Mitsubishi Montero (2002-2004). Manual — part 1130
M-ASTC DIAGNOSIS
TSB Revision
MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM
35C-137
STEP 14. Check the joint connector.
Disconnect joint connector (9), and check the short pin behind
the connector for corrosion, deformation and delamination.
Q: Is joint connector in good condition?
YES : Go to Step 15.
NO : Replace the joint connector.
AC204170
CONNECTOR: D-131
BV
AC204573
4 5
3
12
10
9
11
1 2
6 7 8
JOINT CONNECTOR (9) D-131
AB
M-ASTC DIAGNOSIS
TSB Revision
MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM
35C-138
STEP 15. 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 16.
NO : Repair or replace the connector(s).
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-139
STEP 16. 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 17.
NO : Replace the resistor.
STEP 17. 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 18.
NO : Replace the control wiring harness assembly.
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-140
STEP 18. 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-121 terminals 83 and 84.
• The resistance should measure 120 ± 20 ohms.
Q: Does the resistance measure 120
± 20 ohms?
YES : Go to Step 19.
NO : Replace the M-ASTC-ECU.
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
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