1995 NISSAN ALMERA N15 stop start

Fluidleakage TROUBLE
DIAGNOSES
Preliminary Check(PriortoRoad Testing)
AIT FLUID CHECK
Fluid leakage check

1. Clean areasuspected ofleaking, -for example, mating
surface ofconverter housingandtransmission case.
2. Start engine, applyfootbrake, placeselector leverin"0"
position andwait afew minutes.
3. Stop engine.
4. Check forfresh leakage.

SAT288G
Fluidcondition check
Fluid levelcheck -Refer toMA section (CHASSIS AND
BODY MAINTENANCE).
Fluid
color
Oark orblack withburned odor
Milky pink
Varnished fluid,lighttodark brown
and tacky Suspected
problem
Wear offrictional material
Water contamination
- Road water entering through
filler tubeorbreather
Oxidation
- Over orunder filling
- Overheating

•

Road Testing

Perform roadtests using "Symptom" chart.Refertopage

AT-20.

"P"
POSITION

1. Place selector leverin"P" position andstart engine. Stop
engine andrepeat theprocedure inall positions, including
neutral position.
2. Stop vehicle onaslight upgrade andplace selector leverin
"P" position. Releaseparkingbraketomake surevehicle
remains locked.

"R"
POSITION

1. Manually moveselector leverfrom"P"to"R", andnote
shift quality.
2. Drive vehicle inreverse longenough todetect slippage or
other abnormalities.

"N"
POSITION

1. Manually moveselector leverfrom"R"and"0"to"N" and
note shift quality.
2. Release parkingbrakewithselector leverin"N" position.
Lightly depress accelerator pedaltomake surevehicle
does notmove. (When vehicle isnew orsoon afterclutches
have been replaced, vehiclemaymove slightly. Thisisnot
a problem.)

AT-17

OKNGBRAKE
BOOSTER
On-vehicle Service
OPERATING CHECK

• Depress brakepedalseveral timeswithengine off.After
exhausting vacuum,makesurethere isno change inpedal
stroke.
• Depress brakepedal, thenstart engine. Ifpedal goesdown
slightly, operation isnormal.

AIRTIGHT CHECK

• Start engine, andstop itafter oneortwo minutes. Depress

SBR002A
brakepedalseveral timesslowly. Booster isairtight ifpedal
stroke isless each time.
• Depress brakepedalwhileengine isrunning, andstop
engine withpedal depressed. Thepedal stroke should not
change afterholding pedaldownfor
30seconds.
SBR365AA Removal
CAUTION:
• Becareful nottosplash brakefluidonpainted areas;itmay
cause paintdamage. Ifbrake fluidissplashed onpainted
areas, washitaway withwater immediately.
• Be careful nottodeform orbend brake pipes, during
removal ofbooster.

SEC.
465.470

BR-15Gasket

~ :N.m (kg-m. ft-Ib)

SBR223BB
•

ANTI-LOCKBRAKESYSTEM
Wiring Diagram -ABS -

BR-ABS-01

•

ABS
CONTROL
UNIT

(B111)

LHDmodels

@:
RHOmodels
Refer
to
EL-POWER.
FUSE
BLOCK
(JIB)

~

GY

ffi
IGN
SW
Y

I~I COMBINATION
METER
(ABS WARNING
LAMP)

~@
LIB
@

I

GY
LIB

$-------$
GY (~) LIB

I-

e-
LIB~ ToBR-ABS-O?

I

LIB

13-0
I

FAIL
LAMP
IGNITION
SWITCH
ON orSTART
STOP
DEPRESED LAMP
SWITCH
RELEASED ~

~
P!L

•

~:I
P!L

rn~
I
JUNCTION

BOX
NO.2

(JOINT

CONNECTORS)

1!:i=!J~
PIL

~~
•

PIL

lelIl

9F'~
P!L

14-81

STOP
LAMP
SW

Fa~
l..1..@
B ~~(B115)
5 6
TI1910
1112 W
Refer
tolast page
(Foldout page).

