Kia Rio YB Quiz
Engine Control System/Fuel System

Crankshaft Position Sensor (CKPS)

In this manual: Engine Control System/Fuel System
General Information — 8Maintenance — 31Engine Mechanical System — 44Engine Electrical System — 14Emission Control System — 9Engine Control System/Fuel System — 30Clutch System — 10Manual Transmission — 10Automatic Transmission — 23Drive Shaft and Axle — 8Suspension System — 15Steering — 9Restraints — 14Brake System — 22Body (Interior and Exterior) — 115Body Electrical System — 84Heating, Ventilation, and Air Conditioning — 28
4steps
~24min
2/5difficulty
0102030405011.89N·mlb·ft
Tightening torque found on this page
Done 0 of 4

Specifications

Specification

Crankshaft Position Sensor (CKPS)

Non-ISG type

Item Specification
Type Magnetic Field Type
Coil Resistance (Ω) 819 ~ 1001 [20 °C]
Pin 2

ISG type

Item Specification
Type Hall Effect Type
Air Gap (mm) 0,9 ~ 1,1
Pin 3

Description and Operation

Description

The Crankshaft Position Sensor (CKPS) detects the crankshaft position and is one of the most important sensors in the engine control system. If there is no CKP signal, the engine may stop due to the absence of the CKPS signal.

This sensor is installed on the ladder frame and generates an AC voltage by the magnetic flux field created as the sensor and the target wheel rotate while the engine is running. The target wheel has 58 slots and 2 missing slots at every 360 CA (Crank Angle). In the case of ISG, the ISG function receives reliable crankshaft position information in all operating modes. The CKPS function in ISG provides a short restart time for the engine and efficient combustion.

[ISG]

[NON-ISG]

Operation

[ISG]

Two separate differential channels for speed and direction information, respectively.

The phase separation of the two channels provides information on the direction of rotation.

Circuit Diagrams

Wiring Diagram

with ISG

without ISG

Repair Procedures

Inspection

  1. Check the CKPS and CMPS signal waveforms using the diagnostic tool.

    Specification: Refer to "Waveform"

Removal

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

  2. Raise the vehicle.

  3. Disconnect the crankshaft position sensor connector (A).

  4. Remove the CKP sensor by loosening the mounting bolt (A).

    Crankshaft Position Sensor Mounting Bolt:

    9,8–11.8 N·m

Installation

  1. Installation is the reverse of removal.

Troubleshooting

Waveform

This example shows a typical crankshaft position sensor (CKPS) and camshaft position. Sensor waveform (CMPS) at idle. The PCM controls injection and ignition timing using these signals.

Generally, the CKPS signal is used to detect piston position, and the CMPS signal is used to detect the top dead center of each cylinder.

Test yourself

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