SFI SYSTEM(w/o Canister Pump Module), Diagnostic DTC:P21822A

DTC Code DTC Name
P21822A Engine Coolant Temperature Sensor 2 Signal Stuck In Range

DESCRIPTION

Refer to DTC P218211.

Click here

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P21822A Engine Coolant Temperature Sensor 2 Signal Stuck In Range

Either of the following conditions is met (2 trip detection logic):


  • When engine is started cold and warmed up, the engine coolant temperature sensor (for cylinder head side) value does not change.

  • After the warmed up engine is stopped and the next cold engine start is performed, the engine coolant temperature sensor (for cylinder head side) value does not change.

  • Engine coolant temperature sensor (for cylinder head side)

  • Water control valve

  • ECM

 Comes on DTC stored SAE: P2183

MONITOR DESCRIPTION



MONITOR STRATEGY

Required Sensors/Components (Main) Engine coolant temperature sensor (for cylinder head side)
Frequency of Operation Once per driving cycle

CONFIRMATION DRIVING PATTERN

B006A0QE03

  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. Turn the engine switch on (IG) [A].

  7. Turn the GTS on.

  8. Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature Sensor2.

  9. Check that the engine coolant temperature (for cylinder head side) is 60°C (140°F) or less.

  10. Start the engine and idle it for 5 minutes or more [B].

    Tech Tips

    If the engine coolant temperature does not change by 5°C (9°F) or higher, the engine coolant temperature sensor is malfunctioning. It is not necessary to continue this procedure.

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

  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: P21822A.

  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 is malfunctioning.

    • If the judgment result is INCOMPLETE, perform steps [D] through [E].

  16. Drive the vehicle at 40 km/h (25 mph) or more for a total of 5 minutes or more [D].

    CAUTION:

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

    Tech Tips

    In the event of the drive pattern being interrupted (possibly due to factors such as traffic conditions), the drive pattern can be resumed.

  17. Check the DTC judgment result again [E].

    Tech Tips


    • If the judgment result is NORMAL, the system is normal.

    • If the judgment result is ABNORMAL, the system is malfunctioning.

CAUTION / NOTICE / HINT

Tech Tips


  • If the DTC P218211 or P218215 is output simultaneously with DTC P21822A, the engine coolant temperature sensor may have an open or a short circuit. Troubleshoot those DTCs first.

  • When the DTC is output, check the engine coolant temperature using the GTS. Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature Sensor2. If the Coolant Temperature Sensor2 value is lower than the actual engine coolant temperature (for cylinder head side), the engine coolant temperature sensor (for cylinder head side) circuit may be malfunctioning. In this case, check the wire harnesses and connectors (and those connections) between the ECM and the engine coolant temperature sensor (for cylinder head side) first.

  • 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 P21822A)


    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 P21822A is output A
      DTC P21822A and other DTCs are output B

      Tech Tips

      If any DTCs other than P21822A are output, troubleshoot those DTCs first.


    B

    GO TO DTC CHART Click here

    A

  2. INSPECT ENGINE COOLANT TEMPERATURE SENSOR (FOR CYLINDER HEAD SIDE)


    1. Inspect the engine coolant temperature sensor (for cylinder head side).

      Click here

      Tech Tips

      Perform "Inspection After Repair" after replacing the engine coolant temperature sensor (for cylinder head side).

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE ENGINE COOLANT TEMPERATURE SENSOR (FOR CYLINDER HEAD SIDE) Click here

    OK

  3. READ VALUE USING GTS (COOLANT TEMPERATURE SENSOR1, COOLANT TEMPERATURE SENSOR2)


    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 / Data List / Coolant Temperature Sensor1, Coolant Temperature Sensor2.


      Powertrain > Engine > Data List
      Tester Display
      Coolant Temperature Sensor1
      Coolant Temperature Sensor2

    5. Compare Data List items "Coolant Temperature Sensor1" and "Coolant Temperature Sensor2" when the engine is warmed up from an engine coolant temperature below 60°C (140°F) to 60°C (140°F) or higher.

      Tech Tips

      Perform "Inspection After Repair" after replacing the engine coolant temperature sensor (for cylinder head side).

      Click here

      Result
      Result Proceed to
      Both Coolant Temperature Sensor1 and Coolant Temperature Sensor2 rise A
      Both Coolant Temperature Sensor1 and Coolant Temperature Sensor2 do not rise B
      Coolant Temperature Sensor2 does not rise C

    A

    CHECK FOR INTERMITTENT PROBLEMS Click here

    C

    REPLACE ENGINE COOLANT TEMPERATURE SENSOR (FOR CYLINDER HEAD SIDE) Click here

    B

  4. 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.

      Result
      Proceed to
      NEXT

    NEXT

  5. CHECK WHETHER DTC OUTPUT RECURS (DTC P21822A)


    1. With the engine stopped, leave the vehicle as is for 5 hours or more.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Start the engine and warm it up until the engine coolant temperature reaches 60°C (140°F) or higher.

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

    6. Read the DTCs.


      Powertrain > Engine > Trouble Codes
      Result
      Result Proceed to
      DTCs are not output A
      DTC P21822A is output B
      DTC P21822A and other DTCs are output C

    A

    CHECK FOR INTERMITTENT PROBLEMS Click here

    B

    REPLACE WATER CONTROL VALVE Click here

    C

    GO TO DTC CHART Click here