1996 ACURA RL KA9 light

Diagnostic Trouble Code (DTC)

DTC Erasure

1. Press the parking brake pedal.

2. Push and hold the TCS switch, then turn the ignition switch ON (II).

3. Hold the TCS switch pushed for 4 to 6 seconds, then release the TCS switch.

4. After 3 seconds, the TCS indicator light should go off and blink 2 times, then stay on. This means that the DTC is

erased.

NOTE:

Always follow these steps exactly. If you connect the SCS service connector and/or release the parking brake pedal dur-

ing these steps, the DTC will not be erased.

If the TCS indicator light blinks repeatedly, replace the TCS control unit.

Standard Indication Pattern

Abnormal Indication Pattern

Light blinks repeatedlyProCarManuals.com

Troubleshooting
TCS Indicato r Ligh t Doe s No t Com e O n
Th e TC S indicato r ligh t doe s no t com e o n whe n ignitio n switc h i s turne d O N (II) .
The TC S indicato r ligh t doe s no t
com e o n whe n ignitio n switc h is
turne d O N (II) .
Chec k th e METE R (1 5 A ) fus e in th e
under-hoo d fuse/rela y bo x an d
METE R (7. 5 A ) fus e i n th e under -
das h fuse/rela y box .
Ar e th e fuse s OK ?
Chec k fo r a n ope n in th e IG 1 cir -
cuit :
1 . Disconnec t th e gaug e assem -
bl y 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 gaug e assembl y 22 P con -
necto r termina l No . 2 2 an d
body ground .
Is ther e batter y voltage ?
Is th e bul b OK ?
Chec k th e gaug e assembly :
1 . Connec t th e gaug e assembl y
22 P connector .
2 . Connec t th e gaug e assembl y
22 P connecto r termina l No . 7
t o bod y groun d wit h a jumpe r
wire .
Doe s th e TC S indicato r ligh t
com e on ?
T o pag e 19-16 3 NOTE
: Al l indicato r light s excep t th e chargin g
system indicato r ligh t wil l no t com e o n whe none o f thes e fuse s i s blown .
Replac e th e fuse(s ) an d recheck .
NOTE : Reinstal l th e fuse s if the y ar e OK . GAUG
E ASSEMBL Y 22 P CONNECTO R
Repai r ope n in th e wir e betwee n
th e METE R (1 5 A ) fus e i n th e
under-hoo d fuse/rela y bo x an d
gaug e assembly .
Repai r ope n in th e wir e betwee n
th e METE R (7. 5 A ) fus e i n th e
under-das h fuse/rela y bo x an d
bod y ground .
Mete r rela y stuc k OFF .
Replac e th e under-hoo d fuse /
relay bo x o r under-das h fuse /relay box .
(Ope n circui t insid e th e fuse /
rela y box ) Wir
e sid e o f femal e terminal s
Replac e th e TC S indicato r ligh t
bulb.
JUMPE R WIR E
Replac e th e printe d circui t boar d
i n th e gaug e assembly .
Chec
k th e TC S indicato r ligh t bul b
i n th e gaug e assembly .
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From pag e 19-16 6
Chec k th e brak e flui d leve l switch :
Disconnec t th e brak e flui d leve lswitch connectors .
Doe s th e brak e syste m ligh t g o off ? Replac
e th e brak e flui d leve l
switch . (Switc h stuc k ON )
Chec k th e parkin g brak e switc h
(se e pag e 19-8) .
Is th e switc h OK ?Replac e th e parkin g brak e switch .
(Switc h stuc k ON )
Chec k fo r a shor t t o bod y groun d
i n th e PAR K circuit :
Disconnec t th e TC S contro l uni tconnector .
Doe s th e brak e syste m ligh t
g o off ? Replac
e th e TC S contro l unit .
(Shor t t o bod y groun d insid e th e
unit )
Repai r shor t t o bod y groun d i n
th e wir e betwee n th e brak e sys -
te m light , parkin g brak e switc h
an d brak e flui d leve l switch .
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PGM-FI DTC : 3 5 (TC-ST B signa l doe s no t matc h TC-F C signal )
Check fo r a shor t t o bod y groun d
i n th e TC-ST B circuit :
1 . Disconnec t th e PC M connec -
to r C (12P ) an d TC S contro l
