NISSAN ALMERA N15 1995 Service Manual

I!]
CHECK IDLEADJ. SCREW INITIALSET
NG
Adjust engine speedby

---..

RPM.
turningidleadjusting

00
1.
Select "IGNTIMING ADJ"in screw.
"WORK SUPPORT" mode.
2. When touching "START",
does engine speedfallto
750:!: 50rpm
(AfT
in
"N"
posi-
tion)?
OR

00
Does
engine runat750:!: 50rpm

(AfT
In
"N"
position)?
OK
Reconnect throttleposition sensorhar-
ness connector.

Ii
CHECK THROTTLE POSITIONSENSOR
NG
Adjust outputvoltage to

IDLE POSITION.
---..

0.50Vbyrotating throttle

00
1.
Perform ''THRTLPOSSEN
positionsensorbody.
ADJ" in"WORK SUPPORT"

1

mode.
2. Check thatoutput voltage of

RESETIDLEPOSITION

throttle position sensoris

MEMORY.

approx. 0.35to0.65V (Throttle
1.Warm upengine suffi-
valve fullycloses.) and"CLSD ciently.
2. Turn ignition switch
THLIPOSI" stays"ON".
"OFF"andwait at
OR least5seconds.

00
Measure
outputvoltage ofthrot- 3.
Disconnect throttle
position sensorhar-
tie position sensorusing
nessconnector.
voltmeter, andcheck thatitis

4.
Start engine andwait
approx. 0.35toO.65V. (Throttle at
least 5seconds in
"N" position.
valve fullyclosed.)
5.Reconnect throttle
OK • position
sensorhar-
ness connector while
running engine.
~
1

,

THRTL
POSSEN O,52V

SEF165P

•••
ADJMONITOR •••

TROUBLE
DIAGNOSIS -General Description
Basic Inspection (Cont'd)

@

========
MONITOR
========

CMPS.RPM (REF)Orpm
CLSDTHUP ON

Ii
•
THRTL POSSENADJ
.0

I!]

•IGN TIMING ADJ.

0

IGNITION TIMINGFEEDBACK
CONTROL WILLBEHELD BY
TOUCHING START
AFTER DOING SO,ADJUST
IGNITION TIMINGWITHA
TIMING LIGHTBYTURNING
THE CAMSHAFT POSITION
SENSOR

I
START

I

SEF546N

CID

(Go tonext page)

EC-272

TROUBLEDIAGNOSIS -General Description
Basic Inspection (Conl'd)
@
CHECK IDLESPEED

(ij\
Readtheengine idlespeed in
~ "DATA MONITOR" modewith
CONSULT.

MfT
=
800:1: 50
rpm

AfT
=
800:1: 50
rpm
(in
uN"
position)
OR
fiY\
Check idlespeed.

~ MfT
=
800:1:50
rpm

AfT =800:1: 50
rpm
(in
uN"
posillon)
OK

After thisinspection, unnecessary diag-
nostic trouble codeNo.might bedis-
played.
Erase thestored memory inECM.

OK

INSPECTION END

EC-273 NG

Adjust idlespeed. Refer
to
EC-243.

•

TROUBLEDIAGNOSIS -General Description
Symptom MatrixChart

SYMPTOM

z

0

i=


0::
Z
ill

w w
w
(!)

(!J
-l
-l
0

Z

0::

W

i=
0

0::
0
Q
(9

c..
i=

::>
0
z

::2:
:r:
i='
l/)

:r:

(9
:J
c..

0

6'
0

j::::
Q
::>

::2:

0::

;S
0
0::

:r:
z
w

l/)

::>
w

SYSTEM
....J

0

a
l/)

z
l/)
Reference

0
l-
e..

0
iJJ
w

0
z
0

- Basic engine control system

S?-
l/)

-l
Z

9-
z

0::
c..

Q ~
0

0

2-
page

I-

l-

ii:
....J

0

II:
I-


w
0
z

w
(!)

0

l/)
....J....J

~
:>:::

0

::>
-l

z


uJ
....J

U.

I-

0
U.
(5

B

I-
W

Z
0
z
l/)

w

l/)
II:
....J
Z

0
W
WW
l/)

....J
II:
0

I-
0
c..

II:
Z
W

II:
::>

I-

0
0
Q
l/)

II:II:

>>

0


i=
u.

