ACURA RL KA9 1996 Service Repair Manual

Troubleshooting
VSA Syste m Indicato r Doe s No t Com e O n (cont'd )
(From pag e 19-215 )
Chec k fo r loos e terminal s i n th e
gaug e assembl y 22 P connector . I f
th e connecto r i s OK , replac e th e
printe d circui t boar d in th e gaug e
assembly .
GAUGE ASSEMBL Y 22 P CONNECTO R
Wir e sid e o f femal e terminal s
Repai r ope n in th e wir e betwee n
th e gaug e assembl y an d th e
VS A contro l unit .
Repai r poo r groun d (G401 ,
G402) .
I
s ther e continuity ?
Chec
k fo r a n ope n in th e indicato r
GN D circuit :
1 . Connec t th e gaug e assembl y
30P connector .
2 . Disconnec t th e gaug e assem -
bly 22 P connector .3. Chec k fo r continuit y betwee n
th e gaug e assembl y 22 P con -
necto r termina l No . 1 0 an d
bod y ground .
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VSA Syste m Indicato r Doe s No t G o Of f
Chec k th e VS A (2 0 A ) fus e i n th e
under-hoo d fuse/rela y box , an d
reinstal l th e fus e i f i t i s OK .
I s th e fus e OK ?
Chec k th e R/ C MIRRO R (7. 5 A ) fus ein th e under-das h 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 ?
Chec k fo r a n ope n in th e + B FS R
circuit :
1 . Disconnec t th e VS A contro l
uni t 42 P connector .
2 . Measur e th e voltag e betwee n
termina l No . 6 an d bod yground .
I s ther e batter y voltage ?
I s ther e batter y voltage ?
Chec k fo r a n ope n in th e GN D cir -
cuit :
1. Tur n th e ignitio n switc h OFF .2. Chec k fo r continuit y betwee nthe VS A contro l uni t 42 P con -necto r termina l No . 5 an d bod yground .
I s ther e continuity ?
(T o pag e 19-218 ) Replac
e th e fuse , an d recheck . I f
th e fus e i s blown , chec k fo r a
shor t t o bod y groun d in thi s fus e
circuit . I f th e circui t i s OK , replac e
th e VS A modulator-contro l unit .
Replac e th e fuse , an d recheck . I f
th e fus e is blown , chec k fo r a shor t
t o bod y groun d in thi s fus e circuit .
VSA CONTRO L UNI T 42 P CONNECTO R
Wir e sid e o f femal e terminal s
Repai r ope n in th e wir e betwee n
th e VS A (2 0 A ) fus e an d th e VS A
contro l unit .
Repai r ope n in th e wir e betwee nthe R/ C MIRRO R (7. 5 A ) fus e an d
th e VS A contro l unit .
Repai r ope n in th e wir e betwee n
th e VS A contro l uni t an d bod y
ground .Repair poo r groun d (G251) .
Chec
k fo r a n ope n in th e IG 2 cir -
cuit :1. Tur n th e ignitio n switc h O N (II) .
2 . Measur e th e voltag e betwee n
the VS A contro l uni t 42 P con -necto r termina l No . 2 3 an d
bod y ground .
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Troubleshooting
VSA Syste m Indicato r Doe s No t G o Of f (cont'd )
(From pag e 19-217 )
Chec k th e VS A contro l unit :
1 . Tur n th e ignitio n switc h O N (II) .
2. Connec t th e VS A contro l uni t42P connecto r termina l No . 3 3an d bod y groun d wit h ajumpe r wire .
Doe s th e VS A syste m indica -
tor g o off ?
Chec k th e gaug e assembly :
Connec t th e gaug e assembl y 30 P
connecto r termina l No . 2 2 an dbod y groun d wit h a jumpe r wire .
Doe s th e VS A syste m indica -
tor g o off ?
Repai r ope n i n th e wir e betwee n
th e gaug e assembl y an d th e VS A
contro l unit . VS
A CONTRO L UNI T 42 P CONNECTO R
Chec k fo r loos e terminal s in th e
VS A contro l uni t 42 P connector .
I f necessary , substitut e a known -
goo d VS A modulator-contro l
unit , an d recheck . Wir
e sid e o f femal e terminal s
GAUG E ASSEMBL Y 30 P CONNECTO R
Chec k fo r loos e terminal s in th e
gaug e assembl y 30 P connector .
I f th e connecto r i s OK , replac e
the printe d circui t boar d in th egaug e assembly .
JUMPERWIRE
Termina l sid e o f femal e terminal s
JUMPE
R
WIRE
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VSA Activation Indicator Does Not Come On

Does the brake system indica-

tor come on?

