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

Kia Rio 2017-2021 YB Service Manual / Engine Control / Fuel System / Engine Control System / Camshaft Position Sensor (CMPS)

Specifications
Specification

Camshaft Position Sensor (CMPS)

Item
Specification
Type
Hall effect type
Output Pulse (V)
0 ~ 5
Air Gap [mm (in.)]
0.2 ~ 2.0 (0.0079 ~ 0.079)
Pin
3

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. This sensor has a hall-effect IC which output voltage changes when magnetic field is made on the IC with current flow.

Schematic diagrams
Circuit Diagram

Repair procedures
Inspection
1.

Check signal waveform of CKPS and CMPS using a scan tool.

Specification : Refer to “Waveform”

Removal
  

DON’T remove the camshaft position sensor during engine running or right after engine stops, or a scald by the flowed out engine oil may occur.

1.

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

2.

Remove the cleaner.

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

3.

Disconnect the camshaft position sensor connector (A).

4.

Remove the installation bolt (B), and then remove the sensor.

Camshaft position sensor installation bolt:

9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

[Bank 1/Intake]

5.

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

6.

Disconnect the camshaft position sensor connector (A).

7.

Remove the installation bolt (B), and then remove the sensor.

Camshaft position sensor installation bolt:

9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

[Bank 1/Exhaust]

Installation
  

Install the component with the specified torques.

Note that internal damage may occur when the component is dropped. In this case, use it after inspecting.

Apply the engine oil to the O-ring.

Insert the sensor in the installation hole and be careful not to damage when installation.

Be careful not to damage the sensor housing and the connector.

Be careful not to damage the O-ring.

1.

Installation is reverse of removal.

Troubleshooting
Waveform

Crankshaft Position Sensor (CKPS)
Specifications Specification Crankshaft Position Sensor (CKPS) NON- ISG Type Item Specification Type Magnetic field sensitive ...

Knock Sensor (KS)
Specifications Specification Knock Sensor (KS) Item Specification Resistance(MΩ) 4.87 Capacitance (pF) ...

Other information:

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