1995 NISSAN ALMERA N15 Service Manual

TROUBLEDIAGNOSES
Circuit Diagram forQuick Pinpoint Check
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BR-67

TROUBLEDIAGNOSES
Diagnostic Procedure1(Not self-diagnostic item)
Warning lampdoes notcome onwhen ignition switchisturned

on.

c(

C/UNIT CONNECTOR

30
p~

15

SBR238D WARNING
LIGHTCIRCUIT CHECK

Check 10Afuse ~forwarning lamp.
For fuse layout, refertoSR-4S.

OK

Check warning lampbulb.
NG

NG
Replace
fuse.
Replace bulb.

Ii) ASSrelay box6-pin
connector (bodyside)

~ 108
c(
C/UNIT CONNECTOR
P

I...a1
30~

15
l.41

Iv
OK

1. Install 10Afuse andbulb.
2. Disconnect connectors fromcontrol
unit and ASS relay box.
3. Check voltage between controlunit
connector terminal
@
and ground
after turning ignition switch"ON".

Battery voltage shouldexistafter
turning ignition switch
"ON".

OK
NG

Repair harness andcon-
nectors.

OK
Continuity
shouldexist.

•
Check continuity betweenASSrelay
box 6-pin connector (bodyside)and
control unitterminals.

\ ASS relay box

f~~~_
SBR239D

~i5

@ID
ASS relay box6-pin
connector (ASS relayboxside)

108
ASS
relay box

@)

Control
unit

@
Ground
NG

Repair harness andcon-
nectors.
1. Remove solenoid valverelay.
2. Check continuity betweenASSrelay

SBR945CB
box6-pin connector (ASSrelaybox
side) andASS relay boxterminals.

ASS relay box ASS
relay box
connector terminals

@)\B
@e

@

Continuity shouldexist.
Note: Payattention totester polarity",
OK
SOLENOID VALVERELAYCHECK

Refer toSOLENOID VALVERELAY in
Electrical Components Inspection,
BR-8S.

OK

Go toDiagnostic Procedure7,BR-81.
NG
NG
Replace
ABSrelay box.
Replace solenoid valve
relay.

": Specifications mayvary depending onthe type oftester.
Before performing thisinspection, refertothe instrucllon manualofthe
tester.
BR-68

TROUBLEDIAGNOSES
SBR969CB
ABS
relay box
~

o
DO

!MJ
•

Diagnostic
Procedure2(Not Self-diagnostic
item)
Warning lampstays onwhen ignition switchisturned on.
CONTROL UNITPOWER SUPPLY NG
CIRCUIT ----"""'(Go
to
(!)
onBR-71.)
Check 7.5Afuse
[ll]
forcontrol unit.
For fuse layout, refertoBR-45.

m
OK
1. Disconnect connectorfromcontrol NG
Repair harness andcon-
unit.
----.......

nector.
2. Check voltage between controlunit
connector terminal
(i)
and ground
alter turning ignition switch"ON".
Battery voltage shouldexist.

[;]
~OK
SOLENOID VALVERELAYCOILPOWER NG
Repair harness andcon-
SUPPL YCIRCUIT
----+

nector.
1. Turn ignition switch"OFF". Discon-
nect ABS relay box6-pin connector.
2. Check continuity betweencontrolunit
connector terminalsandABS relay
box 6-pin connector (bodyside)ter-
minals.
Control unit ABS
relay box

@ @
@
CID

Continuity shouldexist.

[!]
~OK
CIRCUIT CHECK
~Replace
ABSrelay box.
1. Disconnect solenoidvalverelay.
2. Check continuity betweenABSrelay
box 6-pin connector (ABSrelay box
side) terminals andsolenoid valve
relay boxterminals.
ABS relay box ASSrelay box
connector terminals

@ @

CID
@

Continuity shouldexist.
OK
SOLENOID VALVERELAYCHECK NG
Replace solenoid valve
~
relay.
Refer toSOLENOID VALVERELAY in
Electrical Components Inspection,
BR-85.
.OK
SBR240D
SBR241D
ASS
relay box
6-pin connector
(body side)

E$B

~i5

~ @)
ABSrelay box6-pin
~ connector
(ABS relayboxside)

(
C/UNIT
CONNECTOR

1

~i5

( C/UNIT CONNECTOR
P

2 .37

'--v--'

@

(Go tonext page.)
BR-69

c(
C/UNIT CONNECTOR

30
p~
15
TROUBLE
DIAGNOSES
Diagnostic Procedure2(Not Self-diagnostic
item) (Cont'd)
SBR242D

EIT8
~i5

@QD
ABS
relay box6-pin
connector

(ABS
relayboxside)

SBR971CB

@
ABS
actuator a-pin
connector

(ABS
actuator side)

SBR972CB GROUND-SHORT
CHECKFORWARN-
ING LAMP CIRCUIT.

1. Turn ignition switch"OFF".
2. Disconnect connectors fromcontrol
unit and ABS relay box6-pin connec-
tor.
3. Check continuity betweencontrolunit
connector terminal
@J
and body
ground.

Continuity shouldnotexist.
OK

1. Disconnect actuatorgroundterminal
and 6-pin connector.
2. Check continuity betweenASSrelay
box 6-pin connector (ABSrelaybox
side) terminal
@
and body ground.

Continuity shouldnotexist.
Note: Payattention totester polarity •.
OK

Ii
SOLENOID VALVECIRCUIT

1. Disconnect ABSactuator 8-pincon-
nector.
2. Check continuity betweeneachABS
actuator 8-pinconnector (ABSactua-
tor side) terminals andbody ground.

