1995 NISSAN ALMERA N15 service indicator

SEF217M
•

START
Visually checkthefollowing:
• Air cleaner clogging
• Hoses andducts forleaks
• Electrical connectors
• Gasket
• Throttle valveandthrottle position sensoroperation

m
Start engine andwarm itup until water temperature
indicator pointstothe middle ofgauge.
Ensure enginestaysbelow 1,000rpm.

iii
Open engine hoodandrunengine atabout 2,000rpm
for about 2minutes underno-load.

[iJ
Perform ECMon-board diagnostic system(Diagnostic
test mode II).
OK lNG
Repair orreplace components asneces-
sary.

I!]
1

Run engine atabout 2,000rpmforabout 2minutes
under no-load.
Race engine twoorthree times under no-load, thenrun
engine forabout 1minute atidle speed.

~

BASIC
SERVICE PROCEDURE
eM]

Idle Speed/Ignition Timing/IdleMixtureRatio
Adjustment (Cont'd)
SEF247F
SEF455Q
MALFUNCTION INDICATORLAMP
SEF248F
EC-37

o
1:<
MONITOR
1<
NO FAIL
0
BASIC
SERVICE PROCEDURE
@KJ

Idle Speedllgnition Timing/IdleMixtureRatio
Adjustment (Cont'd)

@

CMPS.RPM (REF)
MIR
F/C
MNT 2000rpm
RICH
Checkidlespeed. Refer10EC-36.
OK NG

Check IACV-AAC valveandreplace ifnecessary.

__ R_E_C_O_R_D __
I

SEF515Q

CheckIACV-AAC valveharness andrepair ifneces-
sary.
Check ECMfunction- bysubstituting anotherknown
good ECM.
-ECM maybethe
cause ofaproblem,
but this israrely the
case.

SEF987K

(g~~~:: _
mJ
~~r

l~~~~V
-~

Data linkconnector forCONSULT
(Connect CHKandIGN terminals
with asuitable harness.)

SEF909P

MALFUNCTION INDICATORLAMP

SEF217M
o

(ij\E
1.See "MIA
F/C
MNT" in"Data monitor"
~ mode.
2. Run engine atabout 2,000rpmforabout 2
minutes underno-load.
3. Maintaining engineat2,000 rpmunder
no-load (engine iswarmed upsufficiently.),
check thatthemonitor fluctuates between
"LEAN" and"RICH" morethan5times dur-
ing 10seconds.

1 lime: RICH->LEAN ->RICH
2 limes: RICH->LEAN
->
RICH ->LEAN
->

RICH OR

Set "Oxygen sensormonitor" indiagnostic
test mode II.
(See page EC-47.)
2. Run engine atabout 2,000rpmforabout 2
minutes underno-load.
3. Maintaining engineat2,000 rpmunder
no-load, checkthatthemalfunction indicator
lamp onthe instrument panelgoesONand
OFF more than5times during 10seconds.

OK

END

EC-40 NG

•

oxygen
sen-
Europe and
nd Australia

els)

sensor
for Europe
el, and Aus-
T models)

@

II

Check oxygen sensor*1 harness: *1:
Heated
1) Turn offengine anddisconnect battery sor
(For
ground cable. Israel,
a
2) Disconnect ECMharness connector from
AIT

mod
ECM. Oxygen
3) Disconnect oxygensensor*1 harnessconnec- (Except
tor. Then connect harness sideterminal for and
Isra
oxygen sensor*1 toground withajumper tralia

AI

wire.
4) .Check forcontinuity betweenterminalNo.46
or No. 19ofECM harness connector and
body ground.
Continuity exists................................................ OK
Continuity doesnotexist .................................. NG
OK lNG

I
Repair orreplace harness.
Connect ECMharness connector tocontrol unit.

