Drive Mode System (Integrated Control System): Overview Nissan Juke I

Component Description

Scheme 2

1. The multi display unit connects to other units via CAN communication and performs the drive mode control.
2. The following 3 drive modes are available, NORMAL, SPORT, and ECO.
3. The drive mode can be changed over as desired by pressing the D-MODE select switch. The characteristics of the engine, CVT, steering and air conditioner are changed accordingly.
4. The display shows the current drive mode (NORMAL, SPORT, ECO) as well as the vehicle information for the mode.

Item Display content Display NORMAL mode Displays the input voltage to the multi display unit in 5 grades. Displays the engine torque in 5 grades. SPORT mode Displays the boost pressure in 5 grades. ECO mode Displays the instantaneous fuel consumption in 5 grades

Scheme 3

1. The multi display unit transmits the operation status of the drive mode switch to other units via CAN communication as the mode signal (refer below). NORMAL: ON/OFF SPORT: ON/OFF ECO: ON/OFF
2. Based on the mode signals received from TCM (CVT models) or multi display unit (M/T models) via CAN communication, ECM changes over the throttle position and other characteristics.
3. Based on the mode signals received from the multi display unit via CAN communication, TCM changes over the gear shift line and other characteristics.
4. Based on the mode signals received from the multi display unit via CAN communication, EPS C/U changes the steering assist characteristic.
5. Based on the ECO mode signal received from the multi display unit via CAN communication, the A/C auto amp changes over the set temperature correction.

CONTROL DESCRIPTION

1. The drive mode switch in the controller of the multi display unit is used to change over the vehicle mode and thus change the control characteristics for the engine, transaxle, steering, and air conditioner. FUNCTION APPLY LIST MR16DDT M/T CVT SPORTS ENGINE x x CVT x STEERING x x ECO ENGINE x x CVT x AIR CONDITIONER x x
2. With the NORMAL mode as the base mode, the control of vehicle characteristics is changed over to the following modes. SPORT: The control characteristics for the engine, transaxle, and steering system are changed so that a sporty feel is created in the driving behavior. ECO: The control characteristics for the engine, transaxle, and automatic air conditioner are changed to help improve the practical fuel economy. Control item Control mode Control SPORT NORMAL ECO ENGINE Throttle position characteristic x Half open - - Improves the engine response to acceleration pedal operation and enhances the torque feel. - - x Late opening Accelerates gently to assist in ECO driving. Speed limiter for throttle position - - x Controls the throttle position to a smaller level than NORMAL to help improve the practical fuel consumption. TRANSAXLE High speed gear shift line x - - Keeps the engine speed at a high level and improves the acceleration dynamism and response. Downshift upon braking x - - performs downshift upon braking before cornering to prevent a drop in the engine speed. Cornering ratio hold x - - Helps the vehicle clear a curve smoothly by restricting shift changes during cornering. Low speed gear shift line - - x Improves the practical fuel economy by controlling the engine speed to a low level. STEERING Assist characteristic x - - Changes the steering assist characteristic to enhance a stable steering feel. AIR CONDITIONER Air inlet control - - x Reduces the engine load by optimizing the air conditioner control to a level that does not adversely affect the interior comfort and thus helps improve the practical fuel economy. Blower fan control - - x

See also:
• INTEGRATED CONTROL SYSTEM: SYSTEM DESCRIPTION