Hyundai Sonata: 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 pos ...

Knock Sensor (KS) Specifications
Specification ItemSpecificationResistance(M?)4.87 ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Seat Heater Switch Schematic Diagrams
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Hyundai Sonata LF 2014-2019 Owners Manual: Headlamp, Position Lamp, Turn Signal Lamp and Side Marker Light Bulb Replacement
(1) Headlamp (Low) (2) Headlamp (High) (3) Turn signal lamp (4) Front side marker (5) Daytime running lamp/ Parking lamp Headlamp (Halogen bulb) WARNING Handle halogen bulbs with care. Halogen bulbs contain pressurized gas that will produce flying pieces of glass that could cause injuries if b ...

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