ACURA RL KA9 1996 Service Repair Manual

Troubleshooting
DTC 53 : Moto r Stuc k O N (cont'd )
(From pag e 19-137 )
ABS CONTRO L UNI T 12 P CONNECTO R
Chec k fo r a shor t t o bod y groun d
i n th e PM R circuit :
1 . Remov e th e pum p moto r relay .
2 . Disconnec t th e AB S contro l
uni t 12 P connector .
3 . Chec k fo r continuit y betwee n
termina l No . 1 2 an d bod y
ground .Wire sid e o f femal e terminal s
I s ther e continuity ? Repai
r shor t t o bod y groun d
betwee n th e under-hoo d fuse /
rela y bo x an d th e AB S contro l
unit.
If th e proble m occur s again ,replace th e AB S contro l unit .
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DTC 54 : Fail-saf e Rela y
With th e ignitio n switc h O N
(II) , th e AB S indicato r doe s
not g o off .With th e SC S servic e connec -
to r connecte d (se e pag e
19-119 ), DT C 5 4 is indicated .
Check th e AB S (2 0 A ) fus e i n th eunder-hoo d fuse/rela y box , an d
reinstal l th e fus e if i t i s OK .
I s th e fus e OK ?
Replace th e fus e an d recheck .
NOTE : I f th e fus e i s blow n afte r th e fail -
saf e rela y i s on , chec k fo r a shor t t o
bod y groun d i n th e wir e betwee n th e
fail-saf e relay , pum p moto r rela y an d
modulato r unit .
Wire color s o f fail-saf e rela y connector :BRN/BLK, WHT/GRN , BLK , YEL/GR N
Is th e rela y OK ?
Replace th e fail-saf e relay .
Chec k fo r a n ope n in th e + B cir -
cuit :
Measur e th e voltag e betwee n th efail-saf e rela y connecto r termina lNo. 2 an d bod y ground .
FAIL-SAF E RELA Y CONNECTO R
Is ther e batter y voltage ? Repai
r ope n in th e wir e betwee n
th e under-hoo d fuse/rela y bo x
an d th e fail-saf e relay . Termina
l sid e o f femal e terminal s
Chec k fo r a n ope n in th e solenoi d
powe r sourc e circuit :
1 . Connec t th e fail-saf e rela y
connecto r termina l No . 1 to
No . 2 wit h a jumpe r wire .2. Disconnec t th e modulato r uni t
connector .
3 . Measur e th e voltag e betwee n
th e modulato r uni t connecto r
terminal No . 1 0 an d bod yground . MODULATO
R UNI T CONNECTO R
I s ther e batter y voltage ?
(T o pag e 19-140 ) Repai
r ope n in th e wir e betwee n
th e fail-saf e rela y an d th e modu -
lato r unit . Termina
l sid e o f femal e terminal s
JUMPE
R WIR E
Chec
k th e fail-saf e rela y (se e
sectio n 23).
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Troubleshooting
DTC 54 : Fail-saf e Rela y (cont'd )
(From pag e 19-139 )
Chec k fo r a shor t t o powe r i n th e
solenoi d powe r sourc e circuit :
1 . Remov e th e jumpe r wir e fro m
th e fail-safe relay connector .
2 . Measur e th e voltag e betwee n
th e modulato r uni t connecto r
terminal No . 1 0 an d bod yground .
I s ther e batter y voltage ?
Chec k fo r a shor t t o powe r i n th e
FS R circuit :1. Disconnec t th e AB S contro lunit 22 P connector .
2 . Tur n th e ignitio n switc h O N (II) .
3 . Measur e th e voltag e betwee n
th e termina l No . 2 1 an d bod y
ground .
