Kia Niro: Engine Control System / Knock Sensor (KS) Description and operation

Description

Knocking is a phenomenon characterized by undesirable vibration and noise that 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, and the sensor produces voltage signal to ECM. On receipt of this signal, ECM will control the ignition timing by retarding the ignition timing and then advancing the ignition timing when the knocking disappears. This sequential control can improve engine power, torque and fuel economy.

Knock Sensor (KS) Specifications
Specification Item Specification Capacitance (pF) 850 - 1,150 ...

Knock Sensor (KS) Schematic diagrams
Circuit Diagram Harness Connector ...

Other information:

Kia Niro 2017 (DE HEV) Service Manual: Ignition Coil Electrical and electronic specifications
Specification Item Specification Engine Time (RPM) 1000 2000 3000 4000 5000 6000 7000 Dwell Time (ms) 5.18 4.19 ...

Kia Niro 2017 (DE HEV) Service Manual: Troubleshooting
Troubleshooting Symptom Suspected Area Remedy Water leaks from panorama sunroof Deteriorated roof lid weatherstrip Replace Excessive roof lid-to-body clearance and improperly fitted weathers ...

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