Kia Stinger CK: Engine Control System / CVVT Oil Temperature Sensor (OTS)

Kia Stinger (CK) 2018-2023 Service Manual / Engine Control / Fuel System / Engine Control System / CVVT Oil Temperature Sensor (OTS)

Specifications

Specification

Temperature [°C (°F)]	Resistance (kΩ)
-40	52.15
-20	28.82
0	14.08 - 19.45
20	2.16 - 2.78
40	1.11
60	0.54
80	0.26 - 0.32
100	0.16
120	0.1
140	0.06

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 calculated by the engine speed and load.

By controlling CVVT, the valve over-lap or under-lap occurs, which in turn improves fuel efficiency, reduces exhaust gases (NOx, HC) and improves engine performance by reducing pumping loss, generating internal EGR effect, improving combustion stability, improving volumetric efficiency and increasing expansion work.

This system consists of the CVVT Oil Control Valve (OCV) which supplies the engine oil to the cam phaser or runs out 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 released from 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.

Schematic diagrams

Circuit Diagram

Harness Connector

Repair procedures

Inspection

1.	Switch "OFF" the ignition.

2.	Disconnect the OTS connector.

3.	Remove the OTS.

4.	After immersing the thermistor of the sensor into engine coolant, measure resistance between the OTS terminals 1 and 2.

Check that the resistance is within the specification.

Temperature [°C(°F)]	Resistance (kΩ)
-40(-40)	52.15
-20(-4)	16.25
0(32)	6.0
20(68)	2.45
40(104)	1.11
60(140)	0.54
80(176)	0.29

Removal

1.	Switch "OFF" the ignition and disconnect the negative (-) battery terminal.

2.	Disconnect the oil temperature sensor connector (A).

3.	Remove the oil temperature sensor (B).

Installation

Install in the reverse order of removal.

Oil temperature sensor :

34.3 - 44.1 N·m (3.5 - 4.5 kgf·m, 25.3 - 32.5 lb·ft)

Rail Pressure Sensor (RPS)

Accelerator Position Sensor (APS)

Other information:

Kia Stinger (CK) 2018-2023 Service Manual: Timing Chain Cover

Repair procedures Removal In case of removing the high pressure fuel pump, high pressure fuel pipe, delivery pipe, and injector, there may be injury caused by leakage of the high pressure fuel. So don’t do any repair work right after engine stops. • Use fender covers to avoid damaging painted surfaces.

Kia Stinger (CK) 2018-2023 Service Manual: DC DC converter

Components and components location Components Location Description and operation Description Due to the considerably more frequent occurrence of starting operations, the electrical load that occurs often leads to voltage dips in the vehicle network.In order to stabilize the power supply for certain voltage-sensitive electrical components, a DC/DC converter is used in conjunction with the ISG function.