::>
:>:::

u::

ii5ii5
w

0
:r:
>-

z z

w

0
I-
u::

W
II:

0 0
:r:

z

w
:>:::

II:
z
l/)
l/)
:r:

0 0

w

(!J
I-

:>:::
II: II:

:>:::

~
w

W
II:
II: II:

r:

II:
II:
::>

B
ii5

0
O'

B
00
w
w w

0

z
w

0

c..
u..

Z

><><
>
> >

:r: :r:
II:
w
:r:
-l
z
l/)

co
W
WW
00 0
co

1A 181C 1F1H
1R
1S1M
1J1L1K
1T
1V1N 1P1X 1Y
Fuel Fuelpump circuit

•
•
•
•
•

•
0
0

•
0

EC-327
Fuel pressure regulatorsystem

•
••

•

••
0
0 00

•
EC-241
Injector circuit

••
•
• •

•
0

00

•
EC-324
Evaporative emissionsystem
00 0 00
0 0

0
0
0 0
EC-238
Air Positivecrankcase ventilation system
00

•
0

•
0
0 0

0
0
00
EC-240
IACV-Air regulator

•••

•

••
•
0
0
0
EC-332
Incorrect idlespeed adjustment
0

0
0

0 0 0
EC-243
IACV-AAC valvecircuit

••
•
•
•
•
•
0

•
0

•
0

EC-335
IACV-FICD solenoidvalvecircuit
0
0 0
000 00 0
C)

EC-339
Ignition Incorrectignitiontimingadjustment
00

•
0

•• •
0
0

•
EC-243
Ignition circuit

•
•
•

•
•

•
• •
•
EC-301
EGR EGRvalve
&
EVAP canister purgecon-

00

trol solenoid valvecircuit
•

•
•
•
EC-319
EGR system

0
()

•• •
0
0

•
0
0
EC-319
Main power supply andground circuit
00 0 0
C)

0 00
0
0
0
EC-286
Cooling Coolingfancircuit

0
0
0
00 00 0 000 0
EC-343
Air conditioner circuit

00 00 0
00
0 0
0
HA
section
• ;High Possibility Item

0;
Low Possibility Item

EC-274
(continued
onnext page)

TROUBLEDIAGNOSIS -General Description
Symptom MatrixChart(Cont'd)

SYMPTOM

z

0

1=


0::
Z
W

w w

CJ

..J
W

0
Z

CJ
W
..J

1=
0
0::
0::
()

9
5
Q.

1=

::::>
()

z
:2
I

i='
en

I

5
::;
Q.

()

is'
0

;:::
CJ

::::>

:2

0::

~
0::

:r:
z
w

en
::::>

SYSTEM
..J

0
0
en

z
w

Reference

0
Q.

W
e;

w
en

0

- ECCS system

~
....

en
0

..J
Z

9-
0

z

Z

0::
Q.

9
a:
()

0

2-
page

....

....

ii:
..J

U

....

Z
CJ

0::
..J
W

0
W

..J
0

en

..J

u-
s:
.... ::.:::

0

::::>

0
z


W
..J

U
u-

e;

....
w

Z
0

z
0
w
z

(/)
en
w

en
0::
..J

....
Q.

W
::::>

w
w

....
..J

0::
0

0 0
9

en
0

0::
Z

0::0::
0::
>>

0


>-

~
u-

::::>::.:::

u:

enen
0

I

Z Z

W
0
....

u:

w
W

0::

2i 2i
I

Z
W
::.:::

0::
z
en

(/)

I
()

()

w

CJ

e;
....
::.:::
0:: 0::

::.:::

w w

W
0::
0::
0::

1=

0::
0::

::::>
en
()

()

....
e;

uu
w
w
w

0

Z
w

0

Q.

u-

Z
x x

> >>

I I
0::
W
I
..J
Z
(/)

1Il
w
w w
000
1Il

11\ 18
1C 1F
1H 1R
1S1M 1J1L1K

1T
1V1N 1P1X

1Y

ECCS Camshaft
positionsensorcircuit

•
0
0

••
0
000 0
EC-289
Mass airflow sensor circuit

•••
•••
0
00

•
EC-293
Heated oxygen sensorcircuit
••

••
0
00

•
EC-362
Engine coolant temperature sensor

••• ••
•

•
0

0
0

•
EC-297
circuit
Throttle positionsensorcircuit

••
••
• •
EC-309
Incorrect fhrottleposition sensor

0
•
0

0

•
0

0
EC-272
adjustment
Vehicle speedsensor circuit

000
0
EC-314
Knock sensor circuit

00
0 0
EC-306
ECM
0
0

0
0
00000
0
00 0
EC-270
Start signal circuit

00
EC-317
Park/Neutral positionswitchcircuit

000
0
EC-357
Power steering oilpressure switchcir-

0
0

EC-354
cuit
•

• ;High Possibility Item

0;
Low Possibility Item

EC-275
(continued
onnext page)

TROUBLEDIAGNOSIS -General Descrip_tio_n
1s_R_1

Symptom MatrixChart(Cont'd)

SYMPTOM

z

0

i=

«

W

a:

z

w
w
w
CJ
CJ
....J
....J
0

Z

a:

w
i=
0

a:
(.)

