Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001BGY9
Model Year Start: 2019 Model: Corolla Hatchback Prod Date Range: [06/2018 - 03/2019]
Title: M20A-FKS (ENGINE CONTROL): SFI SYSTEM: P111C62; Control Module Internal Temperature Sensor/Intake Air Temperature Sensor Signal Compare Failure; 2019 - 2020 MY Corolla Corolla Hatchback [06/2018 - 03/2019]

DTC

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).
  • Mass air flow meter sub-assembly (intake air temperature sensor)
  • 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

HINT:

  • 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 does 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

Related DTCs

P111C: Intake air temperature / engine control module internal temperature sensor correlation

Required Sensors/Components (Main)

Intake air temperature sensor

Engine control module internal temperature sensor

Required Sensors/Components (Related)

-

Frequency of Operation

Once per driving cycle

Duration

-

MIL Operation

2 driving cycles

Sequence of Operation

None

TYPICAL ENABLING CONDITIONS

All of the following conditions are met

-

Engine switch

Off

Engine

Stall

Soak time

6, 6.5 and 7 hours

One of the following conditions is met

(a) or (b)

(a) Engine control module internal temperature

-10°C (14°F) or higher

(b) Intake air temperature

-10°C (14°F) or higher

Engine control module internal temperature sensor circuit fail (P06AD, P06AE)

Not detected

Intake air temperature sensor circuit fail (P0112, P0113)

Not detected

Soak timer fail (P2610)

Not detected

Battery voltage

8 V or higher

Starter

Off

Time after ECM power on

0.5 seconds or more

TYPICAL MALFUNCTION THRESHOLDS

Deviated engine control module internal temperature and intake air temperature

Less than -20°C (-36°F), or higher than 20°C (36°F)

CONFIRMATION DRIVING PATTERN

HINT:

  • After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

    Click here 2019 - 2022 MY Corolla Corolla Hatchback [06/2018 - 09/2022]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR

  • When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.

    Click here 2019 - 2022 MY Corolla Corolla Hatchback [06/2018 - 09/2022]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR

  1. Connect the Techstream to the DLC3.
  2. Turn the engine switch on (IG) [A].
  3. Turn the Techstream 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 Techstream on.
  9. Wait 1 seconds [C].
  10. Enter the following menus: Powertrain / Engine / Trouble Codes [D].
  11. Read the pending DTCs.

    HINT:

    • 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.

    Techstream 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

    HINT:

    • 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.
    • [B] to [D]: Normal judgment procedure.

      The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

    • When clearing the permanent DTCs, do not disconnect the cable from the battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.

CAUTION / NOTICE / HINT

HINT:

Read Freeze Frame Data using the Techstream. 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)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine / Trouble Codes.

(e) Read the DTCs.

Powertrain > Engine > Trouble Codes

Result

Proceed to

DTC P111C62 is output

A

DTC P111C62 and other DTCs are output

B

HINT:

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

(f) Record the freeze frame data.

B

GO TO DTC CHART 2019 MY Corolla Corolla Hatchback [06/2018 - 01/2019]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: DIAGNOSTIC TROUBLE CODE CHART 2020 MY Corolla Corolla Hatchback [01/2019 - 03/2019]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: DIAGNOSTIC TROUBLE CODE CHART

A

2.

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

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Using the Techstream, read the values displayed in the freeze frame data recorded in step 1.

Powertrain > Engine

Tester Display

Intake Air Temperature

Ambient Temperature

(e) Read the value displayed on the Techstream.

Standard:

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

HINT:

  • 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 2019 - 2020 MY Corolla Corolla Hatchback [06/2018 - 09/2019]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: INITIALIZATION

OK

REPLACE ECM 2019 MY Corolla Corolla Hatchback [06/2018 - 01/2019]; M20A-FKS (ENGINE CONTROL): ECM: REMOVAL 2020 MY Corolla Corolla Hatchback [01/2019 - 03/2019]; M20A-FKS (ENGINE CONTROL): ECM: REMOVAL

NG

REPLACE MASS AIR FLOW METER SUB-ASSEMBLY