ECD SYSTEM(w/o Glow Plug Controller), Diagnostic DTC:P2453

DTC Code DTC Name
P2453 Diesel Particulate Filter Pressure Sensor "A" Circuit Range/Performance

DESCRIPTION

Refer to DTC P2454.

Click here

Tip:

If the exhaust pipe air hoses of the differential pressure sensor are incorrectly connected (crossed), the ECM interprets this as an abnormal pressure difference and DTC P2453 will be stored and the MIL will be illuminated.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P2453

Diesel Particulate Filter Pressure Sensor "A" Circuit Range/Performance

Both of the following conditions are met:

(1 trip detection logic)

  • The differential pressure indicates -1.6 kPa or less while engine is running

  • Turn the ignition switch off and wait for 30 seconds or more

  • Incorrect vacuum transmitting hose routing

  • Vacuum transmitting hose is clogged

  • Blockage in vacuum transmitting pipe

  • Differential pressure sensor

  • No. 2 exhaust manifold converter sub-assembly (DPF catalytic converter)

  • ECM

Comes on

DTC stored
Table 1. DTC Detection Drive Pattern

DTC No.

DTC Detection Drive Pattern

P2453

Start the engine and drive the vehicle with a engine speed of 3000 rpm or more (3rd gear) for 10 minutes or more.

Then turn the ignition switch off and wait for 30 seconds or more.

DTC No.

Data List

P2453

DPF Differential Pressure
Tip:

DTC P2454 (Differential pressure sensor circuit low) and/or DTC P2455 (Differential pressure sensor high) will be present if there is an open or short in the differential pressure sensor circuit.

CAUTION / NOTICE / HINT

Note:

When replacing the ECM and/or DPF catalyst, perform ECM Initialization and Registration.

Click hereClick here

Tip:

  • When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the GTS. Then after installing a new ECM, perform all of the initialization and registration procedures for the "Learning Values Write" function by following the instructions shown on the GTS display.

  • Read freeze frame data using the GTS. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.

  • Check the DPF Differential Pressure using the GTS by entering the following menus: Powertrain / Engine and ECT / Data List / DPF Differential Pressure.

    Table 2. DPF Differential Pressure (Reference Value)

    Condition

    DPF Differential Pressure

    Idling (warm up the engine)

    -0.204 kPa

    Running without load (2500 rpm)

    0.296 kPa

    Running without load (4000 rpm)

    0.699 kPa

PROCEDURE

  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2453)

    1. Connect the GTS to the DLC3.

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

    3. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    4. Read the DTCs.

      Powertrain > Engine and ECT > Trouble Codes

      Result

      Result

      Proceed to

      DTC P2453 and "P2454 or P2455" are output

      A

      Except above

      B
      Tip:

      If the DTC P2453 and "P2454 or P2455" are output, perform troubleshooting for DTC P2454 and P2455 first.

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

    1. Check if vacuum transmitting hoses routing between the differential pressure sensor and the vacuum transmitting pipe is correct.

      A294342C01

      *1

      Differential Pressure Sensor

      *2

      Vacuum Transmitting Hose (for upstream)

      *3

      No. 2 Vacuum Transmitting Hose (for downstream)

      -

      -

      *a

      Marked: Yellow

      *b

      Marked: Pink

      *c

      Marked: Red

      *d

      Marked: Orange

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

    Result

    Proceed to

    OK

    NG
    NG

    CORRECT TO NORMAL CONNECTIONClick here

    OK

  3. CHECK BLOCKAGE OF VACUUM TRANSMITTING HOSE AND TRANSMITTING PIPE

    CAUTION:

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

    1. Disconnect both vacuum transmitting hoses (upstream and downstream) on the differential pressure sensor.

    2. Start the engine.

    3. Check if there are exhaust gas pulsations from both vacuum transmitting hoses during idling.

      OK

      There is no blockage.

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE CLOGGED PARTSClick here

    OK

  4. INSPECT DIFFERENTIAL PRESSURE SENSOR

    1. Inspect the differential pressure sensor.

      Click here

      Standard

      Approximately the same pressure as the applied pressure is indicated.

      Tip:

      The DPF Differential Pressure displayed is a value that does not reflect the zero point adjustment. Therefore the displayed may vary about +/-0.3 kPa even if the applied differential pressure is 0 kPa.

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE DIFFERENTIAL PRESSURE SENSORClick here

    OK

  5. PERFORM DIFFERENTIAL PRESSURE SENSOR LEARNING

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

    2. Turn the ignition switch off and wait for 30 seconds or more (B).

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

      Tip:

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

    Result

    Proceed to

    NEXT
    NEXT

  6. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

    1. Connect the GTS to the DLC3.

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

    3. Clear the DTCs.

      Powertrain > Engine and ECT > Clear DTCs

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

    5. Start the engine and drive the vehicle with an engine speed of 3000 rpm or more (3rd gear) for 10 minutes or more.

      CAUTION:

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

    6. Turn the ignition switch off and wait for 30 seconds or more.

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

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

    9. Confirm that the DTC is not output again.

      Powertrain > Engine and ECT > Trouble Codes

    Result

    Proceed to

    NEXT
    NEXT

    END

  7. REPLACE DIFFERENTIAL PRESSURE SENSOR

    1. Replace the differential pressure sensor.

      Click hereClick 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 ignition switch off and wait for 30 seconds or more (B).

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

      Tip:

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

    Result

    Proceed to

    NEXT
    NEXT

  8. INSPECT DIFFERENTIAL PRESSURE SENSOR

    1. Inspect the differential pressure sensor.

      Click here

      Standard

      Approximately the same pressure as the applied pressure is indicated.

      Tip:

      The DPF Differential Pressure displayed is a value that does not reflect the zero point adjustment. Therefore the displayed may vary about +/-0.3 kPa even if the applied differential pressure is 0 kPa.

    Result

    Proceed to

    OK

    NG
    OK

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

    NG

    REPLACE ECMClick here

  9. REPLACE CLOGGED PARTS

    Result

    Proceed to

    NEXT
    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  10. REPLACE ECM

    1. Replace the ECM.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  11. CORRECT TO NORMAL CONNECTION

    Result

    Proceed to

    NEXT
    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here