steering ACURA RL KA9 1996 Service Service Manual

Steering Angl e Senso r
Replacemen t
SCREW
CAUTION : D o no t damag e o r dro p th e steerin g angl e senso r a s it i s sensitive .
1 . Remov e th e combinatio n switc h (se e sectio n 17 ).
2 . Remov e th e circli p an d screw , the n remov e th e steerin g angl e senso r fro m th e combinatio n switch .
3 . Installatio n i s i n th e revers e orde r o f removal .
CAUTION : D o no t appl y an y greas e o r oi l t o th e steerin g angl e sensor .
4 . Perfor m th e steerin g angl e senso r syste m check .
STEERIN G ANGL E SENSO R
COMBINATIO N SWITC H
CANCE L CA M
WAV E WASHE R
SPRING
LOWER COVE RJOINT
CIRCLI P
NOTE: Whe n reassembling , alig n th e tab s o f th e join t an dcance l ca m to th e sli t o f th e steerin g angl e sensor .
Steering Angl e Senso r Syste m Chec k
1. Star t th e engine .
2 . Pus h th e TC S switc h 3 time s withi n 3 seconds .
3 . Slowl y tur n th e steerin g whee l clockwis e mor e tha n 1. 5 turns .
NOTE :
Start checkin g afte r th e steerin g whee l move s a t leas t 1. 5 turns .
Tur n th e steerin g whee l slowly , n o faste r tha n 1 tur n in 4 seconds .
4 . Pus h th e TC S switc h twic e withi n 3 seconds .
5 . Slowl y tur n th e steerin g whee l counterclockwise , an d chec k th e numbe r o f time s th e TC S indicato r ligh t flashe s afte r
th e whee l ha s move d abou t 1 turn .
NOTE :
Start countin g afte r th e steerin g whee l move s 1 turn .
Tur n th e steerin g whee l slowly , n o faste r tha n 1 tur n in 4 seconds .
Alway s maintai n th e sam e numbe r o f rotations .
Standar d numbe r o f time s th e TC S indicato r ligh t flashes : 3 time s
6 . I f ther e is a n abnormality , chec k th e troubleshootin g flowchar t (se e pag e 19-168 ).
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Component Locations

SERVICE CHECK CONNECTOR (2P)

