Kia Cadenza YG: Engine Control System / Knock Sensor (KS) Description and Operation

Kia Cadenza YG 2016-2021 Service Manual / Engine Control / Fuel System / 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. The two Knock Sensor (KS) are installed inside the V-valley of 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 position sensor while the engine is running or right after engine is turned off.

    Specification ItemSpecificationCapacitance (pF)950 ~ 1,350Resistance (MΩ)4.87

    Other information:

    Kia Cadenza YG 2016-2021 Service Manual: Repair procedures

    Inspection Tolerance Calibration Tolerance calibration compensates for the error margins of surround view video that occur due to the installation tolerance when the four cameras that comprise the SVM system are installed. You must carry out tolerance calibration if you do any of the following.

    Kia Cadenza YG 2016-2021 Service Manual: Surround View Monitoring Switch Repair procedures

    Removal 1. Disconnect the negative (-) battery terminal. 2. Remove the floor console upper cover. (Refer to Body - "Floor Console Assembly") 3. Disconnect the console upper cover connector (A). 4. Remove the cup holder assembly (A) after loosening the mounting screws.

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