If the range of the ETCS(Engine Coolant Temperature Sensor) is abnormal on each of cases, the ECM sets DTC P0116.
Item | Detecting Condition | Possible Cause | |
Case 1 | DTC Strategy |
•
Rationality low side check | 1. Poor connection 2. ECTS |
Enable Conditions |
•
No block heater detection
•
ECT at engine start < 50 ℃(122 °F)
•
Time after engine start < 30 sec.
•
ECT - ECT at engine start < -2.25 ℃/27.95 °F( or Integrated air mass > 0.2 kg
•
Integration of ECT deviation (ECT - ECT at start) < 10 ℃(50 °F) | ||
Threshold Value |
•
ECT – Model ECT(low side) < -10.5 ℃(13.1 °F) | ||
Diagnostic Time |
•
30 sec. | ||
Case 2 | DTC Strategy |
•
Rationality high side check | |
Enable Conditions |
•
Integrated air mass > 1.0 kg
•
ECT > 84.8 ℃(184.64 °F) | ||
Threshold Value |
•
ECT – Model ECT(high side) > 10 ℃(50 °F) | ||
Diagnostic Time |
•
100 sec. | ||
Case 3 | DTC Strategy |
•
ECT stuck check | |
Enable Conditions |
•
ECT at start < 75 ℃(167 °F)
•
(A) Vehicle speed < 4 mph
•
(B) Air mass flow < 30 kg
•
(A) + (B) for 18 sec ≥ 4 times
•
(C) Vehicle speed > 25 mph(40.23 km/h)
•
30 kg/h < (D) Air mass flow < 500 kg/h
•
(C) + (D) for 18 sec ≥ 2 times | ||
Threshold Value |
•
Max ECT - Min ECT < 0.8~3.0 ℃(33.44~37.4 °F) | ||
Diagnostic Time |
•
Immediate | ||
MIL ON Condition |
•
2 driving cycles | ||
