Isuzu N-Series. Service 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
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