1995 NISSAN ALMERA N15 Throttle

TROUBLEDIAGNOSES -General Description
Symptom MatrixChart(Cont'd)

SYMPTOM
J:
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SYSTEM
«

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0:
LU
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a:

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0
Z

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I-

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Reference

C/J
0
C/J

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- Engine mechanical
&
other
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page

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en
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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 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
•

TROUBLEDIAGNOSES -General Description
rnJ

ECM Terminals andReference Value(Cont'd)
TERMINAL WIRE
CONDITION
NO. COLOR ITEM
DATA
IEngine isrunning./ (Warm-up condition)
1.2-1.8V

L
Idle speed
16 ORorG Mass airflow sensor
IEngineisrunning.1 (Warm-up condition)
1.7-2.3V

L
Engine speedis2,000 rpm.
0-5.0V
18 BR/Yor
Enginecoolant temper-
IEngineisrunning.' Output
voltage varies
GY aturesensor with
engine coolant
temperature.
19 W Oxygen
sensor(Except IEngine
isrunning.1

o-
Approximately 1.0V
for Europe andIsrael)

L
After warming upsufficiently
Ilgnition switch"ON"I(Warm-up condition)
0.40-0.60V

L
Accelerator pedalreleased
20 Y Throttlepositionsensor
jlgnitionswitch"ON"I

L
Accelerator pedalfullydepressed Approximately
4V
For Israel
22 Camshaft
positionsen-
1.5-3.0V
30 L
sor(Reference signal:
IEngineisrunning.1
Except forEurope) Except
forIsrael
0.1 -0.4V
Ilgnition switch"ON'"
Approximately1.5V
24 ORIL Malfunction
indicator
lamp IEngineisrunning.1 BATIERY
VOLTAGE
(11 -14V)
27 W Knock
sensor (Except IEngine
isrunning.1
Approximately2.5V
for Europe andIsrael)

L
Idle speed
Camshaft positionsen-
L sor(Reference signal: 1.5-3.0V
For Europe)
31 IEngineisrunning.1
40 Camshaft
positionsen-

B/W
sor
(Position signal:
2.0-3.0V
Except forEurope and
Israel)
Ilgnitionswitch"ON"I
32 PUIR Vehiclespeedsensor
t

Eog'oe stopped aodgea, posit;oo
'S
"Neu- Variesfrom0to 5V
tral position".
While rotating drivewheel byhand
IEngine isrunning.1
BATIERY VOLTAGE

t
Rear window defogger switchis"ON".
(11-14V)
Electric loadswitch Lighting
switchis"ON".
33 R
IEngineisrunning.1

t
Rear window defogger switchis"OFF". OV
Lighting switchis"ON".
EC-84

TROUBLEDIAGNOSES -General Description @K]
ECM Terminals andReference Value(Conl'd)

TERMINAL WIRE
NO. COLOR ITEM
CONDITION
DATA
Ilgnition switch"ON"I
ApproximatelyOV
34 BIY Startsignal
pgnitionswitch"START"I BATTERY
VOLTAGE
(11 -14V)
pgnition switch"ON"I

t
"N" or"P" position
(A/T)
OV
Neutral position
(M/T)

Neutral position switchl For
Europe andIsrael
35
G/OR

Approximately5V
Inhibitor switch
llgnitionswitch"ON"1
ExceptforEurope and

. L
Except theabove gearposition Israel
BATTERY VOLTAGE
(11 -14V)
Ilgnition switch"OFF"!
OV
36 B/R Ignition
switch(Except
for Europe)
!Ignitionswitch"ON"I BA
TTERY VOLTAGE
(11 •14V)
37 P/L Throttle
position sensor
Ilgnitionswitch"ON"I
Approximately5V
power supply
38
W/R
Powersupply forECM Ilgnition switch"ON"I BA
TTERY VOLTAGE
47 (11
-14V)
IEngine isrunning.1

L
Both airconditioner switchandblower Approximately
OV
41 Gor GY Air
conditioner switch fan
switch are"ON".
!Engine isrunning.1
BATTERYVOLTAGE

L
Airconditioner switchis"OFF". (11
-14V)
IEngine isrunning.!
OV
PU/W Power
steering oilpres-
L

Steering wheelisbeing turned.
43 sureswitch
IEngineisrunning.1

L
Steering wheelisnot being turned. Approximately
5V
jlgnition switch"OFF"I OV
Ignition switch
44 B/R
(ForEurope) BA
TTERY VOLTAGE
pgnition switch"ON"I
(11-14V)
IEngine isrunning.1
Thermo controlamp.
L

Both airconditioner switchandblower fanApproximately
OV
44 R/L (Except
forEurope and switch
are"ON".
Israel) IEngineisrunning.1
BATTERYVOLTAGE

L
Airconditioner switchis"OFF". (11
-14V)
IEngine isrunning.1
ApproximatelyOV

L
Blower fanswitch is"ON".
45 LG/B
or
Blower fanswitch

G/Y
IEngineisrunning.!

L
Blower fanswitch is"OFF". Approximately
5V

EC-85
•

TROUBLEDIAGNOSIS FORNON-DETECTABLE ITEMS
Throttle Position Sensor

The throttle position sensorresponds tothe accelerator pedal
movement. Thissensor isakind ofpotentiometer whichtrans-
forms thethrottle position intooutput voltage, andemits the
voltage signaltothe ECM. Inaddition, thesensor detects the
opening andclosing speedofthe throttle valveandfeeds the
voltage signaltothe ECM.
Idle position ofthe throttle valveisdetermined
by
the ECM
receiving thesignal fromthethrottle position sensor.Thisone
controls engineoperation suchasfuel cut.

SEF089K

CIl
Supplyvoltage:

r
-i.~h __
~3_
i
45
I
'V ,Appl.' b....
ffi
t~miMI,
No1,,'
31

~_ =r--=-tfr ~
I

l ~
1
N~
I

Throttle position sensor g
-g

'5 ::: 0.5

0-

'5
0 0----- -_.- --------_.

OZ 0 90

Throttle valveopening angle(deg_)
EC-128 SEF520Q

TROUBLEDIAGNOSIS FORNON-DETECTABLE ITEMS~
Throttle Position Sensor(Cont'd)

EC-TPS-01

f
1

I I

I

t
I
JJ

I

I
I

I

I

I

I
THROTTLE
POSITION
SENSOR

@
@:

ForEurope andIsrae 1
_: Detectable line
for DTC
-: Non-detectable
line forDTC

•

ECM (ECCS
CONTROL
MODULE)

em

B

12"g
I

GND
-A
JOINT
CONNECTOR-6

@

I:
.-.----...f~:==:P:JI--- ..

P!L YB

~~um

AVCC TVOGND
-A

t

JXL@

BR
_
.. ~@

IIIillITIIIIl
GY

HEC035
EC-129