Mitsubishi Outlander GS45X. Manual — part 395

DIAGNOSIS

TSB Revision

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-7

CAUTION

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Select "System Select."
4. Select "ABS/ASC/ASTC" from the system list, and select the

"OK" button.

5. Choose "Actuator Test" from "ABS" screen.
6. Choose an appropriate item and select the "OK" button.

HOW TO DIAGNOSE THE CAN BUS LINE

Required Special Tools:

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A

CAUTION

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Select "CAN bus diagnosis" from the start-up screen.
4. When the vehicle information is displayed, confirm that it

matches the vehicle whose CAN bus lines will be
diagnosed.

• If they match, go to step 8.

• If not, go to step 5.

5. Select "view vehicle information" button.
6. When the vehicle information is displayed, confirm again

that it matches the vehicle which is being diagnosed.

• If they match, go to step 8.

• If not, go to step 5.

7. Press the "OK" button.
8. When the options are displayed, choose the options (mark

the check) and then select "OK".

ZC501967

AC404789

AC701411AB

MB991824

MB991827

MB991910

Data link
connector

ZC501967

AC404789

AC701411AB

MB991824

MB991827

MB991910

Data link
connector

DIAGNOSIS

TSB Revision

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-8

DIAGNOSTIC FUNCTION

M1355001000783

ASC-ECU has the following functions for easier sys-
tem checks. All the following items can be diagnosed
using the scan tool.

• DTC set (Refer to

P.35C-18

).

• Service data output (Refer to

P.35C-270

).

• Actuator test (Refer to

P.35C-273

).

• Freeze frame data output (Refer to

P.35C-8

).

CHECK OF FREEZE FRAME DATA

The freeze frame data can be checked by using the
scan tool.

.

When detecting fault and storing the DTC, the ECU
connected to CAN bus line obtains the data before
the determination of the DTC and the data when the
DTC is determined, and then stores the ECU status
of that time. By analyzing each data from scan tool,
the troubleshooting can be performed more effi-
ciently. The displayed items are as the table below.

Display item list

Item No.

Item name

Content

Unit

1

Odometer

Total driving distance after the DTC is generated

mile

2

Ignition cycle

Number of times the ignition switch is turned "ON" or
"LOCK" (OFF) after the past failure transition

Number of
counts is
displayed.

4

Accumulated minute Cumulative time for current malfunction of DTC

min

5

Power supply
voltage

Voltage of power supply when the DTC is generated V

8

Lateral G sensor

Lateral G of G and yaw rate sensor when the DTC is
generated

G

9

G sensor

Longitudinal G of G and yaw rate sensor when the
DTC is generated

G

10

Master cylinder
pressure

Master cylinder pressure of Master cylinder pressure
sensor when the DTC is generated

bar

11

Steering angle

Steering angle of steering wheel sensor when the
DTC is generated

deg

12

Yaw rate sensor

Yaw rate of G and yaw rate sensor when the DTC is
generated

deg/s

13

Stop light switch

Stop light switch condition when the DTC is
generated :OFF/ON

−

21

Pump motor

Pump motor condition when the DTC is generated
:OFF/ON

−

28

ASC/TCL off switch

ASC OFF switch condition when the DTC is
generated :OFF/ON

−

301

ABS control

ABS control when the DTC is generated :OFF/ON

−

302

Brake TCL control

Traction control (brake control) when the DTC is
generated :OFF/ON

−

303

Engine TCL control

Traction control (engine control) when the DTC is
generated :OFF/ON

−

304

ASC control

ASC control when the DTC is generated :OFF/ON

−

305

Brake TCL operation Traction control (brake control) operation when the

DTC is generated: Permission/Prohibition

−

DIAGNOSIS

TSB Revision

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-9

FAIL-SAFE FUNCTIONS

ASC-ECU constantly monitors the input and output
signals. If an error is detected in the system,
ASC-ECU sends a fail signal and the corresponding
indicator light is illuminated or blinks. Various con-
trols are processed depending on the cause of mal-
function as shown below.

.

Illumination condition of warning light and display in case of failure

401

FL wheel speed
sensor

Wheel speed (FL) when the DTC is generated

mph

402

FR wheel speed
sensor

Wheel speed (FR) when the DTC is generated

mph

403

RL wheel speed
sensor

Wheel speed (RL) when the DTC is generated

mph

404

RR wheel speed
sensor

Wheel speed (RR) when the DTC is generated

mph

Item No.

Item name

Content

Unit

Diagnostic
trouble
code No.

Item

Brake
warning
light,

brake
warning
display

ABS warning
light,

ABS warning
display

ASC warning
light,

ASC warning
display

ASC OFF
display

C100A

Abnormality in FL wheel speed
sensor circuit

OFF

*1

ON

*2

ON

ON

C1015

Abnormality in FR wheel speed
sensor circuit

C1020

Abnormality in RL wheel speed
sensor circuit

C102B

Abnormality in RR wheel speed
sensor circuit

C1011

Abnormality in FL wheel speed
sensor signal

OFF

*1

ON

*2

ON

ON

C101C

Abnormality in FR wheel speed
sensor signal

C1027

Abnormality in RL wheel speed
sensor signal

C1032

Abnormality in RR wheel speed
sensor signal

DIAGNOSIS

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ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-10

C1014

Mutual monitoring of FL wheel
speed sensor

OFF

*1

ON

*2

ON

ON

C101F

Mutual monitoring of FR wheel
speed sensor

C102A

Mutual monitoring of RL wheel
speed sensor

C1035

Mutual monitoring of RR wheel
speed sensor

C1041

Abnormality in periodical signal
for FL wheel speed sensor

OFF

*1

ON

*2

ON

ON

C1042

Abnormality in periodical signal
for FR wheel speed sensor

C1043

Abnormality in periodical signal
for RL wheel speed sensor

C1044

Abnormality in periodical signal
for RR wheel speed sensor

C1046

FL wheel speed sensor control
phase time exceeded

OFF

*1

ON

*2

ON

ON

C1047

FR wheel speed sensor control
phase time exceeded

C1048

RL wheel speed sensor control
phase time exceeded

C1049

RR wheel speed sensor control
phase time exceeded

C104B

Abnormality in FL wheel inlet
valve system

ON

ON

ON

ON

C104F

Abnormality in FR wheel inlet
valve system

C1053

Abnormality in RL wheel inlet
valve system

C1057

Abnormality in RR wheel inlet
valve system

C105F

Abnormality in FL wheel outlet
valve system

ON

ON

ON

ON

C1063

Abnormality in FR wheel outlet
valve system

C1067

Abnormality in RL wheel outlet
valve system

C105B

Abnormality in RR wheel outlet
valve system

Diagnostic
trouble
code No.

Item

Brake
warning
light,

brake
warning
display

ABS warning
light,

ABS warning
display

ASC warning
light,

ASC warning
display

ASC OFF
display