1993 NISSAN SERENA Service Repair Manual

IDLE
SPEED'GNMON TIMINCT/IDLE II'XIURE BATIO INSPECTION -GA_I
o
F@e enghe (2,0.o
3,000 rpm) 2
o' 3 'm*,
u|&lno.b3d'lhanrunsngimatidssFd'
EF & EC213

TROUBLE
DIAGNOSES
Contenls
How lo
Penom Torble
Di.gnoss lor Oulck and
Ac.urate Rep.ir
S€rdiagn@i3 ..........
Seltdi.on6is -
Mode I
sendlaancis Mode
tl
SellSiain6is -
Mod€ ll
is Cold . .. . .
oiagncric Pr@durc
5 -
Had lo sl.rl
or lmposible lo $an
wh6n rhe Engi.e
Diaonoslic Pr@dure
6 -
Hard to slart or
lmposible lo s|an undet
-
Nomal Condnions
Diao.oslic Pr@duE ? .Hesitlon
wlEn the Ensine b Hol
Dia;nosric P@dure 3 -
Hesitalion when the Enqin.
is Cold
Dia;nosric P@edure 9 .
Hesnaton unde' Norm.l
condltions
Dr.ano€iic Pe€due lO-Engine
St6lls wnen tum'ng
Diaqnonic PrGduFrt
Ens're Slalls when
lh. Engine is
Hol
Di.qnosric Pcedure 12-
Engire stalls when lhe
Engin. i3 cold
D'aqndlic Pro..due 13-Engine
SLlle when Stepplnq on
lhe
A@le'.tor Mom.nranly
Oiasn6hc P'oeduE
14 -
Engine Sr.lls after
Deel.raling
Oi.anostc Pr@du'e 15-
Engin€ Slalls when Aelet.ling
or when
Dhvho.t congta seed
Di5qnostc P@duE
16-Engin; slalls when
lh; EleclncalL@d 's
Heaq
Diadnosric P@dure l? -
L.c* ol Pd€r and Slumble
Dia;nosric Peedure
13 -
D€ronahon
Di.dnosric Pr@eduE le-
surs€
D'aono.ric Pt€eduE20
Brckfire lhrcugh
lh€ htake
Diaqnosric ProeduE 2r -
BackfiE lhrough the
Exhausr . .. .. .
DlaqnGlic Pn €du@ 22
I\,IAII POWEF 5. PPI
Y AND COOL\O C FCI]IT
oiaon6lic Poedurc 23
-
CRAN^ ANULL 9FNSOq .
...
Dian.ostc Pr@duE
24
'
A B F-OW MTTTR
...
Diadnostic P|oeduc 25
ENGINETEMPERATUBE SENSOF
- VEH CLE SPEED SENSOF
. FIHAIJST GAS SENSOB
E.G F.
CONTROL . .. .. ... .......
LNJECIOF .. . .. . .
START
SIGNAL (Erhausl
gas
*n$r monitor -
Models
I -
Hiqh ldlingEtler Wa'rup
2 -
Hunling
3- Unsr.blg
ldle
4 -
Hard lo Slarl or
lmgossible to Stan when
the Engire
EC 233
ec.294
EC 297
EC 302
EC 306
EF & EC-214

TNOUBLE
DIAGNOSES
Conlent6 (Cont'd)
DLqDdc P|@duF 35
a.c.c. vatvE ........ ................ ..........................FF&Ec-3oa
Dtutuo&t P|@du6 36
-
FAOIATOF FAN CONTFOL
Dirbo.rtt P|@d!€ 37
-
POWEF STEEFING OIL PBESSUFE SWITCH ...... EF
& EC-311
EF& EC.3r3
Dlasnodc Prbc.duF 3a
NEUTAAL SWTTCH .................
.......,...,......._.,......... EF& EC-321
Eletrlc.l cmpoBnt In.p€ctlo
.,.,...,..,,.,,..,.,,,.,,.,,,.,,.,,.-......-............-......-......-.............. EF & Ec-324
EF & EC215

