Infiniti I30 (A33). Manual — part 384

3

CHECK REAR WINDOW DEFOGGER SWITCH INPUT SIGNAL

With CONSULT-II

Select “REAR DEF SW” in “DATA MONITOR” mode with CONSULT-II.

SEL352W

Without CONSULT-II

Check continuity between smart entrance control unit harness connector M143 terminal 14 (G/W) and ground.

SEL999X

OK or NG

OK

©

GO TO 4.

NG

©

Check the following.

I

Rear window defogger switch
(Refer to EL-206.)

I

Harness for open or short between smart entrance control unit and rear window defog-
ger switch

I

Rear window defogger switch ground circuit

4

CHECK POWER SUPPLY AND IGNITION INPUT SIGNAL

Check voltage between smart entrance control unit terminals 27 (M144, G), 49 (M145, R/B) and ground.

SEL001Y

OK or NG

OK

©

GO TO 5.

NG

©

Check the following.

I

10A fuse [No. 10 or No. 13, located in the fuse block (J/B)]

I

Harness for open or short between smart entrance control unit and fuse

GI

MA

EM

LC

EC

FE

AT

AX

SU

BR

ST

RS

BT

HA

SC

IDX

REAR WINDOW DEFOGGER

Trouble Diagnoses (Cont’d)

EL-205

5

CHECK CONTROL UNIT GROUND CIRCUIT

Check continuity between smart entrance control unit harness connector M144 terminal 43 (B), M145 terminal 64 (B) and
ground.

SEL002Y

Yes

©

Replace smart entrance control unit.

No

©

Repair harness or connectors.

SEC202B

Electrical Components Inspection

NHEL0076

REAR WINDOW DEFOGGER RELAY

NHEL0076S01

Check continuity between terminals 3 and 5, 6 and 7.

Condition

Continuity

12V direct current supply between ter-
minals 1 and 2

Yes

No current supply

No

SEL646W

REAR WINDOW DEFOGGER SWITCH

NHEL0076S02

Check continuity between terminals when rear window defogger
switch is pushed and released.

Terminals

Condition

Continuity

31 - 32

Rear window defogger
switch is pushed.

Yes

Rear window defogger
switch is released.

No

REAR WINDOW DEFOGGER

Trouble Diagnoses (Cont’d)

EL-206

SEL263

Filament Check

=NHEL0077

1.

Attach probe circuit tester (in volt range) to middle portion of
each filament.

SEL122R

I

When measuring voltage, wrap tin foil around the top of
the negative probe. Then press the foil against the wire
with your finger.

SEL265

2.

If a filament is burned out, circuit tester registers 0 or 12 volts.

SEL266

3.

To locate burned out point, move probe to left and right along
filament. Test needle will swing abruptly when probe passes
the point.

GI

MA

EM

LC

EC

FE

AT

AX

SU

BR

ST

RS

BT

HA

SC

IDX

REAR WINDOW DEFOGGER

Filament Check

EL-207

Filament Repair

NHEL0078

REPAIR EQUIPMENT

NHEL0078S01

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

BE540

REPAIRING PROCEDURE

NHEL0078S02

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 sil-
ver composition on break with drawing pen. Slightly overlap
existing heat wire on both sides [preferably 5 mm (0.20 in)] of
the break.

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.

REAR WINDOW DEFOGGER

Filament Repair

EL-208