Inspection Procedure 20

INSPECTION PROCEDURE 20: 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, CD player and CD changer.
The speaker should now be free of distortion.