1996 ACURA RL KA9 Service Repair Manual

Troubleshooting
Steering Angl e Senso r (cont'd )
From pag e 19-16 9
Chec k fo r a n ope n i n th e STR- Acircuit:Measur e th e voltag e betwee n th e
TC S contro l uni t 14 P connecto r
termina l No . 1 3 an d bod y groun d
whe n turnin g th e steerin g whee l
slowly.
Is ther e 5 V 0 V?
Chec k fo r a n ope n in th e STR- B 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 . 9 an d bod y groun d
when turnin g th e steerin g whee lslowly .
Is ther e 5 V 0 V? Repai
r ope n in th e wir e betwee n
th e TC S contro l uni t an d steerin g
angl e sensor .
Wire sid e o f femal e terminal s
Repai r ope n in th e wir e betwee n
th e TC S contro l uni t an d steerin gangle sensor .
Erase th e DTC , an d tur n th e steer -
in g whee l slowl y afte r startin g
th e engine . I f TC S indicato r ligh t
come s o n an d DT C 2- 1 is indicated ,
replac e th e TC S contro l unit . TC
S CONTRO L UNI T 14 P CONNECTO R
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TCS Inhibitio n
Diagnosti c Troubl e Cod e (DTC ) 3-1 : TC S Inhibitio n Diagnosi s
TC-INH: PGM-F I TCS , TC S inhibition/permission/failur e signa l
TC-STB : TC S PGM-FI , TC S operatio n star t signa l
TC-FC : TC S PGM-FI , Fue l cu t (torqu e down ) signa l
Th e PC M output s th e TC-IN H signa l t o th e TC S contro l uni t whe n th e PC M receive s th e correc t TC-ST B an d TC-F C sig -
nal s fro m th e TC S contro l unit .
Th e TC S indicato r ligh t goe s of f whe n th e TC S contro l uni t receive s th e TC-IN H signal .
Th e TC-IN H signa l become s lo w (0 V ) whe n th e TC-ST B signa l o r th e TC-F C signa l fails , the n DT C 3- 1 is memorized .
Th e TC-IN H signa l become s lo w (0 V ) whe n PGM-F I DT C 3 , 5 , 6 , 15 , 3 5 o r 3 6 is memorized , the n TC S DT C 3- 1 is memo -
rized.
Is DT C 3 5 o r 3 6 indicated ?
To pag e 19-17 3 whe n th e DT C35 is indicated .To pag e 19-17 5 whe n th e DT C36 is indicated .
NOTE: Perfor m th e PGM-F I trou -bleshootin g whe n a PGM-F I DT Cothe r tha n 3 5 an d 3 6 is indicated .
Perform th e troubleshootin g fo rTC-IN H signa l (t o pag e 19-172 ).
Chec k fo r a PGM-F I DT C (se e sectio n 11 ).
Wit h engin e running , TC Sindicato r ligh t i s ON .With th e SC S servic e connec -tor connecte d (se e pag e19-159 ), DT C 3- 1 is indicated .
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Troubleshooting

TC-INH Signal (No PGM-FI DTC is indicated)

Check for a short to body ground

in the TC-INH circuit:

1. Disconnect the PCM connec-

tor C (12P) and TCS control

unit 14P connectors.

2. Check for continuity between

the PCM connector C (12P) ter-

minal No. 9 and body ground.

Is there continuity?

Check the PCM:

1. Connect the PCM connector C

(12P).

2. Start the engine.

3. Measure the voltage between

the PCM connector C (12P) ter-

minal No. 9 and body ground.

Does the tester needle swing

to about 2.5 V?

Check for an open in the TC-INH

circuit:

Measure the voltage between the

TCS control unit 14P connector

terminal No. 8 and body ground.

Does the tester needle swing

to about 2.5 V?

Check for loose TCS control unit

connectors. If necessary, substi-

tute a known-good TCS control

unit and recheck.
PCM CONNECTOR C (12P)

Repair short to body ground in

the wire between the PCM and

TCS control unit.
Wire side of female terminals

NOTE: Check under the following condi-

tions.

The coolant temperature is above 32°F

(0°C).

The MIL does not come on.

NOTE: Use the 10 V range or a similar

range in an analog tester.

Check for loose PCM connectors.

If necessary, substitute a known-

good PCM and recheck.

NOTE: Check under the following condi-

tions.

The coolant temperature is above 32°F

(0°C).

The MIL does not come on.

NOTE: Use the 10 V range or a similar

range in an analog tester.
TCS CONTROL UNIT UP CONNECTOR

Repair open in the wire between

the PCM and TCS control unit.

Wire side of female terminalsProCarManuals.com