ACURA RL KA9 1996 Service Repair Manual

Troubleshooting
DTC 82 : Whee l Spee d Interna l Circui t
Is DT C 8 2 indicated ? Intermitten
t failure ; th e vehicl e is
O K at thi s time .
Proble m verification :1. Clea r th e DTC .2. Test drive the vehicle.3. Verif y th e DTC .
Replac e th e VS A modulator -control unit .
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DTC 83 : VS A Inhibitio n
Is DT C 3 5 o r 3 6 indicated ?
To pag e 19-24 8 whe n th e DT C 3 5is indicated .
T o pag e 19-25 0 whe n th e DT C 3 6
i s indicated .
NOTE : Perfor m th e PGM-F I troubleshootin g whe n a
PGM-F I DT C othe r tha n 3 5 an d 3 6 indicated .
Check th e PC M (T C STB) :1. Tur n th e ignitio n switc h O N (II) .
2 . Measur e th e voltag e betwee n
th e PC M connecto r C (12P ) ter -
mina l No . 1 2 an d bod y ground . PC
M CONNECTO R C (12P )
I s ther e abou t 5 V ?
Replac e th e PCM .Wire sid e o f femal e terminal s
Check th e PC M (T C FC) :Measur e th e voltag e betwee n th e
PC M connecto r C (12P ) termina l
No . 1 0 an d bod y ground .
I s ther e abou t 2. 5 V ?
Replac e th e PCM .
Check fo r loos e terminal s in th e
VS A converte r uni t 26 P connec -
tor . I f necessary , substitut e a
known-goo d VS A converte r unit ,
and recheck .
Check fo r a PGM-F I DT C (se e sectio n 11 ).
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Troubleshooting
DTC 83 : VS A Inhibitio n (cont'd )
(With DT C 35 fro m pag e 19-247 )
Check fo r a shor t t o bod y groun din th e T C ST B circuit :
1 . Tur n th e ignitio n switc h OFF .
2 . Disconnec t th e PC M connec -
tor C (12P ) and th e VS A con -verte r uni t 26 P connector .
3 . Chec k fo r continuit y betwee n
th e VS A converte r uni t 26 P
connecto r termina l No . 2 4an d bod y ground .
I s ther e continuity ?
Check fo r a shor t t o bod y groun din th e T C F C circuit :
Chec k fo r continuit y betwee n th e
VS A converte r uni t 26 P connecto rterminal No . 2 2 an d bod y ground .
I s ther e continuity ?
Chec k the VSA converte r uni t
(TC STB) :1. Connec t th e VS A converte runit 26 P connecto r an d th ePC M connecto r C (12P) .2. Rais e th e fron t o f th e vehicle ,
an d suppor t i t wit h safet y
stands.3. Star t th e engine .
4 . Measur e th e voltag e betwee n
th e VS A converte r uni t 26 P
connecto r termina l No . 2 4
an d bod y ground .
I s th e voltag e a s specified ?
— VS A is functioning : abou t O V
— VS A is no t functioning : abou t5V
(T o pag e 19-249 )
VSA CONVERTE R UNI T 26 P CONNECTO R
Wire sid e o f femal e terminal s
Repair shor t t o bod y groun d i nth e wir e betwee n th e PC M an d
th e VS A converte r unit .
Repai r shor t t o bod y groun d i nth e wir e betwee n th e PC M an d
th e VS A converte r unit .
Chec k fo r loos e terminal s i n th eVS A converte r uni t 26 P connec -
tor . I f necessary , substitut e a
known-goo d VS A converte r unit ,
and recheck .
NOTE: Sto p th e wheel s b y pressin g th e
brak e peda l lightly .
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(From pag e 19-248 )
Check th e VS A converte r uni t(TC FC) :Measur e th e voltag e betwee n th e
VS A converte r uni t 26 P connecto r
terminal No . 2 2 an d bod y ground .
NOTE: Us e th e 1 0 V rang e o r a simila r
rang e in a n analo g tester .
VSA IS NO T VS A ISFUNCTIONIN G FUNCTIONIN G
VS A CONVERTE R UNI T 26 P CONNECTO R
I s th e voltag e a s specified ?
— VS A is functionin g (maximum) :
abou t 1.5 V
— VS A is no t functioning : abou t
4.5V
Chec k fo r loos e terminal s i n th eVSA converte r uni t 26 P connec -
tor . I f necessary , substitut e a
known-goo d VS A converte r unit ,
and recheck .
NOTE: Sto p th e wheel s b y pressin g th e
brak e peda l lightly .
