Inspection Procedure 5: Mixed with Noise, Only at Night.
1.
| note | Beat sound*: Two signals close in frequency interfere with each other, creating a repetitious high-pitched sound. This sound is generated not only by sound signals but electrical waves as well. |
DIAGNOSIS PROCEDURE
STEP 1. Check that the noise still obvious even when the lamps are off.
Q.
Is the noise still obvious even when the lamps are off?
Step 2. Check hat the following actions.
Q.
Is there more noise than on radio in other vehicles?
Step 3. Check that the noise fades away when the vehicle harness is moved away from the radio (if the harness is not in the proper position).
Q.
Does the noise fade away when the vehicle harness is moved any from the radio (If the harness is not in the proper position)?