Isuzu N-Series. Service manual — part 738
Engine Control System (4JH1) 6E-3
Specifications
Temperature vs Resistance
Engine Coolant Temperature vs. Resistance
Intake Air Temperature vs. Resistance
Altitude vs Barometric Pressure
°C
°F
Ω
Temperature vs. Resistance Value (Approximately)
120
248
120
110
230
160
100
212
200
90
194
260
80
176
350
70
158
470
60
140
640
50
122
880
40
104
1250
30
86
1800
20
68
2650
10
50
4000
0
32
6180
-10
14
9810
-20
-4
16000
-30
-22
27000
°C
°F
Ω
Temperature vs. Resistance Value (Approximately)
100
212
190
90
194
240
80
176
320
70
158
430
60
140
590
50
122
810
40
104
1150
30
86
1650
25
77
2000
20
68
2430
10
50
3660
0
32
5650
-10
14
8970
-20
-4
14700
Altitude Measured
in Meters (m)
Altitude Measured
in Feet (ft)
Barometric
Pressure
Measured in
Kilopascals (kPa)
Determine your altitude by contacting a local weather
station or by using another reference source.
4267
14000
56-64
3962
13000
58-66
3658
12000
61-69
3353
11000
64-72
3048
10000
66-74
2743
9000
69-77
2438
8000
71-79
2134
7000
74-82
1829
6000
77-85
1524
5000
80-88
1219
4000
83-91
914
3000
87-98
610
2000
90-98
305
1000
94-102
0
0 Sea Level
96-104
-305
-1000
101-105
6E-4 Engine Control System (4JH1)
Schematic and Routing Diagrams
Vacuum Hose Routing Diagram
Legend
1. Vacuum Pump (part of ACG)
2. Vacuum Hose
3. EGR Valve
4. EGR Solenoid Valve
1
2
3
4
N6A3884E
Engine Control System (4JH1) 6E-5
Engine Controls Schematics
Power Distribution (1)
SBF-1
MAIN
100A
F-8
ENG.(B1)
15A
F-5
ST
OP
LIGHT
10A
F-9
ENG.(B2)
15A
2L
8BLK
8
WHT/
BLK
30
BLK
8
WHT/
BLK
3
WHT/
BLK
0.5
WHT/
RED
3
WHT/
BLK
0.5
WHT/
BLU
3
BLK/
BLU
3
BLU
0.5
BLK
0.5
GR
Y/
YEL
2
WHT/
BLK
3
BLK/
YEL
0.5
BLK/
YEL
0.5
BLK/
YEL
0.5
BLK/
YEL
0.5
BLK/
YEL
3
BLK/
YEL
3
BLK/
YEL
ECM Main
Relay
0.85
BRN
2
BLU
A/C
Thermo
Relay
B-7
Headlight
Bracket
Data Link
Connector
Brake
Switch
30BLK
2
H-6
Starter
ACG
Meter
4
2
5
3
X-1
1
X-1
1
Charge
Relay
4
2
5
1
X-12
X-12
Heater
A/C Relay
F-1
AIR CON
10A
SBF-25
HEA
TER
30A
2
BLK
3
BLK
5
BLK
Starter
Relay
2
1
ST
ON
ACC
OFF
Ignition
Switch
B-67
3
B-67
H-7
SBF-2
KEY
50A
SBF-3
GLOW
60A
3
WHT/
BLU
Glow Relay
P-1
P-3
P-2
P-5
P-4
Battery
ECM
W/S-M
Fuse & Relay Box
(Behind the Cab)
Fuse &
Relay Box
(Glove Box)
Relay Box
(Instrument
Panel)
3
WHT/
BLU
A/C
Thermo
Relay
Fuse &
Relay Box
(Glove Box)
N6A3862E
6E-6 Engine Control System (4JH1)
Power Distribution (2)
2
5
X-1
1
3
X-1
ST
ON
ACC
OFF
Ignition
switch
3
BLK/
YEL
0.5
BLK/
YEL
2
1
B-67
3
1
H-7
8BLK
SBF-2
KEY
50A
3
WHT/
BLU
3
WHT/
BLU
3
WHT/
BLU
B-67
4
2
H-6
F-22
ST
A
TER
10A
F-16
METER
10A
F-20
ABS(IG)
10A
F-15
AUDIO(IG),
CIGAR LIGHTER
15A
Key ON
Relay
F-12
H/LAMP
LEVEL
10A
F-1
1
TURN
LIGHT
10A
F-10
FRONT
WIPER &
W
ASHER
15A
F-25
MARKER
LAMP
15A
F-27
RR FOG
10A
F-26
COND.F
AN
15A
SBF-1
MAIN
100A
SBF-26
POWER
WINDOW
30A
SBF-8
ST
AR
TER
60A
SBF-9
ABS
60A
SBF-3
GLOW
60A
SBF-4
HEAD
LAMP
30A
Heater
Relay
Glow Plug
Relay
F-4
AUDIO (B),
DOOR LOCK
15A
F-5
ST
OP
LIGHT
10A
F-8
ENG.
(B1)
15A
F-9
ENG.
(B2)
15A
F-19
HORN,
HAZARD
15A
2
WHT/
BLK
3
WHT/
BLK
3
WHT/
BLK
3
WHT/
BLU
3
BLU
0.5
BLK
W/S-G
W/S-H
W/S-A
Battery
2BLK/YEL
Fuse & Relay Box
(Behind the Cab)
Fuse &
Relay Box
(Glove Box)
Heater
Relay
N6A3863E
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