Hyundai Ioniq: Engine Control System / Camshaft Position Sensor (CMPS). Description and operation

Hyundai Ioniq (AE) 2017-2025 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.

Repair procedures

Inspection1.Check signal waveform of CKPS and CMPS using a GDS. Specification : Refer to "Waveform"Removal1.Turn ignition switch OFF and disconnect the negative (-) battery cable...

Camshaft Position Sensor (CMPS). Troubleshooting

Signal WaveformThis example shows a typical Crankshaft Position Sensor (CKPS) and Camshaft Position Sensor (CMPS) waveform at idle. The PCM controls the injection and ignition timing by using these signals...

Other information:

Hyundai Ioniq (AE) 2017-2025 Owner's Manual: Immobilizer Indicator Light

This indicator light illuminates for up to 30 seconds: • When the vehicle detects the smart key in the vehicle with the Engine Start/Stop button in the ACC or ON position. - At this time, you can start the engine. - The indicator light goes off after starting the engine...

Hyundai Ioniq (AE) 2017-2025 Owner's Manual: Turn Signal, High Beam, Light ON Indicator Lights

Turn Signal Indicator Light This indicator light blinks: • When you operate the turn signal indicator light. If any of the following occurs, there may be a malfunction with the turn signal system. - The turn signal indicator light illuminates but does not blink - The turn signal indicator light blinks rapidly - The turn signal indicator light does not illuminate at all If either of these conditions occur, have your vehicle inspected by an authorized HYUNDAI dealer...