Kia Optima: Knock Sensor (KS) 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. 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
•
Do not remove the ca ...
Knock Sensor (KS) Specifications
Specification
ItemSpecificationCapacitance (pF)850 ~ 1,150
...
See also:
Driver Airbag (DAB) Module and Clock Spring Repair procedures
Removal
1.
Set the front tires straight-ahead before removing the steering wheel.
If the steering wheel and the front tires are not set
straight ahead together, it ...
Changing Coolant
Change coolant according to the Scheduled Maintenance.
Use only soft (de-mineralized) water in the coolant mixture.
The engine in your vehicle has aluminum engine parts and must be protected
...
Sunvisors
To use a sunvisor, pull it downward.
To use a sunvisor for a side window (if equipped), pull it downward, unsnap it
from the bracket and swing it to the side.
There is a pocket on the drivers v ...
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