IDX INFINITI QX4 2001 Factory Service Manual

System DescriptionNBEL0063WIPER OPERATIONNBEL0063S01Power Supply and GroundNBEL0063S0101With ignition switch in the ACC or ON position, power is supplied
Ithrough 10A fuse [No. 29, located in the fuse block (J/B)]
Ito rear wiper amp. terminal 6.
When the glass hatch switch is OPEN, ground is supplied
Ito rear wiper amp. terminal 3
Ithrough glass hatch switch terminal 1 and 2
Ithrough body grounds B11, B22 and D210.
Ground is supplied
Ito rear wiper amp. terminal 9
Ithrough body grounds B11, B22 and D210.
Low Speed Wiper OperationNBEL0063S0103When the rear wiper switch is turned ON, ground is supplied
Ito rear wiper amp. terminal 2
Ithrough combination switch terminals 22 and 24.
Ithrough body grounds E13 and E41
Then, power is supplied
Ithrough rear wiper amp. terminal 11
Ito rear wiper motor terminal 4.
Ground is supplied
Ito rear wiper motor terminal 3
Ithrough rear wiper amp. terminal 8.
With power and ground supplied, the wiper motor operates at low speed.
Auto Stop OperationNBEL0063S0104With 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
Ito rear wiper amp. terminal 10
Ithrough wiper motor terminals 7 and 8
Ithrough 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
Ithrough 10A fuse [No. 29, located in the fuse block (J/B)]
Ithrough rear wiper motor terminals 6 and 7 and
Ithrough rear wiper amp. terminals 10 and 8
Ito rear wiper motor terminal 3.
Ground is supplied
Ito rear wiper motor 4
Ithrough rear wiper amp. terminal 11.
Then wiper motor turns the other way and wiper arm moves once until wiper arm reaches stopper.
Intermittent OperationNBEL0063S0105The 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
Ito wiper amp. terminal 4
Ithrough rear combination switch terminal 21 and 24
Ithrough body grounds E13 and E41.
Then, power is supplied
Ithrough rear wiper amp. terminal 11
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REAR WIPER AND WASHER
System Description
EL-141

Wiring Diagram Ð WIP/R ÐNBEL0065
MEL809L
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REAR WIPER AND WASHER
Wiring Diagram Ð WIP/R Ð
EL-143

Trouble DiagnosesNBEL0066REAR WIPER AMP. INSPECTION TABLENBEL0066S01(Data are reference values.)
Terminal No. Item Condition Voltage
(Approximate value)
1 Washer switch
Rear wiper switch WASH Less than 1V
OFF, ON or INT Battery voltage
2 Low switch
Rear wiper switch ON Less than 1V
OFF or INT Battery voltage
3 Glass hatch switch
Glass hatch Open Less than 1V
Closed Battery voltage
4 Intermittent switch
Rear wiper switch INT Less than 1V
OFF, ON or WASH Battery voltage
6 Power supply (ACC)
Ð Battery voltage
7 Washer motor
Rear washer switch WASH Battery voltage
OFF, ON or INT Less than 1V
8 Rear wiper motor
Wiper is moving (except final drive) Less than 1V
Wiper stop Less than 1V
During wiper final drive Battery voltage
9 Ground Ð Ð
10 Auto stop switch
Rear wiper switch
should be at ªINTº to
inspect the value for
wiper movement.Wiper is moving Less than 1V
Wiper stop Battery voltage
11 Rear wiper motor
Wiper is moving (except final drive) Battery voltage
Wiper stop Battery voltage
During wiper final drive Less than 1V
NOTE:
Power to the rear wiper amp. will be interrupted when the rear glass hatch is opened. In that case, conduct
the inspection of the rear wiper amp. with the rear glass hatch closed, unless otherwise indicated.
MEL066G
Removal and InstallationNBEL0067WIPER ARMSNBEL0067S011. Prior to wiper arm installation, turn on wiper switch to operate
wiper motor and then turn it ªOFFº (Auto Stop).
2. Install wiper arm to portion A as in figure below and tighten
wiper arm nut to specification.
3. Then, set wiper arm to portion B.
: 13 - 18 N´m (1.3 - 1.8 kg-m,9-13ft-lb)
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REAR WIPER AND WASHER
Trouble Diagnoses
EL-145

Wiring Diagram Ð HORN ÐNBEL0071
MEL811L
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HORN
Wiring Diagram Ð HORN Ð
EL-147

