Radio/Stereo: Description and Operation
AUDIO SYSTEMSeveral combinations of radio receivers and speaker systems are offered as optional equipment. The audio system uses an ignition switched source of battery current so that the system will only operate when the ignition switch is in the ON or Accessory positions.
The audio system includes the following components:
- Antenna
- Power amplifier (with premium speaker system only)
- Radio noise suppression components
- Radio receiver
- Speakers
The vehicle has two speaker systems:
Standard Speaker System
- Two instrument panel speakers
- Two door speakers
- Two rear shelf panel speakers
Infinity Amplified Speaker System
- Amplifier mounted under the front passenger seat
- Two instrument panel speakers
- Two door speakers
- Two rear shelf panel speakers
See the owner's manual in the vehicle glove box for more information on the features, use and operation of each of the available audio systems.
INTERFERENCE ELIMINATION
Some components used on the vehicles are equipped with a capacitor to suppress radio frequency interference/static. Ground straps are also used on the engine and muffler for this same purpose.
Capacitors are mounted in various locations internal to the alternator, instrument cluster and windshield wiper motor.
To eliminate radio interference, ground straps are used in different areas of the vehicle. These ground circuits should be securely tightened to assure good metal to metal contact. The ground straps conduct very small high frequency electrical signals to ground and require clean surface contact are(a) The radio ground wire is supplied from the instrument panel through mounting brackets when the radio is installed. Some engines have other ground straps to eliminate further radio interference:
- Engine to shock tower.
- Muffler to bumper bracket on all engines
Radio resistance type spark plug cables in the high tension circuit of the ignition system complete the interference suppression. Faulty or deteriorated spark plug wires should be replaced.
POWER ANTENNA
The power operated radio antenna is a telescoping type antenna, extended and retracted by a reversible electric motor.
The Automatic Power Antenna is controlled by a combination of an internal relay and limit switches which, are built into the antenna motor housing. This antenna is actuated when the radio is switched ON and the ignition switch in ON or ACCESSORY position. When the ignition switch or the radio is turned OFF the antenna mast should retract fully.
Many antenna problems may be avoided by frequent cleaning of the antenna mast telescoping sections. Clean the antenna mast sections with a clean soft cloth. Do not lubricate the mast, This attracts dirt and off sets its operation.
Before an antenna is removed, the antenna performance should be tested to decide if it is a reception problem or an operational problem.
Whenever a operational malfunction occurs, first verify that the radio antenna cable is properly connected. Check all connectors before starting normal diagnosis and repair procedures.
REMOTE AMPLIFIER
The amplifier is located under the right front seat.
When the radio system is ON, and all or some speakers are not operating or have a noise distortion refer to the diagnostic tests.
REMOTE CD CHANGER
The remote CD changer is located in the center console and is capable of holding up to six discs in a magazine.
The magazine can be ejected at anytime that the ignition switch is in the ON position. After the ignition switch is turned OFF, the magazine can only be ejected within one minute. After that period, the magazine will be locked in the CD changer.