KIA Niro: Camshaft Position Sensor (CMPS)

Description

Camshaft Position Sensor (CMPS) is a hall sensor, which 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 cannot be detected by the CKPS.

The CMPS is installed on engine head cover and uses a target wheel installed on the camshaft. The
Camshaft 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.

Circuit Diagram

Harness Connector

CMPS (Bank 1 / Intake)

CMPS (Bank 1 / Exhaust)

Camshaft Position Sensor (CMPS) Repair procedures

Inspection

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

Specification: Refer to "Wave Form"

Removal

Warning

Do NOT remove the camshaft position sensor with engine running or right after engine stops due to the possibility of scalding from hot engine oil flowing out.

Bank 1 / Intake

1. Switch "OFF" the ignition and disconnect the negative (-) battery terminal.
2. Remove the air cleaner.

   (Refer to Engine Mechanical System - "Air Cleaner")

3. Disconnect the camshaft position sensor connector (A).
4. Remove the camshaft position sensor after loonsening the mounting bolt (B).

Camshaft position sensor mounting bolt: 7.8 - 11.8 N*m (0.8 - 1.2 kgf*m, 5.7 - 8.7 lb*ft)

Bank 1 / Exhaust

1. Switch "OFF" the ignition and disconnect the negative (-) battery terminal.
2. Disconnect the camshaft position sensor connector (A).
3. Remove the camshaft position sensor after loonsening the mounting bolt (B).

Camshaft position sensor mounting bolt: 7.8 - 11.8 N*m (0.8 - 1.2 kgf*m, 5.7 - 8.7 lb*ft)

Installation

Warning

• Install the component to the specified torque.
• Note that internal damage may occur when the component is dropped. If the component has been dropped, inspect before installing.
• Apply engine oil to the O-ring.
• Insert the sensor in the installation hole and be careful not to damage it.
• 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.

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