Check fo r a n ope n i n th e T C ST Bcircuit :Measur e th e voltag e betwee n th e
PC M connecto r C (12P ) termina l
No . 1 2 an d bod y ground . Wir
e sid e o f femal e terminal s
PCM CONNECTO R C (12P )
Is ther e abou t 5 V whe n
VS A is no t functioning ? Repai
r ope n in th e wir e betwee n
th e VS A converte r uni t an d th e
PCM .
Wire sid e o f femal e terminal s
Chec k fo r a n ope n in th e T C F C
circuit :Measur e th e voltag e betwee n th e
PC M connecto r C (12P ) termina l
No . 1 0 an d bod y ground . NOTE
: Us e th e 1 0 V rang e o r a simila r rang e
i n a n analo g tester .
VSA IS NO T VS A ISFUNCTIONIN G FUNCTIONIN G
I s ther e abou t 4. 5 V whe n
VS A is no t functioning ? Repai
r ope n in th e wir e betwee n
th e VS A converte r uni t an d th e
PCM .
Chec k fo r loos e terminal s i n th e
PC M connectors . I f necessary ,
substitut e a known-goo d PCM ,
and recheck .
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Troubleshooting
DTC 83 : VS A Inhibitio n (cont'd )
(With DT C 36 fro m pag e 19-247 )
Chec k fo r a shor t t o bod y groun d
i n th e T C FC circuit :
1 . Tur n th e ignitio n switc h OFF .
2 . Disconnec t th e PC M connec -
tor C (12P ) and th e VS A con -verte r uni t 26 P connector .
3 . Chec k fo r continuit y betwee n
th e VS A converte r uni t 26 P
connecto r termina l No . 2 2
an d bod y ground .
I s ther e continuity ?
Is ther e abou t 4. 5 V whe nVSA is no t functioning ?
Chec k fo r a n ope n in th e T C F C
circuit :Measur e th e voltag e betwee n th e
PC M connecto r C (12P ) termina l
No . 1 0 an d bod y ground .
I s ther e abou t 4. 5 V whe n
VS A is no t functioning ?
Check fo r loos e terminal s i n th ePCM connectors . I f necessary ,substitute a known-good PCM,and recheck .
VSA CONVERTE R UNI T 26 P CONNECTO R
Wire 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 PC M an d
th e VS A converte r unit .
VSA IS NO T VS A ISFUNCTIONIN G FUNCTIONIN G
NOTE : Us e th e 1 0 V rang e o r a simila r
rang e in a n analo g tester .
Check fo r loos e terminal s i n th eVSA converte r uni t 26 P connector .
I f necessary , substitut e a known -
goo d VS A converte r unit , an d
recheck .
NOTE: Us e th e 1 0 V rang e o r a simila r
rang e in a n analo g tester .
VSA IS NO T VS A ISFUNCTIONIN G FUNCTIONIN G
PCM CONNECTO R C (12P )
Repai r ope n in th e wir e betwee n
th e PC M an d th e VS A converte r
unit .
Wire sid e o f femal e terminal s
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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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Troubleshooting
DTC 86 : CA N Bu s Circui t
Check fo r a shor t t o powe r i n th eCA N circuits :1. Disconnec t th e VS A converte r
uni t 26 P connector , steerin g
angl e senso r 4 P connecto r
an d th e VS A contro l uni t 42 P
connector .2. Tur n th e ignitio n switc h O N (II) .3. Measur e th e voltag e betwee nbody groun d an d th e VS Acontro l uni t 42 P connecto rterminal No . 2 4 an d No . 4 0individually .
I s ther e batter y voltage ?
(T o pag e 19-253 )
VSA CONTRO L UNI T 42 P CONNECTO R
Wire sid e o f femal e terminal s
Repair shor t t o powe r i n th e wir ebetwee n th e steerin g angl e sen -
sor , VS A converte r unit , an d th e
VS A contro l unit .
Repai r shor t t o bod y groun d i nth e wir e betwee n th e steerin gangle sensor , VS A converte runit, an d th e VS A contro l unit .
Wire sid e o f femal e terminal s
Repai r ope n in th e wir e betwee n
the VS A contro l uni t an d th eVSA converte r unit . VS
A CONVERTE R UNI T 26 P CONNECTO R
I s ther e continuity ?
Check fo r a n ope n in th e CA N cir -cuit s (converte r side) :
1 . Chec k fo r continuit y betwee n
th e VS A contro l uni t 42 P con -
necto r termina l No . 2 4 an d
th e VS A converte r uni t 26 P
connecto r termina l No . 18 .
2 . Chec k fo r continuit y betwee n
the VS A contro l uni t 42 P con -necto r termina l No . 4 0 an d
th e VS A converte r uni t 26 P
connecto r termina l No . 19 .
I
s ther e continuity ?
Chec
k fo r a shor t t o bod y groun d
i n th e CA N circuits :
1 . Tur n th e ignitio n switc h OFF .
