ECD SYSTEM(w/ Glow Plug Controller), Diagnostic DTC:P2000

DTC Code DTC Name
P2000 NOx Adsorber Efficiency Below Threshold Bank 1

DESCRIPTION

If the amount of accumulated PM in the DPF catalyst exceeds the threshold, the ECM performs PM regeneration. During PM regeneration, the temperature of the exhaust gas measured at the exhaust gas temperature sensor B1S1 and exhaust gas temperature sensor B1S2 will increase.

If the output values of the exhaust gas temperature sensor B1S1 and exhaust gas temperature sensor B1S2 exceed the threshold, the ECM will determine that the DPF catalytic converter is malfunctioning, illuminate the MIL and store this DTC. This DTC will also be stored if the DPF catalytic converter has been removed or replaced with an inappropriate part as the temperature of the exhaust gas measured at the exhaust gas temperature sensor B1S1 will be lower than the estimated temperature under normal conditions.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P2000 NOx Adsorber Efficiency Below Threshold Bank 1

Condition A:


  • HC conversion rate of catalyst is less than the standard value (detect during DPF regeneration) (2 trip detection logic).

Condition B:


  • The difference between the temperature of the exhaust gas measured by the exhaust gas temperature sensor B1S1 and the estimated temperature calculated by the ECM is higher than the threshold (2 trip detection logic).

  • No. 2 exhaust manifold (catalytic converter)

  • Exhaust gas temperature sensor B1S1

  • Exhaust gas temperature sensor B1S2

  • Injector assembly

 Comes on DTC stored
DTC Detection Drive Pattern
DTC No. DTC Detection Drive Pattern
P2000

Condition A:


  • Vehicle driving with forced PM regeneration by GTS

Condition B:


  • Vehicle driving with warm engine and high load.
Related Data List
DTC No. Data List
P2000

  • Exhaust Temperature B1S1

  • Exhaust Temperature B1S2

CAUTION / NOTICE / HINT

Note

When replacing the injector assembly and/or No. 2 exhaust manifold (catalyst), perform ECM Initialization and Registration.

Click here

Tech Tips

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.

PROCEDURE


  1. CHECK NO. 2 EXHAUST MANIFOLD (CATALYTIC CONVERTER)


    1. Check the installation condition of the No. 2 exhaust manifold, exhaust gas temperature sensor B1S1 and exhaust gas temperature sensor B1S2.

      Click here

      Tech Tips

      If the exhaust gas temperature sensor B1S1 or B1S2 is not installed correctly, or if a part, such as the No. 2 exhaust manifold, has been modified or replaced with an inappropriate part, this DTC will be stored.

      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2000)


    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 P2000 is output A
      DTC P2000 and other DTCs are output B

      Tech Tips

      If any DTCs other than P2000 are output, troubleshoot those DTCs first.


    B

    GO TO DTC CHART Click here

    A

  3. READ VALUE USING GTS (EXHAUST TEMPERATURE B1S1 AND EXHAUST TEMPERATURE B1S2)


    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 / Data List / Exhaust Temperature B1S1 and Exhaust Temperature B1S2.


      Powertrain > Engine and ECT > Data List
      Tester Display
      Exhaust Temperature B1S1
      Exhaust Temperature B1S2

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

    5. Read the value.

      Tech Tips

      When reading the values of Data List, confirm that PM regeneration is not activating (value of "After Injection Period" is 0) by entering the following menus: Powertrain / Engine and ECT / Data List / After Injection Period.

      If PM regeneration is activating (value of "After Injection Period" is not 0), drive the vehicle until the PM regeneration is complete (value of "After Injection Period" becomes 0).

      Standard
      Dala List Condition Standard Value
      Exhaust Temperature B1S1

      Idling with warm engine

      (Data List item "After Injection Period" is 0)

      		 80°C (176°F) or higher, and less than 220°C (428°F)
      Exhaust Temperature B1S2 80°C (176°F) or higher, and less than 220°C (428°F)
      Result
      Result Proceed to
      OK A
      Exhaust Temperature B1S1 value is malfunction B
      Exhaust Temperature B1S2 value is malfunction C

    B

    REPLACE EXHAUST GAS TEMPERATURE SENSOR B1S1 Click here

    C

    REPLACE EXHAUST GAS TEMPERATURE SENSOR B1S2 Click here

    A

  4. PERFORM ACTIVE TEST USING GTS (ACTIVATE THE DPF REJUVENATE (PM))


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Start the engine.

