P0116 ECT Sensor 1 Circuit Range/Performance Problem
1.
ECT sensor 1 check:
ECT sensor 1 check
?1.
Turn the vehicle to the ON mode.
?2.
Check the parameter(s) below with the HDS.
Signal
Threshold
Current conditions
Values
Unit
Values
Unit
ECT SENSOR 1
More than 176
°F
ECT SENSOR 1
More than 80
°C
Do the current condition(s) match the threshold?
YES
Note the value of ECT SENSOR 1, then go to step 3.
NO
Note the value of ECT SENSOR 1, then go to step 2.
2.
Problem verification (low temperature):
Problem verification (low temperature)
?1.
Note the value of ECT SENSOR 1 in the DATA LIST with the HDS.
Signal
Current conditions
Values
Unit
ECT SENSOR 1
?2.
Start the engine.
?3.
Hold the engine speed at 3,000 rpm without load (CVT in P or N, M/T in neutral) until the radiator fan comes on, then let it idle.
?4.
Check ECT SENSOR 1 in the DATA LIST with the HDS.
Signal
Current conditions
Values
Unit
ECT SENSOR 1
Does ECT SENSOR 1 change 18 °F (10 °C) or more?
YES
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at ECT sensor 1 and the PCM. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot.?
Open the hood, and let the engine cool for 3 hours.
?3.
Turn the vehicle to the ON mode.
?4.
Check ECT SENSOR 1 in the DATA LIST with the HDS.
Signal
Current conditions
Values
Unit
ECT SENSOR 1
Does ECT SENSOR 1 change 18 °F (10 °C) or more?
YES
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at ECT sensor 1 and the PCM. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot.?