Isuzu N-Series. Manual - part 1059

CAB AND CHASSIS ELECTRICAL 8-341

E-5

E-5

H-14

H-14

H-105

H-105

J-6

J-9

No.

Connector Face

001-013

1

001-014

1

016-003

1

2

3

4

5

6

7

8

9

11 12 13 14

15

16

10

016-004

4

3

2

1

9

8

7

6

5

13 12 11 10

16

15

14

012-001

1

2

3

4

5

6

7

8

9

10 11 12

012-002

4

8

12

3

7

11

2

6

10

1

5

9

004-011

1

3

2

4

000-001

J-41

P-1

P-4

P-2

P-3

P-5

J-23

No.

Connector Face

002-015

1

2

000-004

000-004

000-006

000-006

000-002

001-009

1

8-342 CAB AND CHASSIS ELECTRICAL

H-5

H-6

Fuel Heater and Rear Heater

General Description

The circuit consists of fuel heater, rear heater, rear heat-
er switch and the exhaust brake relay.
The fuel heater circuit is always in “ON” position when
the generator is charging and its temperature is auto-
matically controlled by the circuit breaker built in the fuel
heater.

1

2

3

7

8

9

13

14 15

19

20 21

25

26 27

31

32 33

34

35

36

37

4

5

6

10

11 12

16

17 18

22

23 24

28

29 30

38

39 40

6

5

4

12

11 10

18

17 16

24

23 22

30

29 28

40

39 38

3

2

1

9

8

7

15

14 13

21

20 19

27

26 25

33

32 31

34

35

36

37

N8A5488E

1

2

1

2

1 2 3 4

5 6 7 8

9 10 11 12 13

14 15 16 17 18

2

1

2

1

4 3 2 1

8 7 6 5

13 12 11 10 9

18 17 16 15 14

H - 6

H - 7

H - 8

N8A5489E

CAB AND CHASSIS ELECTRICAL 8-343

Parts Location

F-2, F-3

X-13 HEATER RELAY (12V, 4JH1)

RELAY BOX ASM (No.1)

X-8 EXHAUST BRAKE RELAY

(4JB1 / 4HF1 / 4HG1 4HE1 ENGINE)

N8A0369E

8-344 CAB AND CHASSIS ELECTRICAL

Circuit Diagram

Except 4JH1 Engine

2L

B-7

H-25

H-3

B-59

B-59

N-8

N-8

1

J-52

B-1

J-9

H-6

X-8

H-5

P-1

P-2

P-5

2

X-8

1

2

X-8

X-8

4

5

6

J-52

2

N-8

H-25

3

2

H-3

5

2

B-59

4

1

2

FRAME

30B/R

8

B

FL-1  100A

MAIN

8W

5W

8W/B

3W/B

RELAY; CHARGE(5)

0.85W/R

RELAY; EXHAUST
BRAKE

3B/R

F-2

15A

EXH. BRAKE,
FUEL HEATER

F-3

15A

REAR HEATER

0.5B/R

0.5B/R

0.5B

FUEL HEATER

0.5B/R

REAR HEATER

0.5B

0.85L/R

0.5L/R

0.5L/W

0

.85L/W

H I

LO

OFF

REAR HEATER 
SW

3B

5B

0.5B

2B

0.85L/R

0.85L/W

0.85B/R

1

2

3

0.5W/R

H-25

H-3

0.5B/R

1

6

2B

3B

HEADLIGHT BRACKET (LH)

FRAME-LH(FRONT)

FRAME-LH (CENTER)

N8A0370E