1995 NISSAN ALMERA N15 check engine

STARTINGSYSTEM
Trouble Diagnoses
If any abnormality isfound, immediately disconnectbatterynegative terminal.

Starter doesnotstop.
Engine doesnotstart. Replace
magnetic switch.
Does engine turnbycranking? Doesengine turnnormally? Check
ignition/fuel system.
No No
(Turns slowly.)
Check battery asfollows:
OK

Repairstarter motor.
• Charging condition
• Terminal connections
• Terminal corrosion
NG

@

Does starter motorturn? Yes
Doesgearshaft turn? Checkpinionclutch.
No No
Check reduction gear,armature
and gear shaft.
Check fuseandfusible link. Replace.

OK

Check battery asfollows:
@

• Charging condition
• Terminal connections
NG
• Terminal corrosion •
Charge battery.
• Repair connections andcorro-

OK
sian
ofbattery terminals.
Check starting systemwiring.
Repair.

OK

Does magnetic switchoperation No
Replace magnetic switch
sound occur?
Yes
Check condition ofpinion and
OK

Doesstarter turnunder noload Yes
Replace magnetic switch.
ring gear mesh.
byconnecting wiresasfollows?
NG

•

• Adjust pinionmovement.
Repairstarter motor.
• Check pinionmoving mecha-
nism .
• Check ringgear.

SELOO9Z

EL-35

CHARGINGSYSTEM
Trouble Diagnoses

Before conducting analternator test,make surethatthebattery isfully charged. A3D-volt voltmeter and
suitable testprobes arenecessary forthe test. Thealternator canbechecked easilybyreferring tothe
Inspection Table.

Before starting, inspectthefusible link.
WITH IeREGULATOR

Burned-out
bulb.
Replace and
proceed to

"@".

Light "ON"
Light "OFF"
Connect
connector (S,
L) and
ground F
terminal
Engine
speed: 1,500 rpm
(Measure B
terminal
voltage)
Make sure
connector (S,L)is
connected
correctly.

(HITACHI

make)
'See
4)for grounding Fterminal.
(MITSUBISHI
make)
Check or
replace drive
belt.
Light "ON"
Light "OFF"
Disconnect
connector (S,
L) and
ground L
lead wire.
Engine
speed:
1,500 rpm
Lighting
switch "ON"
With
alternator sideLterminal
grounded. internalshortoccurs
when
+
diode isshort-circuited.
Light "ON
Dim
light
Light flickers
Bright light
Light
"ON"
Light
"OFF"
Ignition
switch "ON"

@

1) Use fully charged battery.
2) light: Charge warning light
ACG :Alternator partsexcept I'Cregulator
IC-RG :IC regulator
OK :IC-alternator isingood condition.
3) When reaching "Damaged ACG",remove
alternator fromvehicle anddisassembly, inspect
and correct orreplace faultyparts.
4) *Method ofgrounding Fterminal (HITACHI make
only)
Gasoline enginemodel
Contact tipofwire withbrush andattach
wire toalternator body.
~~~
;;z..'~~.~

~~~/j
S$.~~'
s<(r~, -
Brush liftwire

;;.. ~ Q<:::z"d,l'T7.

~ .. ~ ~-)o,IJ!"-f/

- -~~ C);
0~~/

'~-/i ~-,~

-~j~n

- <::::; -~ \•

'" 1A/-'

SEL030Z
5) Terminals
"S","l","B"
and
"E"
aremarked onrear cover ofalternator.
EL-54

METERANDGAUGES
Inspection/Fuel GaugeandWater Temperature
Gauge (Cont'd)

Fuel tank gauge
unit connector
@W

~
S

GEL006
~i)~

Combination meterconnector@

8mIIEJ
y

GEL007

~i3ID

Combination meterconnector
@

w1i7h:n
Check
harness continuity betweenfuel
tank gauge unitharness terminal
@

and body ground.

Continuity shouldexist.
OK

Reinstall anypart removed.
INSPECTION END

Inspection/Tachometer
INSPECTION START

m
CHECK POWER SOURCE.
1) Turn ignition switch"ON".
2) Check voltage between terminal
@

and ground.

Battery voltage shouldexist.
OK NG
NG
Repair
harness orcon-
nector.
Check thefollowing
items.
1) Harness continuity
between batterytermi-
nal and combination
meter
2) Ignition relay
3) Fusible linkand fuse
4) Ignition switch

LlOR
SIR
GEL008
CHECK
ECMOUTPUT. NG
1) Start engine.
2) Check voltage between terminals
@

and
@
atidle and 2,000 rpm.

Higher rpm
=
Higher voltage
Lower rpm
=
Lower voltage
Voltage shouldchange withrpm.

