Isuzu N-Series. Manual - part 649

6E-18    Engine Control System (4HK1) 

CAN

2

1

B-431

7

8

H-8

B-387

Resistor 1

2

1

1

2

TCM

3

2

B-427

10

5

H-15

14

9

15

14

J-177

27

26

5

6

H-8

0.5
BLU/
WHT

0.5

BLU

0.5

BLU

/

WHT

0.5
BLU

0.5

BLU

0.5
BLU/
WHT

0.5

BLU

0.5
BLU/
WHT

0.5

BLU

0.5
BLU/
WHT

0.5

BLU

0.5
BLU/
WHT

0.5

BLU

0.5
BLU/
WHT

0.5

BLU

0.5
BLU/
WHT

0.5
BLU/WHT

0.5 BLU

0.5
BLU/WHT

0.5 BLU

0.5
BLU/WHT

0.5 BLU

0.5
BLU/WHT

0.5 BLU

0.5
BLU/WHT

0.5 BLU

0.5
BLU/WHT

0.5 BLU

0.5
BLU/WHT

0.5 BLU

EHCU

37

18

J-191

CAN
high

CAN
low

CAN
high

CAN
low

DRM

ECM

Resistor 2

CAN
high

CAN
low

3

J/C-F

4

5

6

J/C-F

Without  ABS

2

1

3

             J/C-R 

5

4

6

J/C-R

CAN
high

CAN
low

N6A6641E

 Engine Control System (4HK1)    6E-19

Ground Distributions

N7A2114E

0.5 BLK

2 BLK

0.3 BLK

PT

O Switch (B-417-3)

Smoother Emergency Relay (X-14-2)

Smoother Emergency Relay (X-14-5)

PT

O Switch

DLC (B-79-4)

Change Lever Unit

Power

Distribution

Battery

B-7

0.5 BLK

Shift Position Indicator Back Lamp

15

1.25

BLK

0.3 BLK

3

BLK

P-5

0.5 BLK

Headlight Bracket

2

BLK

3

BLK

Emergency Shift Switch

0.5 BLK

0.5 BLK

0.5 BLK

B-1

Frame

2 BLK

DLC (B-79-5)

TCM (B-426-8)

TCM (B-426-17)

TCM (B-426-12)

TCM (B-426-4)

0.5 BLK

0.5 BLK

1.25 BLK

1.25 BLK

0.5 BLK

0.5 BLK

TCM (B-428-15)

0.5 BLK

Starter Cut Relay

2

BLK

2

BLK

J-9

Frame

TCM (B-425-2)

TCM (B-425-7)

1-3-5 Shift Solenoid

2-4-6-R Shift Solenoid

Select Solenoid

1.25 BLK

1.25 BLK

1.25 BLK

2 BLK

2 BLK

2 BLK

13

1

1

6

7

8

TCM (B-428-7)

1.25 BLK

TCM (B-425-6)

1.25 BLK

TCM (B-425-1)

1.25 BLK

1.25 BLK

1.25 BLK

1.25 BLK

1.25 BLK

1.25 BLK

H-1

19

H-1

19

H-1

18

H-17

H-17

H-17

7

1

W/S-B

J/C-D

W/S-E

W/S-D

W/S-C

2

BLK

USW

JOINT1

USW JOINT2

0.5 BLK

Heater Relay

Heater & 

A/C Relay

Key On Relay

B-7

0.5 BLK

Engine W

arm up Switch (B-31-1)

0.5 BLK

0.5 BLK

Headlight Bracket

2

BLK

3

BLK

V

ehicle Speed Sensor (VSS)

Meter (B-55-7)

0.5 BLK

0.5 BLK

0.5 BLK

ECM (J-191-4)

HBB Level Switch

0.3 YEL/RED

Meter (B-55-10)

0.3

YEL/

RED

0.5 BLK

ECM (J-191-3)

ECM (J-191-1)

ECM (J-191-62)

ECM (J-191-43)

ECM (J-191-81)

1.25 BLK

1.25 BLK

1.25 BLK

0.75 BLK

0.75 BLK

0.5 BLK

0.5 BLK

ECM Main Relay

Condenser Fan Relay

0.85 BLK

2

BLK

Marker Light Relay

0.5 BLK

2

BLK

Fuel

T

ank

Unit

0.3

YEL/

RED

H-5

19

PT

O Switch

Engine W

arm up Switch (B-31-5)

3

BLK

3

BLK

3

BLK

2

BLK

0.85

BLK

0.5 BLK

6

1

USW JOINT3

W/S-F

W/S-E

J/C-D

6E-20    Engine Control System (4HK1) 

Component Locator

Engine Controls Component Views

Accelerator Pedal Position (APP) Sensor

Legend

1. Accelerator Pedal Position (APP) Sensor

Assembly

2. LHD Model
3. RHD Model

 

N6A6567E

1

1

3

2

 Engine Control System (4HK1)    6E-21

Barometric Pressure (BARO) Sensor

Legend

1. Barometric Pressure (BARO) Sensor

 

1

N6A6579E