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FAILURE DIAGNOSTIC LIST
14
-10
3T
NV88F
Service Manual
Failure Diagnostic List
Cooling
water sy
stem
Radiator super co
oled
Th
ermost
at rep
lacemen
t
.
Insufficient radiator cooling
Th
ermost
at rep
lacemen
t
or
c
h
e
c
k
fo
r f
a
n
be
lt
l
o
o
s
e
or
.
Insufficient co
oling wate
r quantity
W
ate
r l
eak i
nspecti
on
of
cooli
ng
wate
r
syst
em
.
Water
jack
et cr
acks
Re
pair or re
placemen
t
.
Fan b
elt elongation
A
djust
ment
o
f bel
t te
nsion
.
Thermostat fault
In
spe
c
ti
on
or
re
placeme
n
t
.
Lubricant system
Incorre
ct lubricant
Usag
e
o
f corre
ct
lubri
c
a
nt
.
Lubricant system leaka
ge
Re
pair
.
Insufficient discharge
rate of trochoid
pump
Inspe
c
ti
on
an
d r
epai
r
.
Lubricant filter clogged
Cl
eanin
g o
r
repla
c
e
m
ent
.
Regulator valve
fault
Cl
eanin
g
, ad
justme
nt or re
placemen
t
.
Insufficient lu
bricant q
uantity
Re
pleni
sh
ment
o
f
correct
l
ubrican
t
.
Ex
cess
fill
ing into c
rankc
a
se
E
ngin
e o
il
ch
eck
.
Symptoms and condit
ions of failu
res
Cau
s
e
De
fecti
v
e sta
rt
Engine stall
after
sta
rt
Defective r
otation
cont
rol
Insufficient
engine output
Noise/vibra
tion
Lubricant
C
ooling
wa
ter
Inta
ke
Exhaust
F
uel
Electrics/electronics
Action
Referenced
page number
St
arte
r no
t
ro
ta
te
Starter
rotates
Exha
ust
fu
me
Speed change by accelerator n
ot available (constant sp
eed)
With
out lo
ad
At w
o
rk
Exhaust color
Knocking noise at combustion too high
Combus
tion noise uneven
Noise other than combustion from engine
Engine vibration too big
Lubricant consumption too much
Lubricant diluted with fuel
Lubricant mixed wit
h water
Oil pres
sure too low
(oil pressure lamp on)
Overheated (water temperature lamp on)
Water temperature too low
Pressure down (air cleaner lamp on)
Pressur
e up
At wo
rk
Blow-by too much
Exhaust temperatu
re up
Fuel consumption too much
Fuel mixed with water (oil-water separator
lamp on)
Fuel filter contaminated too e
arly
Battery charge defect (charge
lamp on)
ECU indicator lamp flashing
ECU indicator lamp not on just after key-on
(2 seconds)
Prescribed ECU control func
tion not operate
Fuse meltdow
n, disconnection (repe
ated)
ECU indicator lamp not on just after key-on
ECU indicator lamp on just
after key-on (2 seconds)
Engine not start (not even initial combustion)
Engine not start (stall after serial combustion)
Engine starts later then e
ver
None
Little
Much
Specified speed setting not available
Poor acceleration
Return to low speed not
smooth
Hunting
Hunting
Norm
al
White
Black
White exhaust color
Black exhaust color
3TNV
88F_
SVM_
A4.b
ook
10
ページ
2
01
2年
7月
26
日
木曜
日
午後
6時
4分