Operation CHARM: Car repair manuals for everyone.

Problem Symptoms Table

Problem Symptoms Table:





Problem Symptoms Table:





Noise Examination Chart:





HINT:
- Frequency of FM radio wave is so high that the waves may be affected by various condition on the ground such as buildings, which causes multipath noise or fading noise.
- Multipath noise occurs if some radio waves are largely reflected by obstacles such as buildings or mountains and interfere with other direct waves when received.
- Fading noise occurs if some radio waves are reflected against the ionosphere and interfere with the other direct waves when received.

Causes of Noise Mix (when the engine is started)






HINT:
- Make sure first that there is no noise from the outside. Failing to do so does not identify the sources of the noise but leads to misunderstanding. Be sure to conduct this process.
- Remove noises in weakening order, starting from the strongest one.
- The chart shows the sources of noise from power supplies.