9

8
«

0.. i=
:I:

::J
(.)

z

:2

i='
en

«
:I:

8
:J
0..

(.)

Q
0

f:::.
CJ

:J

:2

a:
a:

:E
z
w

en

SYSTEM
....J

~
0
0
en

z
:J

w

Reference

0
0..

W
a

w
en

Cl

- Engine mechanical
&
other
I-

en
0

z
0

z
z

S:?-
a: 0..
....J

e-
(.)

0
page

I-
«

l-

ii.
9

~
....J
(.)

2-

a:
~
«

w
0
z

w
CJ

Cl

....J ....J

:.:::
0

:J
....J

Z

«
....J
u.

~
I-

(.)
u..
0

a
«

I-
w

«
Z
0
z

enen

w

en
a:
....J

I-
0..
Z

0

WW

:J
W
W

I-
....J

a:
Cl

0 0
9

en
0

a:

z

a:a:
a:
> >
«
0

«

>-

i=
u..

:J
:.:::

ii:

enen
0

:I:

Z Z

W

0
l-

ii:

w w

a:

Ci Ci
:I:

Z
«

w
:.:::

a:
z
en
en
:I:

(.)

(.)

w

CJ

a
I-

:.:::
a:a:

:.:::

w

a
w
w
a:
a:a:
~
a:
a:
:J

en
(.)

«
(.)

I-
(.)

(.)
w

w
w

« «

0

z
w

«
0

0..
«
u..

Z
x x

>>>
«

:I: :I:

a:
w
:I:

....J
Z

en
(l)

«
w w
w
00 0
(l)

1A 1B
1C 1F1H
1R 1S
1M 1J1L1K

1T

1V
1N
1P1X 1Y
Fuel Fueltank

00 0

Fuel piping

00 0000 000
0

Vapor lock

00

Valve deposit

000 000 00 0

Poor fuel(Heavy weightgasoline. Low

0000 00 00
0
-

octane)
Air Airduct

00 00 0

Air cleaner

0
0
00 0

Air leakage fromairduct

00 00 00 0
0 0
0

(Mass airflow sensor -throttle body)
Throttle body.Throttle wire

•
•
•

•
• •
•
FE
section
Air leakage fromintake
manifoldl

00 0

•
0
0 0
00 0
-

Coliector/Gasket
Cranking Battery

0
0
00 0
0 0
0

0

Alternator circuit

00
00
0
0 0
00
EL
section
Starter circuit

••

Flywheel
•
0

-

Inhibitor switch

00

ATsection
Engine Cylinderhead

•
0

•
•

••

•
0
0

Cylinder headgasket

•
0

()

•
0

•
0
0
00

Cylinder block

•
0

()

0 00 0 00

Piston
•
0
0

•
0
0

•
0
0

Piston ring

•
0
00 0
0 0 00

Connecting rod

00 00
00 0 0

Bearing
000 000 0
0

Crankshaft
00
0 0
0
0 0
0

Valve Timingchain

•
0
0

••
•
0
0 0

mechanism Camshaft

•
0

•• •
0
0 0

Intake valve

•
0
00 0
0

•
0
0
0

Exhaust valve

•
0
00 00 0000

Hydraulic lashadjuster

0000
'0
0 0
-

Exhaust Exhaust
manifoldlTube/Mulfler/Gasket

00
00 0
0
00
0 0

Three waycatalyst

•
0
0

•
0
0 000 0

Lubrication Oilpan/Oil strainer/Oil pump/Oilfilterl

000
0
0 0
0

Oil gallery
••

Oil level (Low)/Filthy oil

00 0000
0 0
0

Cooling Radiator/Hose/Radiator fillercap

00
0 00
0 0 00

Thermostat
00
00 0
0 00 0
00

Water pump

000 000 0 0
0

Water gallery

00 00 00
0 0
0

Cooling fan

00 0
00
0 0
0 0
0
0

Coolant level(low)/Contaminated cool-

00
0000
0 0
0

ant
• ;High Possibility Item
0; Low Possibility Item

EC-276

TROUBLEDIAGNOSIS -General Description
CONSULT Reference ValueinData Monitor
Mode

Remarks:
• Specification dataarereference values.
• Specification dataareoutput/input valueswhicharedetected orsupplied bythe ECM atthe connec-
tor.

