sensor NISSAN ALMERA N15 1995 Owners Manual

TROUBLEDIAGNOSIS -General Description

Goto
(J.

Adjust ignition timingby
turning distributor.

No
NG

(Go to
@
onnext page.)

OK
CONNECT
CONSULTTOTHE VEHICLE.

Connect "CONSULT" tothe data link
connector forCONSULT andselect
"ENGINE" fromthemenu. Referto

EC-36
DOES ENGINE START?
BEFORE
STARTING

1. Check service records forany recent
repairs thatmay indicate arelated •
problem, orthe current needfor
scheduled maintenance.
2. 9pen engine hoodandcheck thefol.
lowing:
• Harness connectors forimproper con-
nections
• Vacuum hosesforsplits, kinks,or
improper connections
• Wiring forimproper connections,
pinches, orcuts

CHECK IGNITION TIMING.

1. Warm upengine sufficiently.
2. Stop engine anddisconnect throttle
position sensorharness connector.
3. Start engine.
4. Check ignition timingatidle using
timing light.

Ignition liming:

Refer toEC-36.
Basic
Inspection
Precaution:
Perform BasicInspection withoutelectrical or
mechanical loads

applied;
• Headlamp switchisOFF,
• Air conditioner switchisOFF,
• Rear defogger switchisOFF,
• Steering wheelisin the straight-ahead position,etc.

m

\\

~
~ SEF1421

~use box

~-~

vll-JI-
Datalinkconnector~'

EC-65

@

(Go tonext page)

(;]

1

CHECK IDLEADJ. SCREW INITIALSET
NG
Adjust engine speedby

~
RPM.
turning
idleadjusting

Base idlespeed: RefertoEC-36.
screw.

II
t
K

CHECK THROTTLE POSITIONSENSOR
NG
Adjust output
voltage
to

~
IDLE POSITION.
0.50

:l:
0.1V byrotating

00
1.
Perform ''THRTlPOSSEN throttle
position sensor
ADJ" in"WORK SUPPORT" body.
mode.
2. Check thatoutput
voltage
of
throttle position sensoris
approx. 0.35to0.65V (Throttle

valve
fullycloses.) and"ClSD
THlIP SW"stays "ON".
OR

00
Measure
output
voltage
ofthrot-
tle position sensorusing

voltmeter,
andcheck thatitis
approx. 0.35to0.65V. (Throttle

valve
fullyclosed.)
OK

RESETIDLEPOSITION
MEMORY.

1. Warm upengine suffi-
ciently.
2. Turn ignition switch
"OFF" andwait at
least 5seconds.
3. Disconnect
throttle
position sensorhar-
ness connector.

4.
Start
engine andwait
at least 5seconds in
"N" position .
5. Reconnect throttle
position sensorhar-
ness connector while
running engine.

TROUBLE
DIAGNOSIS -General Description
Basic Inspection (Coni'd)
@

• THRTl POSSEN ADJ.
0

* **
ADJ MONITOR
***

THRTL POSSEN 0.52V

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

CMPS.RPM (REF)Orpm
CLSD THLIPOSI ON

SEF516Q
SEF12BR EC-66

TROUBLEDIAGNOSIS -General Description

*
MONITOR
*
NO FAIL
ENG TEMP SEN 80°C

RECORD

Cam follower
lever
o

SEF214N
SEF147N Fast
IdleCam (FIC) Inspection andAdjustment
- For Europe andIsrael

1. Start engine andwarm itup.

(ij\
2.See "ENG TEMP SEN"or"COOLAN TEMP/S"in
~ "DATAMONITOR" modewithCONSULT.
3. When engine coolant temperature is80:l: 5°C
(176:l:9°F), makesurethatmark @isaligned with
mark ~asshown inthe figure.

SEF536H •
2.
Disconnect enginecoolant temperature sensorhar-
ness connector andcheck resistance asshown in
the figure.
3. When theresistance ofengine coolant temperature
sensor is0.26 to0.39 kQ,make surethatmark @is
aligned withmark
@
asshown inthe figure.
If NG, adjust byturning adjusting screw.