uni t 14 P connectors .
2 . Chec k fo r continuit y betwee n
th e TC S contro l uni t U P con -
necto r termina l No . 1 0 an d
bod y ground . TC
S CONTRO L UNI T 14 P CONNECTO R
Wir e sid e o f femal e terminal s
I s ther e continuity ? Repai
r shor t t o bod y groun d in
th e wir e betwee n th e PC M an d
TC S contro l unit .
TCS CONTRO L UNI T 20 P CONNECTO R
Chec k fo r a shor t t o bod y groun d
i n th e TC-F C circuit :
1 . Disconnec t th e TC S contro l
uni t 20 P connector .
2 . Chec k fo r continuit y betwee n
termina l No . 1 4 an d bod y
ground .
Is ther e continuity ?Repair shor t t o bod y groun d in
th e wir e betwee n th e PC M an d
TC S contro l unit . Wir
e sid e o f femal e terminal s
Chec k th e TC S contro l uni t (TC -
STB) :1. Connec t th e TC S contro l uni t
14 P an d 20 P connector s an d
PC M connecto r C (12P) .
2 . Rais e th e fron t o f th e vehicle ,
and suppor t i t wit h safet ystands.
3 . Star t th e engine .
4 . Measur e th e voltag e betwee n
th e TC S contro l uni t 14 P con -
necto r termina l No . 1 0 an d
bod y ground . TC
S CONTRO L UNI T U P CONNECTO R
Wir e sid e o f femal e terminal s
I s th e voltag e a s specified ?
TCS is functioning :about 0 V
TC S is no t functioning :
abou t 5 V Chec
k fo r loos e TC S contro l uni t
connectors . I f necessary , substi -
tut e a known-goo d TC S contro l
uni t an d recheck .
To pag e 19-17 4
NOTE : Sto p th e wheel s b y depressin g
th e brak e peda l lightly .
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Troubleshooting
PGM-FI DTC : 3 5 (TC-ST B signa l doe s no t matc h TC-F C signal ) (cont'd )
From pag e 19-17 3
Chec k th e TC S contro l uni t (TC -
FC):Measur e th e voltag e betwee n th eTC S contro l uni t 20 P connecto rterminal No . 1 4 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 .
TCS IS NO T TC S ISFUNCTIONIN G FUNCTIONIN G
TCS CONTRO L UNI T 20 P CONNECTO R
Check fo r loos e TC S contro l uni tconnectors . I f necessary , substi -tute a known-goo d TC S contro l
uni t an d recheck .
NOTE : Sto p th e wheel s b y depressin g
th e brak e peda l lightly .
Check fo r a n ope n i n th e TC-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 .
Wire sid e o f femal e terminal s
PC M CONNECTO R C (12P )
I s ther e abou t 5 V whe n TC S is
no t functioning ? Repai
r ope n in th e wir e betwee n
th e TC S contro l uni t an d PCM . Wir
e sid e o f femal e terminal s
Check fo r a n ope n i n th e TC-F Ccircuit :
Measur e th e voltag e betwee n th e
PC M connecto r C (12P ) termina lNo. 1 0 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 .
TCS IS NO T TC S ISFUNCTIONIN G FUNCTIONIN G
I s ther e abou t 4. 5 V whe n TC S is
no t functioning ? Repai
r ope n in th e wir e betwee n
th e TC S contro l uni t an d PCM .
Chec k fo r loos e PC M connectors .
I f necessary , substitut e a known -
goo d PC M an d recheck .
TC
S is functionin g (maximum) :
abou t 1.5 V
TC S is no t functioning :
abou t 4. 5 V
I
s th e voltag e a s specified ?
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Troubleshooting
Barometric Pressur e (BARO ) Signa l
Diagnosti c Troubl e Cod e (DTC ) 3-5 : Barometri c Pressur e (BARO ) Signa l Diagnosi s
With engin e running , TC S indi -cato r ligh t i s ON .MIL is OFF .With th e SC S servic e connec -
to r connecte d (se e pag e
19-159 ), DT C 3- 5 is indicated .
Chec k fo r a shor t t o bod y groun d
i n th e BAR O circuit :
1 . Disconnec t th e PC M connecto r
D (22P ) an d TC S contro l uni t20P connectors .2. Chec k fo r continuit y betwee n
th e PC M connecto r D (22P ) ter -
mina l No . 3 an d bod y ground .
I s ther e continuity ?
