Mitsubishi MOTORS Outlander 2007, Service Manual, Technical Information & Body Repair Manual Data

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State ASC operation indicator light ASC OFF indicator light
OFF (When the actuator is
operating)*2 OFF (When the actuator is
operating)*2
016'
*1After the actuator is operated, the light stays
illuminated until the ignition switch is turned to the
"LOCK" (OFF) position.
*2The ABS warning light flashes (2 Hz) while the
actuator is operating.
ASC-ECU
M23506100005USA0000010000
This ECU incorporates the ABS function, EBD
function, Skid control function, and Traction control
function.
SYSTEM CONFIGURATION
The hydraulic units of the ASC employ the automatic
pressurization
function. ASC systems also
incorporate G and yaw rate sensor, steering wheel
sensor, and master cylinder pressure sensor
(integrated with hydraulic unit).
CONTROL DESCRIPTION
ASC-ECU detects vehicle movement based on
information from various sensors and calculates a
model of ideal vehicle movement. ASC-ECU
compares the actual vehicle movement with the ideal
vehicle model, and manages the brake of the specific
wheel so that the actual vehicle movement gets close
to the ideal vehicle mode. It also controls the plowing
out or spinning out condition by creating the yaw
moment in the vehicle.
Example of Active Skid Control operation
ZC600705
<Generation of rotating force> <Generation of counter-rotating force>
0000
Large braking
force
Large braking
force
The Skid Control manages the vehicle attitude by
creating a yaw moment from altering the balance
between the cornering force and each wheel's braking
mechanism.
For example, on a slippery surface, if the vehicle tends
to be plowing out contrary to the driver’s intention, a
yaw moment (a rotational moment) is created to restrain the plowing out by increasing the rear-inside
braking force. On the other hand, when the vehicle
tends to be spinning out, a yaw moment (a restorative
moment) is created to restrain the spinning out by
increasing the front-outside wheel braking force.
Furthermore, when it is determined that the vehicle is
spinning out, safe and stable cornering is enabled by
deceleration from reducing the engine output.
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