Knocking is a phenomenon characterized by undesirable
vibration and noise and can cause engine damage. The two Knock Sensor
(KS) are installed inside the V-valley of 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.
Removal
1.
Turm ignition switch OFF and disconnect the negative (-) battery cable.
2.
Remove the air duct (B) and air cleaner assembly (A).
3.
Disconnect the brake fluid level switch connector (A), and remove the reservoir cap.
4.
Remove the brake fluid from the master cylinder reser ...
Reset the sunroof when:
- The battery is discharged or disconnected
or the sunroof fuse
has been replaced or disconnected.
- The sunroof control switch is not
operating correctly.
Reset the sunroof as described
below:
1. Start the engine.
2. Close the sunshade and sunroo ...