Engine coolant temperature compensation inspection

Connect the M-MDS to the DLC-2.
Select the following PIDs: (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.0)] .)
- ECT
- IAT
- RPM
Verify that the engine is cold, then start the engine.
Verify that the engine speed decreases as the engine warms up.
- If the engine speed does not decrease or decreases slowly, inspect the following:
- ECT sensor No. 1 and related wiring harness (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION .)
- Throttle body and related wiring harness (See THROTTLE BODY INSPECTION .)

RELATED PIDS

Item (definition)	Unit/Condition	Definition	Condition/Specification (Reference)
ECT	°C, °F	Engine coolant temperature input from ECT sensor No. 1	Displays ECT
ECT	V	ECT sensor No. 1 voltage	Ignition switched ON (engine off) ECT is 92 °C {198 °F}: Approx. 0.65 V Idle (after warm up) ECT is 93 °C {199 °F}: Approx. 0.64 V Racing (Engine speed is 2, 000 rpm) ECT is 92 °C {198 °F}: Approx. 0.66 V Racing (Engine speed is 4, 000 rpm) ECT is 93 °C {199 °F}: Approx. 0.64 V
IAT	°C, °F	Intake air temperature (No. 1) input from IAT sensor No. 1	Displays IAT (No. 1)
IAT	V	IAT sensor No. 1 voltage	IAT is 60 °C {140 °F}: Approx. 1.13 V IAT is 63 °C {145 °F}: Approx. 1.07 V IAT is 65 °C {149 °F}: Approx. 1.01 V
RPM	RPM	Engine speed	Displays engine speed