Continuity shouldnotexist.
OK

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

NG NG
Repair
harness andcon-
nector.
Replace ABSrelay box.
Replace ABSactuator.

•. Specifications mayvary depending onthe type oftester.
Before performing thisinspection, refertothe instruction manualofthe
tester.
BR-70

SBR243D
SBR244D

•

1

Replace 7.5Afuse.
~Inspection end
Does thefuse blowout whenignition
switch isturned "ON"?
Yes

[!1 CONTROL UNITPOWER SUPPLY
NG
Repair harness andcon-

---...

CIRCUIT
nector.
1. Disconnect controlunitconnector.
2. Check continuity betweencontrolunit
connector terminal
(D
and body
ground.

Continuity shouldnotexist.

OK

III
Check continuity betweencontrolunit NG
Repair harness andcon-

--+

connector terminal
@
and body nector.
ground.

Continuity shouldnotexist.

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

TROUBLE
DIAGNOSES
Diagnostic Procedure2(Not Self-diagnostic
item) (Cont'd)

p~

15

p~
15

c(

C/UNIT CONNECTOR

1

c(
C/UNIT CONNECTOR
2
BR-71

TROUBLEDIAGNOSES

c(
C/UNIT CONNECTOR

5 .6 25. 26

,33 .34 5354,

(;) ASSactuator
a-pin connector
(ASS actuator side)
P

ASS relay box
2-pin connector
(ASS actuator side)

rO-...@

U!l.LJ
SBR245D

~i8

ASS relay box
2-pin connector
(ASS actuator side)

rO-...@

U!l.LJ
SBR246D Diagnostic
Procedure3
ABS ACTUATOR SOLENOIDVALVE
(Malfunction codeNo.41,45,51, 55,42, 46,52,56)
1. Disconnect connectorsfromcontrol
~Inspection end
unit, ASS actuator andASS relay
box. Check terminals fordamage or
loose connections. Thenreconnect
connectors.
2. Carry outself-diagnosis again.
Does warning lampactivate again?
Yes

m
ABS ACTUATOR SOLENOIDVALVE OK
CHECK
f---+@

(Gotonext page.)
1. Disconnect connectors fromcontrol
unit and ABS relay box.
2. Check resistance betweencontrol
unit connector terminalsandASS
relay box2-pin connector
@
(ABS
actuator side)terminal.
Code No. Control
ASSrelay Resis-
unit boxtance
41
@

@
45
@
@
4.4-6.0n
51
@
@
55
@

@
42
@
@
46
CID
@

85-

52 @ @110n
56
@
@

(;)
NG
1. Disconnect ASSactuator 8-pincon- OK
Repair harness andcon-
nector. ~
nectorbetween control
2. Check
resistance betweenABSactu- unitconnector terminal
ator 8-pin connector (ABSactuator and
ASS actuator 8-pin
side) terminals andASS relay box connector
terminal.
2-pin connector
@)
(ABS actuator
side) terminal.
.

Code No. ASS
ASS
relay Resis-
actuator box
tance
41
@
@
45
@
@)

4.4-6.0n
51
@
@

I

55
@
@
42
@)
@
46
CD
@

85-

52 (J)
@11.0n
56
CID
@
NG
Replace ABSactuator.
BR-72

TROUBLEDIAGNOSES
Diagnostic Procedure3(Conl'd)

@

ASS relay box
connectors
(ASS relayboxside)

EffB~

SBR058D1.
Disconnect ASSrelay boxconnec-
tors.
2. Check continuity betweenASSrelay
box 2-pin connector
@D
(ASS relay
box side) terminal @and 6-pin con-
nector
(ASS relayboxside) ter-
minal
@.

Continuity shouldexist. OK
GotoDiagnostic Proce-
dure?, SR-81.
NG

I-
ASS relay box
~~D~ ASS
relay box
2-pin connector
(ASS relayboxside)
Uw@
SBR059D 1.
Remove solenoid valverelay.
2. Check continuity betweenASSrelay
box 2-pin connector
@D
(ASS relay
side) terminal
@
and ASS relay box
terminal
@.

Continuity shouldexist.
OK
Go toDiagnostic Procedure6,BR-79.
BR-73
NG

Replace ASSrelay box.

•

TROUBLEDIAGNOSES

~i5

E(
C/UNITCONNECTOR
P

,14.9.11 .12, ,15.10.38.13,

SBR247DDiagnostic
Procedure4
WHEEL SENSOR ORROTOR
(Malfunction codeNo.21,22,25,26,31, 32,35, 36or18)

1. Disconnect connectors fromcontrol
~Inspection end

I

unit and wheel sensor ofmalfunction
code No.Check terminals fordam-
age orloose connections. Then
reconnect connectors.
2. Carry outself-diagnosis again.

Does warning lampactivate again?

Yes

m
WHEEL SENSOR ELECTRICAL CHECK
OK

~@
(Seenextpage.)
1. Disconnect controlunitconnector.
2. Check resistance betweencontrol
unit connector terminals.
Code No.21or22 (Front RHwheel)
Terminals
@
and @
Code No.25or26 (Front LHwheel)
Terminals
@
and
@

Code No.31or32 (Rear RHwheel)
Terminals
@
and
@

Code No.35or36 (Rear LHwheel)
Terminals
@
and
@

Resistance: 0.8•1.2 kD

NG
Note Note

CHECK WHEELSENSOR.

~Replace wheelsensor.

I

Refer toWHEEL SENSOR inElectrical
Components Inspection,SR-85.
OK
Note
Note:
Wheel position should

Repair harness andconnectors
be
distinguished by

between controlunitconn'ector and
code
No.
exceplcode

wheel sensor connector.
No.
18(sensor rotor).
BR-74