Mitsubishi Montero (2004+). Manual — part 758
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-289
STEP 3. Check the input signal (by using the pulse check
mode of the monitor.)
Check input signal from the driver's side seat belt switch.
Operate scan tool MB991958 according to the procedure below
to display "PULSE CHECK."
1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "PULSE CHECK."
• When the driver's seat belt is fastened, check if scan tool
MB991958 sounds or not.
Q: Does scan tool MB991958 sound when the driver's side
seat belt is fastened?
YES : Go to Step 4.
NO : Refer to Inspection Procedure P-3 "ETACS-ECU does
not receive any signal from the driver's side seat belt
switch
."
STEP 4. Check ETACS-ECU connector D-224 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is ETACS-ECU connector D-224 in good condition?
YES : Go to Step 5.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. Verify that the seat belt warning light
illuminates normally.
AC307591 AB
MB991911
DATA LINK
CONNECTOR
MB991824
MB991827
AC204174
CONNECTOR : D-224
AD
D-224(B)
D-224(B)
HARNESS SIDE
21
23
24
22
32
3433
31
26
27
28
3029
38
39
40
36
37
25
35
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-290
STEP 5. Check at ETACS-ECU connector D-224 in order to
check the ground circuit to the seat belt warning light.
(1) Disconnect ETACS-ECU connector D-224, and measure at
the wiring harness side.
(2) Turn the ignition switch to the "ON" position.
(3) Connect terminal 39 to ground.
Q: Does the seat belt warning light illuminate?
YES : Replace the ETACS-ECU. Verify that the seat belt
warning light illuminates normally.
NO : Go to Step 6.
STEP 6. Check combination meter connector D-03 and
D-04 for loose, corroded or damaged terminals, or
terminals pushed back in the connector.
Q: Are combination meter connector D-03 and D-04 in
good condition?
YES : Go to Step 7.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. Verify that the seat belt warning light
illuminates normally.
AC204174
CONNECTOR : D-224
AD
D-224(B)
D-224(B)
HARNESS SIDE
21
23
24
22
32
3433
31
26
27
28
3029
38
39
40
36
37
25
35
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
ACX01582AB
CONNECTOR D-224
(HARNESS SIDE)
AC204188
CONNECTORS : D-03, D-04
D-04(GR)
AJ
HARNESS SIDE
HARNESS SIDE
D-03(GR)
D-04(GR)
D-03(GR)
51
52
61 60
53
54
56
57
55
63
66 65 64
59
62
58
67
31
32
41 40
33
34
36
37
35
43
46 45 44
39
42
38
47
SYMPTOM PROCEDURES
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SIMPLIFIED WIRING SYSTEM (SWS)
54B-291
STEP 7. Check the seat belt warning light bulb.
Q: Is the seat belt warning light bulb in good condition?
YES : Go to Step 8.
NO : Replace the bulb. Verify that the seat belt warning
light illuminates normally.
STEP 8. Check the combination meter (printed-circuit
board).
(1) Remove the combination meter.
(2) Remove the seat belt warning light bulb. Then measure the
resistance value between the bulb terminals.
(3) Install the bulb to the combination meter, and then measure
the resistance value between connector D-04 terminal 32
and connector D-03 terminal 62. The measured resistance
value should be roughly the same as the value measured in
Step (2).
Q: Are these two resistance values extremely different?
YES : Repair or replace the combination meter (printed
circuit board). Verify that the seat belt warning light
illuminates normally.
NO (much the same) : Go to Step 9.
ACX02344 AB
SEAT BELT WARNING LIGHT
66
65
64
63
62
61
52
51
59
67
58
57
56
55
54
53
60
46
45
44
43
42
41
32
31
39
47
38
37
36
35
34
33
40
ACX02366
CONNECTOR D-03
CONNECTOR D-04
AB
SYMPTOM PROCEDURES
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SIMPLIFIED WIRING SYSTEM (SWS)
54B-292
STEP 9. Measure at combination meter connector D-03 in
order to check the ignition switch (IG1) line of the power
supply to the combination meter.
(1) Disconnect combination meter connector D-03, and
measure at the wiring harness side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal 62 and ground.
• The voltage should be approximately 12 volts (battery
positive voltage).
Q: Is the measured voltage approximately 12 volts (battery
positive voltage)?
YES : Go to Step 11.
NO : Go to Step 10.
STEP 10. Check the wiring harness between combination
meter connector D-03 (terminal 62) and the ignition switch
(IG1).
AC204170
CONNECTOR : D-03
AC
D-03(GR)
HARNESS
SIDE
51
52
61 60
53
54
56
57
55
63
66 65 64
59
62
58
67
D-03(GR)
61
62
63
64
65
66
57
58
59
60
51
52
53
54
55
56
67
ACX01583 AB
CONNECTOR D-03
(HARNESS SIDE)
AC204170
CONNECTOR : D-03
AC
D-03(GR)
HARNESS
SIDE
51
52
61 60
53
54
56
57
55
63
66 65 64
59
62
58
67
D-03(GR)
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