1995 NISSAN ALMERA N15 Service Manual

Note
Note Clean sensor fixing
portion, orreplace sen-
sor.

NG
OK
OK

Check clearance betweensensorand
rotor.

Clearance: Front0.1 -1.1
mm

(0.004 .0.043 in)
Rear 0.1 -1.1 mm
(0.004 -0.043 in)
WHEEL
SENSOR MECHANICAL CHECK
NGAdjust tirepressure or
replace tire(s).
Check forinflation pressure, wearand
size ofeach tire.
Note
Note Check wheelbearing axialendplay.

m
"Note

TROUBLE
DIAGNOSES
Diagnostic Procedure4(Conl'd)

@

SBR069C

\
\ Rotor

\\ Sensor
)6
Feeler gauge

)I

OK

Note Check sensor rotorforteeth damage.
NG
Note
Replace sensorrotor.

OK

Check control unitpinterminals for
damage orthe connection ofcontrol
unit harness connector.
Reconnect controlunitharness connec-
tor. Then retest.
Note:
Wheel position should •••
be distinguished by
code
No.except code

No. 18(sensor rotor).
BR-75

m
ASS relay box2-pin
[it
DISCONNECT

connector
@
IJIJ
~c:\

(body side)
";V

rn
TROUBLE
DIAGNOSES
Diagnostic Procedure5
MOTOR RELAYORMOTOR
(Malfunction codeNo.61)
MOTOR POWERSUPPLY CIRCUIT

Check fusible link
@]
for ABS relay box.
For fusible linklayout, refertoPOWER
SUPPLY ROUTING inEL section.
NG
@
(Skip page.)

~iv

c(
C/UNIT CONNECTOR
P

7 19. 2

,
SBR953CC
~iV
ASS relay box
6-pin connectors

(body side)
@29

~
SBR248D OK

1. Disconnect connectors fromcontrol
unit and ABS actuator. Checktermi-
nals fordamage orloose connection.
Then reconnect connectors.
2. Carry outself-diagnosis again.

Does warning lampactivate again?

Yes
1. Disconnect ABSrelay box2-pin con-
nector@.
2. Check voltage between connector
(body side)terminal
@
and ground.

Battery voltage shouldexist.
CIRCUIT CHECK

1. Disconnect ABSrelay box6-pin con-
nector andcontrol unitconnector.
2. Check continuity betweencontrolunit
connector terminalsandABS relay
box 6-pin connector ~(body side)
terminals.
No
NG
NG
Inspection
end
Repair harness and
COI

nectors.
Repair harness andcor
nectors.
Control unit

Continuity shouldexist.
ASS
relay box
@
@

cID

OK
MOTOR RELAYCHECK

Refer toMOTOR RELAYinElectrical
Components Inspection,BR-8S.

OK
ACTUATOR MOTORGROUND CHECK

Refer toACTUATOR MOTORGROUND
in Ground CircuitCheck, BR-66.

OK

@

(Go tonext page.)

BR-76 NG
NG
Replace
motorrelay.
Repair harness andter-
minals.

TROUBLEDIAGNOSES
Diagnostic Procedure5(Cont'd)
@
[:tI
°15
T

ASS relay boxconnectors
~(ASS relayboxside)
2~~

9 11~~

~ MOTOR
RELAYCIRCUIT
1. Remove motorrelay.
2. Check continuity betweenASSrelay
box connectors (ASSrelayboxside)
and ASS relay boxterminals. NG
Replace ASSrelay box.
OK
Continuity
shouldexist.
ASS
'relay bOf

[ill

[ill
EJ

WJ
~
86

85

87
ASS
relay box
connector

@
@
@

Connector@
@

Connector@
@
ASS
relay box
terminal

@
@
@
@

SBR061D Ii]
Check continuity betweenASSrelay
box 2-pin connector
@
(ASS actuator
side) terminal @and actuator motor
positive terminal.
Continuity shouldexist.

