Isuzu N-Series. Service manual - part 1165

8-372 CAB AND CHASSIS ELECTRICAL

Circuit Diagram

For 12 Volt (4JH1 Engine)

ABS

60A

P-5

P-2

BATTERY

P-1

B-1

B-7

0.85B

H-6

2

B-51

7

B-51

8

FL-9

MAIN
100A

FL-1

KEY SW

50A

FL-2

METER

10A

F-16

8B

8W/B

3R

8W/B

3W/B

3W/B

0.5G/Y

0.5G

SW ; STOP LIGHT

B

OFF

ACC

ON

ST

B-67

2

B-67

3

KEY SW

3W/L

0.5B

2B

3B

0.5B/Y

0.5B/Y

0.5B/Y

STOP LIGHT

10A

F-5

B-66

4

B-66

1

0.5B/Y

0.5W

X-5

4

X-5

5

X-5

1

X-5

3

3B/Y

METER

ABS

RELAY ;
ABS IND.

3W/L

H-7

1

3B

3B

2B

0.3W/V

22

H-5

J-9

P-4

P-3

FRAME-LH (CENTER)

FRAME LH (FRONT)

HEADLIGHT BRACKET (LH)

C

D

E

F

A

B

G

H

N8A5590E

CAB AND CHASSIS ELECTRICAL 8-373

J-78

4

J-78

3

0.5R

0.5W

0.3W/G

0.3W/B

0.3W/G

0.3W/B

0.3W/B

0.5B

0.5B

SPEED
SENSOR
(RR,RH)

J-74

1

J-74

2

0.5P

0.5L

SPEED
SENSOR
(FRT,RH)

J-75

1

J-75

2

0.5V

0.5R/B

0.5P

0.5L

0.5V

0.5R/B

SPEED
SENSOR
(FRT,LH)

0.85B

J-177

22

J-177

16

STOP LAMP

EHCU ; ABS

ECM

B-234  (62)

RL 12V

34

J-78

2

J-78

1

24

MOTOR +B

RL SIG

32

2

VALVE +B

FL SIG

33

23

MOTOR GND

FL GRD

10

1

VALVE GND

FR SIG

11

8

EXH.B/CUT
OUT

FR GRD

21

7

EXH.B/CUT
IN

RR 12V

12

6

IND.

RR SIG

29

IG

MODE1

MODE2

MODE3

J1850

4

FRASH

VEHICLE TYPE CONNECTOR

NKR77-3 (FLAT LOW)

EXCEPT NKR77-3
(EXCEPT FLAT LOW)

2B

3R

3R

3B

3B

0.5B/Y

0.3W/V

0.3W/V

0.3W/V

0.5B/Y

0.5B/Y

0.5B/G

0.5B/R

0.5B/W

1.25B

0.5G

0.5G

0.5G

0.5G

0.5G

H-5

11

2

(30)

ECM

H-16

2

STOP

LIGHT

(RH)

STOP

LIGHT

(LH)

0.5G

1.25B

1.25B

0.5L

0.5Y

SPEED
SENSOR
(RR,LH)

16 15 14 13 12 11 10 9

8

7

6

5

4

3

2

1

H-5

35

H-5

36

H-5

40

H-14

10

H-14

11

H-14

12

DATA LINK
CONNECTOR

B-79

0.3W/G

H-5

27

H-5

26

3R

0.5G

0.5LG/B

0.5LG/W

0.5LG/B

0.5LG

0.5LG/W

0.5LG/B

3B

3B

ECM

B-234  (32)

B-234

J-177

J-177

J-177

J-177

J-177

J-177

J-177

J-177

J-177

J-177

J-177

J-177

J-177

J-177

J-177

J-177

H-14

H-14

15

H-14

16

H-15

1

H-15

2

H-15

5

H-15

6

H-15

4

H-15

3

H-15

7

H-15

8

3

J-177

17

J-177

14

J-177

15

J-177

H-14

9

H-17

4

H-17

3

H-17

1

H-17

2

H-17

H-17

H-17

H-17

H-17

H-17

H-17

H-17

R-1

2

6

R-1

7

H-16

7

H-14

R-6

2

6

R-6

C

D

A

B

E

F

G

H

0.5Y

0.5L

ECM

35

45

B-234

B-234

N8A5591E

8-374 CAB AND CHASSIS ELECTRICAL

For 24 Volt - 4HE1 Engine (Single Cab Model)

ABS

40A

P-4

P-5

BATTERY

P-3

P-2

BATTERY

P-1

FRAME-LH (CENTER)

3B

2B

2B

2B

2B

3B

B-7

HEADLIGHT BRACKET (LH)

3B

B-1

FRAME-LH (FRONT)

0.85B

RELAY ;

EXH.BRAKE

X-8

1

X-8

5

X-8

2

H-6

2

X-8

3

B-51

7

B-51

8

FL-9

MAIN
100A

or

120A

FL-1

EXH.BRAKE

10A

F-2

KEY SW

40A

FL-2

METER

10A

F-16

8B

8W/B

3R

5W/B 3W/B

0.5W/R

0.5B

3W/B

0.5G/Y

0.5G

0.5LG

SW ; STOP LIGHT

B

OFF

ACC

ON

ST

B-67

2

B-67

3

KEY SW

3W/L

3W/L

3B/R

0.5LG/W

0.5LG/W

0.5B

0.5B

0.5B

0.5B/Y

0.5LG/B

0.5P

0.5B

0.5B/G

0.5

LG/R

0.5B

0.5B

0.5B

0.5B

2B

0.5LG/B

0.5LG/B

0.5LG/R

0.5B/Y

0.5LG/B

RELAY;

