Mitsubishi Montero (2004+). Manual — part 1092
M-ASTC DIAGNOSIS
TSB Revision
MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM
35C-79
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: Do the voltage measure one volt or less?
YES : Go to Step 9.
NO : Repair the wiring harness wires between joint
connector (9) and the steering wheel sensor
connector.
M-ASTC DIAGNOSIS
TSB Revision
MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM
35C-80
STEP 9. Measure the voltage in the CAN_L line. Measure
the voltage 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 voltage at joint
connector (9).
(2) Turn the ignition switch to the "ON" position.
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 joint connector (9) D-131
terminal 11 and body ground.
• The voltage should measure one volt or less.
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: Do the voltage measure one volt or less?
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
AC204580
HARNESS SIDE: D-131
AM
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-81
YES : Retest the system.
NO : Repair the wiring harness wires between joint
connector (9) and the intermediate connector.
STEP 10. Check the resistance in the CAN_L 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 connector E-122 and steering
wheel sensor connector D-225, and measure the resistance
at the male intermediate connector (instrument 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.
(4) Measure the resistance between intermediate connector
E-122 terminal 20 and body ground.
• The resistance should be infinite.
Q: Is the resistance infinite?
YES : Replace the steering wheel sensor.
NO : Go to Step 11.
AC204172
CONNECTOR: D-225
HARNESS SIDE
AD
3 2
1
4
5
AC204176
CONNECTOR: E-122
E-122(L)
MALE SIDE
E-122(L)
AF
1
12
2
13
3
14
4
15
5
16
6
17
7
18
8
19
9
20
10
21
11
22
AC204581
FEMALE CONNECTOR: E-122
AG
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-82
STEP 11. Check the resistance in the CAN_L 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 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 12 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?
YES : Go to Step 12.
NO : Repair the wiring harness wires between joint
connector (9) and the data link connector.
AC204170
CONNECTOR: D-131
AT
6
1
9 8
2
7
10
12 11
4
5
3
AC204581
HARNESS SIDE: D-131
AS
TEST
HARNESS
6
1
9 8
2
7
10
12 11
4
5
3
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