Hyundai Elantra: Engine Control System / Knock Sensor (KS) Description and Operation

Hyundai Elantra AD (2016-2020) 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

Inspection 1. Check the signal waveform of the CMPS and CKPS using the GDS. Specification : Refer to "Wave Form" Removal • DON’T remove the camshaft positi ...

Knock Sensor (KS) Specifications

Specification ItemSpecificationCapacitance (pF)850 ~ 1,150 ...

Other information:

Hyundai Elantra AD (2016-2020) Owners Manual: Smart Trunk
On a vehicle equipped with a smart key, the trunk can be opened using the Smart Trunk system. How to use the Smart Trunk The trunk can be opened with notouch activation satisfying all the conditions below. After 15 seconds when all doors are closed and locked Positioned in the detectin ...

Hyundai Elantra AD (2016-2020) Service Manual: Description and Operation
Description The starting system includes the battery, starter, solenoid switch, ignition switch, inhibitor switch (A/T), clutch pedal switch (M/T), ignition lock switch, connection wires and the battery cable. When the ignition key is turned to the start position, current flows and energizes ...