~---------------------------------,

L ~

HBR002
BR-45

TROUBLEDIAGNOSES
Contents
How toPerform TroubleDiagnoses forQuick andAccurate Repair SR-52
Self-diagnosis SR-53
CONSULT BR-58
CONSULT Inspection Procedure BR-59
Component PartsandHarness Connector Location BR-64
Preliminary Check BR-65
Ground CircuitCheck BR-66
Circuit Diagram forQuick Pinpoint Check BR-67
Diagnostic Procedure1Warning lampdoes notcome on BR-68
Diagnostic Procedure2Warning lampstays on BR-69
Diagnostic Procedure3ABS actuator solenoid valve BR-72
Diagnostic Procedure 4Wheel sensor orrotor BR-74
Diagnostic Procedure5Motor relayormotor BR-76
Diagnostic Procedure6Solenoid valverelay BR-79
Diagnostic Procedure7Power supply BR-81
Diagnostic Procedure 8Control unit BR-82
Diagnostic Procedure9Pedal vibration andnoise BR-82
Diagnostic Procedure10Long stopping distance BR-83
Diagnostic Procedure11Unexpected pedalaction BR-83
Diagnostic Procedure12ABS does notwork BR-84
Diagnostic Procedure13ABS works frequently BR-84
Electrical Component Inspection BR-85
How toPerform TroubleDiagnoses forQuick
and Accurate Repair
INTRODUCTION

The ABS system hasanelectronic controlunittocontrol major
functions. Thecontrol unitaccepts inputsignals fromsensors
and instantly drivestheactuators. Itis essential thatboth kinds
of signals areproper andstable. Itis also important tocheck
for conventional problems:suchasair leaks inbooster lines,
lack ofbrake fluid,orother problems withthebrake system.

SEF233G
Itis much moredifficult todiagnose aproblem thatoccurs
intermittently ratherthancontinuously. Mostintermittent prob-
lems arecaused bypoor electric connections orfaulty wiring.
In this case, careful checking ofsuspicious circuitsmayhelp
prevent thereplacement ofgood parts.
A visual checkonlymaynotfind thecause ofthe problems, so
a road testshould beperformed.
Before undertaking actualchecks, takejustafew minutes to
talk with acustomer whoapproaches withaABS complaint. The
customer isavery good source ofinformation onsuch prob-
lems; especially intermittent ones.Through thetalks withthe
customer, findoutwhat symptoms arepresent andunder what

SEF234G
conditions theyoccur.
Start yourdiagnosis bylooking for"conventional" problems
first. Thisisone ofthe best ways totroubleshoot brakeprob-
lems onanABS controlled vehicle.

BR-52

.=J
MPH

-~s::~

~~

___ --- warnin:1
TROUBLE
DIAGNOSES
Self-diagnosis (ForEurope)
FUNCTION

• When aproblem occursinthe ABS, thewarning lamponthe
instrument panelcomes on.
• Amaximum ofthree malfunctions arestored inthe memory
of the ABS control unit.

Erase theself-diagnosis resultsstoredinthe control unitafter
malfunctions arerepaired (Seenextpage).

• The self-diagnosis resultsareidentified byCONSULT or
warning lamp.

SELF-DIAGNOSIS PROCEDURE

Start engine.
Dr.ive vehicle over15km/h (9MPH) foratleast oneminute .
Stop vehicle withengine running.

Make surethaitheASS warning lampactivates.

SBR875CA
Verifythelocation ofthe malfunction withthemalfunction codechart.
Then make necessary repairsfollowing thediagnostic procedures.
After themalfunctions arerepaired, erasetheself-diagnostic results
stored inthe control unit.

Disconnect connectors forASS control unitorthe battery negative termi-
nal foratleast oneminute.

Check warning lampfordeactivation afterdriving vehicle over15km/h (9
MPH) foratleast oneminute.
Test theASS inasafe area toverify thatitfunctions properly.

BR-53
•

TROUBLEDIAGNOSES

Ii)
NISSAN

CONSULT
EE940.

I
~

I

START

I
SUB
MODE
,

SEF253Q

@]
~
SELECT
SYSTEM

0

ENGINE
AfT
AIRBAG ABS
IVMS
SBR104D

@]
I~
SELECT DIAGMODE

01

I
SELF-DIAG
RESULTS
,

I
DATA
MONITOR

I

I
ACTIVE
TEST

I
ECU
PART NUMBER

I

I
SST412B

II
•SELF-DiAG RESULTS.
0

FAILURE DETECTED
TIME
FR RH SENSOR

0

[OPEN)

ERASE
II
PRINT
SBR950C CONSULT
Inspection Procedure
SELF-DIAGNOSIS PROCEDURE

m
1) Turn ignition switchOFF.
2) Connect CONSULT toData LinkCon-
nector forCONSULT.
1) Start engine.
2) Drive vehicle over30km/h (20MPH)
for atleast oneminute.

