Hyundai Ioniq: Engine Control System / Knock Sensor (KS). Description and operation
Knocking is a phenomenon characterized by undesirable vibration and noise and can cause engine damage. Knock Sensor (KS) is installed on the cylinder block and senses engine knocking.
When knocking occurs, the vibration from the cylinder block is applied as pressure to the piezoelectric element. When a knock occurs, the sensor produces voltage signal. The ECM retards the ignition timing when knocking occurs. If the knocking disappears after retarding the ignition timing, the ECM will advance the ignition timing. This sequential control can improve engine power, torque and fuel economy.
![](images/knock_sensor_ks_description_and_operation-687/413/egrf251a_n.gif)
Inspection1.Check the signal waveform of the CMPS and CKPS using the GDS. Specification : Refer to "Wave Form"Removal
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DON’T remove the camshaft position sensor while the engine is running or right after engine is turned off...
Other information:
Replacement1.Pull down the front door window glass to the lowest level by pressing the power window glass switch.2.After loosening the mounting screws, remove the front door belt outside weatherstrip (A). Tightening torque : 1.0 - 2.0 N...
A : Wiper speed control
· MIST – Single wipe
· OFF – Off
· INT – Intermittent wipe
· LO – Low wiper speed
· HI – High wiper speed
B : Intermittent control wipe time adjustment
C :Wash with brief wipes
Windshield Wipers
Operates as follows when the Engine Start/Stop button is in the ON position...
Categories
![Hyundai Ioniq. Hybrid Vehicle Interior Overview](images/books/1/hyundai_ioniq_hybrid_vehicle_interior_overview_3.png)
1. Door lock/unlock button
2. Driver position memory system
3. Side view mirror control switch
4. Central door lock switch
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