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

    Diagnosis With GDS 1. BSD system defects can be quickly diagnosed with the GDS. GDS operates actuator quickly to monitor, input/output value and self diagnosis. 2. Connect the cable of GDS to the data link connector in driver side crash pad lower panel, turn the power on GDS.

    Kia Cadenza YG 2016-2021 Service Manual: Climate Control Air Filtar Repair procedures

    Replacement 1. Disconnect the damper (B) from the glove box (A) and then remove the glove box lift (C). 2. Remove the filter cover (A) with pushing the knob. 3. Replace the air filter (B), install it after making sure of the direction of air filter.

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