INSPECTION PROCEDURE 20: Radio: Distortion on AM and/or FM: Diagnosis
- STEP 1. Check the level of distortion.
Q: How much distortion is there?
Occasional distortion : Go to Step 2.
Constant distortion : Go to Step 3.
- STEP 2. Check the location of the distortion.
Q: Is there distortion when the vehicle is near the radio station?
YES: The antenna is receiving too strong a signal.
NO: Go to Step 3.
- STEP 3. Check the wires at each speaker.
Q: Are the speaker wires contacting the paper speaker cone?
YES: Move the speaker wires away from the paper speaker cone. The speaker should now be free of distortion.
NO: Go to Step 4.
- STEP 4. Remove the speakers, and check the paper cone for foreign material or damage.
Q: Is there foreign material or damage on the paper cone of the speaker?
YES: Repair or replace the speakers. The speaker should now be free of distortion.
NO: Go to Step 5.
- STEP 5. Check for distortion with the speaker installed.
Q: Does a distortion occur?
YES: Install the speaker securely. The speaker should now be free of distortion.
NO: Repair or replace the radio and CD player or radio and CD player with CD changer. The speaker should now be free of distortion.