.
r

(;)
1)Stop vehicle withengine running
and touch "START" onCON-
SUL Tscreen.
• Program
card
AE950: ForAustralia
EE940: ExceptAustralia

(!]
2)Touch "ASS".

lP]
3)Touch "SELF-DIAG RESULTS".
• The screen showsthedetected mal-
function andthetimes ofignition
switch ONand OFF after itoccurred.
Make thenecessary repairsfollowing
the diagnostic procedures.

II
After themalfunctions arerepaired,
erase theself-diagnostic resultsstored
in the control unitbytouching
"ERASE".
Check warning lampfordeactivation
after driving vehicle over30km/h (20
MPH) foratleast oneminute.
Test theASS inasafe area toverify
that itfunctions properly.
Note: "SELF.DlAG RESULTS"screenshowsthedetected malfunction and
the times ofignition switchONand OFF after
it
occurred.

BR-59
•

DATAMONITOR MODE TROUBLE
DIAGNOSES
CONSULT Inspection Procedure(Cont'd)
MONITOR ITEM CONDITION
SPECIFICATION
FR RH SENSOR
FR LHSENSOR Drive
vehicle.
Almostthesame speed asspeedometer.
REAR RHSENSOR (Each
wheel isrotating.)
REAR LHSENSOR
STOP LAMP SW Brake
isdepressed. Depress
thepedal: ON
Release thepedal: OFF
FR RH INSOL
FR RH OUT SOL
FR LH INSOL
FR LH OUT SOL
Engineisrunning. Operating
conditions foreach solenoid valveareindicated.
RR RH INSOL ABS
isnot operating: OFF
RR RH OUT SOL
.

RR LHINSOL
RR LHOUT SOL
IgnitionswitchON(Engine stops):OFF
ACTUATOR RLY
Enginerunning: ON
MOTOR RELAY ABS
isnot operating: OFF
Ignition switchisON or
ABSisoperating: ON
engine isrunning.
WARNING LAMP Warning
lampisturned on:ON
Warning lampisturned off:OFF
BATTERY VOLT Power
supply voltage forcontrol unit
ACTIVE TESTMODE
TEST ITEM CONDITION JUDGEMENT
Brake fluidpressure controloperation
FR RH SOLENOID
INSOL OUTSOL
FR LH SOLENOID
RR RH SOLENOID UP
(Increase): OFF OFF
RR LHSOLENOID
Engineisrunning. KEEP
(Hold): ON OFF
DOWN (Decrease): ON ON
ABS actuator motor
ABS MOTOR ON:
Motor runs
OFF: Motor stops
Note: Active testwillautomatically stoptenseconds afterthe
test starts. (LIMIT SIGNAL monitorshowsON.)
BR-63
•

TROUBLEDIAGNOSES
Diagnostic Procedure8
CONTROL UNIT
(Malfunction codeNo.71)

Carry outself-diagnosis aftererasing
self-diagnostic results,BR-56.
Does warning lampindicate codeNo.
71 again?

No

Inspect thesystem according tothe
code No. Yes
Replace controlunit.

Brake pedal Diagnostic
Procedure9
SYMPTOM: Pedalvibration andnoise
No

Does thesymptom appearwhenelectri-

SAT797A
calequipment switches(suchashead-
lamp) areoperated?
1.
Apply brake.
2. Start engine.
3. Does thesymptom appearonlywhen
engine isstarted?

No

Yes
Check wheelsensor shieldgrou.nd
secured withcontrol unitmounting bolt.
Refer toBR-41. Yes
Carryoutself-diagnosis.
Refer toBR-53 (Europe)
or BR-56 (Except
Europe).
Go to
Ii1
inDiagnostic
Procedure 11,BR-83.

OK

Check control unitpinterminals for
damage orthe connection ofcontrol
unit harness connector.
Reconnect controlunitharness connec-
tor. Then retest.

Note: ABSmayoperate andcause vibration underanyofthe
following conditions.
• Applying brakegradually whenshifting oroperating clutch.
• Low friction (slippery) road.
• High speed cornering.
• Driving overbumps andpotholes.
• Engine speedisover 5,000 rpmwith vehicle stopped.
BR-82