Replace tachometer.
INSPECTION END

EL-134
Check
harness andcon-
nector between ECMand
combination meter,or
check ground.

Ohmmeter- + WARNING
LAMPSANDBUZZER
Oil Pressure SwitchCheck
Oil pressure
Continuity
kPa (bar, kg/cm
2,
psi)
More than10-20
NO
Engine
start
(0.10-0.20, 0.1-0.2, 1.4-2.8)
Less than10-20
YES
Engine
stop
(0.10-0.20, 0.1-0.2, 1.4-2.8)
SEL748K
Test lamp 3.4WON

\ ,I

"
/

Ballery
Test lamp 3.4W OFF

~0
CD

Ballery
Gasoline MEL623D
SEL901F
Check
thecontinuity betweentheterminals ofoil pressure
switch andbody ground.

Fuel Warning LampSensor Check

• Itwill take ashort timeforthe bulb tolight.

Diode Check

• Check continuity usinganohmmeter.
• Diode isfunctioning properlyiftest results areasshown in
the figure atleft.

NOTE:

Specification mayvary depending onthe type oftester. Before
performing thisinspection, besure torefer tothe instruction
manual forthe tester tobe used.

• Diodes forwarning lampsarebuilt intothecombination
meter printed circuit.

Refer to"Combination Meter"(EL-127).
Warning BuzzerUnit

• Seat beltwarning lampiscontrolled bythe warning buzzer
unit.

Refer to"Warning Buzzer"(EL-152).
EL-151
•

NATS(Nissan Anti-Theft System)
Trouble Diagnoses
WORK FLOW

I
CHECK
IN

Listen tocustomer complaints orrequest. (Getsymptoms) 'MIL:
Malfunction IndicatorLamp
KEY SERVICE REQUEST (Additional keyIDregistration)
TROUBLE

I
Verify theblinking ofMIL'.
(RefertoCONSULT operation
manual NATSV2.0.)
Using theCONSULT programcardforNATS check the
"SELF-DiAG RESULTS"withCONSULT.
Self-diagnostic resultsreferring toNATS, butnoinformation
about engine self-diagnostic resultsisdisplayed onCON-
SULT.

I
Turn ignition switch"OFF".

t

Repair NATS.
(If necessary, carryout"SELF-FUNCTION CHECK"or
"C/U

INITIALISATION" withCONSULT.) Self-diagnostic
resultsreferring toNATS and"DON'T
ERASE BEFORE CHECKING ENGDIAG" aredisplayed on
CONSULT.
(This means thatengine trouble datahasbeen detected in
ECM.)
Turn ignition switch"OFF".

I
Turn ignition switch"ON".

I
Repair
NATS.
(If necessary, carryout"SELF-FUNCTION CHECK"or
"C/U

INITIALISATION" withCONSULT.)
Erase theNATS "SELF-DIAG RESULTS"byusing CON-
SUL T.(Touch "ERASE")

I
Start theengine.
NG Verify noblinking ofMIL'.

OK

I
CHECK OUT

-

Perform runningtestwith CONSULT inengine SELF-DiAG
RESULTS" mode.
NG Verify "NOFAILURE" displayedonthe CONSULT screen.

OK

I
CHECK OUT
Don't
erase theNATS "SELF.DlAG RESULTS"byusing
CONSULT.

I
Start theengine.
Verify noblinking ofMIL'.

OK

I
Turn ignition switch"OFF".

~

Check theengine "SELF-DiAG RESULTS"withCONSULT by
using theCONSULT genericprogram card.
(Engine diagnostic softwareincluded)
Repair ECCS.(RefertoEC section.)

I
Turn ignition switch"ON".
Erase theengine "SELF-DIAG RESULTS"byusing CON-
SUL T.(Touch "ERASE".)

I
Start theengine.
NG

•

EL-251

NATS(Nissan Anti-Theft System)
Trouble Diagnoses (Cont'd)
CONSULT DIAGNOSTIC TESTMODE FUNCTION

CONSULT DIAGNOSTIC TEST
MODE

C/U
INITIALIZATION
SELF-FUNCTION CHECK
SELF-DIAGNOSTIC RESULTS Description
When replacing anyofthe following threecomponents,
C/U
initialization isnecessary.
[NATS ignition key/lMMU/ECMj
ECM checks itsown NATS communication interfacebyitself.
Detected items(screen terms)areasshown inthe chart below.