    5. Clear the DTCs.


      Powertrain > Engine and ECT > Clear DTCs

    6. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the DPF Rejuvenate (PM) / Data List / Exhaust Temperature B1S1, Exhaust Temperature B1S2 and DPNR/DPF Status Reju(PM).


      Powertrain > Engine and ECT > Active Test
      Active Test Display
      Activate the DPF Rejuvenate (PM)
      Data List Display
      Exhaust Temperature B1S1
      Exhaust Temperature B1S2
      DPNR/DPF Status Reju(PM)

      Tech Tips

      After clearing DTCs, immediately enter the Active Test and then drive the vehicle.

    7. Perform the Active Test and then drive the vehicle at a constant engine speed of 2000 rpm or more (shift position: 3rd gear) at a vehicle speed between 65 to 100 km/h (40 to 62 mph).

      CAUTION:

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

      Tech Tips

      While the Active Test being performed, the accelerator pedal opening angle should be kept as constant as possible.

    8. Confirm that both Exhaust Temperature B1S1 and Exhaust Temperature B1S2 reach 250°C (482°F) or higher and the DPNR/DPF Status Reju(PM) turns from "Ready" to "Operate".

      Tech Tips


      • If the exhaust gas temperature does not reach the specified value, drive the vehicle again with a constant engine speed of 2000 rpm or more (shift position: 3rd gear) at a vehicle speed between 65 to 100 km/h (40 to 62 mph).

      • Perform the Active Test until one of the following conditions is met:


        1. DPNR/DPF Status Reju(PM) displays "Compl".

        2. DPNR/DPF Status Reju(PM) turns from "Operate" to "Ready" even if the cumulative time of "Operate" exceeds 35 minutes.

        3. DPNR/DPF Status Reju(PM) stays "Ready" even if both Exhaust Temperature B1S1 and Exhaust Temperature B1S2 have reached 250°C (482°F) or higher for more than 10 minutes with an engine speed of 2000 rpm or more. (PM regeneration could not operate.)

    9. Take a snapshot with the GTS when the Exhaust Temperature B1S1 and Exhaust Temperature B1S2 rise and become stable.

    10. Enter the following menus: Powertrain / Engine and ECT / Data List / DPNR/DPF Status Reju(PM).


      Powertrain > Engine and ECT > Data List
      Tester Display
      DPNR/DPF Status Reju(PM)

    11. Confirm the DPNR/DPF Status Reju(PM).

      Tech Tips


      • While performing PM regeneration, the DPNR/DPF Status Reju(PM) displays "Operate".

      • If the PM regeneration is stopped (DPNR/DPF Status Reju(PM) displays "Ready") because the exhaust gas temperature is reduced due to the driving conditions, the PM regeneration is restarted automatically (DPNR/DPF Status Reju(PM) displays "Operate") when the exhaust gas temperature is increased by driving with a high engine speed driving.

      • If the cumulative time of DPNR/DPF Status Reju(PM) at "Operate" exceeds 35 minutes, the Active Test will be canceled. In this case, the DPNR/DPF Status Reju(PM) turns to "Ready" and the Active Test / Activate the DPF Rejuvenate (PM) will be prohibited for one hour while engine running. Thus, perform the Active Test again after running the engine for one hour.

      DPNR/DPF Status Reju(PM) (Reference)
      GTS Display Status
      Standby Before entering "Activate the DPF Rejuvenate (PM)"
      Ready Enabling condition for "Activate the DPF Rejuvenate (PM)" is not sufficient
      Operate

      • PM regeneration is being performed.

      • If "Activate the DPF Rejuvenate (PM)" is not finished completely, the status turns to "Ready".

        For example, if the vehicle idles for more than 3 minutes while the PM regeneration is being performed, the exhaust gas temperature falls to outside of enabling condition and PM regeneration is stopped.

      • If "Activate the DPF Rejuvenate (PM)" is finished completely, the status turns to "Compl".
      Compl PM regeneration is completed (Amount of PM is 0 g)

    12. Check the value of the Data List items "Exhaust Temperature B1S1" and "Exhaust Temperature B1S2" in the snapshot that was taken while "Operate" was displayed for "DPNR/DPF Status Reju(PM)".

      Tech Tips

      As the temperature of the exhaust gas will decrease when the value of DPNR/DPF Status Reju(PM) changes to "Compl", make sure to read the Data List while "Operate" is displayed.

