- DTC judgment completed
- System normal
| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM100000001GH9Q |
| Model Year Start: 2020 | Model: Corolla | Prod Date Range: [01/2019 - 03/2019] |
| Title: 2ZR-FAE (ENGINE CONTROL): SFI SYSTEM: P0116; Engine Coolant Temperature Circuit Range / Performance; 2020 MY Corolla [01/2019 - 03/2019] | ||
|
DTC |
P0116 |
Engine Coolant Temperature Circuit Range / Performance |
DESCRIPTION
Refer to DTC P0115.
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![2020 MY Corolla [01/2019 - 03/2019]; 2ZR-FAE (ENGINE CONTROL): SFI SYSTEM: P0115,P0117,P0118; Engine Coolant Temperature Circuit+](/t3Portal/stylegraphics/info.gif)
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Memory |
|---|---|---|---|---|---|
|
P0116 |
Engine Coolant Temperature Circuit Range / Performance |
Either of the following conditions is met (2 trip detection logic):
|
|
Comes on |
DTC stored |
MONITOR DESCRIPTION
Engine Coolant Temperature Sensor Cold Start Monitor
When a cold engine start is performed and then the engine is warmed up, if the engine coolant temperature sensor value does not change, it is determined that a malfunction has occurred. If this is detected in 2 consecutive driving cycles, the MIL is illuminated and this DTC is stored.
Engine Coolant Temperature Sensor Soak Monitor
If the engine coolant temperature sensor value does not change after the warmed up engine is stopped and then the next cold engine start is performed, it is determined that a malfunction has occurred. If this is detected in 2 consecutive driving cycles, the MIL is illuminated and this DTC is stored.
MONITOR STRATEGY
|
Related DTCs |
P0116: Engine coolant temperature sensor rationality (cold start monitor) P0116: Engine coolant temperature sensor rationality (soak monitor) |
|
Required Sensors/Components (Main) |
Engine coolant temperature sensor |
|
Required Sensors/Components (Related) |
- |
|
Frequency of Operation |
Once per driving cycle |
|
Duration |
-: Cold start monitor 10 seconds: Soak monitor |
|
MIL Operation |
2 driving cycles |
|
Sequence of Operation |
None |
TYPICAL ENABLING CONDITIONS
Cold Start Monitor
|
All of the following conditions are met |
- |
|
Battery voltage |
10.5 V or higher |
|
Time after engine start |
1 second or more |
|
Engine coolant temperature at engine start |
Less than 60°C (140°F) |
|
Soak time |
0 seconds or more |
|
Accumulated mass air flow |
4283 g or more |
|
Fuel cut |
Off |
|
Engine coolant temperature sensor circuit fail (P0115, P0117, P0118, P0125) |
Not detected |
|
Intake air temperature sensor circuit fail (P0112, P0113) |
Not detected |
|
Thermostat fail (P0128) |
Not detected |
|
Difference between engine coolant temperature at engine start and intake air temperature |
Less than 40°C (72°F) |
Soak Monitor
|
All of the following conditions are met |
- |
|
Battery voltage |
10.5 V or higher |
|
Engine |
Running |
|
Soak time |
5 hours or more |
|
Either of the following conditions is met |
(a) or (b) |
|
(a) Engine coolant temperature |
60°C (140°F) or higher |
|
(b) Accumulated mass air flow |
8766 g or more |
|
Engine coolant temperature sensor circuit fail (P0115, P0117, P0118, P0125) |
Not detected |
|
Thermostat fail (P0128) |
Not detected |
|
Soak timer fail (P2610) |
Not detected |
TYPICAL MALFUNCTION THRESHOLDS
Cold Start Monitor
|
Engine coolant temperature sensor value change |
Less than 5°C (9°F) |
Soak Monitor
|
Difference between current engine coolant temperature sensor value and previous engine coolant temperature sensor value when engine stopped |
Less than 5°C (9°F) (varies with engine coolant temperature of last trip engine stop) |
COMPONENT OPERATING RANGE
|
Engine coolant temperature |
Engine coolant temperature sensor value changes in accordance with actual engine coolant temperature |
CONFIRMATION DRIVING PATTERN
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON.
- Turn the Techstream on.
- Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / Coolant Temp.
- Check that the engine coolant temperature is 60°C (140°F) or less.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the ignition switch off and wait for at least 30 seconds.
- Turn the ignition switch to ON [A].
- Turn the Techstream on.
-
Start the engine and idle it for 5 minutes or more [B].
HINT:
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.
- Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [C].
-
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 and ECT / Utility / All Readiness.
- Input the DTC: P0116.
-
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
N/A
- Unable to perform DTC judgment
- Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform steps [D] through [E].
-
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.
HINT:
In the event of the drive pattern being interrupted (possibly due to factors such as traffic conditions), the drive pattern can be resumed.
-
Check the DTC judgment result again [E].
HINT:
If the judgment result shows INCOMPLETE or N/A, perform steps [D] through [E] again.
-
If no pending DTC is output, perform a universal trip and check for permanent DTCs.
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HINT:
- If a permanent DTC is output, the system is malfunctioning.
- If no permanent DTC is output, the system is normal.
CAUTION / NOTICE / HINT
HINT:
- If any of DTCs P0115, P0117, P0118 or P0125 are output simultaneously with DTC P0116, 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 Techstream. Enter the following menus: Powertrain / Engine and ECT / Data List / Coolant Temp. If the Coolant Temp value is lower than the actual engine coolant temperature, the engine coolant temperature sensor 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 first.
- 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 DTC P0116) |
(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 and ECT / Trouble Codes.
(e) Read the DTCs.
Powertrain > Engine and ECT > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
DTC P0116 is output |
A |
|
DTC P0116 and other DTCs are output |
B |
HINT:
If any DTCs and other than P0116 are output, troubleshoot those DTCs first.
| B |
|
|
|
2. |
INSPECT THERMOSTAT |
(a) Inspect the thermostat (thermostat opening temperature).
Click here
HINT:
Perform "Inspection After Repair" after replacing the engine coolant temperature sensor.
Click here
| OK |
|
| NG |
|
|
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