Radio, Stereo, and Compact Disc: Description and Operation

System Description

AUDIO SYSTEM
Refer to Owner's Manual for audio system operating instructions.

Power is supplied at all times
- through 15 A fuse [No. 52, located in the fuse, fusible link and relay block (J/B)]
- to audio unit terminal 73
- to CD auto changer terminal 12
- through 20 A fuse (No. 75, located in the fuse, fusible link and relay box)
- to BOSE speaker amp. terminal 11.

With the ignition switch in the ACC or ON position, power is supplied
- through 10 A fuse [No. 21, located in the fuse block (J/B) No.1]
- to audio unit terminal 72 and BOSE speaker amp. terminal 34.
- to CD auto changer terminal 16.

Ground is supplied through the case of the audio unit.

Ground is also supplied to CD auto changer terminal 15 through body grounds M24 and M114.

Ground is also supplied to BOSE speaker amp. terminal 27 through body grounds B217 and B256.

Audio unit is connected to BOSE speaker amp. as communication line.

When the audio unit is turned to the ON position, audio sound signals are supplied.
- through audio unit terminals 12,11
- to BOSE speaker amp. terminals 5, 6.

When the audio unit is turned to the ON position, audio signals are supplied.
- through terminals 79, 80, 81 and 82 of audio unit
- to terminals 39, 40, 38 and 41 of the BOSE speaker amp.
- through terminals 18, 19, 21, 20, 28, 12, 23, 22, 16, 17, 25, 24, 30 and 14 of the BOSE speaker amp.
- to instrument panel speakers and the front and rear door speakers and woofer terminals 1 and 2.

When steering switch pushed ON, signal is sent
- from steering switch terminal 2
- through combination switch (spiral cable) terminals 15 and 7
- to multi-function switch terminal 7, then
- to audio unit.

AV COMMUNICATION LINE
Audio system components (Audio unit, BOSE speaker amplifier, etc.) are connected by AV communication line and controlled by signals from the multi-function switch.

AUDIOPILOT(TM) SYSTEM
AudioPilot(TM)is the sound improving system that picks up any noises or the sound of music coming into the vehicle by a microphone equipped with audio unit, and that the BOSE speaker amp. revises the frequency feature of music at real time in response to the frequency feature of the noise while driving and listening to music.
- If low frequency area noise from vehicle is loud, it adjusts low frequency element of music to be bigger than vehicle noise.
- If high frequency area noise from vehicle is loud, it adjusts high frequency element of music to be bigger than vehicle noise.
- If vehicle noise is smaller than the setting volume, correction is not performed.

This compensate vehicle noise when listening to music.