Mitsubishi Montero (2002-2004). Manual — part 1136

M-ASTC DIAGNOSIS

TSB Revision

MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM

35C-161

STEP 34. Replace the G and yaw rate sensor.
After the G and yaw rate sensor is replaced, retest the system.
Q: Has the trouble symptom been eliminated?

YES (the trouble symptom has been eliminated) : The

procedure is complete.

NO (the trouble symptom has not been eliminated) :

Replace the power control module.

M-ASTC DIAGNOSIS

TSB Revision

MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM

35C-162

STEP 35. Check intermediate connectors E-122, E-123,
joint connector (9) D-131, data link connector D-117,
resistor connector D-130, power control module connector
D-134, steering wheel sensor connector D-225, M-ASTC-
ECU E-121 and G and yaw rate sensor connector E-126.

AC204188

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

D-131

BG

HARNESS SIDE

HARNESS SIDE

D-131

D-130

D-130

6

1

9 8

2

7

10

12 11

4

5

3

1
2

HARNESS SIDE

D-117

D-117

21

26

22

27 2829 30

23

31

24

32

25

33

AC204171

CONNECTOR: D-134

HARNESS SIDE

D-134(GR)

D-134(GR)

AE

80

87

73

66

67

65
74

81

75

82

6261

72

68

69

70

71

78

85

77

8483

76

79

86

63

64

8988

AC204172

CONNECTOR: D-225

HARNESS SIDE

AD

3 2

1

4

5

M-ASTC DIAGNOSIS

TSB Revision

MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM

35C-163

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.

CAUTION

If there is a problem in the CAN bus line or the connectors
on the control wiring harness assembly (the wiring har-
ness connected to the M-ASTC-ECU, the power control
module and intermediate connector E-123), do not attempt
to repair the wiring harness or connector(s), but replace
the wiring harness assembly. If a wire is added or the con-
nector(s) are repaired, an error in the CAN communication
may be caused.

AC204194

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

E-123(GR)

E-123(GR)

E-122(L)

E-121

HARNESS SIDE

AK

E-121

E-122(L)

2

6

14

7

9 8

10

4

12

3

11

19

16

1817

15

1

5

13

1

12

2

13

3

14

4

15

5

16

6

17

7

18

8

19

9

20

10

21

11

22

71

77

83

72

78

84

73

79

85

74

80

75

81

86

76

82

87

AC204175

CONNECTOR: E-126

HARNESS SIDE

E-126(GR)

E-126(GR)

AB

FLOOR
CONSOLE

1

2

4 3

AC203824

CONNECTOR

TWISTED WIRE

AB

10 cm
(4.0 inches)

M-ASTC DIAGNOSIS

TSB Revision

MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM

35C-164

Q: Are intermediate connectors E-122, E-123, joint

connector (9) D-131, data link connector D-117, resistor
connector D-130, power control module connector D-
134, steering wheel sensor connector D-225, M-ASTC-
ECU E-121 and G and yaw rate sensor connector E-126
in good condition?
YES : Retest the system.
NO : Repair or replace the connector(s).

Diagnostic Item 5: CAN bus line diagnostics (between the main bus line and the power control
module)

CAUTION

Prior to this diagnosis procedure, diagnose the
CAN main bus line.

CAUTION

If there is a problem in the CAN bus line or the
connectors on the control wiring harness assem-
bly (the wiring harness connected to the M-
ASTC-ECU, the power control module and inter-
mediate connector E-123), do not attempt to
repair the wiring harness or connector(s), but
replace the wiring harness assembly. If a wire is
added or the connector(s) are repaired, an error
in the CAN communication may be caused.
This procedure diagnoses the shaded portion below.

AC203825AE

PROBABLE
TROUBLE
SPOT

G AND
YAW RATE
SENSOR

POWER TRAIN
CONTROL
MODULE

M-ASTC-ECU

STEERING
WHEEL
SENSOR

DATA LINK
CONNECTOR

RESISTOR