PROCEDURE
|
1. | CHECK NOISE CONDITION |
(a) Check from which direction the noise comes (front left or right, or rear left or right).
OK:
The location of the noise source can be determined.
| NG | | GO TO STEP 3 |
|
| 2. |
CHECK SPEAKERS |
(a) Check the installation condition of the speaker units that are located near the noise source and that there are no cracks, scratches, deformation or other failures.
|
Result | Proceed to |
|---|---|
|
No malfunction is found. |
A |
| A speaker is installed incorrectly. |
B |
| Foreign matter is in a speaker. |
C |
| A speaker cone paper is broken. |
D |
| B |
| REINSTALL SPEAKER |
| C |
| REMOVE FOREIGN MATTER |
| D |
| REPLACE SPEAKER |
|
| 3. |
CHECK NOISE CONDITIONS |
(a) Check the noise condition.
HINT:
The radio has a noise prevention function to reduce noise when listening to the radio. If a loud noise occurs, check whether the ground at the antenna mounting base and the noise prevention unit are installed and wired correctly.
|
Condition under which Noise Occurs |
Noise Source |
|---|---|
| Noise increases when the accelerator pedal is depressed, but stops when the engine is stopped. |
Generator |
| Noise occurs during A/C or heater operation. |
Blower motor |
|
Noise occurs when the horn switch is pressed and released or when pressed and held. |
Horn |
| Noise occurs synchronously with the turn signal blinking pattern. |
Flasher |
| Noise occurs during window washer operation. |
Washer |
| Noise occurs during wiper operation. |
Wiper |
| Noise occurs when the brake pedal is depressed. |
Stop light switch |
|
Others | Static electricity |
HINT:
|
Result | Proceed to |
|---|---|
|
The noise source cannot be determined. |
A |
| The noise source can be determined. |
B |
| A |
| PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
|
| B |
| REPAIR OR REPLACE NOISE SOURCE |
No Sound can be Heard from Speakers
Radio Broadcast cannot be Received or Poor Reception
Illumination for Panel Switch does not Come on with Tail Switch ON
Installation
Initialization