Kia Forte: Engine Control System / Camshaft Position Sensor (CMPS)

Kia Forte 2019-2021 (BD) 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.

Schematic diagrams
Circuit Diagram

Harness Connector

Repair procedures
Inspection
1.

Check the signal waveform of the CMPS and CKPS using the KDS.

Specification: Refer to “DTC guide”

Removal & Installation
  

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 by loosening the mounting bolt (B).

Camshaft position sensor mounting bolt:

7.8 - 11.8 N·m (0.8 - 1.2 kgf·m, 5.8 - 8.7 lb·ft)

4.

Install in the reverse order of removal.

  

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.

[Bank 1 / Exhaust]
1.

Turn the ignition switch OFF and disconnect the battery negative (-) terminal.

2.

Disconnect the camshaft position sensor connector (A).

3.

Remove the sensor by loosening the mounting bolt (B).

Camshaft position sensor mounting bolt:

7.8 - 11.8 N·m (0.8 - 1.2 kgf·m, 5.8 - 8.7 lb·ft)

4.

Install in the reverse order of removal.

  

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.

Crankshaft Position Sensor (CKPS)
Specifications Specification Item Specification Coil Resistance (Ω) 774 - 946 [20°C (68°F)] Description and operat ...

Knock Sensor (KS)
Specifications Specification Item Specification Resistance(MΩ) 4.87 Description and operation Description ...

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