Hyundai Ioniq (AE): Engine Control System / Knock Sensor (KS). Description and operation

Description
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.

    Inspection1.Check the signal waveform of the CMPS and CKPS using the GDS. Specification : Refer to "Wave Form"Removal    â€¢ DON’T remove the camshaft position sensor while the engine is running or right after engine is turned off.

    Specification Item Specification Capacitance (pF)850 - 1,150

    Other information:

    Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: Heater Core. Repair procedures

    Replacement1.Disconnect the negative (-) battery terminal. 2.Remove the heater and blower assembly.(Refer to Heater - "Heater Unit") 3.Loosen the mounting screws and remove the driver's temperature control actuator (A).4.Remove the heater core cover (A) after loosening the mounting screws.

    Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: Climate Control Air Filter. Repair procedures

    Replacement1.Disconnect the air damper (A) from the glove box (B).2.Remove the stopper (B) from the glove box (A).3.Remove the filter cover (A) by pressing the knob.4.Replace the air filter (A) with a new one according to the direction of air filter.    â€¢ To remove the filter easily, press the right side inwa

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