Mitsubishi Outlander XL. Manual - part 693

 

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Mitsubishi Outlander XL. Manual - part 693

 

 

STEP 4. Voltage measurement at the A-02 ASC-ECU
connector

ZC601293 0010

ASC-ECU

MB991997

Check harness

A-02 ASC-ECU 
harness connector

(1)

Disconnect the connector, connect special tool MB991997 to
the harness-side connector, and measure the voltage at the
special tool connector side.

NOTE: 

Do not connect the special tool MB991997 to ASC-

ECU.

(2)

Turn the ignition switch to the ON position.

(3)

Voltage between the terminal No. 1 and the body ground

OK: 12 volts (Battery voltage)

Q:Is the check result normal?

YES:

 Go to Step 7.

NO:

 Go to Step 5.

STEP 5. Connector check: A-02 ASC-ECU connector

Q:Is the check result normal?

YES:

 Repair the wiring harness between the fusible link

No. 26 and the A-02 ASC-ECU connector terminal No. 1.

NO:

 Repair the defective connector.

STEP 6. Connector check: A-02 ASC-ECU connector, C-33
intermediate connector, C-317 junction block connector,
C-210 ignition switch connector

Q:Is the check result normal?

YES:

 The open or short circuit may be present in the

power supply circuit. Repair the wiring harness between
the A-02 ASC-ECU connector terminal No. 4 and the C-210
ignition switch connector.

NO:

 Repair the defective connector.

STEP 7. Wiring harness check between the A-02 ASC-ECU
connector terminal No. 16/47 and the body ground

Check the ground wires for open circuit.

Q:Is the check result normal?

YES:

 Go to Step 8.

NO:

 Repair the wiring harness.

STEP 8. Battery check
Refer to GROUP 54Aa - Battery Test P.54Aa-2.

Q:Is the battery in good condition?

YES:

 Go to Step 9.

NO:

 Charge or replace the battery.

ACTIVE SKID CONTROL SYSTEM (ASC)

35C-179

DIAGNOSIS

STEP 9. Charging system check
Refer to GROUP 16a - Charging System P.16a-8.

Q:Is the charging system in good condition?

YES:

 Go to Step 10.

NO:

 Repair or replace the charging system component(s).

STEP 10. Retest the system.

Q:Is the communication with scan tool possible?

YES:

 An intermittent malfunction may be present. (Refer

to GROUP 00 - How to Cope with Intermittent
Malfunction P.00-15.)

NO:

 Make sure that the M.U.T.-III cable is properly

connected and the V.C.I. switch is ON, and then replace
ASC-ECU.

DATA LIST REFERENCE TABLE

M13506100097USA0000010000

The following items can be read by the scan tool from
the ASC-ECU input data.

The  following  items  of  ECU  input  data  can  be  read
using scan tool.

 
1.

The system is normal.

Item No.

Check item

Check conditions

Normal conditions

01

FL wheel speed sensor

Perform a test run of the vehicle. The speedometer display and

the  scan  tool  display  almost
agree with each other.

02

FR wheel speed sensor

03

RL wheel speed sensor

04

RR wheel speed sensor

05

Power supply voltage

10 to 18 V

07

Brake switch (input)

OFF
ON
Undefined
-

08

Lateral  G  sensor  (+:  left
turn, -: right turn)

Vehicle stopped (level)

-0.11 to 0.11 G

Running

-1 to 1 G

09

G

 sensor

 (+:

deceleration,

 -:

acceleration)

Vehicle stopped (level)

-0.11 to 0.11 G

Running

-1 to 1 G

10

Master cylinder pressure
(+:  pressure  increase,  -:
pressure decrease)

The brake pedal is depressed.

Increases by the amount of the
brake pedal depression.

The brake pedal is released.

