Isuzu N-Series. Manual - part 1163

8-364 CAB AND CHASSIS ELECTRICAL

H-5

H-7

Starter Switch

Refer to “START AND CHARGING” in this section.

Neutral Switch

Refer to “START AND CHARGING” in this section.

4WD Indicator Light

Refer to “METER AND WARNING/INDICATOR LIGHT”
in this section.

4WD Switch

Inspection
Check the continuity between the connector terminals
while operating the switch.
Replace the switch when the result of inspection is
found abnormal.

Vacuum Switching Valve: Transfer Control (for
2WD)

Inspection
Connect the vacuum switching valve connector terminal
No. 1 to the battery (+) terminal and terminal No. 3 to the
(

−) terminal and then check the continuity among each

port.

1

2

3

7

8

9

13

14 15

19

20 21

25

26 27

31

32 33

34

35

36

37

4

5

6

10

11 12

16

17 18

22

23 24

28

29 30

38

39 40

6

5

4

12

11 10

18

17 16

24

23 22

30

29 28

40

39 38

3

2

1

9

8

7

15

14 13

21

20 19

27

26 25

33

32 31

34

35

36

37

N8A5488E

1

2

1

2

1 2 3 4

5 6 7 8

9 10 11 12 13

14 15 16 17 18

2

1

2

1

4 3 2 1

8 7 6 5

13 12 11 10 9

18 17 16 15 14

H - 6

H - 7

H - 8

N8A5489E

N8A5444E

N8A5445E

CAB AND CHASSIS ELECTRICAL 8-365

Vacuum Switching Valve: Transfer Control (for
4WD)

Inspection
Connect the vacuum switching valve connector terminal
No. 2 to the battery (+) terminal and terminal No. 4 to the
(

−) terminal and then check the continuity among each

port.

4WD Detective Switch

Inspection of The 4WD Warning Light Circuit

1. Disconnect the 4WD switch connectors.
2. Connect the harness side connector terminals.
3. Check to see if the indicator light comes on with the

starter switch “ON”.
Check the bulb or harness when the result of in-
spection is found abnormal.

Inspection

1. Shift the transfer lever to the 4H (4L) position.
2. Check to see if there is continuity between the

4WD switch connectors.
Replace the switch when the result of the inspec-
tion is found abnormal.

N8A5446E

N8A5447E

N8A5448E

8-366 CAB AND CHASSIS ELECTRICAL

Keyless Entry System

Keyless Entry Control Unit

The unit receives a LOCK or UNLOCK signal from the
remote control unit. This signal is conveyed to the driv-
er’s door lock switch and the door lock actuator(s) on the
other door(s).

1. Remote control code registration

• A single code is registered at a time.
• Up to 3 codes can be registered and stored.
• If a 4th code is registered, the oldest existing

code is automatically erased (overwritten).

The remote control unit is built-in to the ignition key.

Connector for Antenna

N8A5449E

N8A5452E

Lock button

Unlock button

N8A5450E

CAB AND CHASSIS ELECTRICAL 8-367

2. Timer lock

The doors will automatically relock 30 seconds af-
ter being unlocked with the remote control unit.
A second or more may elapse between lock and
unlock operation when the LOCK and UNLOCK
buttons are pressed in quick succession.

Diagnostic Functions

When the unit is in diagnostic mode, the door locks operate as specified below to indicate normal operation or a spe-
cific problem.

Door switch

Push (OFF)

Automatic 

return (ON)

N8A5451E

N8A5453E