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) Service Manual: Rear Back Armrest Repair procedures
Replacement • When removing with a flat-tip screwdriver or remover, wrap protective tape around the tools to prevent damage to components. • Use a plastic panel removal tool to remove interior trim pieces without marring the surface. • Take care not to ...

Hyundai Elantra AD (2016-2020) Service Manual: Starter Specifications
Specification ItemSpecificationRated voltage12 V, 1.2 kWThe number of pinion teeth13Performance[No-load, 11.5 V]AmpereMax. 105 ASpeedMin. 2,950 rpm ...