Hyundai Tucson: Engine Control System / 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” Removal     • DON’T remove the camshaft pos ...

Knock Sensor (KS) Specifications
Specification ItemSpecificationCapacitance (pF)850 ~ 1,150 ...

Other information:

Hyundai Tucson (LM) 2010-2015 Owners Manual: In case of an emergency while driving
If the engine stalls while driving Reduce your speed gradually, keeping a straight line. Move cautiously off the road to a safe place. Turn on your hazard warning flasher. Try to start the engine again. If your vehicle will not start, contact an authorized HYUNDAI dealer or seek other ...

Hyundai Tucson (LM) 2010-2015 Service Manual: SS-B Solenoid Valve(ON/OFF) Repair procedures
Inspection 1. Turn ignition switch OFF. 2. Disconnect the solenoid valve connector. 3. Measure resistance between sensor signal terminal and sensor ground terminal. 4. Check that the resistance is within the specification. Removal 1. Remove the air cleaner assembly and air d ...

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