Toyota Tundra (2015 year). Manual — part 1127
COMPONENT OPERATING RANGE
ECT
ECT sensor value changes in accordance with actual ECT
CONFIRMATION DRIVING PATTERN
Connect the Techstream to the DLC3.
1.
Turn the ignition switch to ON and turn the Techstream on.
2.
Enter the following menu items: Powertrain / Engine and ECT / Data List / Coolant Temp.
3.
Check that the coolant temperature is 60°C (140°F) or less.
4.
Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).
5.
Turn the ignition switch off and wait for at least 30 seconds.
6.
Turn the ignition switch to ON and turn the Techstream on [A].
7.
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 ECT sensor is
malfunctioning. It is not necessary to continue this procedure.
8.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [C].
9.
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.
10.
Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
11.
Input the DTC: P0116.
12.
Check the DTC judgment result.
TESTER
DISPLAY
DESCRIPTION
NORMAL
DTC judgment completed
System normal
13.
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0116; Engine...
HINT:
If the judgment result shows INCOMPLETE or N/A, perform steps [D] and [E].
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
HINT:
14.
Check the DTC judgment result again [E].
HINT:
If the judgment result shows INCOMPLETE or N/A, perform steps [D] and [E] again.
15.
If no pending DTC is output, perform a universal trip and check for permanent DTCs
.
HINT:
If a permanent DTC is output, the system is malfunctioning.
If no permanent DTC is output, the system is normal.
16.
INSPECTION PROCEDURE
HINT:
If DTC P0115, P0117, P0118 or P0125 is stored simultaneously with DTC P0116, the ECT sensor may have
an open or short circuit. Troubleshoot those DTCs first.
Read freeze frame data using the Techstream. 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, 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.
Result
RESULT
PROCEED TO
P0116 is output
A
P0116 and other DTCs are output
B
HINT:
If any DTCs other than P0116 are output, perform troubleshooting for those DTCs first.
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0116; Engine...
A
B
GO TO DTC CHART
2.
INSPECT WATER INLET WITH THERMOSTAT SUB-ASSEMBLY
(a) Remove the water inlet with thermostat sub-assembly
.
80 to 84°C (176 to 183°F)
HINT:
In addition to the above check, confirm that the valve is completely closed when the temperature is below
the standard.
Perform "Inspection After Repair" after replacing the engine coolant temperature sensor
.
NG
REPLACE WATER INLET WITH THERMOSTAT
SUB-ASSEMBLY
OK
REPLACE ENGINE COOLANT TEMPERATURE
SENSOR
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0116; Engine...
Last Modified: 9-16-2014
6.6 C
Doc ID: RM0000010BK0INX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P011B; Engine Coolant Temperature / Intake Air
Temperature Correlation; 2015 MY Tundra [08/2014 - ]
DTC
P011B
Engine Coolant Temperature / Intake Air Temperature Correlation
DESCRIPTION
The engine has two temperature sensors, an Engine Coolant Temperature (ECT) sensor and an Intake Air
Temperature (IAT) sensor, to detect temperature while the engine is in operation. A thermistor, whose resistance
value varies according to temperature, is built into each sensor. When the temperature is low, the resistance of
the thermistor increases. When the temperature is high, the resistance drops. These variations in resistance are
transmitted to the ECM as voltage changes. Based on these temperature signals output from the sensors, the
ECM determines the fuel injection time and the ignition timing to control the engine.
DTC
CODE
DTC DETECTION CONDITION
TROUBLE AREA
P011B
a.
7 hours or more have elapsed from engine stop on the
previous trip.
b.
15 seconds after a cold engine start.
c.
The minimum Intake Air Temperature (IAT) after the engine
starts is higher than -10°C (14°F).
d.
The average Engine Coolant Temperature (ECT) before the
engine starts is higher than -10°C (14°F).
e.
f.
IAT
sensor
ECT
sensor
ECM
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P011B; Engin...
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