•

Repair
harness andcon-
nectors.
Replace ASSactuator.
NG
NG
OK
1.
Disconnect actuatormotorterminals.
2. Apply battery voltage tomotor termi-
nals.
Motor should operate.
Do not connect wireformore than5
seconds.
Go toDiagnostic Procedure7,SR-81.

131

MOTOR CHECK
ASS
relay box2-pin
connector
@iY

(ASS actuator side)

do

SBR249DBR-77

TROUBLEDIAGNOSES
Diagnostic Procedure5(Conl'd)

CID

Ii
ASS relay box2-pin ~
DISCONNECT

connector
@
=
1c0,

(body side)
V

cD
SBR957CC

@)
ASS relay box6-pin
connector (body side)
SBR958CB

III
@
@El ~
DISCONNECT

rrt\
ASSrelay box
~c;"1

\J.tV
connectors
-';;V

0U
9
(ASSrelayboxside) Replace
fusiblelink.
Does thefusible linkblowout when
ignition switchisturned
"ON"?

Ii
MOTOR POWERSUPPLVCIRCUIT
1. Disconnect batterycableandASS
relay box2-pin connector
@.

2. Check continuity betweenASSrelay
box 2-pin connector
@
(body side)
terminal @and ground.
Continuity shouldnotexist.
1. Disconnect ASSrelay box6-pin con-
nector andcontrol unitconnector.
2. Check continUity betweenASSrelay
box 6-pin connector @E)(body side)
terminal
@
and ground.
Continuity shouldnotexist.
OK
Check continuity betweenASSrelay
box 6-pin connector (ABSrelaybox
side) terminal @and ground, 2-pin
connector
@
(ASS relay boxside)
terminal @and ground.
Continuity shouldnotexist. No
NG

NG
NG
Inspection
end
Repair harness andcon-
nector.
Repair harness andcon-
nector.
Replace ASSrelay box.
J

o
ASSrelay box2-pin
connector (ASS actuator side)

~@

L1J.1J
SBR065DB
Remove motor
ground. OK

o
1. Remove motorground.
2. Check continuity betweenASSrelay
box 2-pin connector
@)
(ASS actua-
tor side) terminal
@)
and ground.
Continuity shouldnotexist. NG
Replace ASSactuator.
OK
MOTOR CHECK
SBR250D Goto
n!II
inDiagnostic Procedure5
(preceding page).
OK
Check control unitpinterminals for
damage orthe connection ofcontrol
unit harness connector.
Reconnect controlunitharness connec-
tor. Then retest.
BR-78

Fa
ASS relay box2-pin
DISCONNECT

connector
@~~~

(body side)
I..lI&I
~V

ctD
TROUBLE
DIAGNOSES
Diagnostic Procedure6
SOLENOID VALVERELAY
(Malfunction codeNo.63)
SOLENOID VALVEPOWER SUPPLY
CHECK

Check fusible link
@].
Forfusible link
layout, refertoPOWER SUPPLY ROUT-
ING inEL section.
NG

@
(See nextpage.)

~Io

( C/UNIT CONNECTOR
P

2 .30 .37

.
SBR961CC

ASS relay box
6-pin connector
(body side)
@W

Efe
OK

1. Disconnect connectors fromcontrol
unit andASS actuator. Checktermi-
nals fordamage orloose connection.
.Then reconnect connectors.
2. Carry outself-diagnosis again.

Does warning lampactivate again?

Yes
No

Inspection end

GROUND CIRCUITCHECK

Refer toCONTROL UNITGROUND and

SBR251D
ACTUATOR GROUNDinGround Circuit
Check, SR-66.

OK
SOLENOID VALVEPOWER SUPPLY
CHECK

1. Disconnect connectors fromASS
relay box.
2. Check voltage between ASSrelay box
2-pin connector
@
(body side)ter-
minal
@
and ground.

