Driver/Vehicle Information Display: Description and Operation
MULTI-CENTER DISPLAYGENERAL DESCRIPTION
Two types of multi-center display are available; low grade type and middle grade type. The middle grade type display can show a message based on information, which is obtained via M bus and CAN bus communication. In addition, the middle grade type display offers a service mode function (self-diagnosis), overwrite (customize) function of the ETACS and multi-center display setting.
CHARACTER DISPLAY FUNCTION OF LOW GRADE MULTI-CENTER DISPLAY
- Clock display (incorporating clock)
- Audio system operation display (communicating with radio and CD player via M bus)
- Compass display (incorporating compass sensor)
- Ambient air temperature display (communicating with the Ambient sensor)
GRAPHICAL DISPLAY FUNCTION OF MIDDLE GRADE MULTI-CENTER DISPLAY
- Clock display (incorporating clock)
- Calendar display
- Audio system operation display (communicating with radio, CD player and CD changer via M bus)
- Speaker test display (communicating with radio, CD player and CD changer via M bus)
- Compass display (incorporating compass sensor)
- Ambient air temperature display (communicating with the A/C-ECU via CAN bus)
- Freeze warning display (communicating with the A/C-ECU via CAN bus)
- A/C operation display (communicating with the A/C ECU via CAN bus)
MULTI-CENTER DISPLAY SYSTEM
Multi-center Display System <Middle Grade Type>:
COMMUNICATION ERROR PROCESSING
The multi-center display unit (middle grade type) communicates with specific units via CAN and M bus lines. If an abnormality occurs (such as communication cancellation, interruption or out-of-range data), the screen will be frozen for some time. If a correct signal is received within specific period after that, the screen will be updated. If not, "COMMUNICATION ERROR" will be displayed on the screen. This screen indicates a failure in the multi-center display unit (middle grade type) itself, communication error with relevant units, components or sensor. In this case, you can pinpoint a trouble spot according to the CAN communication DTC code chart.
