Instrument Cluster Description and Operation

Description

Communication Network Diagram

Abbreviation	Description
ACU	Airbag Control Unit
AEB	Autonomous Emergency Braking
AMP	Amplifier
AVN	Head Unit (Audio/AVN)
B_CAN	Body Controller Network
BCM	Body Control Module
BCW	Blind-Spot Collision Warning Indicator
C_CAN	Chassis Controller Area Network
CLU	Cluster Module
CAMERA	Rearview Camera
M_CAN	Multimedia Controller Network
MDPS	Motor Driven Power Steering
P_CAN	Power Train Controller Area Network
SJB	Smart Junction Box
SMK	Smart Key Unit

Cluster Option Coding. Since the vehicle has more options (ESC, MDPS, SCC, etc.), the instrument cluster now has more information to display depending on the selected options. For this reason, it is necessary to know the options of the current vehicle when replacing the instrument cluster. To solve this problem, a learning course is performed based on the required option for the vehicle when replacing the instrument cluster. This is called variant coding. Function

1. 1
   High-Speed CAN Communication (C-CAN)

   • Custom Function: Welcome Light (Lighting Delay Function)
   • LDW: Lane Departure Warning
   • SPAS: Smart Parking Assist System
2. 2
   Low-Speed CAN Communication (MM-CAN)

   • AV: Audio/Video Multimedia Information Display
   • TBT: Turn-by-Turn Navigation Information Display
3. 3
   Sound Output. The instrument cluster and external speakers are connected to output various signals and sound effects. If an external amplifier is applied, the directional alarm is output through the amplifier.

   

4. 4
   User Setting Mode (USM)
   The settings can be changed using the switches (MENU, UP, DOWN and OK button). There are many items (for example, In/Out Seat Synchronization, In/Out Steering Wheel Synchronization, Auto Door Lock, Auto Door Unlock Cancel, Headlamp Follow Me, Welcome Light, Welcome Sound, One-touch Turn Signal, Average Fuel Consumption Auto Reset, Brightness and Content Setting) that can be set and adjusted. The signal flow during setting is as follows.

   1. USM settings are configured and transmitted to the BCM.
   2. The BCM transmits the settings via B-CAN to the corresponding modules.
   3. The module completes the setting and transmits the changed setting to the BCM.
   4. The BCM transmits the final settings via C-CAN to the cluster.