Kia Rio: Engine Control System / Knock Sensor (KS)
Specifications
| Specification |
Knock Sensor (KS)
|
Item |
Specification |
|
Resistance(MΩ) |
4.87 |
|
Capacitance (pF) |
950 ~ 1,350 |
|
Type |
Piezo-electricity |
|
Pin |
2 |
Description and operation
| Description |
Knocking is a phenomenon characterized by undesirable vibration and noise and 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. At this time, this sensor transfers the voltage signal higher than the specified value to the ECM and the ECM retards the ignition timing. 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.
Schematic diagrams
| Circuit Diagram |
Repair procedures
| Removal |
| 1. |
Turn ignition switch OFF and disconnect the battery negative (-) terminal. |
| 2. |
Remove the intake manifold. (Refer to Engine Mechanical System - "Intake Manifold") |
| 3. |
Remove the installation bolt (A), and then remove the sensor from the cylinder block.
|
| Installation |
|
| 1. |
Installation is reverse of removal. |
Camshaft Position Sensor (CMPS)
Specifications
Specification
Camshaft Position Sensor
(CMPS)
Item
Specification
Type
Hall effect type
Output ...
Heated Oxygen Sensor (HO2S)
Specifications
Specification
Heated Oxygen Sensor
(HO2S)
HO2S [Bank 1/Sensor 1]
Item
Specification
Heater Resistance (Ω)
App ...
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