Engine Coolant Temperature Sensor(ECTS), installed in coolant line, senses engine coolant temperature.
With the information about engine coolant temperature, ECM performs fuel injection quantity correction, cooling fan control and glow relay operating duration control.
Especially, because ECTS signal is main variable of fuel injection quantity correction when engine is cold, sensor trouble makes starting engine difficult when engine is cold.
If engine is running when ECTS is out of order, ECM regards engine coolant temperature as 80℃. And during cranking, ECM considers engine coolant temperature as -10℃. Besides, cooling fan, which is controlled based on ECTS signal, operates at HIGH-MODE to prevent engine overheat and supplementary heater is deactivated.
P0116 is set when the signal of ECTS is not changed under Engine running condition.
Item | Detecting Condition | Possible Cause | ||
DTC Strategy |
•
Voltage monitoring |
•
ECTS circuit
•
ECTS component | ||
Enable Conditions |
•
IG KEY "ON" | |||
Threshold Value |
•
The signal of ECTS is not changed under Engine running condition. | |||
Diagnostic Time |
•
600msec. | |||
Fail Safe | Fuel cut | NO |
•
During engine operation : temperature is fixed at 90℃ | |
EGR Off | NO | |||
Fuel Limit | YES | |||
MIL | NO | |||
Temperature | - 40℃ | - 20℃ | 0℃ | 20℃ | 40℃ |
Resistance | 48.14㏀ | 15.48±1.35㏀ | 5.790㏀ | 2.45±0.14㏀ | 1.148㏀ |
Temperature | 60℃ | 80℃ | 100℃ | 110℃ | 120℃ |
Resistance | 0.586㏀ | 0.322㏀ | 0.188㏀ | 0.147±0.002㏀ | 0.116㏀ |
