Inspection Procedure 10

Inspection Procedure 10: Broadcasts can be heard but both AM and FM have a lot of noise.

DIAGNOSTIC PROCEDURE

STEP 1. Check the state of the antenna.

Check that there is no damage or crack in the roof antenna.

Q. Is the check result normal?

YES Go to Step 2.

NO Repair or replace the roof antenna.

STEP 2. Check that the noise occur when the engine is stopped or the engine is running.

Q. Does noise occur when the engine is stopped or the engine is running?

When the engine is stopped : Go to Step 3.

When the engine is running : Check the vehicle's noise suppressor (Refer to Inspection Procedure 13 Inspection Procedure 13).

STEP 3. Check that the noise fades away by the following actions.

(1)Tune to a station with a stronger wave.

(2)Adjust the sound quality to suppress high tones.

Q. Is the noise eliminated?

YES This diagnosis is complete.

NO Go to Step 4.

STEP 4. Check that the radio and CD player is correctly grounded

The radio is connected to the ground with an assembling screw.

Q. Is the radio correctly grounded?

YES Go to Step 5.

NO Assemble the radio and CD player into the vehicle.

STEP 5. Check the antenna plug is connected to the radio and CD player.

Q. Is the antenna plug thoroughly connected to the radio and CD player?

YES Go to Step 7.

NO Go to Step 6.

STEP 6. Check that the noise is eliminated when the antenna plug is properly attached.

Q. Is the noise eliminated?

YES This diagnosis is complete.

NO Go to Step 7.

STEP 7. Check that the antenna is in good condition and is it properly mounted.

Q. Is the antenna in good condition and is it properly mounted?

YES Consult the radio manufacturer's service center.

NO Repair or replace the roof antenna.