Mitsubishi Montero (2004+). Manual — part 1101
M-ASTC DIAGNOSIS
TSB Revision
MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM
35C-115
STEP 14. Check the resistance in the CAN_H 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 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.
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 6 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?
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
AC204581
HARNESS SIDE: D-131
AP
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-116
YES : Retest the system.
NO : Repair the wiring harness wires between joint
connector (9) and the intermediate connector.
STEP 15. Measure the voltage in the CAN_H line. 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
multimeter, the equipments, which are connected through
the CAN communication lines, may be damaged.
(1) Disconnect intermediate connectors E-122, E-123, and
M-ASTC-ECU connector E-121, power control module
connector D-134, and measure the voltage at the female
intermediate connector (control panel wiring harness side).
(2) Turn the ignition switch to the "ON" position.
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
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
M-ASTC DIAGNOSIS
TSB Revision
MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM
35C-117
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.
(3) Measure the voltage between intermediate connector
E-122 terminal 9 and body ground.
• The voltage should measure one volt or less.
Q: Do the voltage measure one volt or less?
YES : Go to Step 16.
NO : Replace the control wiring harness assembly.
AC204580
FEMALE CONNECTOR: E-122
AD
11
22
10
21
9
20
8
19
7
18
6
17
5
16
4
15
3
14
2
13
1
12
TEST
HARNESS
M-ASTC DIAGNOSIS
TSB Revision
MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM
35C-118
STEP 16. Check the resistance in the CAN_H line. 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 connectors E-122, E-123, and
M-ASTC-ECU connector E-121, power control module
connector D-134, and measure the resistance at the female
intermediate connector (control 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.
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
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
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