Mitsubishi Montero (2004+). Manual — part 1105
M-ASTC DIAGNOSIS
TSB Revision
MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM
35C-131
STEP 4. Check resistor connector D-130.
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 resistor connector D-130 in good condition?
YES : Go to Step 5.
NO : Repair or replace the connector, and then go to Step
AC204170
CONNECTOR: D-130
HARNESS SIDE
AQ
1
2
AC203824
CONNECTOR
TWISTED WIRE
AB
10 cm
(4.0 inches)
M-ASTC DIAGNOSIS
TSB Revision
MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM
35C-132
STEP 5. Check the terminator resistor. Measure at resistor
connector D-130.
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.
(1) Disconnect resistor connector D-130, and measure the
resistance at the component-side connector.
(2) Measure the resistance between resistor connector D-130
terminals 1 and 2.
• The resistance should measure 120 ± 20 ohms.
Q: Does the resistance measure 120
± 20 ohms?
YES : Go to Step 6.
NO : Replace the resistor, and then go to Step 6.
STEP 6. Check M-ASTC-ECU connector E-121.
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: Is M-ASTC-ECU connector E-121 in good condition?
YES : Go to Step 7.
NO : Replace the control wiring harness and then go to
Step 7. If the resistor or its connector is repaired or
replaced, repair or replace the connector and then
retest the system.
AC204170
CONNECTOR: D-130
COMPONENT
SIDE
AS
1
2
AC204579
1
2
COMPONENT SIDE: D-130
TEST
HARNESS
AB
TEST
HARNESS
AC204176
CONNECTOR: E-121
HARNESS SIDE
AC
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-133
STEP 7. Check the terminator resistor inside the
M-ASTC-ECU. Measure at M-ASTC-ECU connector E-121.
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.
(1) Disconnect M-ASTC-ECU connector E-121, and measure
the resistance at the component-side connector.
(2) Measure the resistance between M-ASTC-ECU connector
E-12 terminals 83 and 84.
• The resistance should measure 120 ± 20 ohms.
Q: Does the resistance measure 120
± 20 ohms?
YES : Go to Step 8.
NO : Replace the M-ASTC-ECU and then go to Step 8. If
the resistor or its connector is repaired or replaced,
replace the M-ASTC-ECU and then retest the system.
AC204176
CONNECTOR: E-121
COMPONENT
SIDE
AE
76
82
87
75
81
86
74
80
85
73
79
72
78
84
71
77
83
AC204581
COMPONENT SIDE: E-121
TEST
HARNESS
AB
TEST
HARNESS
76
82
87
75
81
86
74
80
85
73
79
72
78
84
71
77
83
M-ASTC DIAGNOSIS
TSB Revision
MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM
35C-134
STEP 8. Check intermediate connector E-122.
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.
Q: Is intermediate connector E-122 in good condition?
YES : Go to Step 9.
NO (If there is a defect at the instrument panel wiring
harness assembly side) : Repair or replace the connector,
and then go to Step 9.
NO (If the resistor is replaced) : Repair its connector and
then retest the system.
NO (If there is a problem at the control wiring harness
assembly side) : Replace the control wiring harness
assembly and then go to Step 9.
NO (If the resistor is replaced) : Repair its connector and
then retest the system.
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
AC203824
CONNECTOR
TWISTED WIRE
AB
10 cm
(4.0 inches)
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