Hyundai Sonata: 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” ...Knock Sensor (KS). Specifications
Specification Item Specification Capacitance (pF) 850 ~ 1,150 ...See also:
Transmitter. Repair procedures
Inspection
1.
Check that the red light flickers when the door lock or unlock
button is pressed on the transmitter.
2.
Remove the battery ( ...
Special Service Tools
Special Service Tools
Tools
(Number and name)
Illustration
Use
09200-38001
Engine support fixture
Removal and in ...
Driving off-road
Drive carefully off-road because your vehicle may be damaged by rocks or roots
of trees. Become familiar with the off-road conditions where you are going to drive
before you begin driving. ...