Chec k th e BAR O circui t insid e
the PCM :1. Connec t th e PC M connecto rD (22P) .2. Tur n th e ignitio n switc h O N (II) .3. Measur e th e voltag e betwee n
th e PC M connecto r D (22P ) ter -
mina l No . 3 an d bod y ground .
I s ther e abou t 3 V ?
Chec k fo r a n ope n i n th e BAR Ocircuit :Measur e th e voltag e betwee n th eTC S contro l uni t 20 P connecto rterminal No . 1 3 an d bod y ground .
I s ther e abou t 3 V ?
Th e syste m is O K at thi s time .If th e proble m recurs , replac e
th e TC S contro l unit . NOTE
: Whe n bot h th e TC S indicato r
light an d th e MI L ar e ON , troubleshoo tthe PGM-F I syste m first .
PCM CONNECTO R D (22P )
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 PC M an d
TC S contro l unit .
Chec k fo r loos e PC M connectors .If necessary , substitut e a known -good PC M an d recheck .
TCS CONTRO L UNI T 20 P CONNECTO R
Repai r ope n in th e wir e betwee n
th e PC M an d TC S contro l unit . Wir
e sid e o f femal e terminal s
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Throttle Positio n Senso r (TPS ) Signa l
Diagnosti c Troubl e Cod e (DTC ) 3-6 : Throttl e Positio n Senso r (TPS ) Signa l Diagnosi s
With engin e running , TC S
indicato r ligh t i s ON .
MIL is OFF .With th e SC S servic e connec -
to r connecte d (se e pag e
19-159 ), DT C 3- 6 is indicated .NOTE
: Whe n bot h th e TC S indicato rlight an d th e MI L ar e ON , trouble -shoot th e PGM-F I syste m first .
TCS CONTRO L UNI T 14 P CONNECTO R
Check fo r a n ope n i n th e TP S cir -cuit :Measur e th e voltag e betwee n th e
TC S contro l uni t 14 P connecto r
termina l No . 1 4 an d bod y ground .
I s th e voltag e a s specified ?
Full y closed : abou t 0. 5 V
Full y open : abou t 4. 5 V Repai
r ope n in th e wir e betwee n
th e PC M an d TC S contro l unit . Wir
e sid e o f femal e terminal s
Th e syste m is O K at thi s time .
I f th e proble m recurs , replac e
th e TC S contro l unit .
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Troubleshooting
TCS Contro l Valv e ( TCV ) Senso r Signa l
Diagnosti c Troubl e Cod e (DTC ) 3-7 : TC S Contro l Valv e ( TCV ) Senso r Signa l Diagnosi s
With engin e running , TC S
indicato r ligh t i s ON .
MIL is OFF .With th e SC S servic e connec -
to r connecte d (se e pag e
19-159 ), DT C 3- 7 is indicated .
Chec k fo r a n ope n i n th e VCC 2
circuit :
1 . Disconnec t th e TC S contro l
valv e senso r connector .
2 . Tur n th e ignitio n switc h O N (II) .
3 . Measur e th e voltag e betwee n
termina l No . 3 an d bod yground .
Is ther e abou t 5V ?
Chec k fo r a n ope n in th e SG 2 cir -
cuit :
Measur e th e voltag e betwee n th e
TC S control valve senso r connec -
tor termina l No . 1 an d No . 3 .
Is ther e abou t B V ?
Chec k fo r a shor t t o bod y groun d
in th e TC V circuit :
1 . Tur n th e ignitio n switc h OFF .
2 . Disconnec t th e TC S contro l
unit 14 P connector .3. Tur n th e ignitio n switc h O N (II) .4. Chec k fo r continuit y betwee nthe TC S contro l valv e sensor
connecto r termina l No . 2 an d
bod y ground . NOTE
: Whe n bot h th e TC S indicato r
light an d th e MI L ar e ON , troubleshoo tthe PGM-F I syste m first .
TCS CONTRO L VALV ESENSO R CONNECTO R
Repair ope n i n th e wir e betwee n
th e PC M an d TC S contro l valv e
sensor .
Wire sid e o f femal e terminal s
Repai r ope n in th e wir e betwee n
th e PC M an d TC S contro l valv e
sensor .
Is ther e continuity ?
T o pag e 19-18 1 Repai
r shor t t o bod y groun d i n
th e wir e betwee n th e TC S contro l
uni t an d TC S contro l valv e sensor .
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