Mitsubishi Montero (2004+). Manual — part 1078
M-ASTC DIAGNOSIS
TSB Revision
MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM
35C-23
STEP 2. Check the solenoid valve drive circuit. Measure at
M-ASTC-ECU connector E-119 by backprobing.
(1) Measure the voltage by backprobing (i.e. without
disconnecting M-ASTC-ECU connector E-119).
(2) Turn the ignition switch to the "ON" position.
(3) Measure voltage between the following terminals. It should
be approximately 12 volts (battery positive voltage).
When DTC 47 is set:
• M-ASTC-ECU connector E-119 terminal 6 and ground
When DTC 48 is set:
• M-ASTC-ECU connector E-119 terminal 5 and ground
Q: Does the voltage measure battery voltage
(approximately 12 volts)?
YES : Go to Step 3.
NO : Go to Step 4.
STEP 3. Check M-ASTC-ECU connector E-119.
Q: Is M-ASTC-ECU connector E-119 in good condition?
YES : Go to Step 5.
NO : Repair or replace the connector, and then go to Step
AC204176
CONNECTOR: E-119
HARNESS
SIDE
AJ
9
8
21 20
31 30
7
6
5
4
3
2 1
18
28
1716
13
27
15
25
14
26
12
24
11
23
10
22
19
29
AC204580
COMPONENT SIDE: E-119
AQ
1 2
10 11
22 23
3
4
5
6
7
8
9
13
25
1415
18
26
16
27
17
28
19
29
20
30
21
31
12
24
AC204580
COMPONENT SIDE: E-119
AP
1 2
10 11
22 23
3
4
5
6
7
8
9
13
25
1415
18
26
16
27
17
28
19
29
20
30
21
31
12
24
AC204176
CONNECTOR: E-119
HARNESS
SIDE
AJ
9
8
21 20
31 30
7
6
5
4
3
2 1
18
28
1716
13
27
15
25
14
26
12
24
11
23
10
22
19
29
M-ASTC DIAGNOSIS
TSB Revision
MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM
35C-24
STEP 4. Check the wiring harness between HBB connector
B-14 terminal 6 or 5 and M-ASTC-ECU connector E-119
terminal 12 or 11.
When DTC 47 is set:
• M-ASTC-ECU connector E-119 terminal 6 and HBB con-
nector B-14 terminal 12
When DTC 48 is set:
• M-ASTC-ECU connector E-119 terminal 5 and HBB con-
nector B-14 terminal 11
Q: Is the wiring harness between HBB connector B-14
terminal 6 or 5 and M-ASTC-ECU connector E-119
terminal 12 or 11 in good condition?
YES : Go to Step 5.
NO : Repair the wiring harness, and then go to Step 6.
AC204169
CONNECTOR: B-14
B-14(B)
B-14(B)
HARNESS SIDE
AB
20 19
17
14 13
11
21
15
22
16
18
12
AC204176
CONNECTOR: E-119
HARNESS
SIDE
AJ
9
8
21 20
31 30
7
6
5
4
3
2 1
18
28
1716
13
27
15
25
14
26
12
24
11
23
10
22
19
29
M-ASTC DIAGNOSIS
TSB Revision
MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM
35C-25
STEP 5. Check the solenoid valve for continuity. Measure
the resistance at HBB connectors B-14 and B-18.
(1) Disconnect HBB connectors B-14 and B-18, and measure
the resistance at the component-side connector.
(2) Measure the resistance between the following terminals.
When DTC 47 is set:
• Measure the resistance between HBB connector B-14
terminal 12 and HBB connector B-18 terminal 34.
• The resistance should measure 3.5 − 3.9 ohms
AC204187
CONNECTORS: B-14, B-18
COMPONENT SIDE
AB
B-14(B)
B-14(B)
COMPONENT SIDE
B-18(B)
B-18(B)
19 20
22
13 14
16
18
12
17
11
21
15
32
33
31
34 35
AC204582
COMPONENT SIDE: B-18
AS
COMPONENT SIDE: B-14
19 20
22
13 14
16
18
12
17
11
21
15
32
33
31
34 35
M-ASTC DIAGNOSIS
TSB Revision
MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM
35C-26
When DTC 48 is set:
• Measure the resistance between HBB connector B-14
terminal 11 and HBB connector B-18 terminal 34.
• The resistance should measure 3.5 − 3.9 ohms
Q: Does the resistance measure 3.5
− 3.9 ohms?
YES : Replace the M-ASTC-ECU, and then go to Step 6.
NO : Replace the HBB master cylinder and hydraulic unit
assembly, and then go to STEP 6.
STEP 6. Recheck for diagnostic trouble codes.
Q: Does DTC 47 or 48 reset?
YES : Go to Step 1.
NO : The procedure is complete.
AC204582
COMPONENT SIDE: B-18
AR
COMPONENT SIDE: B-14
19 20
22
13 14
16
18
12
17
11
21
15
32
33
31
34 35
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