Mitsubishi Montero (2004+). Manual — part 1081
M-ASTC DIAGNOSIS
TSB Revision
MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM
35C-35
STEP 1. Using scan tool MB991958, check data list.
CAUTION
To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector
(16-pin).
(2) Turn the ignition switch to the "ON" position.
(3) When the steering wheel is turned, data list following item
should change.
• Item 32: ST ANGLE
Q: When the steering wheel is turned, does data list item
32 change?
YES : Go to Step 11.
NO : Go to Step 2.
STEP 2. Check the battery power supply to the steering
wheel sensor. Measure at steering wheel sensor connector
D-225.
(1) Disconnect steering wheel sensor connector D-225, and
measure the voltage at the harness-side connector.
(2) Measure the voltage between steering wheel sensor
connector D-225 terminal 1 and body ground.
• The voltage should measure battery voltage (approxi-
mately 12 volts).
Q: Does the voltage measure battery voltage
(approximately 12 volts)?
YES : Go to Step 5.
NO : Go to Step 3.
AC307591 AC
MB991911
MB991824
MB991827
AC307591
DATA LINK
CONNECTOR
AC204172
CONNECTOR: D-225
HARNESS SIDE
AD
3 2
1
4
5
AC204580
3 2
1
4
5
HARNESS SIDE: D-225
AR
M-ASTC DIAGNOSIS
TSB Revision
MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM
35C-36
STEP 3. Check steering wheel sensor connector D-225.
Q: Is steering wheel sensor connector D-225 in good
condition?
YES : Go to Step 4.
NO : Repair or replace the connector, and then go to Step
12.
STEP 4. Check the wiring harness between steering wheel
sensor connector D-225 terminal 1 and fusible link No.1.
NOTE: Also check joint connector D-02 and intermediate con-
nector D-28 for loose, corroded, or damaged terminals, or ter-
minals pushed back in the connectors. If joint connector D-02
or intermediate connector D-28 are damaged, repair or replace
the damaged component(s) as described in GROUP 00E, Har-
ness Connector Inspection
. If the connector has been
repaired or replaced, go to Step 12.
Q: Is the wiring harness between steering wheel sensor
connector D-225 terminal 1 and the fusible link No.1 in
good condition?
YES : Go to Step 12.
NO : Repair the wiring harness, and then go to Step 12.
AC204172
CONNECTOR: D-225
HARNESS SIDE
AD
3 2
1
4
5
AC204172
CONNECTOR: D-225
HARNESS SIDE
AD
3 2
1
4
5
AC204188
CONNECTORS: D-02, D-28
D-02
D-02
D-28
AB
D-28
9 10
8
6 7
31 32
30
29
18 19 20 21
5
4
2
1
3
27
26
24
23
25
12 13 14 15 16 17
28
11
22
33
2 3
27
32
28
33
16
15
4 5
19
18
29
17
34
7 8
35
22
21
9 10
30
36
31
37
25
24
23
6
20
1
14
26
11
13
12
38
M-ASTC DIAGNOSIS
TSB Revision
MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM
35C-37
STEP 5. Check the battery power supply to the steering
wheel sensor. Measure at steering wheel sensor connector
D-225.
(1) Disconnect steering wheel sensor connector D-225, and
measure the voltage at the harness-side connector.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between steering wheel sensor
connector D-225 terminal 2 and body ground.
• The voltage should measure battery voltage (approxi-
mately 12 volts).
Q: Does the voltage measure battery voltage
(approximately 12 volts)?
YES : Go to Step 8.
NO : Go to Step 6.
STEP 6. Check steering wheel sensor connector D-225.
Q: Is steering wheel sensor connector D-225 in good
condition?
YES : Go to Step 7.
NO : Repair or replace the connector, and then go to Step
12.
STEP 7. Check the wiring harness between steering wheel
sensor connector D-225 terminal 2 and ignition switch
(IG2).
AC204172
CONNECTOR: D-225
HARNESS SIDE
AD
3 2
1
4
5
AC204580
3 2
1
4
5
HARNESS SIDE: D-225
AS
AC204172
CONNECTOR: D-225
HARNESS SIDE
AD
3 2
1
4
5
AC204172
CONNECTOR: D-225
HARNESS SIDE
AD
3 2
1
4
5
M-ASTC DIAGNOSIS
TSB Revision
MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM
35C-38
NOTE: Also check joint connector D-01 and junction block con-
nector D-208 and D-210 for loose, corroded, or damaged termi-
nals, or terminals pushed back in the connectors. If joint
connector D-01 or junction block connector D-208 or D-210 are
damaged, repair or replace the damaged component(s) as
described in GROUP 00E, Harness Connector Inspection
. If the connector has been repaired or replaced, go to
Step 12.
Q: Is the wiring harness between steering wheel sensor
connector D-225 terminal 2 and the ignition switch (IG2)
in good condition?
YES : Go to Step 12.
NO : Repair the wiring harness, and then go to Step 12.
AC204170
CONNECTOR: D-01
AB
9 10
8
6 7
31 32
30
29
18 19 20 21
5
4
2
1
3
27
26
24
23
25
12 13 14 15 16 17
28
11
22
33
AC204191
CONNECTORS: D-208, D-210
D-208
AC
HARNESS SIDE
HARNESS SIDE
D-210
D-208
D-210
1
2
3
5
6
4
1
2
7 6
3
9
4
11
12
10
13
5
8
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