1993 NISSAN SERENA fuel

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sNo[ovc3Hd

TROUSLE
OIAGNOSES rcr-t
Diagnoslic Procrdure
3:|
FUEL PUMP (Not
Berniagnodtic iiem)
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EF & EC-302

TROUBLE
DIAGNOSES
@-,ffi€'
Ei6
CilE FADIAIOA
FAN IVIOTOAS
Dis6nn6cl €dialor fan molor haness
connectoF and supp y
hdiator fan molor l€m nals w(h
banery @ltaqe.
Electrical
components Inspectlon (conl'd)
INJECTOF
1. Disconned injeclor hamess oonneclor.
2. Cheok €sislance between leminalsasshown in the tigure.
Rdtub@: 10 -
l4O
ll N.G., r€plac6 nteclor.
ll N.G., rep..e radiatorlan
hobr.
E.C.C.S. FELAY, FADIAIOF FAN
FELAYS AND FUEL
Cheok oontinuily belweon lominas
O and
O
lf N.G., €p1..6 16
ay.
RAOIATOR FAN RELAY.2.
Cheok oontnuily belw66n lemina s
O .nd
O. @ and
O.
bsesibmhas
o md
@
ll N G, rep
a.e reay.
NEUIRAL SWTTCH
Ch€ck coniinuily b€tdeen
rerm'nars
@ a.d
o.
o
o
o
@ o
@ @
EF & EC€3:l

FUEL
INJECTION
CONTNOL SYSTEM INSPEC]'ION
Releasing Fuel Prcssure
Eet rc dlsnrEtlng ftFl lift, El.Es nd pEsuB
lrom tu€l
1. Tum iqnilion swilch "ON'.
2. P6r'om 'FU€L
PFESSURE FELEASE" in woRK
SUPPOBT mode wilh CONSULT.
4. Atler enline sla ls, c6nk il two or thr€e
limes lo
re ea* alliuelp6ssuG.
5. Tuh iQnilion swilch ofi.
1 Femoveluse ior fue pump.
3. Atl6r 6noin€
stals, crank ii lwo or lhr@ limes lo
16 €as€
all luel p€ssure.
4. Tun igniiion
switoh oll and rcconngcl iu€l pump
Fuel Pressue
Check
a. Wh6 @nn€cring ftFl llre,
atMys ue n4 ct.npB,
b, M.k€ sE lhd cl.mp
3.g dc nol 4rl*t diEdrt
c. U* a lorq6 dri@r to light n drmpa
d, u$ P€suB G.ug€ b
.nek tuel pl*u6,
€, Do nor p.rlom
luel p|lge
ch6k whit6 lu.t p|€gue
Egularor conaol
sFbm ls oF€ting; othwis, ftFl prF
3uE g.ug€
mlg|n Indl@to incon€cr Edinq..
1 . Bel€ase luel
oressure to zero.
2, D sconnect lue hose b6lw6€n iuel lilter
and luel tube
3. lrcla lpr€ssure qauge
betueen lu6lliller and lu€ltube,
4. Sianengne
aid check lor luel 6akage.
?
o
EF & EC€36

FUEL
INJEC'IION
CONTROL SYSTEM INSPECTION
Fuel Pr€ssur€ Check (Cont'd)
s. Fead lhe ind €no. oliu€lpr65su@ gauAe,
When tuel p|Bue
Egulalor valw ucqum h@
Aporedngl€ly 2'r5 kPa
(2.45 b.r, 2.5 kg/cir2,36 p.l)
$rh.n tuel p|6uE
regulator valve vewm h@ ig
Apfr*inat€ly 294
lPa
(234 bar, 3,0 ks/ch',43 psi)
6. Stop gngine
and db@nnect lu€l pr€s6urc
egllalor vac-
uum hos6 fbm inlake
maniiold.
7. Plug intake manllotd with a tubber cap.
a. Conneclvanab e vacuum sour.6lolu6lpr€.su€ regu
alof.
Iniec{or Removal
and Installation
1. R€l6rs6lu€l pEs.lr€
lo 2erc,
2. Disconn.ct nloclor han€ss
con.ectors.
3. Disconn.ct vaclum
ho* ton pressure
regllalor.
4. D scon.6ct lu€l hoses
frcn llettubeas*nbv.
5. F€mo6 ini€cloE with luel
tube a$embly.
I c
sEn enq'ne a-o ecd '[email protected]
ollu6lpre$u.€ q.ug€
as
FEI pEsuF
.hould de.|e@ 6 veuufr inc|€5s, ll |wlr.
.F qn.atsfaclory,
€pl@ tu61 p|€suE
Egul.lor
EF & EC-3r]7

