SFI SYSTEM(for Rear Air Fuel Ratio Sensor), Diagnostic DTC:P24522A

DTC Code DTC Name
P24522A Particulate Filter Pressure Sensor "A" Signal Stuck In 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
P24522A Particulate Filter Pressure Sensor "A" Signal Stuck In Range When engine switch on (IG), the differential pressure sensor output learning value at atmospheric pressure is above or below the specified value for 1 second or more (1 trip detection logic).

  • Open or short in differential pressure sensor circuit

  • Differential pressure sensor

  • Vacuum transmitting hose assembly

  • No. 1 vacuum pipe

 Does not come on DTC stored SAE Code: P2453

MONITOR DESCRIPTION

The differential pressure sensor output learning value is updated when engine switch off after completely engine warmed up drive cycle. The sensor output should show its neutral (zero) value at the condition. The sensor output stuck in range is judged when the learning value is below or above the specified value at engine switch on (IG) after the learning value updated.

MONITOR STRATEGY

Frequency of Operation Continuous

CONFIRMATION DRIVING PATTERN


  1. Connect the GTS to the DLC3.

  2. Turn the engine switch on (IG).

  3. Turn the GTS on.

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

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

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

  7. Idle the engine for 1 minute or more.

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

  9. Turn the engine switch on (IG).

  10. Turn the GTS on.

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

  12. 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.

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

  14. Input the DTC: P24522A.

  15. 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.

WIRING DIAGRAM


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 P24522A)


    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 P24522A is output A
      DTC P24522A and other DTCs are output B

      Tech Tips

      If any DTCs other than P24522A are output, troubleshoot those DTCs first.


    B

    GO TO DTC CHART Click here

    A

  2. CHECK FOR EXHAUST GAS LEAK


    1. Check for exhaust gas leaks.

      OK
      No gas leaks in exhaust system.

      Tech Tips

      Perform "Inspection After Repair" after repairing or replacing the exhaust system.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE EXHAUST SYSTEM

    OK

  3. CHECK CONNECTION OF VACUUM TRANSMITTING HOSE ASSEMBLY (DIFFERENTIAL PRESSURE SENSOR - VACUUM PIPE)

    B007YNIC01
    *1 Differential Pressure Sensor *2 Vacuum Transmitting Hose Assembly
    *3 No. 1 Vacuum Pipe - -

    1. Check the vacuum transmitting hose assembly is no exhaust gas leak between the differential pressure sensor and the vacuum pipe.

      OK
      The vacuum transmitting hose assembly is no exhaust gas leak.
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE MALFUNCTIONING PARTS

    OK

  4. CHECK BLOCKAGE OF VACUUM TRANSMITTING HOSE ASSEMBLY AND VACUUM PIPE

    B007Z79C01
    *1 Differential Pressure Sensor
    *2 Vacuum Transmitting Hose Assembly

    CAUTION:

    Be careful of being burned by exhaust gases during the following inspection.


    1. Disconnect vacuum transmitting hose assembly on the differential pressure sensor.

    2. Start the engine.

    3. Check if there are exhaust gas pulsations from vacuum transmitting hose assembly during idling.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE MALFUNCTIONING PARTS

    OK

  5. INSPECT DIFFERENTIAL PRESSURE SENSOR


    1. Inspect the differential pressure sensor.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (DIFFERENTIAL PRESSURE SENSOR - ECM) Click here

    OK

  6. 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

  7. CHECK WHETHER DTC OUTPUT RECURS (DTC P24522A)


    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

  8. CHECK HARNESS AND CONNECTOR (DIFFERENTIAL PRESSURE SENSOR - ECM)


    1. Disconnect the differential pressure sensor connector.

    2. Disconnect the ECM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      D75-3 (VC) - D1-80 (VCPX) Always Below 1 Ω
      D75-2 (PEX) - D1-78 (PEX) Always Below 1 Ω
      D75-1 (E2) - D1-79 (EPEX) Always Below 1 Ω
      D75-3 (VC) or D1-80 (VCPX) - Body ground and other terminals Always 10 kΩ or higher
      D75-2 (PEX) or D1-78 (PEX) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. 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