Isuzu N-Series. Manual - part 1094

8-88 CAB AND CHASSIS ELECTRICAL

Exhaust Brake System and Engine Control

Parts Location

For 4HE1-TC Engine

B-52, B-51EXHAUST BRAKE

INDICATOR LIGHT AND

GLOW LIGHT (METER)

B-79 DATA LINK CONNECTOR

B-1

RELAY BOX ASM (No.2)

X-14 TIMING RELAY

B-233, 234 ECU

H-15

H-14

H-13

FUSE BOX ASM 

F-2, F-9, F-13, F-16, F-22

X-1 CHARGE RELAY

N8A5599E

CAB AND CHASSIS ELECTRICAL 8-89

For 4JH1 Engine

N8A5103E

8-90 CAB AND CHASSIS ELECTRICAL

For 4HK1-TC Engine

N8A5102E

CAB AND CHASSIS ELECTRICAL 8-91

Circuit Diagram

4HE1-TC Engine for Hong Kong (With ABS) (1)

4

5

2

17

3

X-8

X-8

X-8

X-8

FL-3

60A

GLOW

5W

3W/L

STARTER SW

FL-1

100A

MAIN

FL-2

40A
KEY

H-7

1

2

3

B-67

4

B-67

B-67

F-22

10A
STARTER

F-16
10A
METER

OFF

ACC

ON

ST

B-7

0.5W/R

0.5B/Y

0.5L/R

0.5LG/B

RELAY

EXHAUST BRAKE

0.5LG/B

RELAY:EXHAUST

BRAKE CONTROL

SW:
CLUTCH

0.5LG/R

0.5LG/W

F-2

FUEL HEATER
EXH BRAKE

5

4

2

1

H-6

P-1

P-2

P-3

P-4

P-5

2

0.5B

SW:ACCEL

GLOW INDICATOR LIGHT

0.5B/Y

0.3L/R

0.5L/W

0.5L/W

0.5L/G

0.5L/R

0.5G/O

0.3O/L

3W/B

0.3B/W

0.5B/Y

3B/Y

0.5B/Y

3W/B

5W

2L

0.5B/Y

0.5W/L

RELAY:CHARGE

3B/Y

3B/L

F-9

10A
ENG.
(IG)

F-13
10A
ENG.
STOP

B

ST

GLOW

IGN

ECM

FICD

EXH

BRAKE

0.5B/Y

X-1

3

5

2

4

X-1

X-1

X-1

A

X-25

H-5

38

H-14

10

H-5

22

H-14

5

X-25

X-25

X-25

H-8

3

1

J-23

J-23

J-23

H-5

37

A/C

COMP

B-89

1

2

B-89

B-75

2

1

B-75

H-13

2

2

0.5LG

0.5LG/R

32

H-13

6

VSV:FICD

1

2

12

VSV:INTAKE
THROTTLE

0.5B

0.5LG

1

2

MAGNETIC 
VALVE:
EXHAUST 
BRAKE

FRAME-LH
(CENTER)

2

1

J-31

J-31

J-9

H-5

H-5

15

ACG(L)

B-51

B-51

8

6

8

B-234

18

B-233

3

B-233

30

B-234

19

B-233

9

3

B-234

B-234

J-41

H-13

0.5B

J-41

J-40

J-40

SW:NEUTRAL

E-11

2

1

E-11

DIODE

X-28

X-28

X-28

X-28

X-28

J-9

H-8

H-8

B-69

B-69

ABS

C/U

J-177

J-177

B-51

B-52

B-1

0.58

0.3W/B

0.3W/B

0.5LG/R

SW:

EXH BRAKE

0.5LG/W

2B

0.5LG/B

0.5LG

0.3W/G

0.5LG/B

RELA

Y

:

EXH BRAKE CUT

0.5B/G

0.5B

0.3B

0.5B

0.5B

1

3

4

0.5B/Y

5

2

10

H-14

14

H-14

13

5

8

7

2

29

6

1

10

J-177

J-177

H-5

24

0.5LG

2B

0.5P

8

H/L BRKT

LH

FRAME LH

(FRONT)

10A

H-15

6

H-15

3

N8A5106E