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

Kia Cadenza YG 2016-2024 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.

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 ca ...

Knock Sensor (KS) Specifications

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

Other information:

Kia Cadenza YG 2016-2024 Service Manual: Manifold Absolute Pressure Sensor (MAPS) Repair procedures

Inspection 1. Connect the GDS on the Data Link Connector (DLC). 2. Measure the output voltage of the MAPS at idle and IG ON. ConditionOutput Voltage (V)IG ONApprox. 4.44VIdleApprox. 0.75V Removal 1. Turn the ignition switch OFF and disconnect the battery negative (-) cable. 2 ...

Kia Cadenza YG 2016-2024 Owners Manual: Pre-tensioner seat belt

Your vehicle is equipped with driver's and front passenger's pre-tensioner seat belts (retractor pretensioner and EFD (Emergency Fastening Device)). The pre-tensioner seat belts may be activated, when a frontal collision is severe enough, together with the air bags. When the vehicle ...