Mitsubishi Montero (2004+). Manual — part 1113
M-ASTC DIAGNOSIS
TSB Revision
MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM
35C-163
STEP 31. Check for short circuit at the M-ASTC-ECU.
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
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
AC204176
CONNECTOR: E-122
E-122(L)
FEMALE SIDE
E-122(L)
AG
11
22
10
21
9
20
8
19
7
18
6
17
5
16
4
15
3
14
2
13
1
12
AC204176
CONNECTOR: E-123
AR
E-123(GR)
2
6
14
7
9 8
10
4
12
3
11
19
16
1817
15
1
5
13
E-123(GR)
M-ASTC DIAGNOSIS
TSB Revision
MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM
35C-164
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 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 32.
NO : Replace the control wiring harness assembly.
AC204581
FEMALE CONNECTOR: E-122
TEST
HARNESS
AD
TEST
HARNESS
11
22
10
21
9
20
8
19
7
18
6
17
5
16
4
15
3
14
2
13
1
12
M-ASTC DIAGNOSIS
TSB Revision
MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM
35C-165
STEP 32. Check power control module connector D-134, G
and yaw rate sensor connector E-126 and intermediate
connector E-123.
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.
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
AC204176
CONNECTOR: E-123
AR
E-123(GR)
2
6
14
7
9 8
10
4
12
3
11
19
16
1817
15
1
5
13
E-123(GR)
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-166
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.
Q: Are power control module connector D-134, G and yaw
rate sensor connector E-126 and intermediate
connector E-123 in good condition?
YES : Go to Step 33.
NO (If there is a problem at the transmission wiring
harness assembly side) : Repair or replace the connector.
NO (If there is a problem at the control wiring harness
assembly side) : Replace the control wiring harness
assembly.
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