KIA Niro: Knock Sensor (KS)
Specification
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.
Circuit Diagram
Harness Connector
Knock Sensor (KS) Repair procedures
Removal
- Switch "OFF" the ignition and disconnect the negative (-) battery terminal.
- Remove the intake manifold.
(Refer to Engine Mechanical System - "Intanke Manifold")
- Remove the installation bolt (A), and then remove the sensor (B) from the cylinder block.
Knock sensor mounting bolt: 18.6 - 23.5 N*m (1.9 - 2.4 kgf*m, 13.7 - 17.4 lb*ft)
Installation
Warning
- Install the component to the specified torque.
- Note that internal damage may occur when the component is dropped. If the component has been dropped, inspect before installing.
- Install in the reverse order of removal.
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Heated Oxygen Sensor (HO2S)
Specification
HO2S (Bank 1/Sensor 1) (Linear)
HO2S (Bank 1/Sensor 2) (Binary type)
Description
Heated Oxygen Sensor (HO2S), consisting of zirconium and alumina, is
installed on both upstream
and downstream of the Manifold Catalytic Con
Rail Pressure Sensor (RPS)
Specification
Rail Pressure Sensor (RPS) Description and operation
Description
Installed on the delivery pipe, the Rail Pressure Sensor (RPS) measures the
instantaneous fuel pressure
in the delivery pipe. The sensing element (Semiconduc
Accelerator Position Sensor (APS)
Specification
Accelerator Position Sensor (APS) Description and operation
Description
Installed on the accelerator pedal module, the Accelerator Position Sensor (APS)
detects the rotation
angle of the accelerator pedal. The APS is one o
SEE MORE:
Limitations of Smart Cruise Control
Smart Cruise Control may not operate
properly, or it may operate unexpectedly
under the following circumstances:
The detecting sensor or the surroundings
are contaminated or damaged
Washer fluid is continuously sprayed,
or the wiper is on
Releasing EPB automatically (Kia Niro EV)
Operation
Start the vehicle.
Fasten the driver's seat belt.
Close the driver's door, hood and tailgate.
When the vehicle is ON, depress the
brake pedal and shift to R or D.
Depress the accelerator pedal while
the gear is
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