Adjusting serewtightening torque:
0.98 -1.96 N.m(10-20 kg-em, 8.7-17.4 in-Ib)
Cam follower
lever Fast
idleearn
Thermo-
element
SEF148N
4.
Stop engine.

rF.i\
5.Turn ignition switch"ON"andsee "ENG TEMP
~ SEN"or"COOLAN TEMP/S"in"DATA MONITOR"
mode withCONSULT.
6. When engine coolant temperature is25:l: 5°C
(77:l: 9°F), make surethatmark
CID
isaligned with
mark @asshown inthe figure.
~ 5.When theresistance ofengine coolant temperature
~ sensoris1.65 to2.40 kQ,make surethatmark
CID
is
aligned withmark
@
asshown inthe figure.
• IfNG, replace thermo-element andperform theabove
inspection andadjustment again.

Fast IdleCam (FIC) Inspection andAdjustment
- Except forEurope andIsrael

1. Remove throttlebodyfromengine.
2. Wait foratleast 3hours.
(This stepisnecessary tobring thetemperature ofthe
thermo-element tothe room temperature

EC-68

TROUBLEDIAGNOSES -General Description
Symptom MatrixChart(Cont'd)

SYMPTOM
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C)

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0

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i=

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ll.

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a:
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(f)

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ll.

i=
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ll.
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ll.

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a:
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9
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u.

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(f)
a:

SYSTEM
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a
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Reference

(f)
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(f)

Cl

- ECCS system
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w

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page

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Cl

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(f)

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in in

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AA ASAC AD AEAFAG AH AJAK ALAM HA
ECCS Camshaft
positionsensorcircuit

•••
0
0
()

0 0
EC-94
Mass airflow sensor circuit

••
•
0

•
••

•
EC-101
(Heated) oxygensensorcircuit

••
0

• •
•

•
EC-189,194
Engine coolant temperature sensor

••
•
0

••
•

•
•
•
EC-108
circuit
Throttle position sensorcircuit

•• ••• ••
•
EC-128
Incorrect throttleposition sensor

•
()
()

•
0
0

•
()

EC-65
adjustment
Vehicle speedsensor circuit
0
C)
()

0
EC-133
Knock sensor circuit

000 0
EC-119
ECM
0
()

0 0
()

0
()

()()

0 0
EC-64
Start signal circuit
0
EC-138
Park/Neutral positionswitchcircuit

0
0
0
0

0
EC-173
Power steering oilpressure switchcir-

0
(J

0
EC-169
cuit
• ;High Possibility Item

0;
Low Possibility Item

EC-72
(continued
onnext page)

TROUBLEDIAGNOSES -General Description
Symptom MatrixChart(Cont'd)

SYMPTOM
J:
Z
CJ

~
0

I

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i=

LU

cL
I-
«

a:
a: ::J
UJ

0
0

LU

I-
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CJ

><
D..

-'

«
0

z

a:
~

LU

i=
0

z
0
a:

«

I-
0
0
LULU

D..

i=
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I-
«

-'
D..

:2
D..

0

0:
-'
i=
«

9
:2

::J

:2

SYSTEM
«

LL

«

0:
LU
C/J
a:

I-
0
Z

0
CJ

0
I-

Z
::J

LU
Reference

C/J
0
C/J

0

- Engine mechanical
&
other
z

0
LU

Z

I-
0

LU

I-
-'
0:

Z
Z
page

0:
(3

LU
D..

9
i=

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LU

0

0

2-

;:::
a:
0

a:
z

0
a:
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-'
0

0:
::J
~
LU

5:
::J

i=
::J

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LU

-'
0

-'
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5:

«

-'
C/J

0
5:

0
«
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::J
(5
«

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W

LU

en
LL

LU

C/J
«

00

-'
-'
a:
a:
0

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0
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D..

W
CD

I-
LU
LU

0
C/J

i=
~

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-'
9

:>
0

«

>

~

>-

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0
Z

LU

(ij

C/J
a:

LU

«
~
9
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CJ

~
C/J
C/J

LU

I-
0:
~
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a:

LU LU

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LU

D..

