Isuzu N-Series. Manual - part 1066

CAB AND CHASSIS ELECTRICAL 8-369

Parts Location

RELAY BOX ASM (No. 2)

FUSE BOX ASM
F-5,F-13,
F-16, F-17,
F-22

B-431
RESISTOR 2

B-387
RESISTOR 1

B-79
DATA LINK CONNECTOR

B-66
STOPLIGHT SW

B-51, B-53 METER

B-67 STARTER SW

B-1

B-7

H-15

P-5

P-1

P-2

BATTERY

P-3

P-4

F-28 FUSE
SBF1, SBF2, SBF5, SBF7, SBF8 FUSIBLE LINK
X-18 ECM MAIN RELAY
X-19 GEAR SHIFTER RELAY
X-21 STARTER RELAY
X-26 STARTER CUT RELAY

RELAY BOX ASM

H-10

H-12

H-17

H-4, H-5, H-6,
H-7, H-8

RELAY BOX ASM (No. 1)

N-7 DOOR SW (RH)

N-19 SELECT SW

N-17 EMERGENCY SW

N-18 EMERGENCY SHIFT SW

B-417 PTO SWITCH

STARTER

SW

L-2 DOME LIGHT

X-14 SMOOTHER
EMERGENCY RELAY

H-3

X-5 SMOOTHER MAIN RELAY
X-32 DIODE

B-105 RESET SW

J-9

B-106 ADJUST SW

B-86
DOME LIGHT SW

B-425, B-426,
B-427, B-428
TCM

H-118

N-2
DOOR SW (LH)

H-119

H-118

H-119

J-177 EHCU

J-191 ECM

J-237
SOLENOID & ATF TEMPERATURE SENSOR

J-50
NEUTRAL SW

J-223
SELECT STROKE SENSOR

J-234
SELECT SOLENOID

J-232
TURBINE SPEED SENSOR

J-236
SHIFT SOLENOID 2, 4, R

J-235
SHIFT SOLENOID 1, 3, 5

J-139
INPUT SPEED SENSOR

J-142
SHIFT STROKE SENSOR

N7A2053E

8-370 CAB AND CHASSIS ELECTRICAL

Circuit Diagram

8WHT/BLK

8BLK

2L

J-26

B

SBF-8

60A

SBF-4

40A

Battery

P-1

P-2

P-3

P-4

P-5

ST

AR

TER

Starter

HEAD

LAMP

SBF-5

ECM

40A

Fuse & Relay Box

(Behind the Cab)

SBF-3

60A

GLOW

SBF-2

40A

KEY

 SW

SBF-9

40A

ABS

SBF-7 

60A

NEES

SBF-6

60A

CERAMIC

HEA

TER

SBF-1

MAIN

100A

 or

120A

3

WHT/

BLU

F-21

10A

F-9

3

BLK/

YEL

3BLK/YEL

F-16

10A

F-17

NEES (IG)

10A

F-18

10A

Fuse &

Relay Box

(Glove Box)

ENG. (IG)

10A

ABS (IG)

METER

SRS

F-22

10A

ST

AR

TER

3

WHT/

BLU

5

WHT/

BLK

5

WHT/

BLK

8

WHT/

BLK

1.25

RED

0.5BLU/BLK

0.5

BLK

3

WHT/

BLK

J-9

Frame

3

WHT/

GRN

2

RED

Main

Relay 

4

2

5

3

X-18

X-18

F-28

ECM

10A

Fuse &

Relay Box

(Cab Side)

ECM

ECM

Fuse & Relay Box

(Behind the Cab)

Fuse &

Relay Box

(Glove Box)

F-4

15A

AUDIO(B)

DOOR LOCK

F-13

NEES (B)

10A

F-5

F-6

10A

POWER

WINDOW

10A

ST

OP

LIGHT

W/S-I/-J

W/S-H

W/S-H

3BLK/YEL

ON Relay

H-6

1

Ignition

Switch

2

ST

ON

ACC

OFF

B-67

3

4

B-67

USW JOINT3

0.5BLK

N7A2131E

CAB AND CHASSIS ELECTRICAL 8-371

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

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)

Fuse &

Relay Box

(Behind the Cab)

Fuse &

Relay Box

(Behind the Cab)

2

3

J/C-2

0.85

L

T

 GRN

0.5

L

T

 GRN

ECM

Main Relay

5

2

X-21

Starter

Relay

4

3

X-21

5

1

X-26

Starter Cut

Relay

3

4

X-26

ST

ON

ACC

OFF

Ignition

Switch

Starter

B

C

1

J-27

1

J-26

F-16

10A

METER

0.5

BLK/

YEL

0.5

BLK/

YEL

0.5

BLK/

YEL

14

H-12

Emergency

Switch

5

1

N-17

N-17

W/S-M

0.3

BLU/

RED

0.3

BLU/

RED

0.3

BLK

0.3

BLK

W/S-E

0.3

BLK

B-7

Headlight

Bracket

Smoother

Emergency

Relay

1

X-14

3

Relay Box

(Instrument Panel)

0.3BLU/RED

4

B-428

14

4

H-12

Emergency

switch

signal

1

H-7

2

B-67

2

5

X-14

N7A2144E

8-372 CAB AND CHASSIS ELECTRICAL

N7A2132E

0.5

WHT/

VIO

0.5

GRN/

WHT

1.25

GRN/

WHT

1.25

GRN/

WHT

TCM

Fuse & Relay Box

(Glove Box)

15

B-425

F-13

NEES(B)

10A

1.25

WHT/

ORN

3

Smoother

Main Relay

1

5

2

X-5

X-5

3

Main

relay

control

Battery voltage

Relay Box

(Instrument Panel)

0.5

BLK/

ORN

0.5

BLK/

ORN

0.5

BLK/

ORN

2

B-426

1

Ignition voltage

F-17

NEES(IG)

10A