If the range of the ETCS(Engine Coolant Temperature Sensor) is abnormal on each of cases, the ECM/PCM sets DTC P0116.
Item | Detecting Condition | Possible Cause | |
DTC Strategy | Case1 |
•
Signal Stuck Low | 1. Poor connection 2. ECTS |
Case2 |
•
Signal Stuck High | ||
Case3 |
•
Plausibility check | ||
Enable Conditions | Case1 |
•
ECT at engine start >= 76°C
•
6 < Battery voltage < 16V | |
Case2 |
•
ECT at engine start >= 76°C
•
6 < Battery voltage < 16V
•
-10 < IAT at engine start < 70°C
•
Ambient Air Temperature (model) > -10°C
•
(cumulative) Part Load driving condition : ( Engine speed >1400 & Vehicle speed>22mph & Mass air flow >5.5 g/sec ) > 250sec
•
(cumulative) Low Load driving condition (Trailing Fuel Cut Off or Idle with vehicle Speed<12mph ) > 200sec | ||
Case3 |
•
Engine stop time > 480min
•
-30 < IAT at engine start < 50℃
•
Engine operating state out of start or Number of revolutions in start phase > 2rev | ||
Threshold Value | Case1 |
•
Measured ECT increase < 0.75..35°C versus ECT at start | |
Case2 |
•
ECT variation since engine start < 2.25°C | ||
Case3 |
•
[In case of IAT_ST >= 20℃ ECT_ST - IAT_ST > 20℃ In case of IAT_ST < 20℃ ECT_ST] > 40℃ or ECT_ST - IAT_ST < -20℃ | ||
Diagnostic Time |
•
Immediate | ||
MIL ON Condition |
•
2 driving cycles | ||