FUEL
INJECTION
CONTROL SYSTEM
INSPECTION
Injector Removal and Installation (Cont'd)
6. Push outanymaltu.ctoning iijedoriom
rue
lubeassem-
Do not enEd injectd by pinching
co.nector,
7. Feda@ or clean injecbras ne.essary.
a. nslalL ini€clor 10 luellub6 assomblv.
Al@ys cpl@ Gdngs
.nd insulatoB wilh new on$.
Llbrlcale Ginqs wllh
a
sre.r ol
slll@m oil.
9. Instal njeclors wlh ruer
tube assembry lo iilake
fra.ilold.
Tghien luellube bols lo lhe spec lled loque.
Tiqhr.ninq poedu€:
1) Tighren rll boh. ro 93 ro 103 N.n (0.9s
ro Lr
kg-m, 6.9 to 3.0 tt-lb).
a nghten
atl bons to 21 to 26 N n (2,1
to 2.7
kg-m, 15 to 20 tflb),
10. Inslalluelhos€s lo tueltube ass€mbly.
Lubiic5te luel h@ wilh a
s|@r ol sili@ne oil.
11. Feinsla I
any parts
renoved i.
reverse order ol redova.
After preperly
dnecring nd h@
io lnjector
and l@r
tube
.smbry, ch€k @neclion lor l@l l€kagE,
EF & ECn38

EVAPOBATIVE
EMISSION CONTNOL SYSTEM
Oascriprion
Inspeclion
Check cabon oanistor as lo lows:
O :
Blow anand
ensu€ Ihatthe€
@ :
Blow
aiiand ensu.ethailheG
-lhe
evaoo€lve emission coniol svsl€m is
used lo reducc
hydroebons omllted i.lo lh€ almosphere tom
lhe iuel sys
lem. Ths rcdlction ol hydro.arbons
s ac@dpished by acli
val€d char@als in
the cabon canister.
The tlel vapor from the sealod tu. rank i. led into rhe
canister
which conhins aclival€d.adon .nd
lhe vapor
is slored lherc
when lh€ €ngin6 is not tunninQ.
The canister
elains lhe fuelvapof unlillh6 can sl€f is puq€d
bylhe an dBwn through lhe bonom ol lh€
canisler lo the inlake
manilold wh€nlh€ €nqin€ is
running, When the engine runs al
ld€, lh€ purg€.ontrcl
valve is cosed.
OnlV a smal amounl of stored vaDor f ore ntolhe ntake
ma-
nifold lh@ugh lhe corclant plrge
o li@
As the engine speed
incrcases, andlh6lhbnb vacuum
ises hiqher,ftepu€e con,
tolvalve oo€rc and Ihe vaDor is
sucked inlo lhe niake manr
fold through bolh
lhe main purgeorlice
and lh6 conslant pulqe

EVAPORA'IIVE
EMISSION CONTROL SYSTEM
Inspection (Cont'd)
FUEL TANK VACUUM FELIEF VALVE
1. wp6 cl.an valv. housing.
2. Slck ar Ihbuqh lh€
cap. A
slight resislance ac@frpan ed
by va ve
clicks indicates lhat valve is in good
mechanica
@ndition. Nole rlso rrrdl. by lurh€r sLc{nq.i.. rh€
€66.
lance shoLld disapp€arwllh valve
clicks.
3. lf valv€ s cloqged or ii no resistanoe
is lelt, replace cap as
FUEL CHECK VALVE
1. Blow air lhrouoh
connectof o.lleliank side.
A 6nsid6Eble
rcsistance should be lell and a podon
olair
llow 6hou d be direcied iowad lhe €n sl6r.
2. Blow
air though connedof on €n sl€f s de.
An tlow should be smoolh y
dn€cbd loward luel
lank.
3. ll '.erch€c
vs v€ i6.urpected
ol.or p
opedy luncroli!
n step6 1
and 2 above, replace il.
EF & EC€,10