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
Do the current condition(s) match the threshold?
YES
Note the value of ECT SENSOR 1, then go to step 3.
NO
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 (in P or N) 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.?