Battery voltage shouldexist.
CIRCUIT CHECK

1. Disconnect controlunitconnector.
2. Check continuity betweencontrolunit
connector terminalsandASS relay
box connector
@ill
(body side)termi-
nals. Repair
harness andcon-
nectors.
Repair harness andcon-
nector.
Repair harness andcon-
nectors.
•

Control unit

3T
ABS
relay box

Xi

@ @

Continuity shouldexist.
OK
SOLENOID VALVERELAY CHECK

Refer toSOLENOID VALVERELAY in
Electrical Components Inspection,

SR-85.
OK

@

(Go tonext page.)

BR-79
Replace
solenoid valve
relay.

~i5
TROUBLE
DIAGNOSES
Diagnostic Procedure6
(Co nt'd)

(!)

1

~ ASSrelaybox

LI!ID
c:!D~
connectors

,2.4.~.8.18,
(ASSrelayboxside)
SOLENOID
VALVERELAY CIRCUIT
CHECK
NG

•Replace ASSrelay box.
Check continuity betweenASSrelay ter-
minals andASS relay boxconnector
(ASS relayboxside) terminals.
~SS relaybox

~
:~
}

[]QJ ~~
85

00
87a
30
ABS
relay boxterminal

87a
85

@

Continuity shouldexist.
OK

I
Go todiagnostic procedure3,SR-72.

SBR068D
I;]
~i5
Replace
fusiblelink. No
Inspection end

Does thefusible linkblowout when

GD
ASSrelay box2-pin connector
@
Ignition switchisturned
"ON"?

(body side)
Yes

I;]

[Q]
RELAYUNIT POWER SUPPLY CIRCUIT
NG
Repair harness andcon-
nector.
1. Disconnect ASSrelay box2-pin con-

-=-
nector@.

SBR964CC
2.
Check continuity betweenASSrelay
box 2-pin connector @(body side)

~i5
terminal

@
and ground.

Continuity shouldnotexist.

c1!D
ASS
relay box
OK

2-pin connector

Ii

(ASS relayboxside)

@ED
1.Disconnect ASSrelay boxconnectors NG
Replace ASSrelay box.
and control unitconnector.
2. Check continuity betwee"llASSrelay
box 2-pin connector
@
(ASS relay
box side) terminal
@
and ground.

-=-
Continuity
shouldnotexist.
SBR069D OK

Ii
~io
Ii

Check continuity betweenASSrelay NG
Replace ASSactuator.

@[)
ABS
relay box
box2-pin connector
@
(ASS actuator
2-pin connector
side)terminal
@
and ground.
(ABS actuator side)

Continuityshouldnotexist.

@

OK

Go toDiagnostic Procedure3,SR-72.

':"
SBR252D
BR-80

c(
C/UNIT CONNECTOR
1
p~

18
TROUBLE
DIAGNOSES
Diagnostic Procedure7
POWER SUPPLY (Lowvoltage)
(Malfunction codeNo.57)
1. Disconnect controlunitconnectors.
Check terminals fordamage orloose
connections. Thenreconnect connec-
tors.
2. Carry outself-diagnosis again.
Does warning lampactivate again? No
Inspection end
SBR253D CONTROL UNITPOWER SUPPLY
CHECK
1. Disconnect controlunitconnector.
2. Check voltage between controlunit
connector terminalG)and ground.
Battery voltage shouldexistwhen
ignition switchisturned ON.
OK NG

---.-.@
(Seebelow.)
CONTROL UNITGROUND CHECK
Refer toCONTROL UNITGROUND in
Ground CircuitCheck, BR-66.
OK
Check control unitpinterminals for
damage orthe connection ofcontrol
unit harness connector.
Reconnect controlunitharness connec-
tor. Then retest.
@
Check 7.5Afuse
rj2J.
Refer toPOWER
SUPPLY ROUTING inEL section.
OK
Check continuity betweenbatteryand
control unitconnector terminal
CD.

OK
Check battery. RefertoBATTERY inEL
section.
BR-81 NG
NG
NG Repair
harness andcon-
nectors.
Replace fuse.

Repa;, hame" aodcoo-
I

nectors.
•

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