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”
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Knock Sensor (KS). Specifications
Specification
Item
Specification
Capacitance (pF)
850 ~ 1,150
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See also:
Parking brake
Applying the parking brake
Foot type
To engage the parking brake, first apply the foot brake and then depress the
parking brake pedal down as far as possible.
Hand type
To engage the par ...
Side Body. Body Repair
Side Body A
Side Body B
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Heating and air conditioning
1. Start the engine.
2. Set the mode to the desired position. To improve the effectiveness of heating
and cooling :
- Heating:
- Cooling: 3. Set the temperature control to the desired position.
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