Infiniti QX4 (R50). Manual — part 331
System Description
NBEL0063
WIPER OPERATION
NBEL0063S01
Power Supply and Ground
NBEL0063S0101
With ignition switch in the ACC or ON position, power is supplied
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through 10A fuse [No. 29, located in the fuse block (J/B)]
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to rear wiper amp. terminal 6.
When the glass hatch switch is OPEN, ground is supplied
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to rear wiper amp. terminal 3
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through glass hatch switch terminal 1 and 2
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through body grounds B11, B22 and D210.
Ground is supplied
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to rear wiper amp. terminal 9
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through body grounds B11, B22 and D210.
Low Speed Wiper Operation
NBEL0063S0103
When the rear wiper switch is turned ON, ground is supplied
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to rear wiper amp. terminal 2
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through combination switch terminals 22 and 24.
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through body grounds E13 and E41
Then, power is supplied
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through rear wiper amp. terminal 11
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to rear wiper motor terminal 4.
Ground is supplied
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to rear wiper motor terminal 3
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through rear wiper amp. terminal 8.
With power and ground supplied, the wiper motor operates at low speed.
Auto Stop Operation
NBEL0063S0104
With rear wiper switch turned OFF, rear wiper motor will continue to operate until wiper arm reaches rear wiper
stopper.
When rear wiper arm is not located at rear wiper stopper with wiper switch OFF, ground is supplied
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to rear wiper amp. terminal 10
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through wiper motor terminals 7 and 8
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through body grounds B11, B22 and D210.
Then rear wiper motor continues to operate until wiper arm reaches bottom.
When wiper arm reaches bottom, power is supplied
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through 10A fuse [No. 29, located in the fuse block (J/B)]
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through rear wiper motor terminals 6 and 7 and
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through rear wiper amp. terminals 10 and 8
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to rear wiper motor terminal 3.
Ground is supplied
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to rear wiper motor 4
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through rear wiper amp. terminal 11.
Then wiper motor turns the other way and wiper arm moves once until wiper arm reaches stopper.
Intermittent Operation
NBEL0063S0105
The rear wiper motor operates the wiper arms at low speed approximately every 7 seconds. This feature is
controlled by the wiper amp.
When the wiper switch is placed in the INT position, ground is supplied
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to wiper amp. terminal 4
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through rear combination switch terminal 21 and 24
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through body grounds E13 and E41.
Then, power is supplied
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through rear wiper amp. terminal 11
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
REAR WIPER AND WASHER
System Description
EL-141
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to rear wiper motor terminal 4.
Ground is supplied
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to rear wiper motor terminal 3
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through rear wiper amp. terminal 8.
With power and ground supplied, rear wiper operates at low speed intermittent.
WIPER OPERATION PROHIBIT CONTROL
NBEL0063S03
When glass hatch is open with back door key cylinder while rear wiper is operated, wiper operation is stopped.
(Wiper operation prohibit control)
When glass hatch is closed and rear wiper switch turns from OFF and then rear wiper switch is turned to ON,
wiper operation prohibit control is canceled.
WASHER OPERATION
NBEL0063S02
When the rear wiper switch is turned to WASH position, ground is supplied
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to rear wiper amp. terminal 1
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through terminals 23 and 24
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through body grounds E13 and E41.
Then, power is supplied
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through rear wiper amp. terminal 7
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to rear washer motor terminal 2.
Ground is supplied
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to rear washer motor terminal 1
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through body grounds E13 and E41.
With power and ground supplied, the rear washer motor operates.
When the rear wiper switch is turned to WASH position for one second or more, the rear wiper motor oper-
ates at low speed for approximately 3 seconds after the rear wiper switch is released. This feature is controlled
by the rear wiper amp. in the same manner as the low speed operation.
REAR WIPER AND WASHER
System Description (Cont’d)
EL-142
Wiring Diagram — WIP/R —
NBEL0065
MEL809L
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
REAR WIPER AND WASHER
Wiring Diagram — WIP/R —
EL-143
MEL810L
REAR WIPER AND WASHER
Wiring Diagram — WIP/R — (Cont’d)
EL-144
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