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

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 ...
Specification
ItemSpecificationResistance(M?)4.87
...
Other information:
Hyundai Sonata LF 2014-2019 Service Manual: Oil Pump Repair procedures
Removal and Installation
1.
Remove the timing chain cover.
(Refer to Timing System - "Timing Chain Cover")
2.
Remove the pump cover (A).
Tightening torque :
8.8 ~ 13.7N.m (0.9 ~ 1.4kgf.m, 6.5 ~ 10.1 lb-ft)
3.
Remove the inner rotor (B) and outer rotor (C).
4.
Install in the re ...
Hyundai Sonata LF 2014-2019 Service Manual: Description and Operation
Description of ESP
Optimum driving safety now has a name : ESP, the Electronic Stability Program.
ESP recognizes critical driving conditions, such as panic
reactions in dangerous situations, and stabilizes the vehicle by
wheel-individual braking and engine control intervention with no need ...