Check the VSA activation indica-

tor:

1. Turn the ignition switch OFF.

2. Check the VSA activation indi-

cator bulb in the gauge assem-

bly.

Is the bulb OK?

Check the VSA control unit:

1. Disconnect the VSA control

unit 42P connector.

2. Turn the ignition switch ON (II).

3. Connect the VSA control unit

42P connector terminal No. 7

and body ground with a

jumper wire.

Does the VSA activation

indicator come on?

Check the gauge assembly:

Connect the gauge assembly 22P

connector terminal No. 2 and

body ground with a jumper wire.

Does the VSA activation

indicator come ON?

Repair open in the wire between

the gauge assembly and the VSA

control unit.
Gauge relay stuck OFF.

Blown METER (15 A) fuse in the

under-hood fuse/relay box.

Blown METER (7.5 A) fuse in

the under-dash fuse/relay box.

Repair open in the wire between

the METER (15 A) fuse and the

gauge assembly.

Repair open in the wire between

the METER (7.5 A) fuse and body

ground.

Replace the under-hood fuse/

relay box or under-dash fuse/

relay box. (Open circuit inside

the
box.)

Replace the VSA activation indi-

cator bulb.
VSA CONTROL UNIT 42P CONNECTOR

JUMPER

WIRE

Check for loose terminals in the

VSA control unit 42P connector.

If necessary, substitute a known-

good VSA modulator-control

unit, and recheck.

JUMPER

WIRE
Wire side of female terminals

GAUGE ASSEMBLY 22P CONNECTOR

Wire side of female terminals

Check for loose terminals in the

gauge assembly 22P connector.

If the connector is OK, replace

the printed circuit board in the

gauge assembly.ProCarManuals.com

Troubleshooting

VSA Activation Indicator Does Not Go Off

Check for a short to body ground

in the INFO circuit:

1. Disconnect the VSA control

unit 42P connector.

2. Turn the ignition switch ON (II).

Does the VSA activation

indicator go off?
Repair short to body ground in the

wire between the gauge assembly

and the VSA control unit.

Check for loose terminals in the

VSA control unit 42P connector.

If necessary, substitute a known-

good VSA modulator-control

unit, and recheck.ProCarManuals.com

DTC 11, 13, 15, 17: Wheel Sensor (Open/Short to Body Ground/Short to Power)

Check for a short to power in the

wheel sensor circuit:

1. Disconnect the VSA control

unit 42P connector.

2. Start the engine.

3. Measure the voltage between

the VSA control unit 42P con-

nector appropriate wheel sen-

sor (+) circuit terminal and

body ground (see table).
DTC

11 (Right-front)

13 (Left-front)

15 (Right-rear)

17 (Left-rear)
Appropriate Terminal

(+) Side

No. 16:FRS(+)

No. 28:FLS(+)

No. 31: RRS (+)

No.14: RLS(+)
(-) Side

No. 15: FRS(-)

No. 13:FLS (-)

No. 30:
RRS
(-)

No. 29: RLS (-)
VSA CONTROL UNIT 42P CONNECTOR

Is there battery voltage?
Repair short to power in the {+)

or (-) circuit wire between the

VSA control unit and appropriate

wheel sensor.
Wire side of female terminals

Check for a short to body ground

in the wheel sensor circuit:

1. Turn the ignition switch OFF.

2. Check for continuity between

the VSA control unit 42P con-

nector appropriate wheel sen-

sor (+) circuit terminal and

body ground (see table).

Is there continuity?
Repair short to body ground in

the (+) or (-) circuit wire between

the VSA control unit and the

appropriate wheel sensor.

Replace the appropriate wheel

sensor.

Check for an open in the wheel

sensor circuit:

Measure the resistance between

the VSA control unit 42P connector

appropriate wheel sensor (+) and

(-) circuit terminals (see table).