~
III

00
1)
Connect batteryground cable.
2) Select "ENGCOOLANT TEMP"in
"ACTIVE TEST"mode.
3) Set "COOLANT TEMP"to20°C (68°F)
by touching "au"and"ad" and
"UP", "DWN".
OR

@
1)
Disconnect enginecoolant tempera-
ture sensor harness connector.
2) Connect aresistor (2.5kQ)between
terminals ofengine coolant tempera-
ture sensor harness connector.

[+]
Start engine andwarm itup until water temper-
ature indicator pointstomiddle ofgauge.

~

BASIC
SERVICE PROCEDURE ~
Idle Speed/Ignition Timing/IdleMixtureRatio
Adjustment (Cont'd)

CD

SEF194R
SEF056PA
~

DISCONNECT

18
~
AEC681

===MONITOR===
CMPS.RPM (REF)
Orpm

INJ PULSE
O.7msec

IGN TIMING 5BTDC

SEC242BA

•
ACTIVE TEST.
0

COOLANT TEMP 20°C

Engine coolant

DISCONNECT
temperature

10
!;j:~:~~'~";"'"

~

00
2.5k
n
resistor

II

ECM
19'
CONNECTOR
II

19

II

For Australia

II
ECM ~CONNECTORII

46

II
Except forAustralia

SEF455Q EC-41

@@

'1: Heated oxygen sensor(ForEurope
and Israel, andAustralia AITmod-
els) Oxygen sensor(Except forEurope
and Israel, andAustralia AITmod-
els)

Ii

1

Race engine twoorthree times under no-load, thenrunengine atidle
speed.

1

Check "CO"%.

Idle CO:Less than10%

[!J

After checking COOJo,

00
1)
Touch "BACK".

@
1)
Disconnect theresistor fromterminals ofengine coolant tem-
perature sensorh.arness connector.
2) Connect enginecoolant temperature sensorharness connector
to engine coolant temperature sensor.
NG OK
Replace oxygensensor'1.

m

00
1.
See
"M/R
FIC
MNT" in"Data monitor" mode.
2. Maintaining engineat2,000 rpmunder no-load
(engine iswarmed upsufficiently.), checkthat
the monitor fluctuates between"LEAN"and
"RICH" morethan5times during 10seconds.

1 time :RICH
->
LEAN
->
RICH
2 times: RICH
->
LEAN
-+
RICH
->
LEAN
->

RICH
OR

Ii)

@
1.
Set "Oxygen sensormonitor" indiagnostic test
.mode II.
(See page EC-47.)
2. Maintaining
engineat2,000 rpmunder no-load,
check thatthemalfunction indicatorlamponthe
instrument panelgoesONand OFF more than5
times during 10seconds.

I
NG OK

SEF913J

2000rpm
RICH

1;:(

NO FAIL
0
SEF248F

CMPS.RPM (REF)
MIR
FIC
MNT

1;:(

MONITOR
BASIC
SERVICE PROCEDURE ~
Idle Speed/Ignition TiminglldleMixtureRatio
Adjustment (Cont'd)

