Radio/Stereo: Description and Operation

INTRODUCTION
For operation of the factory installed standard and optional radios with cassette or compact disc player, refer to the Sound Systems Operating Instructions in the Owners Manual supplied with the vehicle.

The vehicles are shipped with fuse 13 removed from the junction block. The fuse replaces the ignition-off draw (IOD) connector. Fuse 13 is a ten amp fuse. When removed, it prevents the battery from discharging during storage.

There are four different system combinations available on the LH models. They are a Base, Midline, Infinity I, and Infinity II system.

Base System
The Base system includes:

Base Radio:

- AM-FM stereo radio with cassette player.
- Two 6.5 inch round, full-range speakers in the front doors.
- Two 6 x 9-inch, full-range speakers mounted in the rear shelf panel.
- Two 2.5 inch, round single-cone speakers in the lower front corners of the front door windows.

Midline System
The Midline system includes:

AM/FM Stereo/CD With Remote CD Changer Controls:

- AM-FM radio with cassette player.
- AM-FM stereo radio with CD player and remote CD changer controls (optional).
- A compact 120 watt power amplifier with four output channels.
- Two 2.5 inch, round single-cone speakers in the lower front corners of the front door windows.
- Two 6.5 inch, round single-cone speakers in the front doors.
- Two 6 x 9-inch, coaxial speakers mounted in the rear shelf panel.

Infinity I System
The Infinity 1 system includes:

AM/FM Stereo/Cassettes With Remote CD Changer Controls:

- AM-FM stereo radio with cassette player and remote CD changer controls.
- AM-FM stereo radio with CD player and remote CD changer controls (optional).
- AM-FM stereo radio with CD and cassette player (optional).
- A 240 watt Infinity power amplifier with six out-put channels
- One 2.5 inch, round single-cone, spatial imaging speaker in the center of the instrument panel.
- Two 2.5 inch, coaxial speakers in the lower corners of the front door windows.
- Two 6.5 inch, round single-cone speakers in the front doors.
- Two 6 x 9-inch, single-cone speakers mounted in the rear shelf panel.

Infinity II
The Infinity II system includes:

AM/FM Stereo CD/Cassette Radio:

- AM-FM radio with CD and cassette.
- A 320 watt power amplifier with nine output channels, one for each speaker location.
- One 2.5 inch, round single-cone, spatial imaging speaker in the center of the instrument panel.
- Two 2.5 inch, coaxial speakers in the lower corners of the front door windows.
- Two 6.5 inch, round single-cone speakers in the front doors.
- Two 6 x 9-inch, single-cone speakers mounted in the rear shelf panel.
- Two 2.5 inch, round speakers mounted in the rear doors.

SYSTEM OPERATION
Interference Elimination
Some components used on the vehicles are equipped with a capacitor to suppress radio frequency interference/static.

Capacitors are mounted in various locations internal to the generator, instrument cluster and windshield wiper motor.

A ground strap is mounted from the engine to shock tower. The ground straps should be securely tightened to assure good metal to metal contact. Ground straps conduct very small high frequency electrical signals to ground and require clean large surface area contact. The radio grounds to the cross car beam through pinch brackets that grounds automatically as the radio is installed into the instrument panel.

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.

Rear Window Antenna

Rear Defogger / Antenna Module:

The integrated rear window antenna incorporates the rear window defogger and a electronic module to receive radio signals. The module is located in the right C-pillar behind the trim panel.

The FM signal is received via the heated portion of the rear window defogger grid. The AM signal is received via two isolated unheated lines along the top of the rear window.

NOTE:
- If aftermarket window shading is added, it cannot be of the metallic type. Metallic type window shading can cause poor radio reception.
- If an accessory cellular phone glass mount antenna is installed, it should only be along the center of the window, not touching any conductive lines in the area indicated.

Remote Amplifier
Midline And Infinity I System
The amplifier is located in the right front cowl panel.

Infinity II System
The amplifier is located beneath the trunk liner covering the right quarter inner panel.

When the radio system is ON, and all or some speakers are not operating or have a noise distortion refer to the diagnostic tests.