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0

-'
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LU
J:

C/J

-'
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a:
9

C/J
0
LU LU
CD

AA ASAC AD
AEAF
AG AH AJAK ALAM HA
Fuel Fueltank

0
U

Fuel piping

00 0
()

0 00 0

Vapor lock
U

Valve deposit

00 000 00
0

Poor fuel(Heavy weightgasoline, Low

0
C)

0 0
()

00
0
-

octane)
Air Airduct
00 0
00
0

Air cleaner

00
0
0
0
0

Air leakage fromairduct

()
(J
()

()

0
0
0 0
("

)

C'

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

••• •
••
•• •
FE
section
Air leakage fromintake manifold/

0
•
(~)

0
tJ

0
U
C;

U
-

Collector/Gasket
Cranking Battery
0

U
()

(J

00 0
':J

Alternator circuit
()

0
0
0
(J

0 0
(J

ELsection
Starter circuit

•

Flywheel
•
-

Clutch interlock switch
0
CL
section
Inhibitor switch
()

ATsection
Engine Cylinderhead

••
• •

• •
•
()

Cylinder headgasket

••
0
0

•
U

()

0
()

C'

Cylinder block

•
0

0 0

0
()

(J

0
0

Piston
••
0

•
(J

()

()
()

0

Piston ring

•
U

00
0
U
()

U
()

Connecting rod
('

0
0
00
)

U
(

)

Bearing
(i

0
()

0
()

U
0

C

Crankshaft
Cl

(~)

0 0
()

()

0
0

Valve Timingchain

•••
CJ

•
n

()

('

mechanism Camshaft

•••
0
0

•
•
0

Intake valve

•
0

0

•
0

()

':J
0

l~'

Exhaust valve

•
C)

0
()

()

U
u
()

0

HydraUlic lashadjuster
00
0
0
()

()

0
-

Exhaust Exhaust
manifoldlTube/Muffler/Gasket
C)

c:
()
()

0
U
()

U

Three waycatalyst

••
0

U

0 0
()

0

Lubrication Oil
pan/Oil strainer/Oil pump/Oilfilter/
•
Ci

0 0

0

•
•
()

0

Oil gallery
Oil level (Low)/Filthy oil
()

0
()
()()

(J

0
U
()

Cooling Radiator/Hose/Radiator
fillercap
()

0 0
()

()

C)

U
U
()

Thermostat
00
0
0
C)

0
()

00
0
Cl

Water pump
u

0
U
0
0
()

Ci
C)

U

Water gallery
U
()

0
()

0 0
U

0
U

Cooling fan
0
()

CJ
U
0
U
I)

U
()

CJ
(i

Coolant level(low)/Contaminated cool-

U
0
0 0
0
00
()

)

ant
• ;High Possibility Item

U;
Low Possibility Item

EC-73
•

TROUBLEDIAGNOSES -General Description
CONSULT ReferenceValueinData 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, and theon-board diagnostic systemresultsareOK, when
diagnosing themass airflow sensor, firstcheck tosee ifthe fuel pump control circuitisnormal.

MONITOR ITEM
CONDITION SPEC
IFICA TION
CMPS.RPM (REF)•
Tachometer: Connect Almostthesame speed asthe CON-
• Run engine andcompare tachometer indicationwiththeCONSULT value.SULT value.
• Engine: Afterwarming up
Idle 1.0
-1.7V
MAS AIRIFL SE •
Air conditioner switch:OFF
• Shift lever: "N"
• No-load 2,000
rpm 1.5
-2.1V
COOLAN TEMPIS •Engine: Afterwarming up More
than70°C (158°F)
02 SEN 0-
0.3V
<-+
0.6 -1.0V
• Engine: Afterwflrming up Maintaining
enginespeedat2,000
LEAN
<-+
RICH
MIR
FIC
MNT rpm
Changesmorethan5times
during 10seconds .
VHCL SPEED SE•
Turn drive wheels andcompare speedometer indicationwiththeCONSULT Almost
thesame speed as
value the
CONSULT value
SA TTERY VOLT •Ignition switch:ON(Engine stopped) 11
-14V
• Ignition switch:ON Throttle
valvefullyclosed 0.35
-0.65V
THRTL POSSEN
(Enginestopped)
Throttlevalvefullyopened Approx.
4.0V
ST ART SIGNAL •Ignition switch:ON
-->
START
-->
ON OFF

-->
ON
-->
OFF
Throttle valve:
ON
• Ignition switch:ON Idle
position
CLSD THLIPOS
(Enginestopped)
Throttlevalve:
OFF
Slightly open

AIC
switch "OFF" OFF
AIR COND SIG •
Engine: Afterwarming up,idle the
engine
AIC

switch "ON"
ON
(Compressor operate&)
Shift lever "P"or"N" ON
PIN POSI SW •Ignition switch:ON
Exceptabove OFF

EC-74

TROUBLEDIAGNOSES -General Descrip_ti_o_n
I_G_A_'

Major Sensor Reference GraphinData Monitor
Mode

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".