*
Specification datamaynotbedirectly relatedtotheir components signals/values/operations.
(Le., Adjust ignition timingwithatiming lightbefore monitoring IGNTIMING. Specification datamight
be displayed evenwhen ignition timingisnot adjusted tospecification. ThisIGNTIMING moni-
tors thedata calculated bythe ECM according tothe input signals fromthecamshaft position
sensor andother ignition timingrelated sensors.)
• Ifthe real-time diagnosis resultsareNG, andtheon-board diagnostic systemresultsareOK, when •
diagnosing themass airflow sensor, firstcheck tosee ifthe fuel pump control circuitisnormal.

MONITOR ITEM CONDITION
SPECIFICATION
CMPS.RPM (REF)•
Tachometer: Connect Almostthesame speed asthe CON-
• Run engine andcompare tachometer indicationwiththeCONSULT value.SULTvalue.
• Engine: Afterwarming up
Idle 1.3-1.7V
MAS AIR/FL SE •
Air conditioner switch:OFF
• Shift lever: "N"
• No-load 2,000
rpm 1.7-2.1V
COOLAN TEMPIS •
Engine: Afterwarming up More
than70°C (15S0F)
02 SEN 0-
0.3V .....0.6 -1.0V
• Engine: Afterwarming up Maintaining
enginespeedat2,000
LEAN
+-->
RICH
MIR
FIC
MNT rpm
Changesmorethan5times
during 10seconds.
VHCL SPEED SE•
Turn drive wheels andcompare speedometer indicationwiththeCONSULT Almostthesame speed as
value the
CONSULT value
BATTERY VOLT •
Ignition switch:ON(Engine stopped) 11
-14V
• Ignition switch:ON Throttle
valvefullyclosed
0.35-0.65V
THRTL
pas
SEN
(Enginestopped)
Throttlevalvefullyopened Approx.4.0V
START SIGNAL •
Ignition switch:ON
->
START
->
ON OFF

->
ON
->
OFF
Throttle valve:
ON
• Ignition switch:ON Idle
position
CLSD THLIPOSI
(Enginestopped)
Throttlevalve:
Slightly open OFF
Air conditioner switch:OFF OFF
AIR COND SIG •
Engine: Afterwarming up,idle the
engine Air
conditioner switch:ON
ON
(Compressor operates)
Shift lever "P"or"N" ON
PIN POSI SW •
Ignition switch:ON
Exceptabove OFF

EC-277

TROUBLEDIAGNOSIS -General Description
[]K]

CONSULT Reference ValueinData Monitor
Mode (Cont'd)

MONITOR ITEM
CONDITION SPECIFICATION
Steering wheelinneutral
position OFF
PW/ST SIGNAL
•Engine: Afterwarming up,idle theengine (forward
direction)
The steering wheelis
ON
turned
• Engine: Afterwarming up
Idle2.5-3.7 msec .
INJ PULSE •
Air conditioner switch:OFF
• Shift lever: "N"
• No-load 2,000
rpm 1.9-2.8 msec .
Idle 13-15° BTDC
IGN TIMING
ditto
2,000rpm Morethan25°BTDC
Idle 20-40%
IACV-AACIV ditto
2,000rpm

-

A/F ALPHA •Engine: Afterwarming up Maintaining
enginespeed
53-155%
at 2.000 rpm
AIR COND RLY •Air conditioner switch:OFF
-+
ON OFF
-+
ON
• Ignition switchis~urned toON (Operates for5seconds)
• Engine running andcranking ON
FUEL PUMP RLY
•When engine isstopped (stopsin1.0 seconds)
• Except asshown above OFF
Engine coolant temperature
is 94°C (201°F) orless for
AfT models. and99°C OFF
(210°F) orless for
M/T
mod-
els
• After warming upengine. idletheengine. Engine
coolant temperature
is between 95°C(203°F) and
COOLING FAN •Air conditioner switch:OFF
104°C(219°F) forA/T mod- LOW
• Vehicle stopped
elsonly
Engine coolant temperature
is 105°C (221°F) ormore for

A/T
models. and100°C HIGH
(212°F) ormore for
M/T

models
• Engine: Afterwarming up
IdleON
EGRC SOLIV •
Air conditioner switch:OFF
• Shift lever: "N"
• No-load 2.000
rpm OFF

EC-278

TROUBLEDIAGNOSIS -General Description
Major Sensor Reference GraphinData Monitor
Mode

•

SEF673Q

-00"09
+02"69

51,
38
THRTL
POSSEN

10:22 xO.1V

o
13 2,6

~
\

.