      Standard
      Dala List Condition Standard Value
      Exhaust Temperature B1S1

      Value of DPNR/DPF Status Reju(PM) is "Operate".

      Drive the vehicle at 65 to 100 km/h (40 to 62 mph) (shift position: 3rd gear)

      		 300°C (572°F) or higher
      Exhaust Temperature B1S2 500°C (932°F) or higher (maximum temperature is higher than 570°C (1058°F))
      Result
      Proceed to
      OK
      NG

    NG

    READ VALUE USING GTS (INJECTION FEEDBACK VAL #1 TO #4 AND INJECTION VOLUME) Click here

    OK

  5. PERFORM ACTIVE TEST USING GTS (ACTIVATE THE DPF REJUVENATE (PM))


    1. Check the amount of the time it took the value of DPNR/DPF Status Reju(PM) to change to "Compl" when the Active Test "Activate the DPF Rejuvenate (PM)" was being performed.

      Standard
      "Compl" was displayed within 30 minutes.
      Result
      Proceed to
      OK
      NG

    OK

    END

    NG

  6. READ VALUE USING GTS (INJECTION FEEDBACK VAL #1 TO #4 AND INJECTION VOLUME)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

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

    5. Allow the engine to idle for 30 seconds or more.

      Tech Tips

      The shift lever should be in neutral and the A/C switch and all accessory switches should be off.

    6. Enter the following menus: Powertrain / Engine and ECT / Data List / Injection Feedback Val #1 to #4 and Injection Volume.


      Powertrain > Engine and ECT > Data List
      Tester Display
      Injection Volume
      Injection Feedback Val #1
      Injection Feedback Val #2
      Injection Feedback Val #3
      Injection Feedback Val #4

    7. Read the value.

      Tech Tips

      When reading the values of Data List, confirm that PM regeneration is not activating (value of "After Injection Period" is 0) by entering the following menus: Powertrain / Engine and ECT / Data List / After Injection Period.

      If PM regeneration is activating (value of "After Injection Period" is not 0), drive the vehicle until the PM regeneration is complete (value of "After Injection Period" becomes 0).

      Standard
      GTS Display Engine Condition Specified Condition
      Injection Volume Idling

      Less than 8 mm3/st

      Injection Feedback Val #1

      Injection Feedback Val #2

      Injection Feedback Val #3

      Injection Feedback Val #4

      		 Idling

      Between -2.0 mm3/st and 2.0 mm3/st

      Tech Tips


      • Cylinders that have a compensation value which is more than the value specified above are considered to be malfunctioning. Use the following steps to inspect and repair the cylinder.

      • If the value of Injection Volume is 8 mm3/st or more and the values of Injection Feedback Val #1 to #4 is within the threshold, replace the injector assembly for all cylinders.

        In this case, there is a possibility that too much recirculated exhaust gas is entering the engine. Therefore, you should compare the Target EGR Valve Pos with the Actual EGR Valve Pos by entering the following menus using the GTS: Powertrain / Engine and ECT / Data List / Target EGR Valve Pos and Actual EGR Valve Pos.

        If the difference between Target EGR Valve Pos and Actual EGR Valve Pos exceeds +/-10%, the EGR system may have a malfunctioning.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE INJECTOR ASSEMBLY Click here

    OK

  7. REPLACE NO. 2 EXHAUST MANIFOLD


    1. Replace the No. 2 exhaust manifold.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  8. PERFORM INITIALIZATION


    1. Clear the DPF deterioration record using the GTS.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 14 Click here

  9. REPLACE INJECTOR ASSEMBLY


    1. Replace the injector assembly.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  10. PERFORM REGISTRATION AND INITIALIZATION


    1. Perform Registration and Initialization.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  11. BLEED AIR FROM FUEL SYSTEM


    1. Bleed air from fuel system.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 14 Click here

  12. REPLACE EXHAUST GAS TEMPERATURE SENSOR B1S1


    1. Replace the exhaust gas temperature sensor B1S1.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 14 Click here

  13. REPLACE EXHAUST GAS TEMPERATURE SENSOR B1S2


    1. Replace the exhaust gas temperature sensor B1S2.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  14. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs.


      Powertrain > Engine and ECT > Clear DTCs

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

    6. Perform the simulation test.

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

    8. Confirm that the pending DTC is not output again.


      Powertrain > Engine and ECT > Trouble Codes
      Result
      Proceed to
      NEXT

    NEXT

    END