~\\~\\\\""1"'1///1.
@

#'
7 5~

~ ~
{2{ 6~

?1 7-=1

:;::. .;f

~o 84

xl000 rlmin

SEF987K

(gJ~
~~~~N

l~~i~V-=~
-~

Data linkconnector forCONSULT
(Connect CHKandIGNterminals
with asuitable harness.)

__
R_E_C_O_R_D __
I

SEF515Q
SEF909P EC-42

TROUBLEDIAGNOSIS -General Description

KEY POINTS
WHAT .....Vehicle &engine model
WHEN Date,Frequencies
WHERE Roadconditions
HOW Operatingconditions,
Weather conditions,
Symptoms
SEF907L
WORKSHEET SAMPLE
Diagnostic
Worksheet

There aremany operating conditions thatlead tothe malfunc-
tion ofengine components. Agood grasp ofsuch conditions can
make troubleshooting fasterandmore accurate.
In general, eachcustomer feelsdifferently aboutaproblem. It
is important tofully understand thesymptoms orconditions for
a customer complaint.
Utilize adiagnostic worksheet liketheone shown belowin
order toorganize allthe information fortroubleshooting.

•

Customer name
MR/MS Model
&
Year
.

VIN
Engine
#
Trans. Mileage
Incident Date Manu!.Date InService Date

o
Impossible tostart
o

No combustion

o
Partial combustion

o
Startability
o

Partial combustion affectedbythrottle position
LJ Partial combustion NOTaffected bythrottle position

o
Possible buthard tostart
o
Others [

1

o
Idling
o

No fast idle
o
Unstable
o

High idle
o
Low idle

o
Others [

1

Symptoms

o
Stumble
o
Surge
o
Knock
o
Lack ofpower

o
Driveability
i.J
Intake backfire
o
Exhaust backfire

o
Others [

1

o
At the lime ofstart
o

While idling

[.J
Engine stall

o
While accelerating
o

While decelerating

o
Just after stopping
o

While loading
Incident occurrence
o

Just after delivery
o
Recently

o
Inthe morning
o
At night
o
Inthe daytime
Frequency
o
All the time
o

Under certain conditions

o
Sometimes
Weather conditions
o
Not affected
Weather
o
Fine DRaining
o
Snowing
o
Others [

1

Temperature
o
Hot
o
Warm
o
Cool
o

Cold

o
Humid OF

o
Cold
o
During warm-up
o
After warm-up
Engine conditions
Enginespeed

I
I
I
I

I
I
I

I

I

0 2,000 4,000
6,000 8,000
rpm

Road conditions
o
Intown
o
Insuburbs
o

Highway

o
Off road (up/down)

o
Not affected

o
At starting
o
While idling
o
At racing

o
While accelerating
o
While cruising
Driving conditions
o

While decelerating
o

While turning (RH/LH)
Vehicle speed
I
,

I
I
I III
I
I
I
II

0 10 20 30
40
5060
MPH

Malfunction indicatorlamp
o
Turned on
o
Not turned on

EC-61

@

START
Visually checkthefollowing:
• Air cleaner clogging
• Hoses andduct forleaks
• Electrical connectors
• Gasket (intakemanifold, cylinderhead,exhaust system)
• Throttle valveandthrottle position sensoroperation

m
Start engine andwarm itup until engine coolant temperature indicator
points tothe middle ofgauge.
Ensure enginespeedstaysbelow 1,000rpm.

1

Open engine hoodandrunengine atabout 2,000rpmforabout 2minutes
under no-load.

Ii]
Perform theDiagnostic TestMode
1\
(Self-diagnostic results).
OK ~NG
Repair orreplace components asneces-
sary.

[!J
Run engine atabout 2,000rpmforabout 2minutes underno-load.
Rev engine twoorthree times under no-load, thenrunengine atidle
speed forabout 1minute .

li]1!I
00
1.
Select "IGNITION TIMINGADJ"inWORK SUPPORT mode.
2. Touch "START" .

.

OR

00
1.
Turn offengine anddisconnect throttleposition sensorharness
connector.
2. Start engine.
Rev engine (2,000-3,000 rpm)2or 3times under no-load, thenrunengine
at idle speed.

t

Throttle position sensor