I
-00"09
+02"69

ON
OfF
Full {~
Release
Full {
Depress

The
following arethemajor sensor reference graphsin"DATA MONITOR" mode.
(Select "HISPEED" in"DATA MONITOR" withCONSULT.)

THRTL POSSEN, CLSD THLIPOSI

Below isthe data for"THRTL
pas
SEN" and"CLSD THLIPOSI" whendepressing theaccelerator pedal
with theignition switch"ON".
The signal of"THRTL
pas
SEN" should risegradually withoutanyintermittent droporrise after "CLSD
THLIPOSI" ischanged from"ON" to"OFF".

CLSD THUPOSI

10:22

CMPS.RPM (REF),MASAIR/FL SE,THRTL POSSEN, 02SEN, INJPULSE

Below isthe data for"CMPS.RPM (REF)","MASAIR/FL SE","THRTL
pas
SEN", "02SEN" and"INJ
PULSE" whenrevving quicklyupto
4,800
rpmunder noload after warming upengine sufficiently.
Each value isfor reference, theexact value mayvary.

E

c.

-8~

u..~

w><

0:

~

Q.
co_

o: ~

en
lO .....,..

Q.C\j

:EOio

()o •
....

,
.

.....
'"

,
...
,
...
""
..
,

............

<',••""", ..,.. ' ,
d _.
•
"CMPS'RPM{REF)" shouldincrease gradually
while depressing theaccelerator pedaland
should decrease graduallyafterreleasing
the pedal without anyintermittent droporrise,

>

:;re-
><

w

(J)

-"
....•

!o!::
C')_

0: ~

C{LO

(J)C\j

"",0>0

",,0
It.
/

....

.0"

.':

"'-",••'\o, "", .".~_•••• _ _.
•
"MAS AIRIFL SE"should increase when
depressing theaccelerator pedalandshould
decrease atthe moment "THRTLPOSSEN" is
closed (accelerator pedalisreleased),
SEF059P
EC-279

TROUBLEDIAGNOSIS -General Description
Major Sensor Reference Graphin
Mode (Cont'd)
m:J

Data Monitor

<0
,...

..-

0
<0
lO

0
~

9
0

+


"

l')

>
•
"THRTL pasSEN" should increase while

..-
<0

0
C\l

depressingtheaccelerator pedelandshould

z
x

w decreasewhilereleasing it.

en
en
l')

0
...

a..

...J ~

I-
lO

0:
C\l

:I:
Oi
0

A

I-
0

<0
,...

m.

0
<0

~ ~
C\l

+

C\l
0>

> 0
to

ci
C\l

X

.----v-.
_...:-------
•
''02 SEN" mayincrease immediately after
depressing theaccelerator pedelandmay

"""
.

decreaseafterreleasing thepedal .

<0

z

w
en
lO

I--
---....
---

C\l
C\l

Oi

0
00

A

<0
,...

0
<0

0

b
~
C\l

9
0

+

II)

c..>
:~.
w

en
;!-

~
•"INJ PULSE" shouldincrease whendepressing
w
II)

the
accelerator pedalandshould decrease

en
whenthepedal isreleased .
...J

j

~-

::>

a..
lO

'.
.-'\

C\l
\
.

~
Oi

z
0
0
A
SEF259QA
EC-280

TROUBLEDIAGNOSIS -General Description
ECM Terminals andReference Value
PREPARATION
1. ECM islocated behindthecenter console. Forthis
inspection, removethefront passenger centerconsole
panel.
2. Remove ECMharness protector.

•

MEF505D

!~
Thin wire TesterprobeJ

SEF3671
3.
Perform allvoltage measurements withtheconnectors con-
nected. Extendtesterprobeasshown toperform testseas-

ily.

ECM HARNESS CONNECTOR TERMINALLAYOUT
EC-281 SEF877K