If the range of the ETCS(Engine Coolant Temperature Sensor) is abnormal on each of cases, the PCM 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 less than 50 ℃(122 °F).
•
Time after engine start less than 30 sec.
•
Difference of ECT and ECT at engine start less than -2.25 ℃/27.95 °F( or Integrated air mass greater than 0.2 kg).
•
Integration of ECT deviation (Difference of ECT and ECT at start) less than 10 ℃(50 °F). | ||
Threshold Value |
•
Difference of ECT and Model ECT(low side) less than -10.5 ℃(13.1 °F). | ||
Diagnostic Time |
•
30 sec. | ||
Case 2 | DTC Strategy |
•
Rationality high side check. | |
Enable Conditions |
•
Integrated air mass greater than 1.0 kg.
•
ECT greater than 84.8 ℃(184.6 °F). | ||
Threshold Value |
•
Difference of ECT and Model ECT(high side) greater than 10 ℃(50 °F). | ||
Diagnostic Time |
•
100 sec. | ||
Case 3 | DTC Strategy |
•
ECT stuck check. | |
Enable Conditions |
•
ECT at start less than 75 ℃(167 °F).
•
(A) Vehicle speed less than 4 mph(6.4 km/h).
•
(B) Air mass flow less than 30kgh.
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Sum of (A) and (B) for 18 sec greater than or equal to 2 times.
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(C) Vehicle speed less than 25 mph(40.2 km/h).
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(D) Air mass flow greater than 30kg/h less than 500 kg/h.
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Sum of (C) and (D) for 18 sec equal to or greater than 2 times. | ||
Threshold Value |
•
Difference of Max ECT and Min ECT less than 0.8~3.0 ℃(33.44~37.4 °F). | ||
Diagnostic Time |
•
Immediate. | ||
MIL ON Condition |
•
2 driving cycles. | ||
