Kia Cadenza: Engine Control System / CVVT Oil Temperature Sensor (OTS) Description and Operation

Kia Cadenza YG 2016-2025 Service Manual / Engine Control / Fuel System / Engine Control System / CVVT Oil Temperature Sensor (OTS) Description and Operation

Description

Continuous Variable Valve Timing (CVVT) system advances or retards the valve timing of the intake and exhaust valve in accordance with the ECM control signal which is calculated by the engine speed and load.

By controlling CVVT, the valve over-lap or under-lap occurs, which makes better fuel economy and reduces exhaust gases (NOx, HC) and improves engine performance through reduction of pumping loss, internal EGR effect, improvement of combustion stability, improvement of volumetric efficiency, and increase of expansion work.

This system consist of

- the CVVT Oil Control Valve (OCV) which supplies the engine oil to the cam phaser or cuts the engine oil from the cam phaser in accordance with the ECM PWM (Pulse With Modulation) control signal,

- the CVVT Oil Temperature Sensor (OTS) which measures the engine oil temperature,

- and the Cam Phaser which varies the cam phase by using the hydraulic force of the engine oil.

The engine oil getting out of the CVVT oil control valve varies the cam phase in the direction (Intake Advance/Exhaust Retard) or opposite direction (Intake Retard/Exhaust Advance) of the engine rotation by rotating the rotor connected with the camshaft inside the cam phaser.

Rail Pressure Sensor (RPS) Repair procedures

Inspection 1. Connect the GDS on the Data Link Connector (DLC). 2. Measure the output voltage of the RPS at idle and various engine speed. ConditionOutput Voltage (V)Idle Approx. 1.21, ...

CVVT Oil Temperature Sensor (OTS) Specifications

Specification TemperatureResistance (kΩ)°C°F-40-4052.15-20-416.520326.020682.45401041.11601400.54801760.29 ...

Other information:

Kia Cadenza YG 2016-2025 Service Manual: Components and Components Location

Component Location 1. Front deicer relay2. IGN2 relay3. Rain sensor relay4. Blower relay5. Burglar alarm horn relay6. Wiper relay7. IGN1 relay8. Cooling pan relay #19. Cooling pan relay #210. Start relay11. Rear defogger relay12. Horn relay13. ACC relay14. Fuel pump relay15. ECU relay ...

Kia Cadenza YG 2016-2025 Owners Manual: Good driving practices

Never move the gear shift lever from P (Park) to any other position with the accelerator pedal depressed. Never move the gear shift lever into P (Park) when the vehicle is in motion. Slow down before shifting to a lower gear. Otherwise, the lower gear may not be engaged. ...