DTC U121E: Av Control Unit: Description

WARNING: This page is about a different car, the 2008 Infiniti M45 and 2008 Infiniti M35. However, it is still accessible from the selected car via links, so may be relevant.

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

PART DESCRIPTION

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 is connected to the steering angle sensor and receives the steering angle signal via CAN communication. It also transmits the steering angle signal to camera control unit via AV communication. 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). Update of map data is performed with the CONSULT-III and the applicable cable. It includes the TEL adapter and Bluetooth™ function.

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 is connected to the steering angle sensor and receives the steering angle signal via CAN communication. It also transmits the steering angle signal to camera control unit via AV communication.
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).
Update of map data is performed with the CONSULT-III and the applicable cable.
It includes the TEL adapter and Bluetooth™ function.