harness connector SEF785KASEF051PA
BASIC
SERVICE PROCEDURE Em
Idle Speedllgnition TiminglldleMixtureRatio
Adjustment (Cont'd)
SEF248F
SEF455Q
Malfunction indicator
lamp \
I/

'~,,/

- CHECK-

,,/
........

/ I\
Ii] •IGN TIMING ADJ.
D
IGNITION TIMINGFEEDBACK
CONTROL WILLBEHELD BY
TOUCHING START.
AFTER DOING SO,ADJUST
IGNITION TIMINGWITHA
TIMING LIGHTBYTURNING
THE CAMSHAFT POSITION
SENSOR.

I
START

I

SEF546N
EC-244

BASICSERVICE PROCEDURE
mJ

Idle Speed/Ignition Timing/IdleMixtureRatio
Adjustment (Cont'd)
@
SEF909P SEF913J

RECORD

@

M
may bethe
se ofa
blem, butthis
arely thecase

II

1

Check idlespeed.

00
Read
idlespeed in"DATA
MONITOR" modewithCONSULT.
OR

@
Check
idlespeed.

M/T:
800:l: 50rpm

A/T:
800:l: 50rpm (in
uN"
position)

OK ~NG
Check IACV-AAC valveandreplace ifnec-
essary.

~

Check IACV-AAC valveharness andrepair
if necessary.

~

Check ECMfunction- bysubstituting
another knowngoodECM.
-EC
cau
pro

1II111[!]
is
r

(j)
1.
See "M/R
FIC
MNT" in"DATA
MONITOR" mode.
2. Run engine atabout 2,000rpm
for about 2minutes under
no-load.

3.
Maintain engineat2,000 rpm
under no-load (engineiswarmed
up sufficiently). Checkthatthe
monitor fluctuates between
"LEAN" and"RICH" morethan5
times during 10seconds.

1 cycle: RICH->LEAN ->RICH
2 cycles: RICH->LEAN ->RICH
->LEAN ->RICH

NG
OR
~
(j)
1.
Set "Heated oxygensensor
monitor" inthe Diagnostic Test
Mode II.
(See page EC-252.)
2. Run
engine atabout 2,000rpm
for about 2minutes under
no-load.

3.
Maintain
engineat2,000 rpm
under no-load. Checkthatthe
malfunction indicatorlampgoes
on and offmore than5times dur-
ing 10seconds.
~OK
END

SEF135K

I

MEC7118
825rpm

2000rpm

RICH

1<

NO FAIL
D

RECORD
\ I/

.........
~/"

- CHECK-

/
......

/ I\

~MONITOR
~NOFAIL
0

CAS-RPM (REF)
CMPS.RPM (REF)
MIR
FIC
MNT

1<

MONITOR

@~~
~~r

~~V
-
-~

Data linkconnector forCONSULT
(Connect CHKandIGN terminals
with asuitable harness)

II

SEF051PEC-246

Heatedoxygen sensor
harness connector BASIC
SERVICE PROCEDURE [][]
Idle Speed/Ignition Timing/IdleMixtureRatio
Adjustment (Cont'd)

@

II
MEF031DB

~io

ECM TIcoNNECTORl1

19

LEn
MEC712B
Check
heated oxygen sensorharness:
1. Turn offengine anddisconnect batteryground
cable.
2. Disconnect ECMharness connector fromECM.
3. Disconnect heatedoxygen sensorharness con-
nector. Thenconnect harness sideterminal for
heated oxygen sensortoground withajumper
wire.
4. Check forcontinuity betweenterminal
@
ofECM
harness connector andbody ground.
Continuity exists OK
Continuity doesnotexist NG

OK

Repairorreplace harness.
Connect ECMharness connector toECM .
•

OR

1.
Connect batteryground cable.
2. Select "ENGCOOLANT TEMP"in
"ACTIVE TEST"mode.
3. Set "COOLANT TEMP"to20"C (68"F) by
touching "Qu"and"Qd" and"UP",

"DWN".

Disconnect enginecoolant temperature
sensor harness connector.
2. Connect aresistor (2.5kQ)between termi-
nals ofengine coolant temperature sensor
harness connector.
3. Connect batteryground cable.

Ii

AEC681

•
ACTIVE TEST.
0

COOLANT TEMP 20°C
===MONITOR=== CMPS.RPM (REF)
Orpm

INJ PULSE
O.7msec

IGN TIMING 5BTDC

DISCONNFCT
Enginecoolant
10 temperature
sensor
harness connector
~ ~

00
2.5
k0 resistor
Start
engine andwarm itup until engine coolant
temperature indicatorpointstomiddle ofgauge.
(Be sure tostart engine aftersetting "COOLANT

'-- A_E_C6_8-l2
TEMP"orinstalling a2.5 kQresistor.)

Ii

SEF455QEC-247