Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM100000001HTGQ |
Model Year Start: 2020 |
Model: Corolla Hatchback |
Prod Date Range: [03/2019 - 03/2023] |
Title: M20A-FKS (ENGINE CONTROL): SFI SYSTEM: P011511; Engine Coolant Temperature Sensor 1 Circuit Short to Ground; 2020 - 2023 MY Corolla Corolla Hatchback [03/2019 - 03/2023] |
DTC
|
P011511
|
Engine Coolant Temperature Sensor 1 Circuit Short to Ground
|
DESCRIPTION
A thermistor, whose resistance value varies according to the engine coolant temperature, is built into the engine coolant temperature sensor. The structure of the sensor and its connection to the ECM are the same as those of the intake air temperature sensor.
Refer to DTC P011011.
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HINT:
When DTC P011511 is stored, the ECM enters fail-safe mode. During fail-safe mode, the engine coolant temperature is estimated to be 80°C (176°F) by the ECM. Fail-safe mode continues until a pass condition is detected.
DTC No.
|
Detection Item
|
DTC Detection Condition
|
Trouble Area
|
MIL
|
Memory
|
Note
|
P011511
|
Engine Coolant Temperature Sensor 1 Circuit Short to Ground
|
Diagnosis condition:
Abnormal condition:
-
The engine coolant temperature sensor output voltage is less than 0.142 V.
Malfunction time:
Trip logic:
Detection conditions:
Sensors/components used for detection:
-
Engine coolant temperature sensor
|
-
Short in engine coolant temperature sensor circuit
-
Engine coolant temperature sensor
-
ECM
|
Comes on
|
DTC stored
|
-
SAE Code: P0117
-
DTC for Mexico Models: Applies
|
HINT:
When this DTC is output, check the engine coolant temperature in the Data List. Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature.
DTC No.
|
Coolant Temperature
|
Malfunction
|
P011511
|
Higher than 135°C (275°F)
|
Short to ground in THW circuit
|
If the Data List values is normal it may be due to a temporary recovery from the malfunction condition. Check for intermittent problems.
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MONITOR DESCRIPTION
When the ignition switch is turned ON and the output voltage of the engine coolant temperature sensor is less than 0.142 V for 0.5 seconds or more, the ECM determines that the engine coolant temperature sensor circuit is malfunctioning and illuminates the MIL and stores a DTC.
MONITOR STRATEGY
Related DTCs
|
P0117: Engine coolant temperature sensor range check (low voltage)
|
Required Sensors/Components (Main)
|
Engine coolant temperature sensor
|
Required Sensors/Components (Related)
|
-
|
Frequency of Operation
|
Continuous
|
Duration
|
0.5 seconds
|
MIL Operation
|
Immediate
|
Sequence of Operation
|
None
|
TYPICAL ENABLING CONDITIONS
Monitor runs whenever the following DTCs are not stored
|
None
|
All of the following conditions are met
|
-
|
Battery voltage
|
8 V or higher
|
Ignition switch
|
ON
|
Starter
|
Off
|
TYPICAL MALFUNCTION THRESHOLDS
Engine coolant temperature sensor voltage [Engine coolant temperature]
|
Less than 0.142 V [Higher than 135°C (275°F)]
|
CONFIRMATION DRIVING PATTERN
-
Connect the Techstream to the DLC3.
-
Turn the ignition switch to ON.
-
Turn the Techstream on.
-
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.
-
Wait 0.5 seconds or more [B].
-
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.
-
Proceed to the next screen and enter the DTC to be checked.
-
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
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
HINT:
-
If DTC P011511 is stored, check that the engine does not overheat (DTC P011511 may be stored due to engine overheating).
-
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.
|
READ VALUE USING TECHSTREAM (COOLANT TEMPERATURE)
|
*1
|
Engine Coolant Temperature Sensor
|
*2
|
ECM
|
(a) Disconnect the engine coolant temperature sensor connector.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON.
(d) Turn the Techstream on.
(e) Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature.
Powertrain > Engine > Data List
Tester Display
|
Coolant Temperature
|
(f) According to the display on the Techstream, read the Data List.
OK:
Techstream Display
|
Specified Condition
|
Coolant Temperature
|
-40°C (-40°F)
|
HINT:
Perform "Inspection After Repair" after replacing the engine coolant temperature sensor.
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NG
|
|
|
2.
|
CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM)
|
(a) Disconnect the engine coolant temperature sensor connector.
(b) Disconnect the ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
C48-2 or C76-125 (THW) - Body ground and other terminals
|
Always
|
10 kΩ or higher
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
|