- DTC judgment completed
- System normal
| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM1000000026EFG |
| Model Year Start: 2023 | Model: Corolla | Prod Date Range: [09/2022 - ] |
| Title: 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: P01152A; Engine Coolant Temperature Sensor 1 Signal Stuck in Range; 2023 - 2025 MY Corolla Corolla HV [09/2022 - ] | ||
|
DTC |
P01152A |
Engine Coolant Temperature Sensor 1 Signal Stuck in Range |
DESCRIPTION
Refer to DTC P011511.
Click here
![2023 - 2025 MY Corolla Corolla HV [09/2022 - ]; 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: P011511; Engine Coolant Temperature Sensor 1 Circuit Short to Ground+](/t3Portal/stylegraphics/info.gif)
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Memory |
Note |
|---|---|---|---|---|---|---|
|
P01152A |
Engine Coolant Temperature Sensor 1 Signal Stuck in Range |
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 |
10 seconds: Soak monitor for Mexico models -: Others |
|
MIL Operation |
2 driving cycles |
|
Sequence of Operation |
None |
TYPICAL ENABLING CONDITIONS
Cold Start Monitor
|
All of the following conditions are met |
- |
|
Auxiliary 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 second or more: except Mexico Models 5 hours or more: for Mexico Models |
|
Accumulated mass air flow |
8716 g or more |
|
Engine |
Running |
|
Fuel cut |
Off |
|
Intake air temperature sensor circuit fail (P0112, P0113) |
Not detected |
|
Engine coolant temperature sensor circuit fail (P0117, P0118) |
Not detected |
|
Engine coolant pump circuit fail (P261B, P261C, P261D) |
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 |
- |
|
Auxiliary battery voltage |
10.5 V or higher |
|
Last trip condition |
Engine running |
|
Soak time |
5 hours or more |
|
Either of the following conditions is met |
1 or 2 |
|
1. Engine coolant temperature |
60°C (140°F) or higher |
|
2. Accumulated mass air flow |
17432 g or more |
|
Engine coolant pump circuit fail (P261B, P261C, P261D) |
Not detected |
|
Engine coolant temperature sensor circuit fail (P0117, P0118) |
Not detected |
|
Soak timer fail (P2610) |
Not detected |
|
Engine coolant pump circuit fail (P261B, P261C, P261D) |
Not detected |
TYPICAL MALFUNCTION THRESHOLDS
Cold Start Monitor
|
Engine coolant temperature sensor value change |
Less than 5°C (9°F): except Mexico Models Less than 1.25°C (2°F): for Mexico Models |
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): except Mexico Models Less than 1.25°C (2°F): for Mexico Models |
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
-
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG).
- Turn the Techstream on.
- Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature.
- 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 power switch off and wait for at least 30 seconds.
- Turn the power switch on (IG) [A].
- Turn the Techstream on.
-
Put the engine in Inspection Mode (Maintenance Mode).
Click here
-
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. (except Mexico models)
- If the engine coolant temperature does not change by 1.25°C (2°F) or higher, the engine coolant temperature sensor is malfunctioning. It is not necessary to continue this procedure. (for Mexico models)
- Enter the following menus: Powertrain / Engine / 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 / Utility / All Readiness.
- Input the DTC: P01152A.
-
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 [D] through [E].
-
[A] to [C]: 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 auxiliary battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.
-
With the engine running, 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.
- If the engine stops, further depress the accelerator pedal to restart the engine.
-
Check the DTC judgment result again [E].
HINT:
- If the judgment result is NORMAL, the system is normal.
- If the judgment result is ABNORMAL, the system is malfunctioning.
-
[A] to [E]: 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 auxiliary 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
NOTICE:
-
Vehicle Control History may be stored in the hybrid vehicle control ECU if the engine is malfunctioning. Certain vehicle condition information is recorded when Vehicle Control History is stored. Reading the vehicle conditions recorded in both the freeze frame data and Vehicle Control History can be useful for troubleshooting.
Click here
(Select Powertrain in Health Check and then check the time stamp data.)
Click here
-
If any "Engine Malfunction" Vehicle Control History item has been stored in the hybrid vehicle control ECU, make sure to clear it. However, as all Vehicle Control History items are cleared simultaneously, if any Vehicle Control History items other than "Engine Malfunction" are stored, make sure to perform any troubleshooting for them before clearing Vehicle Control History.
Click here
HINT:
- If any of DTCs P011511, P011515 or P012500 are output simultaneously with DTC P01152A, the engine coolant temperature sensor may have an open or a short circuit. Troubleshoot those DTCs first.
- When this DTC is output, check the engine coolant temperature using the Techstream. Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature. If the value of Coolant Temperature 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 their connection condition) 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 P01152A) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power 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 P01152A is output |
A |
|
DTC P01152A and other DTCs are output |
B |
HINT:
If any DTCs other than P01152A are output, troubleshoot those DTCs first.
| B |
|
|
|
2. |
INSPECT WATER INLET WITH THERMOSTAT SUB-ASSEMBLY |
(a) Inspect the water inlet with thermostat sub-assembly (thermostat opening temperature).
Click here
HINT:
Perform "Inspection After Repair" after replacing the engine coolant temperature sensor.
Click here
| OK |
|
REPLACE ENGINE COOLANT TEMPERATURE SENSOR
|
| NG |
|
|
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