CONNECTIVITY MASTER UNIT [WITH CENTER DISPLAY]

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Purpose, Function

Bluetooth^® communication function

•  The CMU uses the integrated Bluetooth^® driver and antenna to perform communication between Bluetooth^®-enabled devices and Bluetooth^®.

•  To perform Bluetooth^® communication, pairing of a Bluetooth^®-enabled device with the CMU is required to specify the device. For the pairing method, refer to the [Bluetooth^® PAIRING PROCEDURE] in the workshop manual.

Specification

Note

•  The profile indicates the wireless communication standard. If the profile of the Bluetooth^®-enabled device differs from the CMU, wireless transmission may not be possible. In addition, depending on the profile version, the corresponding functions differ.

Operation signal reception function

•  The CMU controls units related to the entertainment system based on the following operation signals which are sent in conjunction with the user operations from the operation signal output unit.

Operation signal output unit	Operation signal
Center display	LVDS signal (touch position operation signal)
Commander switch	Commander switch operation signal
Steering switch	Steering switch operation signal
Voice recognition microphone	Voice signal (voice command)

LVDS^*2 signal conversion function

Note

•  Communication between the CMU and the center display is performed via the LVDS communication line.

•  The CMU converts signals sent from the following units to a LVDS signal and displays each type of information in the center display.

Output unit	Video signal/display request signal
Tuner and amp unit (TAU)	•  Radio broadcast logo, album art, song name •  Traffic information such as location and length of traffic jams
CD player	•  Playback file information (artist/song name)
DVD/CD player	•  DVD information (video) during playback
Auxiliary jack/USB port/SD card slot hub	•  Information for file being played (artist/song name)
Devices such as Bluetooth®-enabled mobile phones and or mobile devices such as Smartphones/Bluetooth®-enabled devices	•  Telephone book, incoming call record •  Radio broadcast logo, album art, song name
Rear mount camera	•  Image at rear of vehicle
CMU	•  Incoming call pop-up screen display •  Fuel economy monitor screen •  Warning guidance screen display •  Navigation screen display •  Temperature warning pop-up screen display

•  By converting the video signal to a LVDS signal, the CMU is able to display stable images in the center display virtually free from the effects of noise.

•  The LVDS communication pathway between the CMU and the center display corresponds to HDCP^*3.

Audio transmission signal function

•  The CMU sends the audio signal received from the following units to the TAU.

―  Auxiliary jack/USB port/SD card slot hub

―  Devices such as Bluetooth^®-enabled mobile phones and or mobile devices such as Smartphones/Bluetooth^®-enabled devices

•  The CMU receives audio signals from the voice recognition microphone and performs control according to the commands.

Fuel economy function

•  The CMU receives the fuel consumption amount and travel distance information signal from the instrument cluster and displays it in the center display as the fuel economy monitor. For details, refer to the fuel economy monitor of the [CENTER DISPLAY]. (See CENTER DISPLAY [WITH CENTER DISPLAY].)

Navigation function

•  The CMU performs map display and route guidance based on the position information received from the GPS antenna and the map information received from the auxiliary jack/USB port/SD card slot hub. For details, refer to the [ENTERTAINMENT SYSTEM] navigation function. (See ENTERTAINMENT SYSTEM [WITH CENTER DISPLAY].)

Automatic configuration function

•  When the ignition is switched ON (engine off or on) after the CMU is replaced, the CMU reads the vehicle specification information sent from the instrument cluster, and stores the vehicle specification information.

On-board diagnostic function

•  The CMU 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 [ENTERTAINMENT SYSTEM (WITH CENTER DISPLAY)].)

Diagnostic assist function

•  The CMU has a diagnostic assist function which can verify the following. For details, refer to the [ON-BOARD DIAGNOSTIC]. (See ON-BOARD DIAGNOSTIC [ENTERTAINMENT SYSTEM (WITH CENTER DISPLAY)].)

―  Connection status of related parts

―  Operation status of related parts

―  Related part specifications

Construction

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Input/output signal table

Terminal		Signal
	1A	Rear mount camera power signal*5
	1B	Rear mount camera signal ground*5
	1C	Rear mount camera power supply*5
	1D	Rear mount camera power supply ground*5
	1E	—
	1F	—
	1G	—
	1H	—
	1I	—
	1J	—
	1K	iPod video signal*4
	1L	iPod video signal ground*4
	1M	Steering1 switch input
	1N	Steering2 switch ground input
	1O	Steering3 switch input
	1P	Microphone connection detection
	1Q	Microphone power supply
	1R	Microphone power supply ground
	1S	Microphone voice input (+)
	1T	Microphone voice input (-)
	1U	—
	1V	—
	1W	—
	1X	—
	1Y	CMU audio output LH (+)
	1Z	CMU audio output LH (-)
	1AA	CMU audio output RH (+)
	1AB	CMU audio output RH (-)
	2A	—
	2B	—
	2C	Ground
	2D	Ground
	2E	HS-CAN_H
	2F	HS-CAN_L
	2G	—
	2I	Local HS-CAN_H
	2J	Local HS-CAN_L
	2K	LIN communication
	2L	Ground
	2M	—
	2O	RS485 signal (+)
	2P	RS485 signal (-)
	2Q	ACC
	2R	B+
	2S	—
	2T	—
	3A	—
	3B	LVDS (+)
	3C	—
	3D	LVDS (-)
	4A	Ground
	4B	USB data (+)
	4C	USB power supply
	4D	USB data (-)
	5A	GPS
	5A'	Ground

Operation

Fail-safe

―  Sends a temperature warning pop-up screen display request signal to the center display and displays the temperature warning pop-up screen on the LCD.

―  Temporarily lowers the brightness of the center display LCD. This is to protect the center display LCD and the circuit.