RIGHT-REAR WHEEL SENSOR

VSA CONVERTER UNIT

VSA MODULATOR

CONTROL UNIT

TCS CONTROL

VALVE SENSOR

RIGHT-FRONT

WHEEL SENSOR
PRECHARGE

PUMP MOTOR
STEERING

ANGLE SENSOR

YAW RATE/LATERAL

ACCELERATION SENSOR

TCS CONTROL VALVE

ACTUATOR

UNDER-HOOD

RELAY BOX C
UNDER-HOOD

FUSE/RELAY BOX
VSA OFF SWITCH

UNDER-DASH FUSE/RELAY BOX

LEFT-FRONT WHEEL SENSOR
LEFT-REAR

WHEEL SENSOR

GAUGE ASSEMBLY

ABS INDICATOR

VSA SYSTEM INDICATOR
UNDER-HOOD FUSE/RELAY BOX

STOP/HORN

(20 A) FUSE

BRAKE SYSTEM INDICATOR

VSA ACTIVATION INDICATOR

UNDER-DASH FUSE/RELAY BOX
TCS

(15 A) FUSE

VSA

(20 A) FUSE

METER

(15 A) FUSE

ECU

(20 A) FUSE

METER

(7.5 A) FUSE
BATTERY

(120 A) FUSE

VSA MOTOR (40 A) FUSE

IG SW (50 A) FUSE

UNDER-HOOD RELAY BOX C

FAIL-SAFE RELAY

GAUGE RELAY
PCM

R/C MIRROR

(7.5 A) FUSEProCarManuals.com

Troubleshooting
DTC 27: Steering Angle Sensor
Perform the steering angle sen-
sor neutral position check proce-
dure (see page 19-268).
Is it OK?
Check the steering angle sensor
installation.
Is it correct?
Check for a short to power in the CAN circuit:
1. Disconnect the VSA control unit 42P connector, the steer-
ing angle sensor 4P connector
and the VSA converter unit
26P connector.2. Turn the ignition switch ON (II).
3. Measure the voltage between body ground and the VSA con-
trol unit 42P connector terminalNo. 24 and 40 individually.
Is there battery voltage?
Is there continuity?
Check for an open in the YRSA
YU circuit:
Check for continuity between the
VSA control unit 42P connector
terminal No. 39 and the steering angle sensor 4P connector termi-
nal No. 4.
Is there continuity?
(To page 19-229)
Perform the steering angle sen-
sor neutral position memorizing
procedure (see page 19-268).
Install the steering angle sensorcorrectly.
VSA CONTROL UNIT 42P CONNECTOR
Repair short to power in the wire
between the steering angle sen-
sor and the VSA control unit.
Wire side of female terminals
Repair short to body ground in
the wire between the steeringangle sensor and the VSA con-trol unit.
Repair open in the wire between
the steering angle sensor and the VSA control unit.STEERING ANGLE SENSOR4P CONNECTOR
Wire side of female terminals
Check for a short to body ground
in the CAN circuit:1. Turn the ignition switch OFF.
2. Check for continuity between body ground and the VSA con-
trol unit 42P connector terminal
No. 24 and 40 individually.
(RED/BLU)
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(From page 19-228)
Check for an open in the YRSAYM circuit:
Check for continuity between the
VSA control unit 42P connector
terminal No. 21 and the steering angle sensor 4P connector termi-
nal No. 1.
Is there continuity?
Check for an open in the CAN (+)
circuit:
Check for continuity between the
VSA control unit 42P connector
terminal No. 24 and the steering angle sensor 4P connector termi-
nal No. 2.
Is there continuity?
Check for an open in the CAN (-)
circuit: Check for continuity between the
VSA control unit 42P connector
terminal No. 40 and the steering angle sensor 4P connector termi-
nal No. 3.
Is there continuity?
Check the steering angle sensor: 1. S u b s t i t u t e a k n o w n - g o o d steering angle sensor.
2. Connect all of disconnected connector.
3. Clear the DTC.4. Test drive the vehicle around anumber of corners.
5. Verify the DTC.
Is DTC 27 indicated? VSA CONTROL UNIT 42P CONNECTOR
Repair open in the wire between
the steering angle sensor and
the VSA control unit. Wire side of
female terminals
STEERING ANGLESENSOR 4PCONNECTOR
Wire side of female terminals
Replace the steering angle sensor.
Repair open in the wire between
the steering angle sensor and
the VSA control unit.
Repair open in the wire between
the steering angle sensor and
the VSA control unit.
Replace the VSA modulator-con-
trol unit.
YRSA YM
(RED/WHT)
(RED)
(WHT)
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DTC 84 : Steerin g Angl e Senso r Neutra l Positio n
Perform th e steerin g angl e sen -
so r neutra l positio n chec k proce -
dur e (se e pag e 19-268 ).
Is it OK ?Perfor m th e steerin g angl e sen -
so r neutra l positio n memorizin g
procedur e (se e pag e 19-268 ).
Chec k th e steerin g angl e sensor :
1. Substitut e a known-goo dsteering angl e sensor .2. Connec t al l o f disconnecte d