I s ther e batter y voltage ?
Chec k fo r a shor t t o bod y groun d
i n th e FS R circuit :
Chec k fo r continuit y betwee n th e
AB S contro l uni t 22 P connecto rterminal No . 2 1 an d bod y ground .
I s ther e continuity ?
Chec k fo r a n ope n i n the FSR
GN D circuit :
Chec k fo r continuit y betwee n th e
fail-saf e rela y connecto r termina l
No . 3 an d bod y ground .
I s ther e continuity ?
Check fo r a n ope n in th e FS R cir -cuit :1. Connec t th e fail-saf e rela yconnecto r terminal s No . 3 an dNo. 4 wit h a jumpe r wire .
2 . Chec k fo r continuit y betwee n
th e AB S contro l uni t 22 P con -
necto r termina l No . 2 1 an d
bod y ground .
I s ther e continuity ?
I f th e proble m occur s again ,
replac e th e AB S contro l unit . Repai
r shor t t o powe r i n th e wir e
betwee n th e fail-saf e relay , mod -
ulator uni t an d th e under-hoo dfuse/relay box .
Termina l sid e o f femal e terminal s
ABS CONTRO L UNI T 22 P CONNECTO R
Repai r shor t t o powe r i n th e wir e
betwee n th e AB S contro l uni tand th e fail-saf e relay .Wire sid e o f femal e terminal s
Repair shor t t o bod y groun d in
th e wir e betwee n th e AB S con -
tro l uni t an d th e fail-saf e relay .
FAIL-SAF E RELA Y CONNECTO R
Repair ope n in th e wir e betwee n
th e fail-saf e rela y an d bod y
ground .
Termina l sid e o f femal e terminal s
AB S CONTRO L UNI T 22 P CONNECTO R
Repai r ope n i n th e wir e betwee n
th e AB S contro l uni t an d th e fail -
saf e relay .
Wire sid e o f femal e terminal s
MODULATO
R UNI T CONNECTO R
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DTC 61 , 62 : Ignitio n Voltag e
With th e ignitio n switc h O N(II) , th e AB S indicato r come son.Wit h th e SC S servic e connec -
to r connecte d (se e pag e
19-119 ), DT C 61 , 6 2 ar e indicated .
Proble m verification :
1. Eras e th e DTC .2. Test-driv e th e vehicl e a t 6 mp h
(1 0 km/h ) o r more .
Doe s th e AB S indicato r com e on ?
Verif y th e DTC .
I s DT C 6 1 o r 6 2 indicated ? Th
e syste m is O K a t thi s time .
Perfor m th e appropriat e trou -
bleshootin g fo r th e code .
Chec k th e chargin g system .
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Troubleshooting
DTC 71 : Differen t Diamete r Tir e
Whil e drivin g th e vehicle , th e
AB S indicato r come s on .
Wit h th e SC S servic e connec -
to r connecte d (se e pag e
19-119 ), DT C 71 is indicated .
Replace th e tire(s ) wit h th e spec -
ifie d size .
DTC 81 : Centra l Processin g Uni t (CPU )
Does th e AB S indicato r com e
o n an d is DT C 8 1 indicated ? Replac
e th e AB S contro l unit .
Intermitten t failure ; th e vehicl e i s
O K at thi s time .
Proble m verification :1. Eras e th e DTC .2. Test-driv e th e vehicle .
Wit
h th e ignitio n switc h O N
(II) , th e AB S indicato r doe s
not g o off .With th e SC S servic e connec -
to r connecte d (se e pag e
19-119 ), DT C 8 1 is indicated .
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Modulator Unit

