Isuzu N-Series. Service manual — part 1136
8-256 CAB AND CHASSIS ELECTRICAL
Front Passenger Seat Side Power Window Mo-
tor
Inspection
Before checking to see if the motor functions correctly,
be sure to check the circuit through the front passen-
ger’s switch connector
and the driver’s power win-
dow switch connector
.
If the motor does not operate smoothly, either the motor
or the circuit between the switch and the motor is defec-
tive.
1. Circuit inspection of the front passenger seat side
window
Disconnect the switch connector and apply battery
voltage to the harness side connector terminals to
check its function.
2. Circuit inspection of the driver seat side switch
Disconnect the switch connector and apply battery
voltage to the harness side connector terminals to
check its function.
3. Inspection of the front passenger window motor
Disconnect the motor connector and apply battery
voltage to the motor side connector terminals to
check its function.
Repair or replace the motor when the result of in-
spection is found abnormal.
Removal
Preparation:
Disconnect the battery ground cable.
1. Window Regulator Assembly
Refer to Section 2 for Window Regulator and
Glass.
2. Power Window Motor
Remove three screws.
Installation
To install, follow the removal steps in the reverse order.
D-7
D-3
D-7
Harness side
Connecting terminal
Direction of
3 (L/Y)
5 (BR/Y)
operation
DOWN
UP
N8A0243E
Harness side
D-3
Connecting terminal
Direction of
4 (G/Y)
5 (R/Y)
operation
DOWN
UP
+
+
N8A0244E
D-6
M
1
2
DOWN
UP
Terminal No.
Direction
of operation
N8A0245E
N8A0246E
CAB AND CHASSIS ELECTRICAL 8-257
Windshield Wiper and Washer
General Description
The circuit consists of the starter switch, windshield wiper & washer switch, wiper motor, washer motor and the inter-
mittent relay.
When the wiper & washer switch is turned on with starter switch on, the battery voltage is applied to the wiper motor
to activate the wiper.
The washer motor squirts glass cleaning fluid while the washer switch is being pushed. The intermittent relay is used
to control motion of the wiper.
Operation of Windshield Wiper Motor
(When wiper “LO” or “INT” position)
Notice:
Arrow marks indicate the direction of current.
N8A0250E
8-258 CAB AND CHASSIS ELECTRICAL
Parts Location
N8A5299E
CAB AND CHASSIS ELECTRICAL 8-259
Circuit Diagram
B-11
B-11
B-11
B-11
B-11
B-69
B-69
B-69
B-69
B-69
B-69
B-9
B-9
B-9
B-9
B-9
B-9
B-8
B-8
B-7
B
ST
ACC
ON
B-67
B-67
P-1
P-2
P-3
P-4
P-5
(24V MODEL)
2
3
8
3
6
7
4
2
B
PS
I
PM
W
E
B
P
4
5
2
3
LO
HI
1
3
8
7
4
6
1
P
OFF
I
H
W
L
1
2
HEADLIGHT BRACKET (LH)
3B
0.5B
0.5B(24V)
1.25B(12V)
0.5L/B
0.5BR/Y(24V)
0.85BR/Y(12V)
0.5L(24V)
1.25L(12V)
0.5L/B
0.5L/O(24V)
0.85L/O(12V)
0.5L/R(24V)
0.85L/R(12V)
0.5BR/W(24V)
0.85BR/W(12V)
0.5BR/R(24V)
1.25BR/R(12V)
WIPER, WASHER SWITCH
(COMBINATION SWITCH)
0.5L(24V)
0.5B
0.85L(12V)
0.5L(24V)
1.25L(12V)
0.5L(24V)
3L
1.25L(12V)
3B/Y
3W/L
3W/L
FL-1 100A or 120A
MAIN
FL-2 40A(24V)
50A(12V)
KEY SW
STARTER SWITCH
F-10 15A
WIPER, WASHER
WIPER MOTOR
WASHER MOTOR
0.5B
H-7
3W/B
1
RELAY; INTERMITTENT
FRAME
B-9
B-9
3
7
(WITHOUT RELAY; INTERMITTENT)
0.85L/R
0.85L/R
SHORT CIRCUIT CONNECTOR
2L
P-3
P-4
4JH1
FUSE BLOCK
X-11
X-11
X-11
X-11
RELAY
KEY ON
(24V)
(12V)
X-1
X-1
X-1
X-1
5
2
3
1
5
2
3
1
N8A5300E
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