TUNER AND AMP UNIT [WITH CENTER DISPLAY]

id0920zz113500


Purpose

•  Controls the audio signal from the entertainment system-related parts.

Function


Tuner switching function

•  The tuner and amp unit (TAU) switches the tuner mode built-into the TAU based on the control signal sent from the connectivity master unit (CMU).


Audio signal output function

•  The TAU outputs the audio signal sent from the following units to the speakers.
―  CMU
―  CD player
―  DVD/CD player
―  Auxiliary jack/USB port/SD card slot hub (only auxiliary jack)


RS485 *1 signal conversion function

Note
•  The RS485*1 signal wiring harness is used in the following cases:
RDS-TMC
―  Traffic information such as location and length of traffic jams is sent to CMU from TAU
•  The TAU creates data from the radio waves received from the center roof antenna and converts the created data to a RS485 signal and sends it to the CMU.
*1  :RS485 corresponds to a linear, multi-drop configuration with bi-directional transmission, which is one of the possible types of serial communication, having a maximum transmission speed of 10 Mbps.


ALC (auto level control) function

•  When the TAU receives the vehicle speed signal sent from the instrument cluster, it automatically changes the volume and audio quality according to the vehicle speed and compensates for the passengers' sense of a lack of audio volume which occurs as a result of external noise while driving.


Specification

Item

Specification
Rated voltage
(V)
12
Frequency range
AM
(kHz)
522—1629 (With AM frequency pitch: 9KHz pitch)
530—1620 (With AM frequency pitch: 5KHz pitch)
531—1602 (European (L.H.D. U.K.) specs.)
FM
(MHz)
87.5—108
Amplifier maximum output
(W)
With Bose®:281
Without Bose®:25×4
Output impedance
(ohm)
4


Construction

•  The TAU unit is located in the upper part of the front side trim (RH).
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Input/output signal table

VIN serial No.100001—

Terminal

Signal
1A
—
1B
—
1C
—
1D
—
1E
—
1F
—
1G
—
1H
—
1I
AUX audio input LH (+)
1J
AUX audio input LH/RH (-)
1K
AUX audio input RH (+)
1L
AUX connection detection
1M
With CD player : CD audio input LH (+)
With DVD/CD player : DVD/CD audio input LH (+)
1N
With CD player : CD audio input LH (-)
With DVD/CD player : DVD/CD audio input LH (-)
1O
With CD player : CD audio input RH (+)
With DVD/CD player : DVD/CD audio input RH (+)
1P
With CD player : CD audio input RH (-)
With DVD/CD player : DVD/ CD audio input RH (-)
1Q
CMU audio input LH (+)
1R
CMU audio input LH (-)
1S
CMU audio input RH (+)
1T
CMU audio input RH (-)
1U
—
1V
—
1W
RS485 signal (+)
1X
RS485 signal (-)
2A
Without Bose® : Door speaker/tweeter output LH (+)
With Bose® : Front speaker output LH (+)
2B
B+
2C
Without Bose® : Door speaker/tweeter output LH (-)
With Bose® : Front speaker output LH (-)
2D
Without Bose® : Door speaker/tweeter output RH (+)
With Bose® : Front speaker output RH (+)
2E
—
2F
Without Bose® : Door speaker/tweeter output RH (-)
With Bose® : Front speaker output RH (-)
2G
—
2H
Without Bose® : —*2
With Bose® : —
2I
Without Bose® : Vehicle speed input signal
With Bose® : —
2J
Without Bose® : —
With Bose® : Audio amplifir control
2K
—
2L
—
2M
—
2N
—
2O
Local HS-CAN_H
2P
—
2Q
Local HS-CAN_L
2R
ACC
2S
Without Bose® : Driver-side headrest speaker output LH (+)
With Bose®: Rear speaker output LH (+)
2T
Without Bose® : —
With Bose® : AudioPilot®
2U
Without Bose® : Driver-side headrest speaker output LH (-)
With Bose® : Rear speaker output LH (-)
2V
Without Bose® : Driver-side headrest speaker output RH (+)
With Bose® : Rear speaker output RH (+)
2W
Ground
2X
Without Bose® : Driver-side headrest speaker output RH (-)
With Bose® : Rear speaker output RH (-)
3A
Antenna amplifier power supply
3B
Radio input
3B'
Ground
4A
DAB radio input*3
4A'
Ground*3

*2  :Not used
*3  :With DAB radio

VIN serial No. 200001—, VIN serial No. 300001—

Terminal

Signal
1A
—
1B
—
1C
—
1D
—
1E
—
1F
—
1G
—
1H
—
1I
AUX audio input LH (+)
1J
AUX audio input LH/RH (-)
1K
AUX audio input RH (+)
1L
AUX connection detection
1M
CD audio input LH (+)
1N
CD audio input LH (-)
1O
CD audio input RH (+)
1P
CD audio input RH (-)
1Q
CMU audio input LH (+)
1R
CMU audio input LH (-)
1S
CMU audio input RH (+)
1T
CMU audio input RH (-)
1U
Audio amplifir control*4
1V
—
1W
RS485 signal (+)
1X
RS485 signal (-)
1Y
AudioPilot®*4
1Z
—
1AA
Local HS-CAN_H
1AB
Local HS-CAN_L
1AC
—
1AD
—
1AE
—
1AF
—
2A
Ground
2B
—
2C
—
2D
—
2E
—
2F
ACC
2G
Vehicle speed input signal*5
2H
—
2I
—
2J
Rear door speaker output LH (-)
2K
Rear door speaker output RH (-)
2L
Rear door speaker output LH (+)
2M
Rear door speaker output RH (+)
2N
Front door speaker output LH (-)
2O
Front door speaker output RH (-)
2P
Front door speaker output LH (+)
2Q
Front door speaker output RH (+)
2R
—
2S
—
2T
B+
3A
Antenna amplifier power supply
3B
Radio input
3B'
Ground
4A
DAB radio input*6
4A'
Ground*6

*4  :With Bose®
*5  :Without Bose®
*6  :With DAB radio

Operation

•  For the TAU operation, refer to the [ENTERTAINMENT SYSTEM]. (See ENTERTAINMENT SYSTEM [WITH CENTER DISPLAY].)

Fail-safe

•  Not applicable