Mitsubishi Montero (2004+). Manual — part 1111

M-ASTC DIAGNOSIS

TSB Revision

MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM

35C-155

STEP 24. Check for short circuit at the resistor. Check at
intermediate connector E-122.

CAUTION

Before checking CAN bus lines and their interconnected
components, "ground" yourself, by touching a metal
object such as an unpainted pipe, this will discharge any
potentially damaging static that may have built up.

CAUTION

When measuring resistance value or voltage in CAN bus
lines, use a digital multimeter. If not using a digital multim-
eter, the equipments, which are connected through the
CAN communication lines, may be damaged.
(1) Disconnect intermediate connector E-122 and steering

wheel sensor connector D-225, and measure the resistance
at the male intermediate connector (instrument panel wiring
harness side).

(2) Turn the ignition switch to the LOCK (OFF) position.

CAUTION

Disconnect the negative battery terminal when measuring
the resistance value in the CAN bus line. If you fail to do
so, the equipments, which are connected through the CAN
communication lines, may be damaged.
(3) Disconnect the negative battery terminal.

(4) Measure the resistance between intermediate connector

E-122 terminals 9 and 20.

• The resistance should measure 120 ± 12 ohms.

Q: Does the resistance measure 120

± 12 ohms?

YES : Go to Step 29.
NO : Go to Step 25.

AC204172

CONNECTOR: D-225

HARNESS SIDE

AD

3 2

1

4

5

AC204176

CONNECTOR: E-122

E-122(L)

MALE SIDE

E-122(L)

AF

1

12

2

13

3

14

4

15

5

16

6

17

7

18

8

19

9

20

10

21

11

22

AC204581

MALE CONNECTOR: E-122

TEST
HARNESS

AC

TEST
HARNESS

1

12

2

13

3

14

4

15

5

16

6

17

7

18

8

19

9

20

10

21

11

22

M-ASTC DIAGNOSIS

TSB Revision

MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM

35C-156

STEP 25. Check the CAN bus line for short circuit. Measure
at joint connector (9) D-131.

CAUTION

Before checking CAN bus lines and their interconnected
components, "ground" yourself, by touching a metal
object such as an unpainted pipe, this will discharge any
potentially damaging static that may have built up.

CAUTION

When measuring resistance value or voltage in CAN bus
lines, use a digital multimeter. If not using a digital multim-
eter, the equipments, which are connected through the
CAN communication lines, may be damaged.
(1) Disconnect joint connector (9) D-131, and measure the

resistance at joint connector (9).

(2) Turn the ignition switch to the LOCK (OFF) position.

CAUTION

Disconnect the negative battery terminal when measuring
the resistance value in the CAN bus line. If you fail to do
so, the equipments, which are connected through the CAN
communication lines, may be damaged.
(3) Disconnect the negative battery terminal.

CAUTION

Always use the test harness when measuring the voltage
or resistance value at the female connector. If you fail to do
so, connectors may be damaged.
(4) Measure the resistance between joint connector (9) D-131

terminals 7 and 12.

• The resistance should be infinite.

CAUTION

If you repair the CAN bus line of the instrument panel wir-
ing harness assembly (the wiring harness connected to
the steering wheel sensor, the data link connector and the
resistor) and the transmission wiring harness assembly
(the wiring harness connected to the G and yaw rate sen-
sor connector and intermediate connector E-123), observe
the precautions regarding how to repair wiring harness. If
a new wire is added or a splice point is modified for the
CAN_L or CAN_H line, an error in the CAN communication
may be caused.
Q: Is the resistance infinite?

AC204188

CONNECTORS: D-117, D-131

D-131

BF

HARNESS SIDE

HARNESS SIDE

D-131

D-117

D-117

6

1

9 8

2

7

10

12 11

4

5

3

21

26

22

27 2829 30

23

31

24

32

25

33

AC204738

HARNESS SIDE: D-131

TEST
HARNESS

EL

6

1

9 8

2

7

10

12 11

4

5

3

TEST
HARNESS

M-ASTC DIAGNOSIS

TSB Revision

MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM

35C-157

YES : Go to Step 26.
NO : Repair the wiring harness wires between joint

connector (9) and the data link connector.

