Nissan Frontier D22. Manual — part 764
GW-36
REAR WINDOW DEFOGGER
3.
CHECK REAR WINDOW DEFOGGER SWITCH INPUT SIGNAL
Check continuity between smart entrance control unit harness connector M110 terminal 14 (G/B) and ground.
OK or NG
OK
>> GO TO 4.
NG
>> Check the following.
●
Rear window defogger switch (within air control)
Refer to
GW-37, "REAR WINDOW DEFOGGER SWITCH"
.
●
Harness for open or short between smart entrance control unit and air control (rear window
defogger switch)
●
Air control (rear window defogger switch) ground circuit
4.
CHECK IGNITION INPUT SIGNAL
Check voltage between smart entrance control unit harness connector M111 terminal 27 (G/W) and ground.
OK or NG
OK
>> GO TO 5.
NG
>> Check the following.
●
10A fuse [No. 5, located in the fuse block (J/B)]
●
Harness for open or short between smart entrance control unit and fuse
LEL015A
LEL016A
REAR WINDOW DEFOGGER
GW-37
C
D
E
F
G
H
J
K
L
M
A
B
GW
5.
CHECK CONTROL UNIT GROUND CIRCUIT
Check continuity between smart entrance control unit harness connector M111 terminal 43 (B) and ground,
and connector M112 terminal 64 (B) and ground.
OK or NG
OK
>> Replace smart entrance control unit.
NG
>> Repair harness or connectors.
Electrical Components Inspection
EIS002D4
REAR WINDOW DEFOGGER RELAY
Check continuity between terminals 3 and 5.
REAR WINDOW DEFOGGER SWITCH
Check continuity between terminals when rear window defogger
switch is pushed and released.
WEL484A
Condition
Continuity
12V direct current supply between termi-
nals 1 and 2
Yes
No current supply
No
SEF090M
Terminals
Condition
Continuity
(+)
(–)
Connector
Terminal
Connector
Terminal
M95
5
M95
8
Rear window
defogger switch is
pushed
Yes
Rear window
defogger switch is
released
No
WEL831A
GW-38
REAR WINDOW DEFOGGER
Filament Check
EIS002D5
1.
Attach probe circuit tester (in volt range) to middle portion of
each filament.
●
When measuring voltage, wrap tin foil around the top of
the negative probe. Then press the foil against the wire
with your finger.
2.
If a filament is burned out, circuit tester registers 0 or 12 volts.
SEL263
SEL122R
SEL265
REAR WINDOW DEFOGGER
GW-39
C
D
E
F
G
H
J
K
L
M
A
B
GW
3.
To locate burned out point, move probe to left and right along fil-
ament. Test needle will swing abruptly when probe passes the
point.
Filament Repair
EIS002D6
REPAIR EQUIPMENT
1.
Conductive silver composition (Dupont No. 4817 or equivalent)
2.
Ruler 30 cm (11.8 in) long
3.
Drawing pen
4.
Heat gun
5.
Alcohol
6.
Cloth
REPAIRING PROCEDURE
1.
Wipe broken heat wire and its surrounding area clean with a
cloth dampened in alcohol.
2.
Apply a small amount of conductive silver composition to tip of
drawing pen.
Shake silver composition container before use.
3.
Place ruler on glass along broken line. Deposit conductive silver
composition on break with drawing pen. Slightly overlap existing
heat wire on both sides [preferably 5 mm (0.20 in)] of the break.
4.
After repair has been completed, check repaired wire for conti-
nuity. This check should be conducted 10 minutes after silver
composition is deposited.
Do not touch repaired area while test is being conducted.
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.
SEL266
BE540
SEL012D
SEL013D
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