SFI SYSTEM(w/o Canister Pump Module), Diagnostic DTC:P26CE37

DTC Code DTC Name
P26CE37 Engine Coolant Pump Overspeed

DESCRIPTION

Refer to DTC P26CA12.

Click here

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P26CE37 Engine Coolant Pump Overspeed The speed of the engine water pump assembly is a certain value or more when an operation request signal is being output to the engine water pump assembly (1 trip detection logic).

  • Lack of engine coolant

  • Engine coolant leak

  • Engine water pump assembly (water inlet housing)

 Does not come on DTC stored SAE Code: P26CE
Related Data List
DTC No. Data List
P26CE37

  • Coolant Temperature

  • Electric Water Pump Target Speed

  • Electric Water Pump Speed

MONITOR DESCRIPTION

The ECM monitors the speed of the engine water pump assembly. When the speed becomes a certain value or more, the ECM judges that the speed is abnormally high and stores a DTC (The MIL does not illuminate).

MONITOR STRATEGY

Frequency of Operation Continuous

CONFIRMATION DRIVING PATTERN


  1. Connect the GTS to the DLC3.

  2. Turn the ignition switch to ON.

  3. Turn the GTS on.

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

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

  6. Turn the ignition switch to ON.

  7. Turn the GTS on.

  8. Move the shift lever to P.

  9. Start the engine and maintain an engine speed of 2500 rpm or more for at least 40 seconds [A].

  10. Enter the following menus: Powertrain / Engine / Trouble Codes [B].

  11. 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.

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

  13. Input the DTC: P26CE37.

  14. 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] through [D].

  15. Idle the engine for 5 minutes or more [C].

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

  17. 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.

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

  19. 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.

CAUTION / NOTICE / HINT

Tech Tips


  • If the engine is run continuously with a low engine coolant level, DTC P26CE37 may be stored.

  • If the engine coolant level is sufficient but DTC P26CE37 is output, confirm with the customer whether engine coolant was added after the vehicle had been driven with insufficient engine coolant.

  • 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 P26CE37)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    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 P26CE37 is output A
      DTC P26CE37 and other DTCs are output B
      DTC P26CE37 and P26CB71 are output C

      Tech Tips


      • If any DTCs other than P26CE37 are output, troubleshoot those DTCs first.

      • If both DTC P26CB71 (pump stuck) and P26CE37 (pump overspeed) are stored, perform troubleshooting for DTC P26CB71 first as the engine coolant pump assembly may be stuck.


    B

    GO TO DTC CHART Click here

    C

    GO TO DTC P26CB71 Click here

    A

  2. CHECK ENGINE COOLANT LEVEL IN RESERVOIR TANK


    1. Check that the engine coolant level is between the FULL and LOW lines.

      Click here

      Result
      Result Proceed to
      Engine coolant level is above the LOW line A
      Engine coolant level is below the LOW line B

    A

    GO TO STEP 6 Click here

    B

  3. CHECK FOR ENGINE COOLANT LEAKS


    1. Check the areas around the engine and heater for engine coolant leaks.

      Click here

      Tech Tips

      If the engine oil is cloudy during the engine oil level gauge check, it means that engine coolant has entered the engine lubrication system.

      OK
      No leaks.
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA Click here

    OK

  4. ADD ENGINE COOLANT


    1. Fill the reservoir tank up to the FULL line with engine coolant.

      Note

      Make sure not to add engine coolant when the engine is hot.

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 6 Click here

  5. REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA


    1. Repair any engine coolant leaks.

      Tech Tips

      Add engine coolant and perform air bleeding after repair.

      Result
      Proceed to
      NEXT

    NEXT

  6. BLEED ENGINE COOLANT


    1. Bleed air from the cooling system.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  7. CLEAR DTC


    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 > Clear DTCs

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

      Result
      Proceed to
      NEXT

    NEXT

  8. CHECK WHETHER DTC OUTPUT RECURS (DTC P26CE37)


    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 DTCs.


      Powertrain > Engine > Trouble Codes
      Result
      Result Proceed to
      DTCs are not output A
      DTC P26CB71 is output B
      DTC P26CE37 is output C

    A

    END

    B

    GO TO DTC P26CB71 Click here

    C

  9. BLEED ENGINE COOLANT


    1. Bleed air from the cooling system.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  10. CLEAR DTC


    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 > Clear DTCs

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

      Result
      Proceed to
      NEXT

    NEXT

  11. CHECK WHETHER DTC OUTPUT RECURS (DTC P26CE37)


    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 DTCs.


      Powertrain > Engine > Trouble Codes
      Result
      Result Proceed to
      DTCs are not output A
      DTC P26CE37 is output B

    A

    END

    B

  12. REPLACE ENGINE WATER PUMP ASSEMBLY (WATER INLET HOUSING)


    1. Replace the engine water pump assembly (water inlet housing).

      Click here

      Tech Tips

      When replacing any cooling system parts, if excessive deposits of rust or scale exist or the concentration of the engine coolant is abnormal, replace the engine coolant.

      Result
      Proceed to
      NEXT

    NEXT

  13. CLEAR DTC


    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 > Clear DTCs

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

      Result
      Proceed to
      NEXT

    NEXT

  14. CHECK WHETHER DTC OUTPUT RECURS (DTC P26CE37)


    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 DTCs.


      Powertrain > Engine > Trouble Codes

      Tech Tips

      If no DTC is output, the repair has been successfully completed.

      Result
      Proceed to
      NEXT

    NEXT

    END