- DTC judgment completed
- System normal
| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM100000001HTM5 |
| Model Year Start: 2020 | Model: Corolla Hatchback | Prod Date Range: [03/2019 - ] |
| Title: M20A-FKS (ENGINE CONTROL): SFI SYSTEM: P111C62; Control Module Internal Temperature Sensor/Intake Air Temperature Sensor Signal Compare Failure; 2020 - 2025 MY Corolla Corolla Hatchback [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):
|
|
Comes on |
DTC stored |
|
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 |
- |
|
Ignition 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.
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![2019 - 2022 MY Corolla Corolla Hatchback [06/2018 - 09/2022]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR](/t3Portal/stylegraphics/info.gif)
-
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
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- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON [A].
- Turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the ignition switch off.
- With the engine stopped, leave the vehicle as is for 7.5 hours or more [B].
- Turn the ignition switch to ON.
- Turn the Techstream on.
- Wait 1 seconds [C].
- Enter the following menus: Powertrain / Engine / Trouble Codes [D].
-
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.
- Enter the following menus: Powertrain / Engine / Utility / All Readiness.
- Input the DTC: P111C62.
-
Check the DTC judgment result.
Techstream Display
Description
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 ignition switch to ON.
(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
|
|
|
2. |
CHECK FREEZE FRAME DATA (INTAKE AIR TEMPERATURE AND AMBIENT TEMPERATURE) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(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.
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| OK |
|
REPLACE ECM
|
| NG |
|
|
|