Mitsubishi Outlander XL. Manual — part 1291

DTC

Item

Brake
warning light

ABS warning
light

ASC

ON

indicator light

ASC

OFF

indicator light

Abnormality in
lateral

G-

sensor output
voltage

OFF

OFF

ON

ON

Abnormality in
yaw rate sensor
output voltage

OFF

OFF

ON

ON

Abnormality in
G and yaw rate
sensor supply
voltage

OFF

｠

OFF (FWD)

｠

ON (AWD)

ON

ON

C2111 Sensor power

supply circuit

Low input

OFF

ON

ON

ON

C2112 Sensor power

supply circuit

High input

OFF

ON

ON

ON

C2114 Abnormality in

G and yaw rate
sensor
operation
voltage

Low

voltage

(6.5 ± 0.5 V or
less)

OFF

｠

OFF (FWD)

｠

ON (AWD)

ON

ON

C2115 Abnormality in

G and yaw rate
sensor
operation
voltage

High

voltage

(18.0 ± 1.0 V or
more)

OFF

｠

OFF (FWD)

｠

ON (AWD)

ON

ON

C123A Abnormality

in

sensor

calibration

OFF

ON

ON

ON

C1219 Abnormality in steering wheel

sensor signal

OFF

OFF

ON

ON

C121A Steering wheel sensor neutral

point not learned

OFF

Flashing (2 Hz) OFF

OFF

C2205 Internal abnormality in steering

wheel sensor

OFF

OFF

ON

ON

C1608 Implausible diagnosis data

OFF

OFF

OFF

OFF

U0001 Bus-off

OFF

OFF

OFF

OFF

U0100 Engine time-out error

OFF

OFF

OFF

OFF

U0101 A/T time-out error

OFF

OFF

OFF

OFF

U0114
*4

AWD-ECU time-out error

OFF

OFF

OFF

OFF

U0126 Steering wheel sensor time-out

error

OFF

OFF

OFF

OFF

U0141 ETACS time-out error

OFF

OFF

OFF

OFF

U0125 G and yaw rate sensor message

time-out error/message error

OFF

｠

OFF (FWD)

｠

ON (AWD)

ON

ON

35C-18

ACTIVE STABILITY CONTROL SYSTEM (ASC)

CONSTRUCTION DESCRIPTION

DTC

Item

Brake
warning light

ABS warning
light

ASC

ON

indicator light

ASC

OFF

indicator light

U0401 Engine malfunction detected

OFF

OFF

ON

ON

U0428 Steering wheel sensor CRC,

message error

OFF

OFF

ON

ON

U1003 G and yaw rate sensor bus-off

OFF

｠

OFF (FWD)

｠

ON (AWD)

ON

ON

U1415 Variant coding not completed

OFF

ON

ON

ON

U1417 Variant coding value invalid

(includes faulty installation)

OFF

ON

ON

ON

NOTE:

｠

*1: Turns on when two or more wheels are faulty.

｠

*2: Stays on until the vehicle speed reaches 10 km/
h when the ignition switch is turned to ON next time.

｠

*3: This diagnostic trouble code is not set with the
vehicle speed of 20 km/h or less.

｠

*4: AWD only

DIAGNOSTIC TROUBLE CODE READING
METHOD
There are 70 diagnosis items (FWD) or 73 diagnosis
items (AWD). The diagnostic trouble code can be
checked using the M.U.T.-III scan tool.

HOW TO ERASE DIAGNOSTIC TROUBLE CODE
MEMORY
Diagnostic trouble code can be erased using the
M.U.T.-III scan tool.

Data list output
The following items input to ASC-ECU can be read
using scan tool.

NOTE:

For service data items, refer to Workshop

Manual.

ACTUATOR TEST
Using the M.U.T.-III scan tool, the actuators can be
forcibly operated. The M.U.T.-III scan tool can also
bleed the active stability control system.
When ASC-ECU is disabled, the actuator test cannot
be performed.

NOTE:

｠

Scan tool uses the ABS data list.

｠

For the actuator test specification, refer to
Workshop Manual.

CALIBRATION
After the G and yaw rate sensor and steering wheel
sensor have been replaced with new ones, calibration
must be performed using the M.U.T.-III scan tool*.

NOTE:

｠

The M.U.T.-III scan tool uses the ABS data list.

｠

*: For calibration, refer to Workshop Manual.

DESCRIPTION OF CONSTRUCTION AND OPERATION

M23506100006USA0000010000

ACTIVE SKID CONTROL OPERATION

ASC-ECU receives various kinds of information from
the engine ECU, AWD-ECU, ETACS-ECU, A/T-ECU,
steering wheel sensor, G and yaw rate sensor, and
wheel speed sensor. When ECU determines the
vehicle runs in the spinning out or plowing out
direction based on the signal sent from these sensors,
ASC-ECU drives each valve and pump motor and
controls the braking force to be applied to the wheels.

When the system increases the fluid pressure
automatically, it closes the cut valve to shut off the
pressure line to the suction valve, and drives the pump
motor. For example, when the vehicle runs in the
plowing out direction while turning to the right, ASC-
ECU supplies the brake fluid from the pump to the
front left wheel to apply the braking force on it.

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-19

DESCRIPTION OF CONSTRUCTION AND OPERATION

ASC-ECU, the engine ECU, and AWD-ECU
communicate with each other via CAN. When the
accelerator pedal is depressed too far, the signal

requesting the engine output reduction is sent to the
engine ECU. Depending on the situation, AWD control
amount limitation signal is sent to the ASC-ECU to
secure the ASC controllability.

When brake fluid pressure decreases during normal braking and ABS operation

ZC600007

Master cylinder

0000

Wheel
cylinder

Low pressure
accumulator

Pump

Hydraulic unit

Motor

Wheel
cylinder

Suction damper

Outlet valve

Inlet valve

Outlet valve

Inlet valve
(with switched orifice)

Suction valve

Cut
valve

Pressure sensor

Brake fluid flow

Brake fluid flow

Brake fluid flow

Damping
chamber

Pressure relief valve

The brake fluid supplied from the wheel cylinder is
stored in the low pressure accumulator. Then, the

stored brake fluid is returned to the master cylinder by
driving the pump using the motor.

VALVE CONDITION

Item

Power status

Open/Close

Cut valve

OFF

Open

Suction valve

OFF

Closed

Inlet valve

ON

Closed

Outlet valve

ON

Open

35C-20

ACTIVE STABILITY CONTROL SYSTEM (ASC)

DESCRIPTION OF CONSTRUCTION AND OPERATION

When brake fluid pressure is held by ABS

ZC600008

Master cylinder

0000

Wheel
cylinder

Low pressure
accumulator

Pump

Hydraulic unit

Motor

Wheel
cylinder

Suction damper

Outlet valve

Inlet valve

Outlet valve

Inlet valve
(with switched orifice)

Suction valve

Cut
valve

Pressure sensor

Brake fluid flow

Brake fluid flow

Brake fluid
flow

Brake fluid
flow

Pressure relief valve

Damping
chamber

The system closes the inlet valve and outlet valve to
hold the brake fluid pressure in the wheel cylinder. If

the brake fluid is stored in the low pressure
accumulator, the brake fluid is returned to the master
cylinder by driving the pump using the motor.

VALVE CONDITION

Item

Power status

Open/Close

Cut valve

OFF

Open

Suction valve

OFF

Closed

Inlet valve

ON

Closed

Outlet valve

OFF

Closed

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-21

DESCRIPTION OF CONSTRUCTION AND OPERATION