Isuzu N-Series. Manual - part 1098

8-104 CAB AND CHASSIS ELECTRICAL

4JH1 Engine (10)

0.5

BLU/

RED

USW

JOINT2

3

BLU/

RED

0.5

YEL

0.5

WHT/

BLK

0.5

GRN

0.5

BLU/

RED

0.5

BLU/

RED

0.5

GRN/

YEL

0.5

GRN

4

1

3

2

B-66

Brake

Switch

2

1

8

7

6

3

1

2

B-89

B-89

Clutch

Switch

ECM

EHCU

(ABS

Module)

65

Stop

Light

F-5

ST

OP

LIGHT

10A

31

ECM

Main

Relay

Glow

Relay

1

H-6

30

0.5

L

T

 GRN

0.5

BLK

2

1

J-31

J-31

40

0.5

L

T

 GRN/

WHT

0.5

BLU/

RED

2

1

J-40

J-40

95

Intake

Throttle

Solenoid

V

alve

Exhaust

Brake

Solenoid

V

alve

MAF Sensor

EGR Solenoid V

alve

A/C Compressor Relay

A/C Signal Relay

9

32

H-5

0.5

L

T

 GRN

0.5

L

T

 GRN/

WHT

B-234

0.5

L

T

 GRN/

BLU

0.5

BLU/

RED

2

1

B-69

B-69

Exhaust

Brake

Switch

64

IPC

12V

Brake

pedal

switch1

signal

Exhaust

brake

switch

signal

Clutch

switch

signal

Brake

pedal

switch2

signal

Intake

throttle

solenoid

valve

control

Exhaust

brake

solenoid

valve

control

Fuse &

Relay Box

(Glove Box)

J/C-E

PCU

Idle

Switch

Resistor

Engine

W

arm Up

Switch

8

7

10

1

1

H-14

0.5

L

T

 GRN/

WHT

0.5

L

T

 GRN/

WHT

0.5

L

T

 GRN/

BLK

0.5

L

T

 GRN/

BLK

62

32

B-234

J-177

0.5

L

T

 GRN/

BLK

0.5

L

T

 GRN/

WHT

36

40

H-5

12V

Exhaust

brake 

cut

signal

input

Exhaust

brake 

cut

signal

feedback

input

Exhaust

brake

cut

signal

feedback

output

Exhaust

brake 

cut

signal

output

0.5

L

T

 GRN/

BLU

12V

N6A3872E

Neutral

switch

signal

Resistor

B-342

B-342

0.3

BLK

0.5

BLK/

WHT

0.5

BLK/

WHT

0.5

BLK/

WHT

2

1

J-50

J-50

Neutral

Switch

9

H-8

87

B-233

W/S-C

0.5

BLU/

RED

1

2

CAB AND CHASSIS ELECTRICAL 8-105

4HK1-TC Engine (1)

SBF-2

KEY

40A

SBF-1

MAIN

100A or 120A

2L

30

BLK/

RED

8 BLK

0.3

GRN/

ORN

3

WHT/

BLK

F-1

HEATER,

AIR CON

15A

Heater &

A/C Relay

1

2

X-12

5

4

X-12

F-2

FUEL

HEATER

10A

F-7

TAIL

LIGHT

10A

Heater

Relay

1

2

X-8

5

4

X-8

Tail

Relay

1

2

X-4

5

4

X-4

Charge

Relay

3

BLK/

RED

3

BLU

5

WHT

5

WHT/

BLK

8

WHT/

BLK

3

WHT/

BLK

3

WHT/

BLK

0.5

WHT/

RED

0.5 WHT/RED

3

WHT

F-22

STARTER

10A

F-9

ENG.