Full {~

Release

Full {

Depress CLSD
THUPOSI

10:22

OFF
-00"09
+02"69

ON

I
THRTL
POSSEN

10:22 XO.1V

o
13 26 38

~ \

'
..
-00'09
+02'69

51,
SEF673Q
CMPS,RPM (REF),MASAIR/FL SE,THRTL POSSEN, 02SENSOR, INJPULSE

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

:
..

./
.•.•.....•.
,

........... .........
.................................... _
.......
__._
....

E

0-

C5
C\J -

LL~C?

wX
a:
~

a..
co_

a: ...

ci>
1l) .,_,.

a..C\J

;:a"

(.)~o
L.-r-... ------------------
o
"CMPSoRPM(REF)" shouldincrease gradually
while depressing theaccelerator pedaland
should decrease graduallyafterreleasing
the pedal without anyintermittent droporrise.

CO" ...

OCOIt)

gg
, +
CD-

C')

o"MAS AIRIFL SE"should increase when
depressing theaccelerator pedalandshould
decrease atthe moment "THRTLPOSSENu is
closed (accelerator pedalisreleased).

,..
.... -..._••,. •••• \•••• ,.. _ ...... ~ .._ ..._- ......"¥'.,. ..."""""' ..._.... _.._ ... _..- .... _.

...

/
....

.':

>

... co

~C\J

W

C/)

-J ....'

~ ~-


C/)C\J

< ..

.., 0)0
L.r--------------------

"",,0 ...

SEF059P
EC-76

TROUBLEDIAGNOSES -General Description
Major Sensor Reference Graphin
Mode (Cont'd)
mJ

Data Monitor

cD
....

-

0
cD
ll)

0
~

9
0

+

co
,.
.....

M

>
•
"THRTL pasSEN" should increase while
~
re

depressingtheaccelerator pedelandshould

z

w decreasewhilereleasing it.

en
en
M

•

0

0..

-'
-'

b:
ll)

C\l

:r:
a;

0

A

t-
o

cD
....
cD

0
cD
ll)

b
~
C\l

9
0

+

C\l

C1l
-

>

<3
IX)

ci
C\l

><

.~. ._----•
''02 SEN" mayincrease immediately after

-
-

-
-

depressing theaccelerator pedelandmay

v
decreaseafterreleasing thepedal.

cD

z

w

--

en

ll)

-
.......

C\l C\l

0
a;

0
A

0

cD
....

0
cD
0

b
~
C\l

9
0

+

ll)

u
:~.

w

en
0
:!

-

•"INJ PULSE" shouldincrease whendepressing

w
ll)
the
accelerator pedalandshould decrease

en
whenthepedal isreleased.

-'
j

~---

::>

a.
ll)

'.
I
."""\

C\l
\

..,

a;
0

z

0
A

SEF259QA
EC-77

TROUBLEDIAGNOSES -General Description ~
ECM Terminals andReference Value(Cont'd)

TER- WIRE
MINAl ITEM CONDITION DATA
NO. COLOR
/'gnitionswitch"ON'" Approximately
50mV
18 OR/l Malfunction
indicator

I
Engine isrunning.
I

lamp BATTERY
VOLTAGE

L
Idle speed (11.14V)
19 BIW ECCS
ground
I

Engine isrunning.
I

Engineground

L
Idle speed
I'gnition switch"ON"
I

ApproximatelyOV
20 BIY
Startsignal
BATTERYVOLTAGE
I'gnition switch"5TART"
I

(11-14V)

I
Engine isrunning.
I

L
Both airconditioner switchandblower Approximately
OV
21 G Airconditioner switch switch
are"ON" (Compressor operates)
IEngine isrunning.
I

BATTERYVOLTAGE

L
Airconditioner switchis"OFF" (11
-14V)
I'gnition switch"ON'"

t
Ge.,
po,"'on "
"Ne"".1
po,ltlon"
(MIT

Approximately OV
Neutral position switch models)