connector .
3. Clea r th e DTC .4. Test-driv e th e vehicl e aroun da numbe r o f corners .
5 . Verif y th e DTC .
I s th e DT C 8 4 indicated ? Replac
e th e steerin g angl e sensor .
Replac e th e VS A modulator -
contro l unit .
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DTC 93: Throttle Position Sensor/Steering Angle Sensor
NOTE: When both the VSA indicator and the MIL are ON, troubleshoot the PGM-FI system first.
Check for an open in the THL1circuit:1. Turn the ignition switch ON (II).
2. Measure the voltage between
the VSA converter unit 26Pconnector terminal No. 7 and body ground when the throt-
tle valve is fully closed and
fully open.
Is the voltage as specified?
— Fully closed: about 0.5 V
— Fully open: about 4.5 V
Check the steering angle sensor
4P connector connection.
Is the connector disconnected?
Check for an open in the steering
angle sensor circuits:
1. Turn the ignition switch OFF.2. Disconnect the VSA controlunit 42P connector and thesteering angle sensor 4P con-nector.
3. Check for continuity between
the VSA control unit 42P con-nector terminal No. 39 and
the steering angle sensor 4P
connector terminal No. 4.
4. Check for continuity between
the VSA control unit 42P con-nector t e r m i n a l No. 21 and
the steering angle sensor 4P
connector terminal No. 1.
5. Check for continuity between
the VSA control unit 42P con-nector terminal No. 24 and
the steering angle sensor 4P
connector terminal No. 2.
6. Check for continuity between
the VSA control unit 42P con-nector terminal No. 40 and
the steering angle sensor 4P
connector terminal No. 3.
Is there continuity?
The system is OK at this time. If the problem recurs, replace
the VSA converter unit. VSA CONVERTER UNIT 26P CONNECTOR
Repair open in the wire between
the PCM and the VSA converter unit.
Connect the steering angle sen-
sor 4P connector. VSA CONTROL UNIT 42P CONNECTORWire side of female terminals
STEERING ANGLE SENSOR 4P CONNECTOR Wire side of female terminals
Repair open in the wire between
the steering angle sensor and
the VSA control unit. Wire side of female terminals
YRSA YM
(RED/WHT) CAN (-)
(WHT)
CAN (+) (RED) YRSA YU
(RED/BLU)
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Steering Angl e Senso r
Replacemen t
CAUTION: D o no t damag e o r dro p th e steerin g angl e senso r a s it i s sensitive .
1 . Remov e th e combinatio n switc h (se e sectio n 17 ).
2 . Remov e th e circli p an d screw , the n remov e th e steerin g angl e senso r fro m th e combinatio n switch .
3 . Instal l i n th e revers e orde r o f removal .
CAUTION : D o no t appl y an y greas e o r oi l t o th e steerin g angl e sensor .
4 . Perfor m th e steerin g angl e senso r neutra l positio n memorizin g procedur e (se e pag e 19-268 ).
SCREW S
STEERIN G ANGL E SENSO R
COMBINATIO N SWITC H
CANCEL CA M
WAV E WASHE R
SPRIN G
JOINTLOWE R COVE R
CIRCLI P
NOTE: Whe n reassembling , align the tab s o f th e join t an dcance l ca m to th e sli t o f th e steerin g angl e sensor .
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Steering Angl e Senso r
Neutral Positio n Chec k an d Memorizin g
Check
1. Connec t th e SC S servic e connecto r t o th e servic e chec k connecto r (2P ) unde r th e glov e box .
2 . Tur n th e ignitio n switc h O N (II) . Th e VS A activatio n indicato r come s o n the n goe s off .
3 . Pres s th e VS A of f switc h on e tim e befor e th e VS A activatio n indicato r come s o n again .
4 . Chec k tha t th e VS A activatio n indicato r come s o n whe n th e steerin g whee l i s i n th e straigh t ahea d positio n (neutra l
position) , an d th e indicato r goe s of f whe n th e steerin g whee l turn s t o th e righ t o r lef t mor e tha n 2. 5 degrees .
5 . I f th e VS A activatio n indicato r doe s no t com e o n o r g o off , perfor m th e neutra l positio n memorizin g procedure .
Memorizin g
1 . Connec t th e SC S servic e connecto r t o th e servic e chec k connecto r (2P ) unde r th e glov e box .
2 . Tur n th e ignitio n switc h O N (II) .
3 . Pres s th e VS A of f switc h twic e befor e th e VS A activatio n indicato r come s o n again .
4 . Th e VS A activatio n indicato r come s o n fo r 0. 3 seconds , the n th e indicato r goe s of f 0. 2 second s an d come s on .