(IG)

10A

F-16

METER

10A

3

BLK/

YEL

W/S-H

W/S-E

USW

JOINT 3

3

BLK/

YEL

3

BLK

0.5

BLK

2

BLK

0.5 BLK

B-67

4

H-6

2

H-7

1

SBF-3

GLOW

60A

3

BLK/

BLU

0.5

BLK

3

WHT/

RED

1.25

RED

Glow

Plug

Relay

3

4

X-20

2

5

X-20

SBF-8

STARTER

60A

Fuse &

Relay Box

(Behind

the Cab)

Fuse &

Relay Box

(Behind

the Cab)

Fuse &

Relay Box

(Glove Box)

Relay Box

(Instrument

 Panel)

Relay Box

(Instrument

 Panel)

Fuse &

Relay Box

(Glove Box)

Fuse &

Relay Box

(Glove Box)

SBF-5

ECM

40A

ECM

Main

Relay

Starter

Relay

ECM

ECM

Combination

Switch

Glow

Plug

ECM

0.5

BLU/

BLK

2

RED

0.5

BLK/

RED

3

BLK/

YEL

3

WHT/

BLK

2

BLK

J-9

Frame

2

ST

ON

ACC

OFF

B-67

3

B-67

Ignition

Switch

Fuse &

Relay Box

(Behind the Cab)

P-5

B-7

H/L

 Bracket

6

J/C-D

1

Battery

P-1

P-2

P-3

P-4

N6A6628E

0.5

YEL/

BLK

3

5

X-18

2

4

X-18

F-28

ECM

10A

8-106 CAB AND CHASSIS ELECTRICAL

4HK1-TC Engine (2)

ECM

TCM

30 BLK/RED

8 BLK

8 BLK

8 BLK

3 BLK/YEL

P-1

P-2

P-3

P-4

Battery

P-5

3

BLK/

WHT

3

WHT/

BLK

0.5

RED/WHT

0.5

RED/WHT

0.5

RED

0.5

WHT/

BLU

0.3

BLK/WHT

3

WHT/BLU 

3

WHT/BLU 

2L

SBF-8

ST

AR

TER

60A

SBF-2

KEY

40A

F-22

ST

AR

TER

10A

14

H-8

0.5

RED/

WHT

0.5

WHT/

BLU

0.5

WHT/

BLU

J-9

Frame

1

H-7

4

B-67

USW

JOINT

 3

2

BLK

0.5

BLK

14

J-191

B-425

46

Start cut

relay

control

Start switch

signal

38

H-5

16

Starter

cut

relay

control

Fuse &

Relay Box

(Glove Box)

F-28

ECM

10A

Fuse &

Relay Box

(Behind the Cab)

2

B-67

2

3

J/C-2

0.85

L

T

 GRN

0.5

L

T

 GRN

ECM

Main Relay

5

2

X-21

4

3

X-21

5

1

X-26

3

4

X-26

ST

ON

ACC

OFF

Ignition

Switch

N6A6629E

Starter

B

C

1

J-27

1

J-26

Fuse &

Relay Box

(Behind 

the Cab)

Starter

Relay

Fuse &

Relay Box

(Behind the Cab)

Fuse &

Relay Box

(Behind the Cab)

Starter Cut

Relay

CAB AND CHASSIS ELECTRICAL 8-107

4HK1-TC Engine (3)

F-16

METER

10A

SBF-8

ST

AR

TER

60A

SBF-3

GLOW

60A

SBF-1

MAIN

100A

 or 120A

18

10

B-51

B-51

0.5

BLK/

YEL

0.5

BLK/

YEL

0.5

WHT/

BLU

0.5

WHT/

BLU

0.5

WHT/

BLU

8

WHT/

BLK

0.5

BLK/

YEL

0.5

WHT/

RED

0.85

WHT/

RED

Charge

Relay

Glow Relay

8BLK

30BLK/RED

2L

B

Starter Relay

Charge

BS

2

1

1

J-1

J-2

J-1

15

H-5

L

ACG

J-26

Starter

P-1

P-2

P-3

P-4

P-5

0.85

WHT/

BLU

1.25

WHT/

BLU

3

WHT/

BLU

3

BLK/

YEL

3

WHT/

BLU

3

WHT/

BLU

Heater

& A/C 

Relay

Fuse & Relay Box

Fuse &

Relay Box

(Behind the Cab)

Fuse &

Relay Box

(Behind the Cab)

Instrument

Panel

Cluster

(IPC)

Fuse &

Relay Box

(Glove Box)

Fuse &

Relay Box

(Glove Box)

1

5

4

X-1

X-1

3

2

13

W/S-M

J/C-I

0.5

BLK/

YEL

N6A6630E

Battery

2

ST

ON

ACC

OFF

B-67

3

B-67

Ignition

Switch

1

H-7

SBF-2

KEY

40A