Abs NISSAN ALMERA N15 1995 Owner's Manual

ANTI-LOCKBRAKESYSTEM
Wiring Diagram -ABS -(Cont'd)

BR-ABS-04

ASS
CONTROL
SENSOR UNIT
FR-LH
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R
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1
1
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1

CONNECTOR
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-7
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1
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(B109)
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R L R
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M
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M
WHEEL
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SENSOR SENSOR

-
rvFRONTLH
rvFRONTLH

(eUO)
(8106)
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56 iBl91 ...IE.

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(tig)
SR SR
BR-48 ~(B109)

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(Foldout page).

HBR005

ANTI-LOCKBRAKESYSTEM
Wiring Diagram -ABS -(Conl'd)

BR-ABS-05

-----
-----
A8S

CONTROL

UNIT


SENSOR
RR-LH

H

~ L
t

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I
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SENSOR
RR-LH
(+)

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JOINT

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CONNECTOR-7

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r

(8110)

SENSOR
RR-RH

H

1
3•8
1
LG
t

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....

SENSOR
RR-RH
(+)

~ PU
J

----
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1
1
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M
WHEELSPEED

SENSOR
rv REARRH

(!W)
P
L

M
WHEELSPEED

SENSOR

rv
REARLH

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GYSR ~(8109)
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tolast page
(Foldout page).

HBR006
BR-49

ANTI-LOCKBRAKESYSTEM
Wiring Diagram -ABS -(Coni' d)

BR-ABS-06

ABS
CONTROL
UNIT
FL- FL-FR-
FR- RL-
RL-RR-
RR-

~

OUT INOUT
INOUT
INOUT IN

1
3';'
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1
2•6
1
1
5•4
1
1
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1
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1
1
3•4
1

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BRBR/W
LGLG/R
PUPU/W

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18 --- 20
19 --- 21

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FL -OUT FL-IN FR-OUT FR-IN RL-OUT RL-IN RR-OUT RR-IN

M
MOTOR ABS
ACTUATOR

(fJ103)

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BR-50
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tolast page
(Foldout page).

HBRDD?

ANTI-LOCKBRAKESYSTEM
Wiring Diagram -ABS -(ConI' d)

SR-ASS-07

I
BAT.ERY
I

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EL-POWER. SOLENOID
VALVE
RELAY
CONTROL
(-)

1
3:
I

LG/R MOTOR
RELAY
MONITOR

~
L
MOTOR
RELAY
CONTROL
(+)
~
Y
MOTOR
RELAY
CONTROL
(-)

4=U
G/R
ABS
CONTROL
UNIT

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RELAY

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

BR-51
HBRDDa

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

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~~

___ --- 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
Self-diagnosis (ForEurope) (Cont'd)
MALFUNCTION CODE/SYMPTOM CHART

Code No.
Malfunctioningpart Diagnostic
procedure
(No. ofwarning lampflashes)

45
Actuator
frontleftoutlet solenoid valve

3
46
Actuator
frontleftinlet solenoid valve
3
41
Actuator
frontrightoutlet solenoid valve
3
42
Actuator
frontrightinletsolenoid valve

3
51
Actuator
rearright outlet solenoid valve
3
52
Actuatorrearright inletsolenoid valve
3
55
Actuator
rearleftoutlet solenoid valve
3

56
Actuator
rearleftinlet solenoid valve
3
25
Frontleftsensor (open-circuit)
4
26
Front
leftsensor (short-circuit)
4
21
Frontrightsensor (open-circuit)
4
22
Front
rightsensor (short-circuit)

4
35
Rearleftsensor (open-circuit)
4
36
Rear
leftsensor (short-circuit)

4
31
Rearrightsensor (open-circuit)

4
32
Rearrightsensor (short-circuit)

4
18
Sensorrotor

4
61
Actuatormotorormotor relay

5
63
Solenoidvalverelay

6

57
Powersupply (Lowvoltage)

7
71
Controlunit

8

Control unitpower supply circuit
Warning lampstays onwhen igni-Warning
lampbulbcircuit
tion switch isturned on Control
unitorcontrol unitconnector

2

Solenoid valverelaystuck
Power supply forsolenoid valverelaycoil
Warning lampstays on,during
Controlunit

-

self-diagnosis
Warning lampdoesnotcome onFuse, warning lampbulborwarning lampcircuit

1

when ignition switchisturned onControl unit
Warning lampdoes notcome on
Control unit
during self-diagnosis
-

Pedal vibration andnoise

-
9

Long stopping distance

-
10

Unexpected pedalaction

-
11

ABS does notwork

-

12

ABS works frequently

-
13

BR-55
•