SFI SYSTEM(w/ Canister Pump Module), Diagnostic DTC:P111C62

DTC Code DTC Name
P111C62 Control Module Internal Temperature Sensor/Intake Air Temperature Sensor Signal Compare Failure

DESCRIPTION

The engine has an ECM internal temperature sensor and intake air temperature sensor.

The resistance of a thermistor within the ECM internal temperature sensor and intake air temperature sensor increases as the temperature decreases and decreases as the temperature increases.

The voltage monitored by the ECM changes in accordance with the change in the resistance of the thermistor.

The ECM performs control based on these voltages.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P111C62 Control Module Internal Temperature Sensor/Intake Air Temperature Sensor Signal Compare Failure

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


  1. The battery voltage is 8 V or higher.

  2. 7 hours or more have elapsed since the engine stopped on the previous trip.

  3. 0.5 seconds or more after engine switch is turned on (IG).

  4. Either of the following conditions is met:


    1. The minimum ECM internal temperature is -10°C (14°F) or higher.

    2. The minimum intake air temperature is -10°C (14°F) or higher.

  5. The difference between the readings of the ECM internal temperature and intake air temperature is higher than 20°C (36°F).

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

  • ECM (ECM internal temperature sensor)

 Comes on DTC stored SAE Code: P111C
Related Data List
DTC No. Data List
P111C62 Intake Air Temperature
Ambient Temperature
B006XG3E15

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 temperature of the ECM internal temperature and intake air temperature (for mass airflow meter sub-assembly) are very similar. When the vehicle has been parked for less than 7 hours, differences in the readings may exist, but this dos not necessarily indicate a fault.

MONITOR DESCRIPTION

6, 6.5 and 7 hours after the engine has stopped, the ECM monitors the voltage of the ECM internal temperature sensor and intake air temperature sensor.

If the difference between the readings of the ECM internal temperature and intake air temperature is more than 20°C (36°F), the ECM determines that there is a malfunction in the ECM internal temperature sensor circuit or intake air temperature sensor circuit and stores a DTC and illuminates the MIL.

MONITOR STRATEGY

Frequency of Operation Once per driving cycle

CONFIRMATION DRIVING PATTERN


  1. Connect the GTS to the DLC3.

  2. Turn the engine 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 engine switch off.

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

  7. Turn the engine switch on (IG).

  8. Turn the GTS on.

  9. Wait 1 seconds [C].

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

  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: P111C62.

  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 is malfunctioning.

    • If the judgment result is INCOMPLETE, 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 P111C62)


    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 P111C62 is output A
      DTC P111C62 and other DTCs are output B

      Tech Tips

      If any DTCs other than P111C62 are output, troubleshoot those DTCs first.

    6. Record the freeze frame data.


    B

    GO TO DTC CHART Click here

    A

  2. CHECK FREEZE FRAME DATA (INTAKE AIR TEMPERATURE AND AMBIENT TEMPERATURE)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Using the GTS, read the values displayed in the Freeze Frame Data recorded in step 1.


      Powertrain > Engine
      Tester Display
      Intake Air Temperature
      Ambient Temperature

    5. Read the value displayed on the GTS.

      Standard
      Difference between the Intake Air Temperature and the Ambient Temperature is within 15°C (27°F).

      Tech Tips


      • When the engine is cold, the value of the intake air temperature, ECM internal temperature and ambient temperature should be approximately the same.

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

        Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ECM Click here

    NG

    REPLACE MASS AIR FLOW METER SUB-ASSEMBLY Click here