Gauge wire NISSAN ALMERA N15 1995 Service Manual

TROUBLEDIAGNOSES

Pressure Testing
• Location ofpressure testport.
• Always replace pressure plugsasthey areself-sealing
bolts.

Test portfor
line pressure governor
pressure

SAT565D
LINEPRESSURE TESTPROCEDURE

1. Check AfTand engine fluidlevels. Ifnecessary, addfluid.
2. Drive vehicle forabout 10minutes untilengine oiland ATF
reach operating temperature.
ATF operating temperature:
50 -80°C (122-176°F)

SAT647B
3.Install pressure gaugetoline pressure port.
4. Set parking brakeandblock wheels.
Continue todepress brakepedalfullywhile performing line
pressure testatstall speed.

SAT513G
5.Start engine andmeasure linepressure atidle and stall
speed. Line pressure:
Refer toSOS, AT-166.

JUDGEMENT OFLINE PRESSURE TEST

• Ifline pressure doesnotrise, firstcheck tomake surethat
throttle wireisconnected properly.
1) When linepressure whileidling
is
low atall positions ("D",
"2", "1", "R"and"P"), theproblem maybedue to:

SAT494G •
Wear oninterior ofoil pump

AT-26

GROUNDDISTRIBUTION
GROUND CONNECT
TO CONN.
NO. CELLCORD
F13/F14 DISTRIBUTOR
(CAMSHAFTPOSITIONSEN-
F24 EC-CMPS
SOR)
DISTRIBUTOR (POWERTRANSISTOR) F24EC-IGN/SG
ECM (ECCS CONTROL MODULE) F1EC-MAIN
IACV-FICD SOLENOID VALVE(GA16DE
F9EC-FICDHA-A/C
engine exceptforEurope andIsrael)
IACV-FICD SOLENOID VALVE(GAengine for
F11 EC-FICD
HA-A/C
Europe andIsrael andGA15DE engine)
SHIELD WIRE(CAMSHAFT POSITIONSEN-
F24 EC-CMPS
SOR)
SHIELD WIRE(HEATED OXYGENSENSOR) F23
EC-H02S
SHIELD WIRE(KNOCK SENSOR) (GAengine) F102
EC-KS
SHIELD WIRE(MASS AIRFLOW SENSOR)
(GA engine forEurope andIsrael and F12 EC-MAFS
GA15DE engine)
SHIELD WIRE(MASS AIRFLOW SENSOR)
(GA 16DE engine exceptforEurope andIsrael F27
EC-MAFS
and SRengine)
SHIELD WIRE(OXYGEN SENSOR) F22
EC-02S
SHIELD WIRE(THROTTLE POSITIONSEN-
F8 EC-TPS
SOR)
IACV-AIR REGULATOR E214
EC-AIRREG
IACV-FICD SOLENOID VALVE(SRengine) E212 EC-FICD
HA-A/C
SHIELD WIRE(KNOCK SENSOR) (SRengine) E215 EC-KS
E205 ALTERNATOR E233
EL-CHARGE EL-WARN
B11/B32 FRONT
DOORSWITCH (Driverside) B9RS-SRSEL-BUZZER
(Sedan) FUELPUMP B17
EC-F/PUMP
B11/B32/D105
(Hatchback) FUEL
TANK GAUGE UNIT B18EL-METEREL-WARN
HEATED SEATLH B12EL-H/SEAT
HEATED SEATRH B16EL-H/SEAT
HEATED SEATSWITCH LH B13
EL-H/SEAT
HEATED SEATSWITCH RH B15
EL-H/SEAT
REAR COMBINATION LAMPLH(TAIL AND
B27 EL-TAILILEL-STOP/L
STOP) (Hatchback)
REAR COMBINATION LAMPLH(TURN SIG-
B27 EL-TURN
NAL) (Hatchback)
REAR COMBINATION LAMPRH(TAIL AND
B28 EL-TAILIL
EL-STOP/L
STOP) (Hatchback)
REAR COMBINATION LAMPRH(TURN SIG-
B28 EL-TURN
NAL) (Hatchback)
HIGH-MOUNTED STOPLAMP (Inrear air
D112 EL-STOP/L
spoiler) (Hatchback)
HIGH-MOUNTED STOPLAMP (Onrear win-
D108 EL-STOP/L
dow) (Hatchback)
LICENSE PLATELAMPLH(Hatchback)
D107EL-TAILIL
LICENSE PLATELAMPRH(Hatchback)
D109EL-TAILIL
EL-23
•

