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AUDIO AV-7 C D E F G H I J L M A B AV Ground is supplied through the case of the audio unit. ● to BOSE speaker amp. terminal 17 ● through body ground B5 and B29. Audio unit and A/C and audio controller are connected by FPC (Flexible Print Circuit). ● through audio unit terminals 1, 2, 3, 4, 13, 14, 15, and 16 ● to BOSE speaker amp. terminals 23, 24, 25, 26, 27, 28, 29, and 30. Audio signals are amplified by the BOSE speaker amp. ● through BOSE speaker amp. terminals 13, 14, 15, and 16 ● to terminals 1 and 2 of front door speaker LH and RH ● to terminals 1 and 2 of tweeter LH and RH, ● through BOSE speaker amp. terminals 9, 10, 11, and 12 ● to terminals 1 and 2 of rear door speaker LH and RH, ● through BOSE speaker amp. terminals 2, 3, 18 and 19 ● to terminals 1 and 2 of woofer LH and RH. Without Telephone System When one of steering wheel audio control switches is pressed to volume up seek up or mode ON, the resis- ● from audio unit terminal 22 ● through combination switch (spiral cable) terminals 24 and 20 ● to steering wheel audio control switch. Ground is supplied ● from steering wheel audio control switch ● through combination switch (spiral cable) terminals 17 and 31 ● to audio unit terminal 25. When one of steering wheel audio control switches is pressed to volume down, seek down or power ON, the ● from audio unit terminal 23 ● through combination switch (spiral cable) terminals 32 and 16 ● to steering wheel audio control switch. Ground is supplied ● from steering wheel audio control switch ● through combination switch (spiral cable) terminals 17 and 31 ● to audio unit terminal 25. With Telephone System When one of steering wheel audio control switches is pressed to volume up, seek up or PTT ON, the resis- ● from audio unit terminal 12 ● through combination switch (spiral cable) terminals 24 and 20 ● to steering wheel audio control switch. Ground is supplied |