SFI SYSTEM(w/ Canister Pump Module), Diagnostic DTC:P011B62

DTC Code DTC Name
P011B62 Engine Coolant Temperature / Intake Air Temperature Signal Compare Failure

DESCRIPTION

This engine uses an engine coolant temperature sensor and an intake air temperature sensor to detect temperatures related to engine operation. A thermistor, whose resistance value varies according to the temperature, is built into each sensor. When the temperature becomes low, the resistance of the thermistor increases. When the temperature becomes high, the resistance decreases. These variations in resistance are transmitted to the ECM as voltage changes.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P011B62 Engine Coolant Temperature / Intake Air Temperature Signal Compare Failure

All of the following conditions are met (2 trip detection logic):


  1. The auxiliary battery voltage is 10.5 V or higher.

  2. 7 hours or more have elapsed since the power switch was turned off in the previous trip.

  3. 67 seconds or more have elapsed since a cold engine start was performed.

  4. Either of the following conditions is met:


    1. The minimum intake air temperature after the engine starts is -10°C (14°F) or higher.

    2. The engine coolant temperature before the engine starts is -10°C (14°F) or higher.

  5. The difference between the readings of the engine coolant temperature and intake air temperature is higher than 25°C (45°F).

  • Intake air temperature sensor (mass air flow meter sub-assembly)

  • Engine coolant temperature sensor

  • ECM

 Comes on DTC stored SAE Code: P011B
B004OR9E01

Tech Tips


  • Waiting is required to prevent the temperature of the engine from affecting the readings. If the engine has been operated recently, it is not possible to accurately compare the readings.

  • For diagnosis, in order to duplicate the detection conditions of the DTC, it is necessary to park the vehicle for 7 hours. Parking the vehicle for 7 hours ensures that the actual engine coolant temperature and intake air temperature are very similar. When the vehicle has been parked for less than 7 hours, differences in the readings may exist, but this does not necessarily indicate a fault.

MONITOR DESCRIPTION

The ECM monitors the difference between the engine coolant temperature and the intake air temperature when the engine is started cold to accurately detect the engine temperature conditions. The monitor runs when the engine is started after 7 hours or more have elapsed since the power switch was turned off in the previous trip. If the difference between the engine coolant temperature and the intake air temperature on a cold start exceeds 25°C (45°F), the ECM interprets this as a malfunction in the engine coolant temperature sensor circuit or intake air temperature sensor circuit, illuminates the MIL and stores this DTC.

MONITOR STRATEGY

Frequency of Operation Once per driving cycle

CONFIRMATION DRIVING PATTERN

B004OF4E40

  1. Connect the GTS to the DLC3.

  2. Turn the power switch on (IG) [A].

  3. Turn the GTS on.

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

  5. Turn the power switch off.

  6. With the engine stopped, leave the vehicle as is for 7.5 hours or more [B].

  7. Turn the power switch on (IG).

  8. Turn the GTS on.

  9. Put the engine in Inspection Mode (Maintenance Mode).

    Click here

  10. Start the engine and wait 70 seconds or more [C].

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

  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: P011B62.

  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
    N/A

    • Unable to perform DTC judgment

    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    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 or N/A, perform steps [B] through [D] again.

CAUTION / NOTICE / HINT

Tech Tips

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 P011B62)


    1. Connect the GTS to the DLC3.

    2. Turn the power 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 P011B62 is output A
      DTC P011B62 and other DTCs are output B

      Tech Tips

      If any DTCs other than P011B62 are output, troubleshoot those DTCs first.


    B

    GO TO DTC CHART Click here

    A

  2. READ VALUE USING GTS (INTAKE AIR TEMPERATURE)


    1. Leave the vehicle for 7 hours or more.

      Tech Tips

      It is necessary to leave the vehicle for 7 hours or more to create conditions similar to the DTC detection conditions.

    2. Connect the GTS to the DLC3.

    3. Turn the power switch on (IG).

    4. Turn the GTS on.

    5. Enter the following menus: Powertrain / Engine / Data List / Intake Air Temperature.


      Powertrain > Engine > Data List
      Tester Display
      Intake Air Temperature

    6. According to the display on the GTS, read the Data List.

      Standard
      Difference between the intake air temperature and the actual outside air temperature is 10°C (18°F) or less.

      Tech Tips


      • The temperature displayed on the outside temperature gauge of the vehicle (if equipped) is not suitable for comparing to the intake air temperature reading. The outside temperature gauge has a significant delay built in to prevent swings in the temperature display. Use an accurate thermometer to determine the outside air temperature.

      • Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly.

        Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE MASS AIR FLOW METER SUB-ASSEMBLY Click here

    OK

  3. READ VALUE USING GTS (COOLANT TEMPERATURE)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

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


      Powertrain > Engine > Data List
      Tester Display
      Coolant Temperature

    5. According to the display on the GTS, read the Data List.

      Standard
      The difference between the engine coolant temperature and the actual outside air temperature is 10°C (18°F) or less.

      Tech Tips


      • If the result is not as specified, check that there are no heat sources such as a block heater in the engine compartment.

      • Perform "Inspection After Repair" after replacing the engine coolant temperature sensor.

        Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ECM Click here

    NG

    REPLACE ENGINE COOLANT TEMPERATURE SENSOR Click here