Removal/Installation

NOTE:

Do not spill brake fluid on the vehicle; it may damage the paint; if brake fluid does not contact the paint, wash it off

immediately with water.

Take care not to damage or deform the brake lines during removal and installation.

To prevent the brake fluid from flowing, plug and cover the hose ends and joints with a shop towel or equivalent mate-

rial.

Removal

1. Disconnect the modulator unit and pump motor connectors.

2. Disconnect the brake lines, then remove the proportioning control valve.

3. Remove the modulator unit.

Installation

1. Install the modulator unit.

2. Install the proportioning control valve, then connect the brake lines. Tighten the flare nuts to 15 N-m (1.5 kgf-m, 11 Ibf-ft).

3. Connect the modulator unit and pump motor connectors.

4. Bleed the brake system, starting with the front wheels.

5. Start the engine, and check that the ABS indicator goes off.

6. Test-drive the vehicle, and check that the ABS indicator does not come on.

From

From left-front

right-front
MODULATOR UNIT

RUBBER MOUNT

MODULATOR UNIT

CONNECTOR

8 mm BOLT

22 N-m (2.2 kgf-m, 16 Ibf-ft)

BRACKET
PROPORTIONING

CONTROL VALVE

6 mm BOLT

9.8 N-m (1.0 kgf-m, 7.2 Ibf-ft)

PUMP MOTOR CONNECTOR

6 mm NUT

9.8 N-m (1.0 kgf-m, 7.2 Ibf-ft)ProCarManuals.com

ABS Contro l Uni tPulsers/Whee l Sensor s
Removal/Installatio n
1. Remov e th e glov e box .
2 . Remov e th e glov e bo x bac k cover .
3 . Remov e th e righ t fron t doo r trim .
4. Remov e th e righ t kic k panel .
5. Tur n u p th e floo r mat .
6 . Remov e th e PC M cover .
7. Remov e th e connector s insid e o f th e righ t kic k
panel .
8 . Remov e th e harnes s cli p A for m th e AB S contro l
unit, the n remov e th e bol t a t lowe r sid e o f th e AB S
contro l unit .
9. Remov e th e multiple x contro l uni t (passenger's) .
10 . Remov e th e harnes s cli p B an d C .
11 . Remov e th e bol t a t rea r o f th e AB S contro l unit ,
the n pul l ou t th e AB S contro l unit .
HARNES S CLI P BCONNECTOR S(Inside th e
righ t kic k panel. )
AB S CONTRO L UNI T
HARNES SCLIP AHARNES S CLI P C
MULTIPLE X CONTRO LUNIT (PASSENGER'S )
12. Instal l th e AB S contro l uni t i n th e revers e orde r o f
removal .
Inspectio n
1. Chec k th e fron t an d rea r pulse r fo r chippe d o r dam -
age d teeth .
2 . Measur e th e ai r ga p betwee n th e whee l senso r an d
pulse r al l th e wa y aroun d whil e rotatin g th e pulser .
I f th e ga p exceed s 1. 0 m m (0.0 4 in) , chec k fo r a ben t
suspensio n arm .
Rear
Remov e th e rea r brak e dis c t o inspec t th e rea r whee l
senso r ai r gap .
Fron t
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Wheel Sensor Replacement

Install the sensors carefully to avoid twisting wires.

Front

6 mm BOLT

9.8 N-m (1.0 kgf-m, 7.2 Ibf-ft)

WHEEL SENSOR

Rear

6 mm BOLT

9.8 N-m (1.0 kgf-m, 7.2 Ibf-ft)

WHEEL SENSORProCarManuals.com

Special Tool s
Ref. No.Too l Numbe rDescriptio nQtyPag e Referenc e
07PAZ-001010 0 SC S Servic e Connecto r 19-15 9
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Component Locations

SERVICE CHECK CONNECTOR (2P)

ABS CONTROL UNIT

ECT SENSOR

TCS CONTROL VALVE

SENSOR

RIGHT-FRONT

WHEEL SENSOR

TCS CONTROL

VALVE ACTUATOR
LEFT-REAR

WHEEL SENSOR

GAUGE ASSEMBLY

ECU (PCM) (20 A) FUSE

UNDER-HOOD FUSE/RELAY BOX

BATTERY (120 A) FUSE
UNDER-HOOD RELAY BOX C

FAIL-SAFE RELAY

IG SW (50 A) FUSE

METER (15 A) FUSE
METER RELAY
TCS (15 A) FUSE
STOP/HORN

'96 - 98 models: (15 A) FUSE

'99 model: (20 A) FUSE
UNDER-HOOD FUSE/RELAY BOX
UNDER-HOOD RELAY BOX C

LEFT-FRONT WHEEL SENSOR
POWERTRAIN

CONTROL MODULE (PCM)
STEERING ANGLE SENSOR

RIGHT-REAR WHEEL SENSOR

TCS CONTROL UNIT

TCS/CRUISE SWITCH

UNDER-DASH FUSE/RELAY BOX

UNDER-DASH FUSE/RELAY BOX

METER (7.5 A) FUSE

TCS INDICATOR LIGHTProCarManuals.com