DTC U121F: Av Control Unit: Description

Replace the AV control unit if this DTC is displayed. Refer to "EXPLODED VIEW ".

DTC LOGIC

Part name	Description
AV CONTROL UNIT	Integrates hard disk drive (HDD) allowing map data and music data to be stored. It is the master unit of the MULTI AV system, and it is connected to each control unit by communication. It operates each system according to communication signals from the AV control unit. The AV control unit includes the audio, hands-free phone, voice control, navigation, satellite radio, and vehicle information functions. It is connected to ECM and unified meter and A/C amp. via CAN communication to obtain necessary information for the vehicle information function. It is connected to BCM via CAN communication transmitting/receiving for the vehicle settings function. It inputs the illumination signals that are required for the display dimming control. It inputs the signals for driving status recognition (vehicle speed, reverse and parking brake). BOSE amp. ON signal, sound signal and mode change signal transmitted to BOSE amp. Update of map data is performed with the CONSULT-III and the applicable cable.

Part name

Description

AV CONTROL UNIT

Integrates hard disk drive (HDD) allowing map data and music data to be stored.
It is the master unit of the MULTI AV system, and it is connected to each control unit by communication. It operates each system according to communication signals from the AV control unit.
The AV control unit includes the audio, hands-free phone, voice control, navigation, satellite radio, and vehicle information functions.
It is connected to ECM and unified meter and A/C amp. via CAN communication to obtain necessary information for the vehicle information function.
It is connected to BCM via CAN communication transmitting/receiving for the vehicle settings function.
It inputs the illumination signals that are required for the display dimming control.
It inputs the signals for driving status recognition (vehicle speed, reverse and parking brake).
BOSE amp. ON signal, sound signal and mode change signal transmitted to BOSE amp.
Update of map data is performed with the CONSULT-III and the applicable cable.