Mitsubishi Montero (2002-2004). Manual - part 1119

M-ASTC DIAGNOSIS

TSB Revision

MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM

35C-93

This procedure diagnoses the shaded portion below.

AC203825AJ

CHECK POINT

G AND 
YAW RATE
SENSOR

POWER TRAIN
CONTROL 
MODULE

M-ASTC-ECU

STEERING 
WHEEL 
SENSOR

DATA LINK
CONNECTOR

RESISTOR

CAN_H

M-ASTC DIAGNOSIS

TSB Revision

MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM

35C-94

AC204606

Can Bus Communication Circuit

AC204170

CONNECTORS: D-117, D-130, D-131

BU

D-117

D-130

D-131

AC204171

CONNECTOR: D-134

AK

D-134(GR)

M-ASTC DIAGNOSIS

TSB Revision

MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM

35C-95

AC204172

CONNECTOR: D-225

AH

AC204176

CONNECTORS: E-121, E-122, E-123

AQ

E-123(GR)

E-122(L)

E-121

AC204175

CONNECTOR: E-126

AD

E-126(GR)

FLOOR 
CONSOLE

M-ASTC DIAGNOSIS

TSB Revision

MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM

35C-96

DIAGNOSIS 

Required Special Tools:

• MB991223: Harness Set

STEP 1. Check joint connector (9) D-131.

CAUTION

If there is a problem in the connector(s) (including termi-
nals) or wire(s) of the instrument panel wiring 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 har-
ness connected to the G and yaw rate sensor connector 
and intermediate connector E-123), cut and repair the 
defective wire so that the frayed end of the twisted wire 
should be within 10 cm (4.0 inches). If it exceeds 10 cm (4.0 
inches), twist the wiring harness just like the original 
twisted wire. If the frayed end exceeds 10 cm (4.0 inches), 
a communication error may be caused.
Q: Is joint connector D-131 in good condition?

YES : Go to Step 2.
NO :  Repair or replace the connector(s).

AC204170

CONNECTOR: D-131

AT

6

1

9 8

2

7

10

12 11

4

5

3

AC203824

CONNECTOR

TWISTED WIRE

AB

10 cm
 (4.0 inches)