Infiniti QX4 (R50). Manual — part 130
Trouble Diagnoses
=NBBT0018
DIAGNOSTIC TABLE
NBBT0018S01
NOTE:
For diagnosing electric problem, refer to EL-174 “POWER SUN-
ROOF” for details.
Check items (Components)
Wind deflector
Adjustment
Drain hoses
Weatherstrip
Link and wire
assembly
Reference page
Symptom
Excessive wind
noise
1
2
3
Water leaks
1
2
3
Sunroof rattles
1
4
2
3
Excessive opera-
tion noise
1
2
3
The numbers in this table mean checking order.
SBT331
WIND DEFLECTOR
NBBT0018S02
1.
Open lid.
2.
Check visually for proper installation.
3.
Check to ensure a proper amount of petroleum jelly has been
applied to wind deflector connection points; apply if necessary.
SBT332
4.
Check that wind deflector is properly retracted by hand. If it is
not, remove and visually check condition. (Refer to removal
procedures, BT-45.) If wind deflector is damaged, replace with
new one. If wind deflector is not damaged, re-install properly.
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
HA
SC
EL
IDX
SUNROOF
Trouble Diagnoses
BT-49
ADJUSTMENT
NBBT0018S03
SBT723
If any gap or height difference between glass lid and roof is found,
check glass lid fit and adjust as follows:
Gap Adjustment
NBBT0018S0301
1.
Open shade assembly.
2.
Tilt glass lid up then remove side trim.
3.
Loosen glass lid securing nuts (3 each on left and right sides),
then tilt glass lid down.
4.
Adjust glass lid from outside of vehicle so it resembles “A-A”
as shown in the figure above.
5.
Tilt glass lid up and down until it is adjusted to “B-B” as shown
in the figure above.
6.
After adjusting glass lid, tilt glass lid up and tighten nuts.
7.
Tilt glass lid up and down several times to check that it moves
smoothly.
Height Difference Adjustment
NBBT0018S0302
1.
Tilt glass lid up and down.
2.
Check height difference between roof panel and glass lid to
see if it is as “A-A” as shown in the figure above.
3.
If necessary, adjust it by using one of following procedures.
I
Adjust by adding or removing adjustment shim(s) between
glass lid and link assembly.
I
If glass lid protrudes above roof panel, add shim(s) or plain
washer(s) at sunroof mounting bracket or stud bolt locations to
adjust sunroof installation as required.
SUNROOF
Trouble Diagnoses (Cont’d)
BT-50
DRAIN HOSES
NBBT0018S04
SBT376
SBT333
1.
Remove headlining to access drain hose connections. (Refer
to “Removal and Installation” in “ROOF TRIM”, BT-32, for
detail.)
2.
Check
visually
for
proper
connections,
damage
or
deterioration.
(The figure shows only the front side.)
SBT377
3.
If leakage occurs around luggage room, remove luggage room
side trim and check connecting area. Check for proper
connection, damage or tear.
4.
Remove drain hoses and check visually for any damage,
cracks, or deterioration.
5.
Pour water into drain hoses and find damaged portion.
I
If any damaged portion is found at each step, replace the
damaged part.
WEATHERSTRIP
NBBT0018S05
I
In the case of leakage around glass lid, close glass lid and pour
water over glass lid to find damaged or gap portion.
1.
Remove glass lid assembly. (Refer to removal procedures,
BT-45, for details.)
2.
Visually check weatherstrip for proper installation. If a gap
exists between glass lid and weatherstrip, check for sufficient
amount of butyl seal. If required, remove weatherstrip and
apply butyl seal.
Refer to “EXTERIOR” (BT-35), for details.
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
HA
SC
EL
IDX
SUNROOF
Trouble Diagnoses (Cont’d)
BT-51
3.
Check weatherstrip visually for any damage, deterioration, or
flattening.
I
If any damage is found, replace weatherstrip.
CAUTION:
Do not remove weatherstrip except when replacing, or filling
up butyl seal.
LINK AND WIRE ASSEMBLY
NBBT0018S06
NOTE:
Before replacing a suspect part, carefully ensure it is the source of
noise being experienced.
1.
Check link to determine if coating film has peeled off to such
an extent that substrate is visible. Check also to determine if
link is the source of noise. If it is, replace it.
2.
Visually check to determine if a sufficient amount of petroleum
jelly has been applied to wire or rail groove. If not, add petro-
leum jelly as required.
3.
Check wire for any damage or deterioration. If any damage is
found, remove rear guide (refer to removal procedures, BT-45
for details), then replace wire.
SUNROOF
Trouble Diagnoses (Cont’d)
BT-52
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