Kia Forte: Engine Control System / Crankshaft Position Sensor (CKPS)

Kia Forte 2019-2021 (BD) Service Manual / Engine Control / Fuel System / Engine Control System / Crankshaft Position Sensor (CKPS)

Specifications
Specification

Item
Specification
Coil Resistance (Ω)
774 - 946 [20°C (68°F)]

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. If there is no CKPS signal input, the engine may stop because of CKPS signal missing.

This sensor is installed in ladder frame and generates alternating current by magnetic flux field which is made by the sensor and the target wheel when the engine rotates. The target wheel consists of 58 slots and 2 missing slots on 360 CA (Crank Angle).

Schematic diagrams
Circuit Diagram

Harness Connector

Repair procedures
Inspection
1.

Check signal waveform of CKPS and CMPS using a KDS.

Specification: Refer to "DTC guide"

Removal & Installation
1.

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

2.

Disconnect the crankshaft position sensor connector (A).

3.

Remove the engine room under cover.

(Refer to Engine Mechanical System - "Engine Room Under Cover")

4.

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

Crankshaft position sensor mounting bolt:

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

5.

Install in the reverse order of removal.

  

Tighten the component with the specified torques.

If the component has been dropped, inspect if it is damaged before installation.

Apply the engine oil to the O-ring.

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

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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 Positi ...

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