Mitsubishi Montero (2004+). Manual — part 930
AUTOMATIC TRANSMISSION DIAGNOSIS
TSB Revision
AUTOMATIC TRANSMISSION
23A-295
DTC 56: "N" Range Light System
AC100554
"N" Range Light System Circuit
AC
AUTOMATIC TRANSMISSION DIAGNOSIS
TSB Revision
AUTOMATIC TRANSMISSION
23A-296
AC204395
CONNECTOR : C-04
AF
C-04 (B)
4
9
5
10
3
8
2
7
6
1
AC204188
CONNECTORS : D-01, D-03, D-30, D-32
D-01
D-03 (GR)
AW
D-32 (GR)
D-30
D-01,D-30
D-32
D-03
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
58
57
67
66
56
54 55
64
59
53
52
62
61
63
65
60
51
10
9
23
22
12
11
25
24
8
6 7
20
13
5
4
18
17
19
21
16
3
2
15
14
1
AC204681AC
CONNECTOR: D-134
D-134 (GR)
61 62
63 64
65 66 67 68 69 70 71 72 73
82
89
81
88
80
79
78
77
87
86
85
76
75
74
84
83
AC204191
CONNECTORS : D-208, D-212
5 6
2
4
3
1
JUNCTION BLOCK
(FRONT VIEW)
3
10
9
4
11
8
7
1
5
2
6
D-208
D-208
D-212
D-212
AS
AUTOMATIC TRANSMISSION DIAGNOSIS
TSB Revision
AUTOMATIC TRANSMISSION
23A-297
.
CIRCUIT OPERATION
If a fail-safe is triggered while driving forward, the
PCM flashes the "N" range light once per second
(triggered fail-safe). The PCM does this by switching
battery positive voltage to terminal 75.
.
DTC SET CONDITIONS
If the PCM detects a fail-safe condition, it will attempt
to illuminate the "N" range light. The PCM sends a 12
volts pulse for 60
− 180 ms. If it does not detect a
voltage drop during the pulse, it waits about 60 sec-
onds and pulses 12 volts again for 60
− 180 ms. If
the PCM does no detect the voltage drop before the
ignition switch is turned the "LOCK" (OFF), the PCM
will consider it as an short circuit of the "N" range
light circuit and DTC 56 is set.
.
TROUBLESHOOTING HINTS (THE MOST LIKELY
CAUSES FOR THIS CODE TO BE SET ARE:)
• Defective "N" range light bulb
• Damaged harness, connector
• Malfunction of the PCM
DIAGNOSIS
Required Special Tool:
• MB991958: Scan Tool (MUT-III Sub Assembly)
• MB991824: V.C.I.
• MB991827: MUT-III USB Cable
• MB991911: MUT-III Main Harness B
AC204194
CONNECTORS : E-11, E-113, E-114
E-113
E-113
E-11
E-11
BD
E-114
E-114
3
10
16
9
7 8
6
1
4
2
5
11
14
1213
15
1
6
2
7 8 9 10 11 12 13 14
3 4 5
38
28
16
33
22
10
31
19
7
1
18
30
29
17
5
6
21
20
32
8
2
9
25
13
3
24
23
3435
1112
27
26
3637
14
4
15
AUTOMATIC TRANSMISSION DIAGNOSIS
TSB Revision
AUTOMATIC TRANSMISSION
23A-298
STEP 1. Check the "N" range light bulb.
(1) Turn the ignition switch to the "ON" position.
(2) Move the selector lever to "N" position.
• The "N" range light in the combination meter illuminates.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Does the "N" range light illuminate?
YES : Go to Step 6.
NO : Go to Step 2.
STEP 2. Check the "N" range light bulb.
(1) Remove the combination meter. Refer to GROUP 54A,
Chassis Electrical
− Combination Meters Assembly and
Vehicle Speed Sensor
(2) Check the "N" range light bulb.
Q: Is the bulb in good condition?
YES : Go to Step 3.
NO : Replace the "N" range light bulb.
STEP 3. Check combination meter connectors D-03 and
D-32 for loose, corroded or damaged terminals, or
terminals pushed back in the connector.
Q: Are the connectors and terminals in good condition?
YES : Go to Step 4.
NO : Repair or replace the damaged components. Refer to
GROUP 00E, Harness Connector Inspection
AC204188
CONNECTORS : D-03, D-32
D-03 (GR)
AX
D-32 (GR)
D-32
D-03
58
57
67
66
56
54 55
64
59
53
52
62
61
63
65
60
51
10
9
23
22
12
11
25
24
8
6 7
20
13
5
4
18
17
19
21
16
3
2
15
14
1
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