending DTCs.


      Powertrain > Engine > Trouble Codes
      OK
      DTCs are not output
      Result
      Proceed to
      NEXT

    NEXT

    END

  6. REPLACE DIFFERENTIAL PRESSURE SENSOR


    1. Replace the differential pressure sensor.

      Click here

    2. Start the engine and allow it to idle until the engine coolant temperature reaches 75°C (167°F) or higher (A).

    3. Turn the engine switch off and wait for 30 seconds or more (B).

    4. Repeat the above procedures (A) and (B) 3 times.

      Tech Tips

      Procedures (A) and (B) must be repeated 3 times to complete the differential pressure sensor learning process.

      Result
      Proceed to
      NEXT

    NEXT

    END