SELF-DIAGNOSTIC RESULTSITEMCHART

Detected items(Screen terms) Description Reference
page
IMMU ECMreceived thesignal fromIMMU thatIMMU ismalfunctioning. EL-257
ECM ECMismalfunctioning. EL-257
CHAIN OFECM-IMMU CommunicationimpossiblebetweenECMandIMMU. EL-258
DIFFERENCE OFKEY IMMU
canreceive thekey
10
signal butthe result ofID verification
EL-260
between keyIDand IMMU isNG.
CHAIN OFIMMU-KEY
IMMUcannot receive thekey IDsignal. EL-261
ID DISCORD, IMM-ECM The
result of
10
verification betweenIMMUandECM isNG. System
EL-263
initialisation isrequired.
MINGLE NOISE Noise
(interference) mingledintoNATS communication linesduring
EL-264
communicating.
DON'T ERASE BEFORE CHECK-
Enginetrouble dataandNATS trouble datahave beendetected in
EL-264
ING ENG DIAG ECM.

EL-254

NATS(Nissan Anti-Theft System)
Trouble Diagnoses (Cont'd)

SYMPTOM
SYSTEM REFERENCEPART Displayed"SELF- DIAGNOSTIC
PROCE-
(Malfunctioning NO.OFILLUSTRA-
•Blinking ofMIL*. •
Blinking ofMIL *.
DIAGRESULTS" on DURE
part ormode)
TIONONNEXT PAGE
•Engine willstart. •
Hard tostart
CONSULTscreen. (Reference
page)
engine.
System initialisation
has notyetbeen
F X

10
DISCORD, IMM- PROCEDURE 6
completed. ECM(EL-263)
ECM F X
Noise interference in
XMINGLE
NOISE PROCEDURE
7
communication line (EL-264)
Engine trouble data
DON'TERASE
and NATS trouble
BEFORECHECKING WORK
FLOW
data have been X
X
(EL-251)
detected inECM ENG
DIAG

SYMPTOM MATRIXCHART2
(Non self-diagnosis relateditem)

X:Possibility item
SYSTEM SYMPTOM
DIAGNOSTIC
PROCE-
(Malfunctioning partormode) DURE
NATS security indodoes notlight up.
(Referencepage)
NATS security indo
Open circuit between FuseandNATS IMMU
PROCEDURE8
X (EL-264)
Continuation ofinitialisation mode
NATS IMMU

DIAGNOSTIC SYSTEMDIAGRAM

NATS antenna amp.
PART
0 Key10chip (PART E5)

i-------
L---
--j)))

:
.

, ,

I~ .'

(((

NATS ignition

key
PART
E1,E2,E3, E4 IGN
PART C2~ +1./PART C1(MIL)
PART C4
ECM

..
........

................
:'

.......

PART F

D
IGN

EL-256
CONSULT

SEL466U

NATS(Nissan Anti-Theft System)
Trouble Diagnoses (Cont'd)
• SELF-FUNCTION CHECK•
ECM's IMMU
COMMUNICATION INTERFACE

II
***
***
11[!1
******

___ P_R_IN_T
I

SEL342U
• SELF-FUNCTION CHECK•
ECM's IMMU
COMMUNICATION INTERFACE

******
OK
******

___ P_RI_N_T '

SEL343U IMMU
ismalfunctioning.
Replace IMMU.
Ref. part No.A

00
Perform
initialisation withCON-
SULT.
For theoperation of
initialisation, referto"CONSULT
operation manualNATSV2.0".

m
•SELF-DIAG RESULTS.
0

FAILURE DETECTED TIME
DIFFERENCE OFKEY
0

I
ERASE

"
PRINT

I

SEL344U

ERASE
II
PRINT
I

SEL372U

•

C/U
INITIALISATION
INITIALISATION
STOPPED orFAILED
TURN IGNKEY SW"OFF"
AND "ON" AFTER CON-
FIRMING SELF-DIAG
RESULTS, PERFORM C/U
INITIALISATION AGAIN.
•
DIAGNOSTIC
PROCEDURE 4
Self-diagnostic results:
"DIFFERENCE OFKEY" displayed onCONSULT screen

m

00
Confirm
SELF-DIAGNOSTIC
RESULTS "DIFFERENCE OF
KEY" displayed onCONSULT
screen.

t
K
Initialisation

I!J

incompleted •

00
Perform
initialisation withCON- or
failed
IMMUismal-
SULT . with
CON-
functioning.
Re-register allNATS ignition keySULT
ReplaceIMMU.
IDs. Ref.
part No.A
For theoperation ofinitialisation,
refer to"CONSULT operation
manual NATSV2.0".
l,nitialisation completed
Start engine.

~

END
00
Perform
initial isa-
(Ignition keyIDwas unregistered.) tion
with CON-
Ref. part No.0 SULT.
For theoperation
of initialisation,
refer to"CON-
SUL Toperation
manual NATS
V2.0"
EL-260