Mazda 6 MPS 2005 Training Manual Supplement page 107

Normal Control
•
When starting off or accelerating during straight-ahead driving, torque transmitted to the
rear wheels is optimally controlled to ensure sufficient acceleration performance. Due to
this, standing-start and acceleration performance is improved.
•
Also, in order to improve fuel economy when driving at a stable, consistent speed, torque
transmitted to the rear wheels is damped.
Tight Cornering Control
•
When the 4WD CM determines, based on the four-wheel speed and steering wheel
angle information, that the vehicle is in tight cornering, it reduces the torque transmitted
to the rear wheels.
Integrated DSC Control
•
If a signal from the DSC HU/CM input to the 4WD CM indicates that ABS (Antilock Brake
System) control is activated, the module controls the torque transmitted to the rear
wheels to prevent undue influence on ABS control.
•
Also, when a coupling torque request signal is received from the DSC HU/CM, the
module controls the torque transmitted to the rear wheels to match the amount of
requested torque.
•
Torque can also be transmitted to the rear wheels in order to distribute engine braking
force to all the wheels to achieve better driving stability when decelerating.
Other Control
•
In case the rear differential oil temperature exceeds the specified amount, or when there
is an unusually large variation in the rotation speed of the front and rear wheels (ex.
when trying to get unstuck), control is temporarily suspended in order to protect the 4WD
system. When this occurs the 4WD warning light flashes to indicate the situation to the
driver.
•
The software inside the 4WD control module can recognize the driver´s input and wheel
slip condition. Accordingly, it automatically selects an appropriate control map to facilitate
normal, sport or snow 4WD control.
Service Training Mazda6 MPS Supplement
Driveline/Axle
03-27