CONNECTIVITY MASTER UNIT [WITH CENTER DISPLAY]

id0920zz113400

Purpose, Function

Bluetooth^® communication function

•  The CMU uses the integrated Bluetooth^® driver and antenna to perform communication between Bluetooth^® enabled mobile devices, such as a Smartphone, and Bluetooth^®.

•  To perform Bluetooth^® communication, pairing of mobile device with the CMU is required to specify the Bluetooth^® enabled mobile device. Refer to the workshop manual for the pairing method.

Specification

Note

•  The profile indicates the wireless communication standard. If the profile of Bluetooth^®-enabled devices differs from the CMU, wireless communication is not possible. In addition, depending on the profile version, 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.

Operation signal output unit	Operation signal
Center display	LVDS signal (touch position operation signal)
Commander switch	Command switch operation signal
Steering switch	Steering switch operation signal
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. (See CENTER DISPLAY [WITH CENTER DISPLAY].)

Output unit	Video signal/display request signal
TAU	•  Traffic information such as location and length of traffic jams
CD player	•  Playback file information (artist/song name)
Auxiliary jack/USB port/SD card slot hub	•  Information for file being played (artist/song name)
Mobile device such as Smartphone	•  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 •  Navigation screen display •  Warning guidance 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 communication pathway between the CMU and the center display corresponds to HDCP^*3.

Audio transmission signal function

•  The CMU transmits the audio signal received from a mobile device such as the following auxiliary jack/USB port/SD card slot hub and Smartphone devices to the TAU. The CMU receives audio signals from the voice recognition microphone and performs operations according to the commands.

Fuel economy monitor function

•  The CMU receives fuel consumption amount and travel distance information sent from the instrument cluster via CAN to calculate the average fuel consumption. The calculated average fuel consumption information is displayed as fuel economy monitor in the center display. 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 map data received from the position information and the auxiliary jack/USB port/SD card slot hub. For details, refer to the entertainment system navigation function. (See ENTERTAINMENT SYSTEM [WITH CENTER DISPLAY].)

Turn-by-turn (TBT)

•  The turn-by-turn (TBT) function displays the travel direction of the route guidance in the active driving display. The turn-by-turn (TBT) operates when all of the following conditions have been met. For details, refer to the turn-by-turn (TBT) of entertainment system navigation function. (See ENTERTAINMENT SYSTEM [WITH CENTER DISPLAY].)

―  Route guidance of navigation function is operating

―  Navigation is set to ON using the active driving display personalization feature

•   The CMU sends the turn-by-turn (TBT) display request signal to the instrument cluster to display the direction heading and distance to branch points in the active driving display. (See ACTIVE DRIVING DISPLAY.)

TA (traffic announcement) function

•  If the TAU receives a TA broadcast while listening to the following modes, the CMU switches the audio to the TA broadcast automatically. In addition, the traffic alert screen is displayed in the center display.

―  FM radio

―  CD

―  USB

―  AUX

―  Bluetooth^® audio

―  Aha^™ radio

―  Sticher^™ radio

•  When the TA broadcast has finished, the audio unit returns to the mode that was being listened to before the TA broadcast. In addition, the center display cancels the traffic alert screen display and displays the screen prior to the traffic alert screen.

Traffic alert screen

Note

•  If the TA (traffic announcement) function is set to OFF, the audio does not switch automatically to TA broadcasts even if a TA broadcast is received.

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 via CAN communication 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 system. (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 system. (See ON-BOARD DIAGNOSTIC [ENTERTAINMENT SYSTEM (WITH CENTER DISPLAY)].)

―  Connection status of related parts

―  Operation status of related parts

―  Related part specifications

Construction

am3zzn00005719

Input/output signal table

Terminal		Signal
	1A	Rear mount camera video signal input*4
	1B	Rear mount camera signal ground*4
	1C	Rear mount camera power supply*4
	1D	Rear mount camera power supply ground*4
	1E	—
	1F	—
	1G	—*5
	1H	—*5
	1I	—
	1J	—
	1K	iPod video signal input
	1L	iPod video signal input
	1M	Steering switch1 input
	1N	Steering switch2 input
	1O	Steering switch3 input
	1P	Microphone connection detection
	1Q	Microphone power supply
	1R	Microphone power supply ground
	1S	Microphone voice input (+)
	1T	Microphone voice input (-)
	1U	—
	1V	Shield ground
	1W	—
	1X	Shield ground
	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 (+)
	2F	HS-CAN (-)
	2G	—
	2I	LOCAL HS-CAN (+)
	2J	LOCAL HS-CAN (-)
	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.