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:
Vanity mirror lamp
Pull the sunvisor downward and you can turn the vanity mirror lamp ON or OFF
by pushing the button.
• : To turn the lamp ON.
: To turn the lamp OFF.
CAUTION
To prevent unnecessary cha ...
Crankshaft Position Sensor (CKPS). Troubleshooting
Wave Form
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Components and Components Location
Components
1. Sub frame2. Coil spring3. Rear upper arm4. Assist arm5. Trailing arm6. Rear carrier assembly7. Rear shock absorber8. Rear lower arm
...