DTC Code | DTC Name |
---|---|
P0115 | Engine Coolant Temperature Circuit |
P0117 | Engine Coolant Temperature Circuit Low Input |
P0118 | Engine Coolant Temperature Circuit High Input |
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 connection to the ECM is the same as the intake air temperature sensor.
If DTC P0115, P0117 or P0118 is stored, the ECM operates the fail-safe function in which the engine coolant temperature is assumed to be 80°C (176°F).
DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory |
---|---|---|---|---|---|
P0115 | Engine Coolant Temperature Circuit | Open or short in the engine coolant temperature sensor circuit for 0.5 seconds (1 trip detection logic). |
|
Comes on | DTC stored |
P0117 | Engine Coolant Temperature Circuit Low Input | Short in the engine coolant temperature sensor circuit for 0.5 seconds (1 trip detection logic). |
|
Comes on | DTC stored |
P0118 | Engine Coolant Temperature Circuit High Input | Open in the engine coolant temperature sensor circuit for 0.5 seconds (1 trip detection logic). |
|
Comes on | DTC stored |
DTC No. | Data List |
---|---|
P0115 | Coolant Temp |
P0117 | |
P0118 |
If DTC P0115, P0117 and/or P0118 is stored, the following symptoms may appear:
Misfire
Combustion noise
Black smoke
White smoke
Lack of power
When DTC P0115, P0117 and/or P0118 is stored, check the engine coolant temperature by entering the following menus: Powertrain / Engine and ECT / Data List / All Data / Coolant Temp.
Temperature Displayed | Malfunction |
---|---|
-40°C (-40°F) | Open circuit |
140°C (284°F) | Short circuit |
CONFIRMATION DRIVING PATTERN
DTC No. | DTC Detection Drive Pattern |
---|---|
P0115 | Ignition switch ON for 0.5 seconds |
P0117 | |
P0118 |
WIRING DIAGRAM
*a | Engine Coolant Temperature Sensor |
CAUTION / NOTICE / HINT
After replacing the ECM, the new ECM needs registration (Click here) and initialization (Click hereНажмите здесь).
Read freeze frame data using the GTS. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.
PROCEDURE
READ VALUE USING GTS (COOLANT TEMP)
Connect the GTS to the DLC3.
Turn the ignition switch to ON and turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Coolant Temp.
Powertrain > Engine and ECT > Data ListTester Display |
---|
Coolant Temp |
Read the value.
OK |
---|
60 to 90°C (140 to 194°F) with warm engine. |
Result | ||||||||
---|---|---|---|---|---|---|---|---|
|
If there is an open circuit, the GTS indicates -40°C (-40°F).
If there is a short circuit, the GTS indicates 140°C (284°F).
B | Нажмите здесь |
C | Нажмите здесь |
GO TO STEP 11 |
A |
READ VALUE USING GTS (CHECK FOR OPEN IN WIRE HARNESS)
Disconnect the engine coolant temperature sensor connector.
*1 | Engine Coolant Temperature Sensor |
*2 | ECM |
*a |
Front view of wire harness connector (to Engine Coolant Temperature Sensor) |
Connect terminals 1 and 2 of the engine coolant temperature sensor connector on the wire harness side.
Connect the GTS to the DLC3.
Turn the ignition switch to ON and turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Coolant Temp.
Powertrain > Engine and ECT > Data ListTester Display |
---|
Coolant Temp |
Read the value.
Standard value |
---|
140°C (284°F) |
Result | |||
---|---|---|---|
|
NG | Нажмите здесь |
OK |
CONFIRM GOOD CONNECTION TO SENSOR. IF OK, REPLACE ENGINE COOLANT TEMPERATURE SENSOR.
Replace the engine coolant temperature sensor.
Click hereНажмите здесь
Result | ||
---|---|---|
|
NEXT | Нажмите здесь |
GO TO STEP 11 |
CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM)
Disconnect the engine coolant temperature sensor connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | |||||||||
---|---|---|---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
NG | Нажмите здесь |
OK |
CONFIRM GOOD CONNECTION TO ECM. IF OK, REPLACE ECM.
Replace the ECM.
Click hereНажмите здесь
Result | ||
---|---|---|
|
NEXT | Нажмите здесь |
GO TO STEP 11 |
REPAIR OR REPLACE HARNESS OR CONNECTOR
Repair or replace the harness or connector.
Result | ||
---|---|---|
|
NEXT | Нажмите здесь |
GO TO STEP 11 |
READ VALUE USING GTS (CHECK FOR SHORT IN WIRE HARNESS)
Disconnect the engine coolant temperature sensor connector.
*1 | Engine Coolant Temperature Sensor |
*2 | ECM |
Connect the GTS to the DLC3.
Turn the ignition switch to ON and turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Coolant Temp.
Powertrain > Engine and ECT > Data ListTester Display |
---|
Coolant Temp |
Read the value.
OK |
---|
-40°C (-40°F) |
Result | |||
---|---|---|---|
|
NG | Нажмите здесь |
OK |
REPLACE ENGINE COOLANT TEMPERATURE SENSOR
Replace the engine coolant temperature sensor.
Click hereНажмите здесь
Result | ||
---|---|---|
|
NEXT | Нажмите здесь |
GO TO STEP 11 |
CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM)
Disconnect the engine coolant temperature sensor connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
NG | Нажмите здесь |
GO TO STEP 6 |
OK |
REPLACE ECM
Replace the ECM.
Click hereНажмите здесь
Result | ||
---|---|---|
|
NEXT |
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTCs.
Powertrain > Engine and ECT > Clear DTCsTurn the ignition switch to ON for 1 second.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Confirm that the DTC is not output.
Powertrain > Engine and ECT > Trouble CodesResult | ||
---|---|---|
|
NEXT |
END |