Hyundai Tucson: 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
ItemSpecificationCapacitance (pF)850 ~ 1,150
...
Other information:
Hyundai Tucson (LM) 2010-2015 Owners Manual: Instrument Cluster Control
Adjusting Instrument Cluster Illumination
When the vehicle's parking lights or headlights are on, press the illumination
control button to adjust the brightness of the instrument panel illumination.
The brightness of the instrument panel illumination is displayed.
If the brightness ...
Hyundai Tucson (LM) 2010-2015 Service Manual: Speakers Repair procedures
Inspection
1.
Troubleshooting for Speaker
(1)
Basic inspection of speaker
Inspect the sound from speaker after verifying that the
speaker mounting screws are removed and the wiring connector is
connected to remove any possible vibration transmitted from body trims
and surrounding parts. ...