AUDIO AMPLIFIER [WITH CENTER DISPLAY]

id0920zz011200


Purpose

•  The audio signal (analog voltage waveform) output from the unit equipped on the vehicle is converted into a digital pulse. The converted digital pulse signal is amplified, converted to an analog signal again, and sent to the speakers.

Function


Road noise correction system (AudioPilot®)

•  The volume of the music constituent obscured by noise is corrected by the audio amplifier based on the cabin noise measured by the AudioPilot® microphone and the vehicle speed signal sent from the instrument cluster.


On-board diagnostic function

•  The audio amplifier has an on-board diagnostic function to facilitate system diagnosis. DTCs are stored in the event of a malfunction occurring. For details, refer to the [ON-BOARD DIAGNOSTIC]. (See ON-BOARD DIAGNOSTIC [AUDIO AMPLIFIER (WITH CENTER DISPLAY)]


Construction

•  The audio amplifier is located in the side shelf (RH).
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Terminal Layout and Signal

L.H.D.

Terminal

Signal
1A
—
1B
—
1C
—
1D
—
1E
—
1F
—
1G
AudioPilot® microphone (+)
1H
AudioPilot® microphone (+)
1I
Rear speaker input RH (+)
1J
Rear speaker input RH (-)
1K
Rear speaker input LH (+)
1L
Rear speaker input LH (-)
1M
Front speaker input RH (+)
1N
Front speaker input RH (-)
1O
Front speaker input LH (+)
1P
Front speaker input LH (-)
2A
—
2B
—
2C
Passenger-side headrest speaker output LH (-)
2D
Audio amplifier control
2E
Passenger-side headrest speaker output LH (+)
2F
Top lock switch input
2G
Passenger-side headrest speaker output RH (+)
2H
Pulse width modulation (PWM) control
2I
Passenger-side headrest speaker output RH (-)
2J
—*1
2K
Driver-side headrest speaker output RH (-)
2L
HS-CAN_H
2M
Driver-side headrest speaker output RH (+)
2N
HS-CAN_L
2O
Driver-side headrest speaker output LH (+)
2P
Driver-side headrest speaker output LH (-)
3A
B+
3B
Ground
3C
Door speaker output LH (+) / tweeter output LH (+)
3D
Door speaker output LH (-) / tweeter output LH (-)
3E
Woofer output (+)
3F
Woofer output (-)
3G
Door speaker output RH (+) / tweeter output RH (+)
3H
Door speaker output RH (-) / tweeter output RH (-)

**1  :Not used

R.H.D.

Terminal

Signal
1A
—
1B
—
1C
—
1D
—
1E
—
1F
—
1G
AudioPilot® microphone (+)
1H
AudioPilot® microphone (+)
1I
Rear speaker input RH (+)
1J
Rear speaker input RH (-)
1K
Rear speaker input LH (+)
1L
Rear speaker input LH (-)
1M
Front speaker input RH (+)
1N
Front speaker input RH (-)
1O
Front speaker input LH (+)
1P
Front speaker input LH (-)
2A
—
2B
—
2C
Passenger-side headrest speaker output RH (+)
2D
Audio amplifier control
2E
Passenger-side headrest speaker output RH (-)
2F
Top lock switch input
2G
Passenger-side headrest speaker output LH (+)
2H
Pulse width modulation (PWM) control
2I
Passenger-side headrest speaker output LH (-)
2J
—*2
2K
Driver-side headrest speaker output RH (-)
2L
HS-CAN_H
2M
Driver-side headrest speaker output RH (+)
2N
HS-CAN_L
2O
Driver-side headrest speaker output LH (+)
2P
Driver-side headrest speaker output LH (-)
3A
B+
3B
Ground
3C
Door speaker output RH (+) / tweeter output RH (+)
3D
Door speaker output RH (-) / tweeter output RH (-)
3E
Woofer output (+)
3F
Woofer output (-)
3G
Door speaker output LH (+) / tweeter output LH (+)
3H
Door speaker output LH (-) / tweeter output LH (-)

*2  :Not used

Operation

1.  The audio amplifier amplifies the audio signal sent (1) from the tuner and amp unit (TAU) and sends (2) it to the speakers.
2.  The speakers produce (3) audio based on the audio signal sent from the TAU.
amxuun00000650

Fail-safe

•  Not applicable