Inspection Procedure 20

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.