Hyundai Palisade Quiz
Engine Control System/Fuel System

CVVT Oil Temperature Sensor (OTS)

In this manual: Engine Control System/Fuel System
General Information — 10Engine Mechanical System — 56Engine Electrical System — 28Emission Control System — 21Engine Control System/Fuel System — 42Automatic Transmission System (A8LF1) — 33All-Wheel Drive (AWD) System — 16Drive Shaft and Axle — 19Suspension System — 28Steering — 17Restraints — 20Brake System — 39Body (Interior and Exterior) — 142Body Electrical System — 171Heating, Ventilation, and Air Conditioning — 47Advanced Driver Assistance System (ADAS) — 44
5steps
~30min
2/5difficulty
Done 0 of 5

Description and Operation

Description

The Continuously Variable Valve Timing (CVVT) system advances or retards the intake and exhaust valve timing according to the ECM control signal, which is calculated from engine speed and load. By controlling CVVT, valve overlap or underlap is produced, which improves fuel economy, reduces exhaust emissions (NOx, HC), and improves engine performance by reducing pumping losses, creating an internal exhaust gas recirculation effect, improving combustion stability and volumetric efficiency, and increasing expansion work. This system consists of the CVVT Oil Control Valve (OCV), which supplies engine oil to the cam phaser or shuts off engine oil from the cam phaser according to the ECM Pulse Width Modulation (PWM) control signal; the CVVT Oil Temperature Sensor (OTS), which measures engine oil temperature; and the Cam Phaser, which changes the camshaft phase using hydraulic oil pressure. Engine oil supplied through the CVVT oil control valve changes the camshaft phase in the direction of rotation (intake advance/exhaust retard) or in the opposite direction (intake retard/exhaust advance) by rotating the rotor connected to the camshaft inside the cam phaser.
Hyundai Palisade. Description and operation

Specifications

Specification

Temperature Resistance (kOhm)
°C °F
-40 -40 41,74 - 54,54
-20 -4 14.13 - 16.83
0 32 5,28 - 6,3
25 77 1,88 - 2,14
80 176 0,31 - 0,33
140 284 0,07 - 0,08

Circuit Diagrams

Wiring Diagram

Hyundai Palisade. Schematic diagrams
Harness Connector
Hyundai Palisade. Schematic diagrams

Repair Procedures

Inspection

  1. Turn the ignition off.
  2. Disconnect the OTS connector.
  3. Remove the OTS.
  4. After immersing the sensor thermistor in engine coolant, measure the resistance between OTS terminals 1 and 2.
  5. Make sure the resistance is within specification.
    Temperature Resistance (kOhm)
    °C °F
    -40 -40 41,74 - 54,54
    -20 -4 14.13 - 16.83
    0 32 5,28 - 6,3
    25 77 1,88 - 2,14
    80 176 0,31 - 0,33
    140 284 0,07 - 0,08

Removal

  1. Refer to Engine Mechanical System - "Oil Pressure Sensor".

Installation

  1. Refer to Engine Mechanical System - "Oil Pressure Sensor".

Test yourself

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