1993 NISSAN SERENA engine

IDLE
SPEEMGNMON TIMINGiIDLE MIXTURE RATIO INSPECTION tca
I
+
B .[i' 2)
Bun snsins a( abod 2 o0o
nm
3) Ma a n ne 6ns rc ar
a@ Dm
undd icmd (6n0io
3 {am6d
up sL c eniry.), .hsk ihar ihe
LE N -
R|CH..-,
1) sd
"Exh&d
s6 $mq
mdi.
2) Run engine
ar abod 2.000
Fm
3) Mainhlnine snsins at 2,ooo rpm
EF & EC-203

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

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

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

TROUBLE
DIAGNOSES
Selfdiagnosis -
Mode I
MODE I _
BULB CHECK
In this mode,
rhe FED L.E.D. in
th6 E.c
U.
and rhe
CHECK
ENGINE LIGHT n lh€ insltum€nl panelsl,ay
"ON'.
ll elrher€main "oFF
, checkrhe
bllb in rhe cHEcK ENGINE
LIGHT or lhe RED
L E.D
MODE I _
MALFUNCTION WAFNING
. Th6
FED LE.D..nd OE CHECK ENGINE LIGHT
{llltun oli
when nomal @ndnlo is deleted.
Sell-diagnosis -
Mode ll (Selfuiagnostic
results)
DESCFIPnON
In this mode, a mallunclion code ls lndi€l€d bylh€ numbd ol
llashes iioh
the FED L.E.D. orlhe CHECK ENGINE LIGHT as
LonA (0.6
s€6nd) blinking ind
€les the number ot len dtgis
and shorr (o.3
s€6nd) blinkng indicates
the nudber ot singto
digils.
Fof exampl6, rh6 r€d L.E.D. f.sh€s once lor
0.6 se@nds and
then itllashes lwice lor 0.3 s€@nds. Th s ind
€tes the number
''l2 and €f6rc lo a malfuncton in
the a r llow meter. tn fi s
'' " ns ar€ c. code nJnbers.
ol.Drav @de t bre
EF &EC-22

TROUBLE
DIAGNOSES
Selfdiagnosis -
Mode ll (Exhausl gas
s€nsor
monilor -
Models wllh catalyzer
only)
DESCFIPnON
Inlhis mod6,lh6 CHECK ENGINE LjGHTand
FED L.E.D. dis-
play lhe @nd'tion d fte lue
riere
{l6dn o
ch) wrich is
monirored by lhe exhausl gas
s6nsor.
*: Mahb ns condiions jusr
bs.orc sw
HOW TO CHECK E.XHAUSI
GAS SENSOR
1. S6t Mode 1l
lReler to "How To swtTcH MoDEs".l
2 Slal engre cnd wa a i up
unrle.qne coola.t lenped
ur€ ird eror poinc
to rhe
m ddte ol ^e
gauge.
-
3 BJn eng'ne ai aboJr 2,ooo
?n tor
aooui2;n-ter
Jnde'
no]oad condilions.
4. Mak6 su€ REO L.E.D
or CHECK ENGTNE LtcHT oo€s
O .rd OFr no'. rhan
5 [Tes evea -O
s€lonos: ;€a.
su€d at 2.o0o
Dm u.derno-toad.
EF &ECJ%

TNOUBLE
DIAGNOSES -dt
tr Procedure
4 -
Hard to Slart or
to Start when the Engine
is Cold
Diagnostic
lmpossible
tr
E ffi< I
(cEnk anqrs sansor ham€ss ofr
i4b, shourd rerui codn*r€d.)
2. Tun iqniion sw bh oN. (Do
ioi dan
by Mid, d6 eeh
4eb h*e
an
EF & EC-2i13

TROUBLE
DIAGNOSES
E Diagnostic
Procedue 4 -
Hard to Slart or
lmpossible to Siart when the Engine is Cold
(Confd) @
m, bd rhb h 'a'6t rb ca3.
ECr244