MEL813L
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CIGARETTE LIGHTER
Wiring Diagram Ð CIGAR Ð (Cont'd)
EL-149

Component Parts and Harness Connector
Location
NBEL0072
SEL465X
System DescriptionNBEL0073The rear window defogger system is controlled by the smart entrance control unit. The rear window defogger
operates only for approximately 15 minutes.
Power is supplied at all times
Ito rear window defogger relay terminal 3
Ithrough 20A fuse (No. 56, located in the fuse and fusible link box) and
Ito rear window defogger relay terminal 6
Ithrough 20A fuse (No. 57, located in the fuse and fusible link box)
Ito smart entrance control unit terminal 10
Ithrough 7.5A [No. 24, located in fuse block (J/B)]
With the ignition switch in the ON or START position, power is supplied
Ithrough 7.5A fuse [No. 11, located in the fuse block (J/B)]
Ito the rear window defogger relay terminal 1, and
Ito smart entrance control unit terminal 33.
Ground is supplied
Ito terminal 1 of the rear window defogger switch
Ithrough body grounds M4, M66 and M147(with navigation system),
Ito terminal 32 of the A/C auto amp.
Ithrough body grounds M4, M66 and M147 (without navigation system), or
Ito smart entrance control unit terminal 16
Ithrough body grounds M77 and M111.
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REAR WINDOW DEFOGGER
Component Parts and Harness Connector Location
EL-151

Wiring Diagram Ð DEF ÐNBEL0074
MEL815L
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REAR WINDOW DEFOGGER
Wiring Diagram Ð DEF Ð
EL-153

Trouble DiagnosesNBEL0075DIAGNOSTIC PROCEDURENBEL0075S01SYMPTOM: Rear window defogger does not activate, or does
not go off after activating.
1 CHECK REAR WINDOW DEFOGGER OUTPUT SIGNAL
1. Turn ignition switch to ON position.
2. Check voltage between smart entrance control unit harness terminal 2 and ground.
SEL384X
OK or NG
OK©Check the following.
IRear window defogger relay
(Refer to EL-157.)
IRear window defogger circuit
IRear window defogger filament
(Refer to EL-157.)
NG©GO TO 2.
2 CHECK DEFOGGER RELAY COIL SIDE CIRCUIT
1. Disconnect smart entrance control unit connector.
2. Turn ignition switch to ON position.
3. Check voltage between smart entrance control unit terminal 2 and ground.
SEL385X
OK or NG
OK©GO TO 3.
NG©Check the following.
I7.5A fuse [No. 11, located in the fuse block (J/B)]
IRear window defogger relay
IHarness for open or short between rear window defogger relay and smart entrance
control unit
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REAR WINDOW DEFOGGER
Trouble Diagnoses
EL-155

5 CHECK SMART ENTRANCE CONTROL UNIT GROUND CIRCUIT
Check continuity between smart entrance control unit terminal 16 and ground.
SEL388X
OK or NG
OK©Replace smart entrance control unit.
NG©Repair harness or connectors.
SEC202B
Electrical Components InspectionNBEL0076REAR WINDOW DEFOGGER RELAYNBEL0076S01Check continuity between terminals 3 and 5, 6 and 7.
Condition Continuity
12V direct current supply between ter-
minals 1 and 2Ye s
No current supply No
SEL430TB
REAR WINDOW DEFOGGER SWITCHNBEL0076S02Check continuity between terminals when rear window defogger
switch is pushed and released.
Terminals Condition Continuity
1-2Rear window defogger
switch is pushedYe s
Rear window defogger
switch is releasedNo
SEL263
Filament CheckNBEL00771. Attach probe circuit tester (in volt range) to middle portion of
each filament.
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REAR WINDOW DEFOGGER
Trouble Diagnoses (Cont'd)
EL-157

SEL012D
4. After repair has been completed, check repaired wire for con-
tinuity. This check should be conducted 10 minutes after silver
composition is deposited.
Do not touch repaired area while test is being conducted.
SEL013D
5. Apply a constant stream of hot air directly to the repaired area
for approximately 20 minutes with a heat gun. A minimum dis-
tance of 3 cm (1.2 in) should be kept between repaired area
and hot air outlet. If a heat gun is not available, let the repaired
area dry for 24 hours.
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REAR WINDOW DEFOGGER
Filament Repair (Cont'd)
EL-159