Last Modified: 04-05-2023 |
6.11:8.1.0 |
Doc ID: RM100000000VIAL |
Model Year Start: 2016 |
Model: Sienna |
Prod Date Range: [12/2015 - 08/2016] |
Title: 2GR-FE (ENGINE CONTROL): SFI SYSTEM: P0115,P0117,P0118; Engine Coolant Temperature Circuit; 2016 MY Sienna [12/2015 - 08/2016] |
DTC
|
P0115
|
Engine Coolant Temperature Circuit
|
DTC
|
P0117
|
Engine Coolant Temperature Circuit Low Input
|
DTC
|
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 its connection to the ECM are similar to those of the intake air temperature sensor.
HINT:
When any of DTCs P0115, P0117 or P0118 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.
|
DTC Detection Condition
|
Trouble Area
|
P0115
|
Open or short in engine coolant temperature sensor circuit for 0.5 seconds
(1 trip detection logic)
|
-
Open or short in engine coolant temperature sensor circuit
-
Engine coolant temperature sensor
|
P0117
|
Short in engine coolant temperature sensor circuit for 0.5 seconds
(1 trip detection logic)
|
-
Short in engine coolant temperature sensor circuit
-
Engine coolant temperature sensor
|
P0118
|
Open in engine coolant temperature sensor circuit for 0.5 seconds
(1 trip detection logic)
|
-
Open in engine coolant temperature sensor circuit
-
Engine coolant temperature sensor
|
HINT:
When any of these DTCs are output, check the engine coolant temperature by entering the following menus on the Techstream: Powertrain / Engine / Data List / Coolant Temp.
Temperature Displayed
|
Malfunction
|
-40°C (-40°F)
|
Open circuit
|
Higher than 135°C (275°F)
|
Short circuit
|
MONITOR DESCRIPTION
-
The engine coolant temperature sensor is used to monitor the engine coolant temperature. The engine coolant temperature sensor has a thermistor with a resistance that varies according to the temperature of the engine coolant. When the coolant temperature becomes low, the resistance in the thermistor increases. When the temperature becomes high, the resistance drops. These variations in resistance are reflected in the output voltage from the sensor. The ECM monitors the sensor voltage and uses this value to calculate the engine coolant temperature. When the sensor output voltage deviates from the normal operating range, the ECM interprets this as a malfunction in the engine coolant temperature sensor and stores a DTC.
-
Example:
-
If the sensor output voltage is higher than 4.91 V for 0.5 seconds or more, the ECM determines that there is an open in the engine coolant temperature sensor circuit, and stores DTC P0118. Conversely, if the voltage output is less than 0.14 V for 0.5 seconds or more, the ECM determines that there is a short in the sensor circuit, and stores DTC P0117.
-
If the malfunction is not repaired successfully, a DTC is stored 0.5 seconds after the engine is next started.
MONITOR STRATEGY
Related DTCs
|
P0115: Engine coolant temperature sensor range check (Chattering)
P0117: Engine coolant temperature sensor range check (Low voltage)
P0118: Engine coolant temperature sensor range check (High voltage)
|
Required Sensors/Components (Main)
|
Engine coolant temperature sensor
|
Required Sensors/Components (Sub)
|
-
|
Frequency of Operation
|
Continuous
|
Duration
|
0.5 seconds
|
MIL Operation
|
Immediately
|
Sequence of Operation
|
None
|
TYPICAL ENABLING CONDITIONS
Monitor runs whenever following DTCs are not present
|
None
|
TYPICAL MALFUNCTION THRESHOLDS
P0115
Engine coolant temperature sensor voltage
|
Less than 0.14 V, or higher than 4.91 V [Higher than 135°C (275°F), or less than -60°C (-76°F)]
|
P0117
Engine coolant temperature sensor voltage
|
Less than 0.14 V [Higher than 135°C (275°F)]
|
P0118
Engine coolant temperature sensor voltage
|
Higher than 4.91 V [Less than -60°C (-76°F)]
|
COMPONENT OPERATING RANGE
Engine coolant temperature sensor voltage
|
0.14 V or higher, and 4.91 V or less [-60°C (-76°F) or higher, and 135°C (275°F) or less]
|
CONFIRMATION DRIVING PATTERN
-
Connect the Techstream to the DLC3.