-3 to 3 bar

11

Steering  angle  (+:  left
turn, -: right turn)

Vehicle stopped (level)

-6 to 6 deg

Running

-720  to  720  deg.  (ASC-ECU
normal detection value)
-850  to  850  deg.  (Sensor
normal value as a single unit)

12

Yaw  rate  sensor  (+:  left
turn, -: right turn)

Vehicle stopped (level)

-3.6 to 3.6 deg/s

35C-180

ACTIVE SKID CONTROL SYSTEM (ASC)

DIAGNOSIS

Item No.

Check item

Check conditions

Normal conditions

Running

-100 to 100 deg/s

14

Brake  switch  (Stop  light
switch)

The brake pedal is depressed.

ON

The brake pedal is released.

OFF

15

Emission test mode

OFF
ON

26

Brake  fluid  pressure
switch

Brake fluid level is lower than the
"LOWER" marking.

Low

Brake fluid level is higher than the
"LOWER" marking.

Normal

Brake fluid level switch connector
is not connected.

Not connected

28

ASC/TCL  OFF  switch
(ASC OFF switch)

ASC  is  turned  ON  by  the  ASC
OFF switch.

ON

ASC  is  turned  OFF  by  the  ASC
OFF switch.

OFF

45

SAS  OK  flag  (Steering
wheel  sensor  neutral
point learned)

The neutral point learning of the
steering

 wheel

 sensor

 is

completed.

Comp

The neutral point learning of the
steering  wheel  sensor  (ASC-
ECU side) is not completed.

Not Comp (ASC)

The neutral point learning of the
steering  wheel  sensor  (steering
wheel  sensor  side)  is  not
completed.

Not Comp (SAS)

The neutral point learning of the
steering  wheel  sensor  (ASC-
ECU  side  and  steering  wheel
sensor side) is not completed.

Not Comp

65

Engine speed

When  the  accelerator  pedal  is
depressed (engine started)

The  tachometer  display  and
the  scan  tool  display  almost
agree with each other.

66

Engine torque

Increases by the amount of the
brake pedal depression.

67

TP sensor (TPS)

68

Allow ESP torque request

Not allowed
Allow

69

Allow ESP torque request
(engine)

Not allowed
Allow

70

Target gear

Shift position; "N" range

N

Shift position; "D" range

D

Shift position; "R" range

R

Shift position; "P" range

P

Shift position; "-" range

-

ACTIVE SKID CONTROL SYSTEM (ASC)

35C-181

DIAGNOSIS

Item No.

Check item

Check conditions

Normal conditions

71

Actual gear

Shift position; "N" range

N

Shift position; "D" range

D

Shift position; "R" range

R

Shift position; "P" range

P

Shift position; "-" range

-

72

Master cylinder pressure
offset

73

Lateral G sensor offset

86

Ignition switch

Ignition switch is "ON" position

ON

Ignition  switch  is  "LOCK  (OFF)"
position

OFF

87

Ignition switch (input)

Ignition  switch  is  "LOCK  (OFF)"
position

Lock

Ignition  switch  is  "LOCK  (OFF)"
position

OFF

Ignition switch is "ACC" position ACC2
Ignition switch is "ACC" position ACC
Ignition switch is "ON" position

ON

Ignition  switch  is  "START"
position

Start

Ignition switch is "-" position

-

88

Vehicle speed

Perform a test run of the vehicle. The speedometer display and

the  scan  tool  display  almost
agree with each other.

91

Brake pressure sensor

The brake pedal is depressed.

ON

The brake pedal is released.

OFF

97

Yaw rate sensor offset

96

G sensor offset

105

Power supply voltage (input)

10 to 18 V

120

Parking  brake  switch
(Input)

When the parking brake lever is
pulled up:

ON

When the parking brake lever is
released:

OFF

128

A.S.C./TCL  off  switch
(input)

When  the  ASC  OFF  switch  is
pressed.

ON

When the ASC OFF switch is not
pressed.

OFF

2.

System shutdown by ECU

While  ASC-ECU  is  disabled  by  the  diagnostic
function,  the  scan  tool  displayed  data  is  different
from the actual measurement.

35C-182

ACTIVE SKID CONTROL SYSTEM (ASC)

DIAGNOSIS

 

 

 

 

 

 

 

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