STEP 26. Check the CAN bus line for short circuit. Measure
at joint connector (9) D-131.

CAUTION

Before checking CAN bus lines and their interconnected
components, "ground" yourself, by touching a metal
object such as an unpainted pipe, this will discharge any
potentially damaging static that may have built up.

CAUTION

When measuring resistance value or voltage in CAN bus
lines, use a digital multimeter. If not using a digital
multimeter, the equipments, which are connected through
the CAN communication lines, may be damaged.
(1) Disconnect joint connector (9) D-131 and resistor connector

D-130, and measure the resistance at joint connector (9).

(2) Turn the ignition switch to the LOCK (OFF) position.

CAUTION

Disconnect the negative battery terminal when measuring
the resistance value in the CAN bus line. If you fail to do
so, the equipments, which are connected through the CAN
communication lines, may be damaged.
(3) Disconnect the negative battery terminal.

CAUTION

Always use the test harness when measuring the voltage
or resistance value at the female connector. If you fail to do
so, connectors may be damaged.
(4) Measure the resistance between joint connector (9) D-131

terminals 1 and 4.

• The resistance should be infinite.

CAUTION

If you repair the CAN bus line of the instrument panel wir-
ing harness assembly (the wiring harness connected to
the steering wheel sensor, the data link connector and the
resistor) and the transmission wiring harness assembly
(the wiring harness connected to the G and yaw rate sen-
sor connector and intermediate connector E-123), observe
the precautions regarding how to repair wiring harness. If
a new wire is added or a splice point is modified for the

AC204188

CONNECTORS: D-130, D-131

D-131

AQ

HARNESS SIDE

HARNESS SIDE

D-131

D-130

D-130

6

1

9 8

2

7

10

12 11

4

5

3

1
2

AC204738

HARNESS SIDE: D-131

TEST
HARNESS

EO

6

1

9 8

2

7

10

12 11

4

5

3

TEST
HARNESS

M-ASTC DIAGNOSIS

TSB Revision

MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM

35C-158

CAN_L or CAN_H line, an error in the CAN communication
may be caused.
Q: Is the resistance infinite?

YES : Go to Step 27.
NO : Repair the wiring harness wires between joint

connector (9) and the resistor connector.

STEP 27. Check the CAN bus line for short circuit. Measure
at joint connector (9) D-131.

CAUTION

Before checking CAN bus lines and their interconnected
components, "ground" yourself, by touching a metal
object such as an unpainted pipe, this will discharge any
potentially damaging static that may have built up.

CAUTION

When measuring resistance value or voltage in CAN bus
lines, use a digital multimeter. If not using a digital
multimeter, the equipments, which are connected through
the CAN communication lines, may be damaged.
(1) Disconnect joint connector (9) D-131 and steering wheel

sensor connector D-225, and measure the resistance at
joint connector (9).

(2) Turn the ignition switch to the LOCK (OFF) position.

CAUTION

Disconnect the negative battery terminal when measuring
the resistance value in the CAN bus line. If you fail to do
so, the equipments, which are connected through the CAN
communication lines, may be damaged.
(3) Disconnect the negative battery terminal.

CAUTION

Always use the test harness when measuring the voltage
or resistance value at the female connector. If you fail to do
so, connectors may be damaged.
(4) Measure the resistance between joint connector (9) D-131

terminals 2 and 5.

• The resistance should be infinite.

AC204188

CONNECTORS: D-130, D-131

D-131

AQ

HARNESS SIDE

HARNESS SIDE

D-131

D-130

D-130

6

1

9 8

2

7

10

12 11

4

5

3

1
2

AC204738

HARNESS SIDE: D-131

TEST
HARNESS

EM

6

1

9 8

2

7

10

12 11

4

5

3

TEST
HARNESS