Is the resistance between

450 - 2,000 at 68°F?
• Repair open in the (+) or (-) cir-

cuit wire between the VSA con-

trol unit and the appropriate

wheel sensor.

• Replace the appropriate wheel

sensor.

Check for loose terminals in the

VSA control unit 42P connector.

If necessary, substitute a known-

good VSA modulator-control

unit, and recheck.ProCarManuals.com

Troubleshooting
DTC 12 , 14 , 16 , 18 : Whee l Senso r (Electrica l Noise/Intermitten t Interruption )
NOTE: If the ABS indicator comes on for the reasons described below, the indicator should go off when you test drive the
vehicle a t speed s abov e 1 9 mp h (3 0 km/h) .
Onl y th e driv e wheel s rotate d
Th e vehicl e spu n
Electrica l nois e
Is ther e continuity ?
DTC
12
1 4
16
18
Appropriat e Whee l Senso r
Right-fron t
Left-fron t
Right-rea r
Left-rear
Reinstal l o r replac e th e appropri -
at e whee l senso r o r pulser . VS
A CONTRO L UNI T 42 P CONNECTO R
DTC
12 (Right-front )
1 4 (Left-front )
16 (Right-rear )
18 (Left-rear )
Appropriat e Termina l
(+ ) Sid e
No. 16:FRS(+ )
No. 28:FLS(+ )
No. 31:RRS(+ )
No. 14:RLS(+ )
(-) Sid e
No. 15:FRS( - )
No . 13 : FL S (- )
No . 30 : RR S (- )
No . 29 : RL S (- )
Wir e sid e o f femal e terminal s
Repair shor t t o wir e betwee n th eappropriat e whee l senso r (+ ) an d
(- ) circuits .
DTC
12 (Right-front )
1 4 (Left-front )
16 (Right-rear )
18 (Left-rear )
Appropriat e
Termina l
No. 16:FRS(+ )
No. 28:FLS(+ )
No.31:RRS(+ )
No. 14:RLS(+ )
Other Termina l
No. 28 : FL S (+)
No . 16:FRS(+ )
No. 16 : FR S (+ )
No . 16 : FR S (+ )
No . 31:RRS(+ )
No . 31:RRS(+ )
No. 28 : FL S (+ )
No . 28 : FL S (+ )
No . 14:RLS(+ )
No. 14:RLS(+ )
No. 14 : RL S (+ )
No . 31 : RR S (+ )
Repai r shor t t o wir e betwee n th e
appropriat e whee l senso r an d
th e othe r whee l sensor .
Clear th e DTC , an d test-driv e th evehicle . I f th e AB S indicato rcomes o n an d th e sam e DT C i sindicated , replac e th e VS A mod -ulator-contro l unit .
Chec k fo r a shor t t o anothe r wir ein th e whee l senso r circuit :Check fo r continuit y betwee n th eappropriat e whee l senso r (+ ) circui ttermina l an d othe r whee l senso r(+) circui t terminal s (se e table) .
Is ther e les s tha n 45 0 ?
Visuall y chec k fo r appropriat ewheel senso r an d pulse r installa -tion (se e table) .
Are the y installe d correctly ?
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DTC 25 : Ya w Rat e Senso r
Do thes e component s mee t
th e norma l standards ?
Check fo r a shor t t o powe r i n th eYR S RE F circuit :
1 . Disconnec t th e VS A contro l
uni t 42 P connector , th e ya w
rate/latera l acceleratio n sen -
so r 6 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 VS A contro l uni t 42 P con -
necto r termina l No . 1 0 an d
bod y ground .
I s ther e batter y voltage ?
Chec k fo r a shor t t o powe r i n th e
YRS T circuit :Measur e th e voltag e betwee n th e
VS A contro l uni t 42 P connecto r
termina l No . 9 an d bod y ground .
I s ther e batter y voltage ?
Chec k fo r a shor t t o powe r i n th e
YRS S circuit :Measur e th e voltag e betwee n th e
VS A contro l uni t 42 P connecto r
termina l No . 4 1 an d bod y ground .
I s ther e batter y voltage ?
(To pag e 19-224 )
Repair t o norma l standards .
VSA CONTRO L UNI T 42 P CONNECTO R
Wir e sid e o f femal e terminal s
Repai r shor t t o powe r i n th e wir e
betwee n th e ya w rate/latera l
acceleration senso r an d th e VS Acontro l unit .
