System Description (2WD Models)

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System Description (2WD Models)

All the vehicles are equipped with an drive mode select switch switches a vehicle mode among ECO,NORMAL,TARMAC,GRAVEL and SNOW with the flick of a switch.
The drive mode selector changes the vehicle mode of the power train, combination meter, chassis function, and driver assistant system.

SYSTEM DIAGRAM

Component		Signal description
BCM		Mainly transmits the following signals to chassis control module via CAN communication. Drive mode switch signal
ECM		Mainly receives the following signals from chassis control module via CAN communication. Drive mode signal
TCM		Mainly receives the following signals from chassis control module via CAN communication. Drive mode signal
ABS actuator and electric unit (control unit)		Mainly receives the following signals from chassis control module via CAN communication. Drive mode signal
Combination meter		Mainly receives the following signals from chassis control module via CAN communication. Drive mode signal
Power steering control module		Mainly receives the following signals from chassis control module via CAN communication. Drive mode signal
ADAS control unit 2		Mainly receives the following signals from chassis control module via CAN communication. Drive mode signal

CONTROL DESCRIPTION

The drive mode selector switches a vehicle mode with the flick of a switch (drive mode select switch) mounted on upper part of the center console and changes the control characteristics of the power train, combination meter, chassis function, driver assistant system.
When the ignition switch is ON from the OFF state, the drive mode select switch starts in NORMAL mode regardless of drive mode during ignition switch ON.

The vehicle characteristics are controlled from the NORMAL mode to any mode listed below:

ECO	This mode support secological and economical driving by optimized power train characteristic.
TARMAC	This mode offers the pleasure of driving with agile dynamics on dry paved road, such as responsive and powerful acceleration, respon-siveand linear steeringfeel, stability and traceability on cornering.
GRAVEL	This mode is for driving on rough road surfaces such as flat unpavedroads or wet pavedroads and improves straightablity on roughroad and powerful launching acceleration. A part of ADAS function is limited.
SNOW	This mode is for driving on slippery roadsurfaces, such as snow-covered roads and offers good initial steering response and high corner-ing stabilityon a slipperyroad. A part of ADAS function is limited.

For relationship between drive mode and each control item, refer to the following table.

×: Change from NORMAL

Items	Drive mode				Control
Items	ECO	TARMAC	GRAVEL	SNOW	Control
Engine	×	×		×	Controls engine torque
Transmission		×			Select shift pattern
Combination meter	×	×	×	×	Displays the selected drive mode and mode as pup up
Steering		×			Controls mode and response of steering
ASC function			×	×	Controls braking force
AYC fubction		×	×	×	Controls AYC function
Driver assistance function			×	×	Controls ADAS function