CHARGE

X-28

4

X-28

2

X-28

5

X-28

1

H-8

8

H-7

1

X-28

3

STOP LIGHT

10A

F-5

B-66

2

B-66

1

SW ; NEUTRAL

(Neutral=ON)

RELAY ;
EXH. BRAKE
CONTROL

SW ; EXH.BRAKE

0.5LG/B

0.5B/Y

0.5B/Y

0.5W

X-5

4

X-5

5

X-5

1

X-5

3

E-11

2

H-14

5

E-11

1

X-25

3

X-25

5

H-14

10

H-5

22

3B/Y

METER

ABS

5

H-8

10

B-69

2

X-25

4

X-25

1

H-8

17

SW ; CLUTCH

B-89

2

B-89

1

B-52

10

B-51

1

IND. LAMP ;

EXH. BRAKE

0.5LG/R

0.5LG/R

H-5

38

0.5G/O

RELAY ;
ABS IND.

A/C
COMPRESSOR

0.5B/Y

0.5B/Y

RELAY ;
EXH. B/CUT
(ABS)

0.5B

0.5B

1.25B

0.85B

0.3W/V

0.5LG/R

B-69

J-9

D

E

F

G

H

I

J

A

B

C

K

L

M

N8A5592E

CAB AND CHASSIS ELECTRICAL 8-375

1.25B

1.25B

7

H-16

7

H-14

SPEED
SENSOR
(RR,RH)

SPEED
SENSOR
(FRT,RH)

SPEED
SENSOR
(FRT,LH)

SPEED
SENSOR
(RR,LH)

STOP

LIGHT

(LH)

STOP

LIGHT

(RH)

0.5G

1.25B

R-1

2

6

R-1

R-6

2

6

R-6

2B

J-148

1

J-148

2

0.5R

0.5W

0.3Y

0.3W/G

0.3W/G

0.3W/B

0.3W/G

0.3W/B

0.3W/B

0.3L

0.5B

0.5B

J-74

1

J-74

2

0.5P

0.5L

J-75

1

J-75

2

1

2

0.5V

0.5R/B

0.5V

0.5R/B

3B

0.5B

0.5B

0.5B

1.25B

0.5LG/W

J-177

22

J-177

16

STOP LAMP

EHCU ; ABS

RL 12V

34

J-149

1

J-149

2

24

MOTOR +B

RL SIG

32

2

VALVE +B

FL SIG

33

23

MOTOR GND

FL GRD

10

1

VALVE GND

FR SIG

11

8

EXH.B/CUT
OUT

FR GRD

21

7

EXH.B/CUT
IN

RR 12V

12

6

IND.

RR SIG

29

3

IG

J1850

4

15

MODE1

FRASH

14

MODE2

17

H-5

30

H-5

24

3

4

MODE3

0.5L/G

0.5L/G

0.5LG

0.5B

0.5LG

J-23

2

H-13

2

VEHICLE TYPE CONNECTOR
FOR TURKEY / GCC
(4-WHEEL DRUM BRAKE MODEL)

FOR OTHER COUNTRIES

SW ; ACCEL

B-75

1

B-75

2

B-234

14

B-233

21

QWS

ECM

CHECKER

B-234

29

B-233

14

EXH.BRAKE

DIAG

B-234

15

H-5

37

FICD

0.5B/G(NQR)

3R

3R

0.5B/Y

0.3W/V

0.3W/V

0.5LG

0.5LG/B

0.5B/R(NQR)

0.5B/W(NQR)

NQR

0.5LG

0.5LG

0.5L/W

0.5L/W

0.5G

3B

0.5G

H-5

11

H-16

2

0.5L

0.5Y

16 15 14 13 12 11 10 9

8

7

6

5

4

3

2

1

H-13

12

J-41

2

J-41

4

J-23

3

J-23

1

DIODE ; FICD

J-31

2

J-31

1

MAG.VALVE ;
EXH.BRAKE

VSV ;
FICD

J-40

2

J-40

1

VSV ; INT.
THROTTLE

H-13

6

H-5

32

DATA LINK
CONNECTOR

B-79

0.5G

0.5LG

3R

0.5LG/B

1.25B

3B

0.5B

J-177

J-177

J-177

J-177

J-177

J-177

J-177

J-177

J-177

J-177

J-177

J-177

J-177

J-177

J-177

J-177

J-177

J-177

J-177

J-177

10

H-14

2

H-14

12

H-14

11

H-14

9

H-14

15

H-14

16

H-14

7

H-15

8

H-15

H-5

6

H-17

2

H-17

1

H-17

3

H-17

4

H-17

H-17

H-17

H-17

H-17

H-17

H-17

H-17

H-15

H-15

H-15

H-15

5

6

0.5P

0.5L

H-15

H-15

D

E

F

G

H

I

J

A

B

C

K

L

M

N8A5593E