Dtc P2453 Diesel Particulate Filter Pressure Sensor A Circuit Range/Performance

DESCRIPTION

MONITOR DESCRIPTION

INSPECTION PROCEDURE

CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P2453)

CHECK CONNECTION OF AIR HOSE (DIFFERENTIAL PRESSURE SENSOR - VACUUM PIPE)

CHECK BLOCKAGE OF AIR HOSE AND VACUUM PIPE

READ VALUE USING GTS (DPF DIFFERENTIAL PRESSURE)

CORRECT TO NORMAL CONNECTION

REPLACE CLOGGED PARTS

REPLACE DIFFERENTIAL PRESSURE SENSOR

CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

DESCRIPTION

HINT:

1. For more information on the differential pressure sensor and Diesel Particulate Filter (DPF), refer to the following procedures (LandCruiser RM000000XSN04NX.html).
   
2. If P2453 is present, refer to the DTC chart for DPF system (LandCruiser RM000000XSN04NX.html).
   
3. If the vacuum hoses of the differential pressure sensor are incorrectly connected (crossed), the ECM interprets this as an abnormal pressure difference, DTC P2453 (Diesel Particulate Filter Pressure Sensor "A" Circuit Range/Performance) is stored and the MIL illuminates.
   

HINT:

1. DTC P2454 (Diesel Particulate Filter Pressure Sensor "A" Circuit Low) and/or DTC P2455 (Diesel Particulate Filter Pressure Sensor "A" Circuit High) will be stored if there is an open or short malfunction in the differential pressure sensor circuit.
   
2. After confirming DTC P2453, check the differential pressure in "Powertrain / Engine and ECT / Data List / DPF Differential Pressure" using the GTS.
   

MONITOR DESCRIPTION

INSPECTION PROCEDURE

NOTICE:

After replacing the ECM, the new ECM needs registration (LandCruiser RM0000012XK0AUX.html) and initialization (LandCruiser RM000000TIN08HX.html).

HINT:

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.

1. Connect the GTS to the DLC3.
   

2. Turn the engine switch on (IG) and turn the GTS on.
   

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

4. Read the DTCs.
   
   

   Result

   Result	Proceed to
   DTC P2453 is output	A
   DTC P2453 and other DTCs are output	B

   HINT:

   If codes other than DTC P2453 are output, perform troubleshooting for those DTCs first.

1. Check if the air hose routing between the differential pressure sensor and vacuum pipe is correct (LandCruiser RM000005UK9000X.html).
   

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

CAUTION:

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

1. Disconnect the air hoses (both upstream and downstream) from the differential pressure sensor.
   

2. Start the engine.
   

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

   OK:

   Exhaust gas pulsation exists.
   

1. Connect the GTS to the DLC3.
   

2. Turn the engine switch on (IG) and turn the GTS on.
   

3. Enter the following menus: Powertrain / Engine and ECT / Data List / DPF Differential Pressure.
   

4. Check that the differential pressure is as specified below.
   
   

   Result

   Condition	Differential Pressure Output	Sensor Condition
   Engine switch on (IG)	Approximately 0 kPa	Normal

1. Replace the differential pressure sensor (LandCruiser RM000005UKB000X.html).
   

1. Connect the GTS to the DLC3.
   

2. Turn the engine switch on (IG) and turn the GTS on.
   

3. Clear the DTCs (LandCruiser RM000000PDK1E5X.html).
   

4. Turn the engine switch off for 30 seconds or more.
   

5. Turn the engine switch on (IG) and turn the GTS on.
   

6. Enter the following menus: Powertrain / Engine and ECT / Data List / DPF Differential Pressure.
   

7. Check that the differential pressure is as specified below.
   

   HINT:

   1. As long as the pipe connections are correct, the displayed pressure will not be vacuum pressure.
      
   2. For reference result of real-vehicle check is as shown in the table below:
      
      

      Condition	DPF Differential Pressure
      2500 rpm without load	0.5 kPa or more

8. Start the engine.
   

9. Engine is running at 4000 rpm with no load for 10 seconds or more.
   

10. Confirm that the DTC is not output again.
    

    HINT:

    Perform the following procedure using the GTS to determine whether or not the DTC judgment has been carried out.

    1. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
       

    2. Input DTC P2453.
       

    3. Check that STATUS is NORMAL. If STATUS is INCOMPLETE or N/A, run the engine at 4000 rpm with no load for 10 seconds or more.