Mitsubishi Montero (2004+). Manual - part 1093

M-ASTC DIAGNOSIS

TSB Revision

MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM

35C-83

STEP 12. Check the resistance in the CAN_L line. 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 resistor connector 

D-130, and measure the resistance between joint connector 
(9) and body ground.

(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 

terminal 4 and body ground.

• 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-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

AC204581

HARNESS SIDE: D-131

AN

TEST 
HARNESS

6

1

9 8

2

7

10

12 11

4

5

3

M-ASTC DIAGNOSIS

TSB Revision

MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM

35C-84

YES : Go to Step 13.
NO :  Repair the wiring harness wires between joint 

connector (9) and the resistor connector.

STEP 13. Check the resistance in the CAN_L line. 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 
between joint connector (9) and body ground.

(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 

terminal 5 and body ground.

• The resistance should be infinite.

AC204170

CONNECTOR: D-131

AT

6

1

9 8

2

7

10

12 11

4

5

3

AC204172

CONNECTOR: D-225

HARNESS SIDE

AD

3 2

1

4

5

AC204581

HARNESS SIDE: D-131

AO

TEST 
HARNESS

6

1

9 8

2

7

10

12 11

4

5

3

M-ASTC DIAGNOSIS

TSB Revision

MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM

35C-85

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?

YES : Go to Step 14.
NO :  Repair the wiring harness wires between joint 

connector (9) and the steering wheel sensor 
connector.

STEP 14. Check the resistance in the CAN_L line. 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 intermediate 

connector E-122, and measure the resistance between joint 
connector (9) and body ground.

(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.

AC204170

CONNECTOR: D-131

AT

6

1

9 8

2

7

10

12 11

4

5

3

AC204176

CONNECTOR: E-122

E-122(L)

E-122(L)

AD

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-86

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 

terminal 11 and body ground.

• 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?

YES : Retest the system.
NO :  Repair the wiring harness wires between joint 

connector (9) and the intermediate connector.

AC204581

HARNESS SIDE: D-131

AR

TEST 
HARNESS

6

1

9 8

2

7

10

12 11

4

5

3