(M/T
models) Gear
position is"N" or"P"
(A/T
models)
22
G/OR

Inhibitorswitch
(A/T AIT

models:
models) llgnitionswitch"ON'" BATTERY
VOLTAGE

L
Except theabove gearposition (11
-14V)

M/T
models:
Approximately 5V
Ilgnition switch"ON"
I

0.35-0.65V

L
Accelerator pedalreleased
23 Y Throttleposition sensor
!'gnitionswitch"ON"
I

L
Accelerator pedalfullydepressed Approximately
4V
/Engine isrunning.1
ApproximatelyOV
25 Pu/W Power
steering oilpres-
L

Steering wheelisbeing turned
sure switch
IEngineisrunning.1

L
Steering wheelisnot being turned Approximately
5V

I
Engine isrunning.
I

Approximately
26 PUIR Vehiclespeedsensor

L
Front ofvehicle raisedandfront wheels are
1.8-2.4V (ACvoltage)
rotating

I
Engine isrunning.
I

ApproximatelyOV
Torque converter clutch
L

Idle speed
30 PIB
solenoidvalve

I
Engine isrunning.
I
(Warm-up condition)

(A/T
models only)

L
Vehicle speedis64 km/h (40MPH) ormore BATTERY
VOLTAGE
(11-14V)
in "D" position
35 lG/B Blower
fanswitch I,gnition
switch"ON",
ApproximatelyOV

L
Blower fanswitch is"ON"

EC-80

TROUBLEDIAGNOSES -General Description ~
ECM Terminals andReference Value(Cont'd)

TER-
MINAL WIRE
CONDITION
ITEM DATA
NO. COLOR
Ilgnitionswitch"OFF"1
OV
38 BIR
Ignitionswitch
BATTERYVOLTAGE
llgnition switch"ON"!
(11-14V)
39 B ECCSground
I

Engine isrunning.
I

Engineground

L
Idle speed
40 l Camshaft positionsen- I
Engine isrunning. I
Approximately2.7V
44 l sor(Reference signal)

L
Idle speed (AC
voltage)
i'gnition switch"ON'"
ApproximatelyOV
42 PUlW IACV-AAC valve(Close) IEngine
isrunning.
I
(Warm-up condition)
BATTERYVOLTAGE

L
Engine speedis2,000 rpm. (11
-14V)

I
Engine isrunning.
I
Engine
ground
43 B ECCS
ground (Probe
thisterminal with

L
Idle speed
e

tester probe when
measuring.)
41
B/W
Camshaft positionsen- IEngine
isrunning.1
Approximately2.7V
45
B/W
sor
(Position signal)

L
Idle speed (AC
voltage)

I
Engine isrunning.
I

o-
Approximately 1.0V
46 W Oxygen
sensor

L
After warming upsufficiently andengine
(periodicallychange)
speed is2,000 rpm.

I
Engine isrunning.
I
(Warm-up condition)
1.0-1.7V

L
Idle speed
47 OR Massairflow sensor

I
Engine isrunning.! (Warm-up condition)

L
Engine speedis2,000 rpm. 1.5
-2.1V
48 W Mass
airflow sensor
I

Engine isrunning. I(Warm-up condition)
0.005-0.02V
ground
L
Idle speed
49 P/l Throttle
position sensor
j!gnitionswitch"ON"I Approximately
5V
power supply
50 B Sensors'
ground
I

Engine isrunning.
I
(Warm-up condition)
0.001-0.02V

L
Idle speed
0-4.84V
51 BRIY Engine
coolant tempera-
1Engine isrunning.
I
Output
voltage varies
ture sensor with
engine coolant tem-
perature.
54 W Knock
sensor
I

Engine isrunning.!
2.0-3.0V

L
Idle speed
Ilgnition switch"ON'"
ApproximatelyOV

L
Rear defogger is"OFF".
55 LlR Rear
defogger relay
Ilgnitionswitch"ON"I
BATTERY VOLTAGE

L
Rear defogger is"ON". (11
-14V)
56
W/R

Ilgnitionswitch"ON"I BA
TTERY VOLTAGE
61
W/R
Power
supply forECM
(11-14V)

EC-81
•