-
Turn the ignition switch to ON and turn the Techstream on.
-
Clear DTCs (even if no DTCs are stored, perform the clear DTC procedure) (See page
).
-
Turn the ignition switch off and wait for at least 30 seconds.
-
Turn the ignition switch to ON and turn the Techstream on.
-
Wait 0.5 seconds or more.
-
Enter the following menus: Powertrain / Engine / Trouble Codes.
-
Read 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: P0115, P0117 or P0118.
-
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
|
N/A
|
-
Unable to perform DTC judgment
-
Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit
|
-
If the judgment result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs (See page
).
HINT:
-
If a permanent DTC is output, the system is malfunctioning.
-
If no permanent DTC is output, the system is normal.
WIRING DIAGRAM
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.
-
If DTC P0117 is stored, check that the engine does not overheat (the DTC P0117 may be stored due to engine overheating).
PROCEDURE
1.
|
READ VALUE USING TECHSTREAM (COOLANT TEMP)
|
(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 / Data List / Coolant Temp.
(e) Read the value displayed on the Techstream.
OK:
Same as actual engine coolant temperature.
Result
Result
|
Proceed to
|
Displayed temperature is -40°C (-40°F)
|
A
|
Displayed temperature is higher than 135°C (275°F)
|
B
|
Same as actual engine coolant temperature
|
C
|
HINT:
-
If there is an open circuit, the Techstream indicates -40°C (-40°F).
-
If there is a short circuit, the Techstream indicates higher than 135°C (275°F).
A
|
|
|
2.
|
READ VALUE USING TECHSTREAM (CHECK FOR OPEN IN WIRE HARNESS)
|
(a) Confirm good connection at the engine coolant temperature sensor connector.
Text in Illustration
*1
|
Engine Coolant Temperature Sensor
|
*2
|
ECM
|
*a
|
Front view of wire harness connector
(to Engine Coolant Temperature Sensor)
|
-
|
-
|
(b) Disconnect the engine coolant temperature sensor connector.
(c) Connect terminals 2 and 1 of the engine coolant temperature sensor connector on the wire harness side.
(d) Connect the Techstream to the DLC3.
(e) Turn the ignition switch to ON.
(f) Turn the Techstream on.
(g) Enter the following menus: Powertrain / Engine / Data List / Coolant Temp.
(h) Read the value displayed on the Techstream.
Standard value:
Higher than 135°C (275°F)
HINT:
Perform "Inspection After Repair" after replacing the engine coolant temperature sensor (See page
).
NG
|
|
|
3.
|
CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM)
|
(a) Disconnect the B5 engine coolant temperature sensor connector.
(b) Disconnect the B1 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open):
Tester Connection
|
Condition
|
Specified Condition
|
B5-2 - B1-76 (THW)
|
Always
|
Below 1 Ω
|
B5-1 - B1-97 (ETHW)
|
Always
|
Below 1 Ω
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
4.
|
READ VALUE USING TECHSTREAM (CHECK FOR SHORT IN WIRE HARNESS)
|
(a) Disconnect the engine coolant temperature sensor connector.
Text in Illustration
*1
|
Engine Coolant Temperature Sensor
|
*2
|
ECM
|
|
|
(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 Temp.
(f) Read the value displayed on the Techstream.
Standard value:
-40°C (-40°F)
HINT:
Perform "Inspection After Repair" after replacing the engine coolant temperature sensor (See page
).
NG
|
|
|
5.
|
CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM)
|
(a) Disconnect the B5 engine coolant temperature sensor connector.
(b) Disconnect the B1 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Short):
Tester Connection
|
Condition
|
Specified Condition
|
B5-2 or B1-76 (THW) - Body ground
|
Always
|
10 kΩ or higher
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
|