Repai r shor t t o powe r i n th e wir e
betwee n th e ya w rate/latera l
acceleratio n senso r an d th e VS A
contro l unit .
Repai r shor t t o powe r i n th e wir e
betwee n th e ya w rate/latera l
acceleration senso r an d th e VS Acontro l unit .
Chec
k th e wheels , tires , suspen -
sion , an d alignment .
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Troubleshooting
DTC 25 : Ya w Rat e Senso r (cont'd )
(From pag e 19-223 )
Chec k fo r a shor t t o bod y groun d
i n th e ya w rat e senso r circuit :
1 . Tur n th e ignitio n switc h OFF .
2 . Disconnec t th e steerin g angl e
senso r 4 P connector .
3. Chec k fo r continuit y betwee nbody groun d an d th e VS Acontro l uni t 42 P connecto rterminal No . 9 , 10 , 21 , 39 , 4 1individually .
Are ther e continuity ?
Chec k fo r a n ope n i n th e YR S
REF circuit :
Chec k fo r continuit y betwee n th e
VS A contro l uni t 42 P connecto rterminal No . 1 0 an d th e ya w rate /
latera l acceleratio n senso r 6 P con -
necto r termina l No . 3 .
I s ther e continuity ?
Chec k fo r a n ope n in th e YRS T
circuit :
Chec k fo r continuit y betwee n th e
VS A contro l uni t 42 P connecto r
termina l No . 9 an d th e ya w rate /
latera l acceleratio n senso r 6 P
connecto r termina l No . 2 .
I s ther e continuity ?
Chec k fo r a n ope n i n th e YRS S
circuit :
Chec k fo r continuit y betwee n th e
VS A contro l uni t 42 P connecto rterminal No . 4 1 an d th e ya w rate /
latera l acceleratio n senso r 6 P
connecto r termina l No . 6 .
I s ther e continuity ?
(To pag e 19-225 )
VSA CONTRO L UNI T 42 P CONNECTO R
Wir e sid e o f femal e terminal s
Repai r shor t t o bod y groun d in
th e wir e betwee n th e ya w rate /
latera l acceleratio n senso r an d
th e VS A contro l unit .
Repai r ope n in th e wir e betwee n
th e ya w rate/latera l acceleratio n
senso r an d th e VS A contro l unit .
YAW RATE/LATERA LACCELERATION SENSO R6P CONNECTO R
Wire sid e o f femal e terminal s
Repai r ope n in th e wir e betwee n
th e ya w rate/latera l acceleratio n
senso r an d th e VS A contro l unit .
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(From pag e 19-224 )VSA CONTRO L UNI T 42 P CONNECTO R
Chec k fo r a n ope n in th e YRS A
Y U circuit :
Chec k fo r continuit y betwee n th e
VS A contro l uni t 42 P connecto r
termina l No . 3 9 an d th e ya w rate /
latera l acceleratio n senso r 6 P
connecto r termina l No . 1 .
YA W RATE/LATERA LACCELERATION SENSO R6P CONNECTO R
I s ther e continuity ? Repai
r ope n in th e wir e betwee n
th e ya w rate/latera l acceleratio n
senso r an d th e VS A contro l unit . Wir
e sid e o f
femal e terminal s
Chec k fo r a n ope n in th e YRS A
Y M circuit :
Chec k fo r continuit y betwee n th e
VS A contro l uni t 42 P connecto rterminal No . 2 1 an d th e ya w rate /
latera l acceleratio n senso r 6 P
connecto r termina l No . 4 .
I s ther e continuity ? Repai
r ope n in th e wir e betwee n
th e ya w rate/latera l acceleratio n
senso r an d th e VS A contro l unit .
Chec k th e ya w rat e sensor :
1 . Substitut e a known-goo d ya w
rate/latera l acceleratio n sensor .
2 . Connec t al l o f disconnecte d
connector.3. Clea r th e DTC .4. Tes t driv e th e vehicl e aroun d anumbe r o f corners .
5 . Verif y th e DTC .
I s DT C 2 5 indicated ? Replac
e th e ya w rate/latera l
acceleratio n sensor .
Replac e th e VS A modulator -
contro l unit . Wir
e sid e o f
femal e terminal s
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