METERANDGAUGES
~i5~
Combination meterconnector @ Inspection/Fuel
GaugeandWater Temperature
Gauge

y
INSPECTION
START
With tachometer

•

Repair
orreplace.
Refer toFE section. (Fuel
gauge)
Repair
orreplace gauge.
Check
thefollowing
items.
1) Harness continuity
between batterytermi-
nal and combination
meter
2) Ignition relay
3) Fusible linkand fuse
4) Ignition switch
NG
NG
~ Repair orreplace.
(Go to
@
onnext page)
OK
OK
CHECK COMPONENT. NG
Check gauge unitsandharness.
Refer to"Fuel TankGauge UnitCheck"
(EL-137) or"Thermal Transmitter
Check" (EL-137).
CHECK
GAUGE OPERATION.
1) Turn ignition switch"ON".
2) Connect terminals @(Fuel), @
(Temp.) andground withwire for
less than 10seconds.
3) Check operation ofgauge.
Gauge should movesmoothly tofull
scale.
CHECK HARNESS CONTINUITY
between terminals asfollows.
Continuity shouldexist.
CHECK
POWER SOURCE.
1) Turn ignition switch"ON".
2) Check voltage between terminal @
(with tachometer) or
@
(without
tachometer) andground.
Battery voltage shouldexist.
Terminals
Combi- Thermal Fuel
nation trans-
tank
meter miller
gauge
con- can-unit
con-
nector nector nectar
With @

(1)

tachometer
d) d)

Without @

(1)

tachometer @
d)

GEL005
GEL004
Voltmeter
Without tachometer

@:
Water temp.gauge

@:
Fuelgauge GEL003
[!J Combination meterconnectors @.@

~15 .

(With tachometer)@ Thermaltransmitter

rttEEifIEBl
connect~@TI)

{~u;:J9J
f
pu/
w
smma

(Without tachometer)@
~ DISCONNECT

l..m
IV Fueltank gauge
(With tachometer)
@
unitconnector
@ID

~]~rr
Lcru

I

,-------

I

mimEr")~

EL-133

ACCELERATORCONTROL,FUEL
&

EXHAUST SYSTEMS
SECTION
FE
CONTENTS
ACCELERATOR CONTROLSySTEM 2FUELSYSTEM 3

Adjusting Accelerator Wire 2FuelPump andGauge 4

EXHAUST SySTEM
5
•

•

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

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

HOWTOPERFORM EFFICIENT DIAGNOSIS FORANELECTRICAL INCIDENT
Circuit Inspection (Cont'd)
VOLTAGE DROPTESTS

Voltage droptests areoften usedtofind components orcircuits whichhaveexcessive resistance. A
voltage dropinacircuit iscaused byaresistance
whenthecircuit isin operation.

Check thewire inthe illustration. Whenmeasuring resistancewithohmmeter, contactbyasingle strand
of wire willgive reading of0ohms. Thiswould indicate agood circuit. Whenthecircuit operates, this
single strand ofwire isnot able tocarry thecurrent. Thesingle strand willhave ahigh resistance tothe
current. Thiswillbepicked upasaslight voltage drop.
Unwanted resistance canbecaused bymany situations asfollows:
Undersized wiring(single strandexample)
Corrosion onswitch contacts
Loose wireconnections orsplices.

If
repairs areneeded alwaysusewire thatisof the same orlarger gauge.

Measuring voltagedrop-Accumulated method

1. Connect thevoltmeter acrosstheconnector orpart ofthe circuit youwant tocheck. Thepositive lead
of the voltmeter shouldbecloser topower andthenegative leadcloser toground.
2. Operate thecircuit.
3. The voltmeter willindicate howmany voltsarebeing usedto"push" current through thatpart ofthe
circuit.

Note inthe illustration thatthere isan excessive 4.1volt drop between thebattery andthebulb.
Symptom: Dimbulb orno operation
Switch Connectionwith
high resistance

l ;

--

------------------~

--
\

~~~~ I

-, OVI

11.9V:
'I

I
Load)

--

12V
DMM
Battery
Ground

o

(zero) ohm
resistance
between switch
and bulb

t
•
__
Ground
SGI848
Measuring voltagedrop-Step bystep

The step bystep method ismost useful forisolating excessive dropsinlow voltage systems (suchas
those in"Computer ControlledSystems").
Circuits inthe "Computer ControlledSystem"operateonvery lowamperage.
The (Computer Controlled) systemoperations canbeadversely affectedbyany variation inresistance
in the system. Suchresistance variationmaybecaused bypoor connection, improperinstallation,
improper wiregauge orcorrosion.
The step bystep voltage droptestcan identify acomponent orwire withtoomuch resistance.

GI-26