Audio, Visual, Navigation System (Integrated Control System): Overview Nissan Juke I

Component Description

Scheme 70

1. A multi display unit integrating a color display and an operation panel is adopted.
2. It is connected to other units via CAN communication and performs the drive mode control, air conditioner control, display of various information, and various settings.
3. The display can show the drive mode (NORMAL, SPORT, ECO), drive information (travel time, mileage, average vehicle speed), ECO information (fuel consumption history), setting screen as well as engine power, providing information on the vehicle status according to the driver's operation.
4. For the operation switch section, newly developed unique switches are adopted, which respectively have 2 types of symbols and functions.

SYSTEM DESCRIPTION

1. The multi display unit receives necessary information for controlling the following functions from the respective units via CAN communication. D-MODE function Information display/setting Air conditioner adjustment function. Refer to " «SYSTEM DESCRIPTION»(ref-516424-S35856232022012120600000) ".
2. The multi display unit transmits the status of user-selected D-MODE (NORMAL, SPORT, or ECO) to the TCM (CVT models), ECM (M/T models), EPS control unit and A/C auto amp. For the D-MODE functions, refer to " «SYSTEM DESCRIPTION»(ref-516459-S03159194912012120600000) ".
3. TCM transmits to ECM the D-MODE status (NORMAL, SPORT, or ECO) received from the multi display unit (CVT models).
4. ECM (M/T models) and EPS control unit receives the D-MODE status (NORMAL, SPORT, or ECO) from the multi display unit.
5. The A/C auto amp. receives the air conditioner switch operation signal, ECO mode signal, and ECO mode switch signal from the multi display unit.
6. The multi display unit integrates a diagnosis function that allows a diagnosis by CONSULT.

Nissan Dynamic Control System Display/Setting Functions

Engine Torque Gauge

The engine torque gauge displays the engine torque level in 5 grades based on the engine torque signal received from ECM via CAN communication.

Scheme 71

Scheme 72

Voltmeter

The voltmeter reads the input voltage of the multi display unit and displays the voltage level in 5 grades according to the reading.

Scheme 73

Boost Gauge

The boost gauge displays the boost level in 5 grades based on the boost pressure signal received from ECM via CAN communication.

Scheme 74

Scheme 75

Instantaneous Fuel Consumption

The instantaneous fuel consumption gauge displays the instantaneous fuel consumption in 5 grades, which is calculated from the fuel consumption monitor signal received from ECM via CAN communication and the vehicle speed signal received from the combination meter via CAN communication.

Scheme 76

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G-Force

The G-FORCE gauge displays the decel G level and side G level in 3 grades respectively, which are calculated based on the decel G sensor signal and side G sensor signal received from the ABS actuator and electric unit (control unit) via CAN communication.

Scheme 78

Drive Information

The travel time, average speed, and mileage are displayed as follows.

Scheme 79

1. Travel time: Displays the time calculated by the multi display unit.
2. Average speed: Calculated from the odometer signal and vehicle speed signal received from the combination meter via CAN communication.
3. Mileage: Calculated from the odometer signal and vehicle speed signal received from the combination meter via CAN communication.

ECO Information

The fuel economy record is calculated from the fuel consumption monitor signal received from ECM via CAN communication and the vehicle speed signal received from the combination meter via CAN communication.

Scheme 80

Set Up

The following items can be set.

Scheme 81

1. Display Brightness
2. Button Brightness
3. Select Language
4. Select Units
5. Clock Time Setting
6. CLIMATE ECO
7. Auto Interior Illumination
8. Selective Door Unlock
9. Auto Headlight Sensitivity

Display/operation restrictions

1. To secure safety, some functions are not allowed for user operation during driving.
2. The functions subject to the display/operation restriction are as follows.

Driving status judgment criterion

Scheme 82

1. The driving status is judged from the vehicle speed signal received from the combination meter via CAN communication. The driving status is displayed on the multi display unit and operation restrictions are applied as necessary.

1. The engine torque, engine power, boost, and instantaneous fuel consumption are provided for information purposes only. They are not intended to prompt the driver to adjust driving style. The readings may be slightly delayed relative to the actual vehicle behaviors. This is not a malfunction.
2. The voltmeter reading cannot be used as an indicator for battery replacement because it indicates the input voltage to the multi display unit, not the battery voltage.
3. The SET UP screen are viewable and operable only while the vehicle is stopped.
4. The ECO information screen is operable only while the vehicle is stopped.
5. If no time setting is performed, the daily and weekly fuel consumption history data are not displayed.
6. The readings may differ from the actual values depending on driving conditions.

Description

CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-board multiplex communication line with high data communication speed and excellent error detection ability. A modern vehicle is equipped with many ECUs, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, 2 control units are connected with 2 communication lines (CAN-L-line and CAN-H-line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.

Refer to " CAN COMMUNICATION SYSTEM: CAN COMMUNICATION SIGNAL CHART " for details of the communication signal.

Initial diagnosis of multi display unit

See also:
• DTC INDEX