5. Tur n th e steerin g whee l fro m th e straigh t ahea d positio n to th e righ t unti l th e VS A activatio n indicato r goe s of f withi n 8
second s afte r th e VS A activatio n indicato r come s on .
6 . Tur n th e steerin g whee l fro m th e straigh t ahea d positio n the n t o th e lef t unti l th e VS A activatio n indicato r goe s of f
withi n 8 second s afte r performin g ste p 5 .
7 . Tur n th e steerin g whee l t o th e straigh t ahea d positio n an d press the VS A of f switc h withi n 1 2 second s afte r performin g
ste p 6 . Th e VS A activatio n indicato r goe s of f fo r 0. 3 seconds , the n th e VS A syste m shift s t o th e neutra l positio n chec k
mode .
8 . Chec k tha t th e VS A activatio n indicato r come s o n whe n th e steerin g whee l i s i n th e straigh t ahea d positio n (neutra l
position) , an d th e indicato r goe s of f whe n th e steerin g whee l turn s t o th e righ t o r lef t mor e tha n 2. 5 degrees .
9. Pres s th e VS A of f switch . Th e VS A activatio n indicato r wil l blink . I f th e indicato r doe s no t blink , repea t th e neutra l posi -
tion memorizin g procedure .
Push th e switc h twice .
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Headlights
Combinatio n Ligh t Switc h
Replacemen t
1. Remov e th e dashboar d lowe r cove r (se e sectio n 20 ).
2 . Remove the steering column covers (see
section 17 ).
3 . Disconnec t th e 14 P connecto r fro m th e combinatio n
ligh t switch , the n remov e th e tw o screw s an d th e
switch .
4 . Instal l th e combinatio n ligh t switc h i n th e revers e
orde r o f removal .
COMBINATIO N LIGH T SWITC H
14
P CONNECTO R
Replacemen t
CAUTION: Headlight s becom e ver y ho t i n use ; d o no t
touc h the m o r th e attachin g hardwar e immediatel y
afte r the y hav e bee n turne d off .
1 . Remov e th e fron t bumpe r an d fron t bumpe r uppe r
bea m (se e sectio n 20 ).
2 . Disconnec t th e connectors .
3 . Remov e th e fou r mountin g bolts , the n remov e th e
headligh t assembly .
HEADLIGH T
ASSEMBL Y
'9 6 - 9 8 models :
HEADLIGHT : 60/5 5 W
FRON T TUR N SIGNA L LIGHT : 2 1 W
FRON T PARKIN G LIGHT : 5 W x 2
FRON T FO G LIGHT : 5 5 W
SID E MARKE R LIGHT : 5 W
'9 9 - 0 1 models :
HEADLIGH T LO W BEAM : 3 5 W
HEADLIGH T HIG H BEAM : 5 5 W
FRON T TUR N SIGNAL/PARKIN G LIGHT : 27/ 8 W
SID E MARKE R LIGHT : 5 W
4. Instal l th e headligh t i n th e revers e orde r o f removal .
5 . Afte r replacement , adjus t th e headlight s t o loca l
requirements .
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8. Chec k fo r continuit y betwee n th e cabl e ree l 4 P
connecto r No . 2 termina l an d combinatio n switc h
harnes s 22 P connecto r No . 1 9 terminal .
22P CONNECTO R
4 P CONNECTO R
Wir e sid e o f
femal e terminal s
Wir
e sid e o f
femal e terminal s
• I f ther e i s continuity / g o t o ste p 9 .
• I f ther e i s n o continuity , chec k fo r a n ope n i n th e
wir e o f th e combinatio n switc h harness .
9 . Mak e sur e yo u hav e th e anti-thef t cod e fo r th e
radio , the n writ e dow n th e frequencie s fo r th e
radio' s prese t buttons .
10 . Tur n th e ignitio n switc h OFF .
11 . Disconnec t th e batter y negativ e cable , the n
disconnec t th e positiv e cable , an d wai t a t leas t 3
minutes .
12 . Remov e th e driver' s airba g (se e sectio n 24 ).
13 . Chec k fo r continuit y betwee n th e hor n switc h
positiv e termina l an d steerin g whee l nu t wit h th e
hor n switc h pressed .
HORN SWITC H
POSITIV E TERMINA L
STEERING WHEE LNUT
'96 - 9 8 models : '9
9 - 0 0 models :
STEERIN G WHEE L NU T
HOR N SWITC H
POSITIV E TERMINA L
• I f ther e i s continuity ,
chec k th e cabl e ree l (se e sectio n 24 )
chec k th e set/resume/cance l switc h
(se e sectio n 4 )
• I f ther e i s n o continuity , replac e th e hor n switch .
14. I f al l th e test s prov e OK , reinstal l an d reconnec t al l
remove d parts , the n reconnec t th e batter y cables .
15 . Ente r th e anti-thef t cod e fo r th e radio , the n ente r th e
customer' s radi o statio n presets .
16 . Confir m prope r syste m operation :
• Tur n th e ignitio n switc h O N (II) ; th e SR S
indicato r ligh t shoul d com e o n fo r abou t 6
second s an d the n g o off .
• Mak e sur e th e hor n butto n works .
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