2 . Chec k fo r continuit y betwee n
bod y groun d an d th e VS A
contro l uni t 42 P connecto rterminal No . 2 4 an d No . 4 0individually .
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(From pag e 19-252 )
Check th e VS A converte r unit :1. Substitut e a known-goo d VS Aconverte r unit .2. Connec t al l o f disconnecte d
connector .
3 . Clea r th e DTC .
4. Tes t driv e th e vehicle .
5 . Verif y th e DTC .
I s th e DT C 8 6 indicated ?
Replace th e VS A converte r unit .
Replac e th e VS A modulator -
contro l unit .
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Troubleshooting
DTC 88 : F l Communicatio n
Check fo r a shor t t o bod y groun d
i n th e SD L circuits :
1 . Disconnec t th e PC M connec -
tor E (26P ) and th e VS A con -verte r uni t 26 P connector .2. Chec k fo r continuit y betwee nbody groun d an d th e VS Aconverte r uni t 26 P connecto rterminal No . 9 an d No . 1 1individually .
Are ther e continuity ?
Check fo r a n ope n in th e SD L cir -
cuits :
1. Chec k fo r continuit y betwee nthe VS A converte r uni t 26 Pconnecto r termina l No . 9 an d
th e PC M connecto r E (26P )
termina l No . 20 .2. Chec k for continuit y betwee nthe VS A converte r uni t 26 Pconnecto r termina l No.1 1 an d
th e PC M connecto r E (26P )
termina l No . 19 .
Are ther e continuity ?
Check th e VS A converte r unit :
1 . Substitut e a known-goo d VS A
converte r unit .
2 . Connec t al l o f disconnec t con -
nectors .
3 . Clea r th e DTC .
4. Test-driv e th e vehicle .5. Verif y th e DTC .
Is DT C 88 indicated ?
Replace th e PCM . VS
A CONVERTE R 26 P CONNECTO R
Wire sid e o f femal e terminal s
PCM CONNECTO R E (26P )
Repai r ope n i n th e wir e betwee n
th e PC M an d th e VS A converte r
unit.
Wire sid e o f femal e terminal s
Replac e th e VS A converte r unit .
Repai
r shor t t o bod y groun d i n
th e wir e betwee n th e PC M an d
the VS A converte r unit .
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DTC 92 : VS A Converte r Uni t
Chec k fo r a n ope n i n th e IG 1 cir -cuit :
1 . Tur n th e ignitio n switc h O N (II) .
2 . Measur e th e voltag e betwee n
th e VS A converte r uni t 26 P
connecto r termina l No . 2 6
an d bod y ground .
I s ther e batter y voltage ?
Chec k fo r a n ope n in th e LG 1 cir -
cuit :
Measur e th e voltag e betwee n th e
VS A converte r uni t 26 P connec -
to r termina l No . 2 6 an d No . 1 .
I s ther e batter y voltage ?
Chec k fo r a n ope n in th e CA N cir -
cuit s (converte r side) :
1 . Tur n th e ignitio n switc h OFF .
2 . Chec k fo r continuit y betwee n
th e VS A contro l uni t 42 P con -
necto r termina l No . 2 4 an d
th e VS A converte r uni t 26 P
connecto r termina l No . 18 .
3 . Chec k fo r continuit y betwee n
th e VS A contro l uni t 42 P con -
necto r termina l No . 4 0 an d
th e VS A converte r uni t 26 P
connecto r termina l No . 19 .
I s ther e continuity ?
Chec k fo r a n ope n in th e CA N cir -
cui t (steerin g angl e senso r side) :
1 . Chec k fo r continuit y betwee n
the VS A contro l uni t 42 P con -necto r termina l No . 2 4 an d
th e steerin g angl e senso r 4 P
connecto r termina l No . 2 .
2 . Chec k fo r continuit y betwee n
th e VS A contro l uni t 42 P con -
necto r termina l No . 4 0 an d
th e steerin g angl e senso r 4 P
connecto r termina l No . 3 .
I s ther e continuity ?
(To pag e 19-256 )
VSA CONVERTE R UNI T 26 P CONNECTO R
Repai r ope n in th e wir e betwee n
th e under-das h fuse/rela y bo x
an d th e VS A converte r unit .
IG1 (BLK/YEL )
Wire sid e o f femal e terminal s
Repai r ope n i n th e wir e
betwee n th e VS A converte r
uni t an d bod y ground .
Repair poo r groun d (G101) .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 contro l uni t an d th e
VS A converte r unit .
STEERIN G ANGL E SENSO R4P CONNECTO R
Repair ope n in th e wir e betwee n
th e VS A contro l uni t an d th e
steerin g angl e sensor . Wir
e sid e o f
femal e terminal s
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