Hyundai Accent: Knock Sensor (KS). Description and Operation

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. 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.

Installation

• Install the component with the specified torques. • ...

Knock Sensor (KS). Specifications

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

See also:

Engine compartment
1. Engine coolant reservoir 2. Windshield washer fluid reservoir 3. Radiator cap 4. Engine oil filler cap 5. Engine oil dipstick 6. Brake/clutch fluid reservoir 7. Air cleaner 8. Fuse box 9. ...

Variant coding
After replacing the SRSCM with a new one, must be performed the “Variant Coding” procedure. 1. On ...

Repair procedures
Compession Pressure Inspection If the there is lack of power, excessive oil consumption or poor fuel economy, measure the comp ...