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

Hyundai Ioniq (AE) 2017-2024 Service Manual / Engine Control/Fuel System / 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.

Camshaft Position Sensor (CMPS). Repair procedures

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

Knock Sensor (KS). Specifications

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Other information:

Hyundai Ioniq (AE) 2017-2024 Service Manual: Repair procedures

Inspection1.Connect the GDS on the Data Link Connector (DLC).2.Measure the output voltage of the RPS at idle and various engine speed. Condition Output Voltage (V) Idle Approx. 1.21,500 rpm2...

Hyundai Ioniq (AE) 2017-2024 Service Manual: Electric Water Pump(EWP). Repair procedures

Removal1.Remove the 12 V battery (-) cable.2.Remove the undercover.(Refer to Engine Mechanical System - "Engine Room Undercover".)3.Drain the coolant from the hybrid cooling system.(Refer to Hybrid Motor Cooling System - "Coolant".)4.Disconnect the hose (A) from the reservoir tank...