26-Way Connector; 16-Way Connector - Isuzu 4HL1 Workshop Manual

Engine control system
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26-Way Connector

Pin No.
1
2
Exhaust brake solenoid valve
3
4
5
6
7
8
9
10
11
12
13

16-Way Connector

Pin No.
14
15
16
17
18
19
20
21
1
2
3
12
13
4
5
6
7
8
9
10
11
39
40
41
50 51
42
43
44
45
46
47
48
49
Connected to
ECO (power save) relay
Exhaust brake lamp
PTO switch
DLC (diagnostic switch)
Warm-up (QWS) switch
Connected to
VS sensor signal
ABS/ASR controller
AT controller
ABS/ASR controller
AT controller
ABS/ASR controller
14
15
16 17
18
19
20 21
22
23
24
25 26
52
53
54
55
56
57
58
59
60
61
62
63
64
Pin No.
39
40
41
42
43
44
45
46
47
48
49
50
51
Pin No.
52
53
54
55
56
57
58
59
Engine Control System 1A-37
28
37 38
27
29
30
31
32 33 34
35
36
66
65
67
68 69 70 71
72
73
74
75
76
Connected to
VIM power ground
Glow lamp
Neutral (P/N) switch
Starter switch (ST)
Freezer switch
Stop lamp switch
Clutch switch
Exhaust brake switch
Connected to
VIM power ground
AT controller
Voice alarm unit (idle stop)
AT controller
ABS/ASR controller
AT controller
LNW21ASF001901

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