TROUBLE
DIAGNOSES
@#'N 'yu! How
lo Pedom
Trcuble Dlagnoses lor Ouick
and Accural€ Repair
INTBOOUCNON
The engine has an e ecvo.ic @nlrol!nr1lo coniblmajor sys-
lems slch as lu€lcontrcl, gniton
control, idle speed conlol,
elc. The coniol lnil accepls inpul
signab irom sensoG and
inslant y
drives aclualoB. ll
s ess€nliallhal boih kinds ol sig
nals arc poper
and slab e al
the sam€ lim€,
il is impodanllfral
therc are no @rventional prcblems
such a6 v.cuum
l6aks,
toul€d spa* p
ugs, or olher prcblems
wln lhe ergine
ll is much mo€ dficull lo diagnose a problem
lhal occu6
lnlemillenty Ether lhan @ntinuously. Mosl
iniominenl pob'
€ms arc caused by poor
e ectr c @.nedions or npbper w .
ng. In this c66, €r6lul check ng ol suspecled circuiF day
h6p pr€venl
th€ €pla.omenl ol
Cood pans.
A vislalch€ck only may nol lind lhs cause of lhe p@b
ems, so
a road rest with a circu 1 lester conn€cl€d lo a suso€cl€d c rcu 1
Betore undenakinq actual .hecks, lake
lust a
lew minules lo
la k wilh
a cuslom€r
who aoDroachss wlh a ddv€abiitv com-
plaint. The customer is a very qood
supplier ol i.lomalio. on
\-.hpobens especicly inle'Titlenl
ones lh'oLgh
irle'ac
lion with lhe customef,lind oul whar symdoms are prese
and
u.der whal mndilions lhoy oeur.
Slaft your
d agnosis by looking tof conve ional' prcblems
in* Ths is one ol th€ b€sl ways to lrcuboshoot drveabilily
probLems on an €leclbn €l y
.onlb l6d €nq ne vehicl6.
EF & EC-216

TROUBLE
DI,AGNOSES
How to Pertom Trouble Dlagnoses tor
Quick
and Accu6te Repair (Cont'd)
+'"
!q-
EFMIfr€NT PFOALEM SIMIUNON
IEFT Ed2I9)
EF & EC,217

TROUBLE
DIAGNOSES
How lo Perform Trouble Diagnoses ior
Quick
and Accurale
Repair (Conl'd)
DIAGNOSNC WOFKSHEET
TheG a€ many kifds ot ope.ali.g condlions lhal lead lo ma
Jlnclio.s on €ngin€ €mpon6nc.
A good
grasp
ol such condlions can make lrclbe-shooling
Jaster and doe accu€le.
i geneal,leelings
fora pbblem
dep€nd on each cuslomer. h
is impodant to luly undercland lhe symplons or under whal
@.d tons a cu$oher @dp a ns.
Make good
use ol a diagno.li. wodsh€el su.h as th€ on€
shown b6low in od6r lo uliliza all lhe complainls for lblble-
bu' ha'd 'o sbd ! orhare
I I
I
EA.
L E siNie - orhets
I I
ttl rl
E or oad (uo7doPn)
E whie tu'n iq (RN/LH)
EF & EG218

TBOUBLE
DIAGNOSES
How lo Perform Trouble Diagnoses for
Quick
and Accurale Repair (Cont'd)
INTEFIIIIITTENI PROBLEM
SIIUULATION
In order lo dupli.ale an nlerminent pob€m,
il i6 €ff€clive
lo
creale similar condilons lor.ompon€ni pan6.
under which lhe
Perlorm lhe act v
ly isled
under Sery @ p@cedu€
a.d nol6 th€
P6don s6kasica (Moda
|
) ar
a@
tw FN
G: oo doffihunirj
MARMTG: oo
d drdry
Pdr*e on
EF & EG219

TROUSLE
DIAGNOSES
f o Self{iagnosis
CHECK ENGINE UGHT
A ch€ck€ngin6liQhl hs be€n adopled on allmod€ls. This liqhl
blinks smulraneously wrh rhe FED L.E.D. o. the E.C.U.
E.C.U. LE,D,
Th6 E.C.U. is siiualed behindlh€ glov€
box, and ony has
one
REO L.E.O.
SELFDIAGNOSNC FUNCTION
.";il*
@ IL:L)
EF & EC-220