Hyundai i-30: Engine Control System / Camshaft Position Sensor (CMPS)

Hyundai i30 (PD) 2018-2024 Service Manual / Engine Control / Fuel System / Engine Control System / Camshaft Position Sensor (CMPS)

Description and operation
Description
Camshaft Position Sensor (CMPS) is a hall sensor and detects the camshaft position by using a hall element.
It is related with Crankshaft Position Sensor (CKPS) and detects the piston position of each cylinder which the CKPS can't detect.
The CMPS is installed on engine head cover and uses a target wheel installed on the camshaft. The Cam Position sensor is a hall-effect type sensor. As the target wheel passes the Hall sensor, the magnetic field changes in the sensor. The sensor then switches a signal which creates a square wave.

Troubleshooting
Wave Form

Schematic diagrams
Circuit Diagram

Harness Connector
CMPS [Bank 1 / Intake, Exhaust]

Repair procedures
Inspection
1.
Check the signal waveform of the CMPS and CKPS using the diagnostic tool.
Specification : Refer to "Wave Form"
Removal
  
DON’T remove the camshaft position sensor while the engine is running or right after engine is turned off. The part and engine oil is hot and can cause burns.
[Bank 1 / Intake]
1.
Turn the ignition switch OFF and disconnect the battery negative (-) terminal.
2.
Disconnect the camshaft position sensor connector (A).
3.
Remove the sensor after loosening the mounting bolt (B).
Tightening Torque :
9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb.ft)

[Bank 1 / Exhaust]
1.
Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2.
Disconnect the camshaft position sensor connector (A).
3.
Remove the sensor after loosening the mounting bolt (B).
Tightening Torque :
9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb.ft)

Installation
  
Install the component with the specified torques.
Note that internal damage may occur when the component is dropped. If the component has been dropped, inspect before installing.
  
Apply the engine oil to the O-ring.
  
Insert the sensor in the installation hole and be careful not to damage.
  
Be careful not to damage the sensor housing and the connector.
Be careful not to damage the O-ring.
1.
Install in the reverse order of removal.

    Crankshaft Position Sensor (CKPS)

    Description and operation Description Crankshaft Position Sensor (CKPS) detects the crankshaft position and is one of the most important sensors of the engine control system...

    Knock Sensor (KS)

    Description and operation Description Knocking is a phenomenon characterized by undesirable vibration and noise and can cause engine damage...

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