1997 ACURA NSX OBD port

Troubleshooting Procedure s
Checking th e Diagnosti c Troubl e Cod e (DTC )
wit h a n OB D II Sca n Too l o r th e Hond a PG M Teste r
When th e TC M sense s a n abnormalit y i n th e inpu t o r outpu t systems , th e indicato r ligh t i n th e gaug e assembl y wil l
blink . Whe n th e 16 P Dat a Lin k Connecto r (DLC ) (locate d t o th e lowe r lef t o f th e glov e compartment ) i s connecte d t o th e
OB D II Sca n Too l o r Hond a PG M Teste r a s shown , th e sca n too l o r teste r wil l indicat e th e Diagnosti c Troubl e Cod e (DTC )
whe n th e ignitio n switc h i s turne d O N (II) .
Whe n th e indicato r ligh t ha s bee n reporte d on , connec t th e OB D II Sca n Too l conformin g t o SA E J197 8 o r Hond a PG M
Teste r t o th e DL C (16P ) a t th e lowe r lef t o f th e glov e compartment . Tur n th e ignitio n switc h O N (II) , an d observ e th e DT C
o n th e scree n o f th e OB D II Sca n Too l o r Hond a PG M Tester . Afte r determinin g th e DTC , refe r t o th e electrica l syste m
Symptom-to-Componen t Char t o n page s 14- 8 an d 14-9 .
NOTE : Se e th e OB D II Sca n Too l o r Hond a PG M Teste r user' s manua l fo r specifi c instructions .
OBD II SCA N TOO L o r
HOND A PG M TESTE R
DATA LIN K CONNECTO R (16P )
Some PGM-F I problem s wil l als o mak e th e indicato r ligh t com e on . Afte r repairin g th e PGM-F I system , disconnec t th e
CLOC K fus e (7. 5 A ) i n th e under-hoo d fuse/rela y bo x fo r mor e tha n 1 0 second s t o rese t th e TC M memory , the n recheck .
NOTE : Disconnectin g th e CLOC K fus e als o cancel s th e radi o prese t station s an d th e cloc k setting . Mak e not e o f th e radi o
preset s befor e removin g th e fus e s o yo u ca n rese t them .
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Troubleshooting
Troubleshooting Procedure s
I. Ho w T o Begi n Troubleshootin g
Whe n th e Malfunctio n Indicato r Lam p (MIL ) ha s bee n reporte d on , o r ther e i s a driveabilit y problem , us e th e appropri -
at e procedur e belo w to diagnose and repai r th e problem .
MALFUNCTIO NINDICATORLAMP(MIL)
A. Whe n th e MI L ha s com e on :
1 . Connec t th e Hond a PG M Teste r o r a n OB D II
sca n too l t o th e 16 P Dat a Lin k Connecto r (DLC )
locate d unde r th e glov e bo x behin d a removabl e
cover .
2. Tur n th e ignitio n switc h O N (II) .
3. Chec k th e DT C an d not e it . Als o chec k an d not e
th e freez e fram e data . Refe r t o th e Diagnosti c
Troubl e Cod e Char t an d begi n troubleshooting .
NOTE:
See th e OB D I I sca n too l o r Hond a PG M
Teste r user' s manual s fo r specifi c operatin g
instructions .
Th e sca n too l o r teste r ca n rea d th e Diagnosti c Troubl e Code s (DTC) , freez e fram e data , curren t data , an d othe r
Engin e Contro l Modul e (ECM ) data .
Freez e fram e dat a indicate s th e engin e condition s whe n th e firs t malfunction , misfir e o r fue l tri m malfunctio n
was detected . I t ca n b e usefu l informatio n whe n troubleshooting .
B . Whe n th e MI L ha s no t com e on , bu t ther e i s a driveabilit y problem , refe r t o th e Sympto m Char t o n pag e 11-42 .
C . DTC s wil l b e indicate d b y th e blinkin g o f th e Malfunctio n Indicato r Lam p (MIL ) wit h th e SC S servic e connecto r con -
nected .
Connec t th e SC S servic e connecto r t o Servic e Chec k Connecto r a s shown . (Th e 2 P Servic e Chec k Connecto r i s
locate d unde r th e das h o n th e passenger' s sid e o f th e vehicle. ) Tur n th e ignitio n switc h o n (II) .
DAT A LIN K CONNECTO R (16P )SERVIC E CHEC KCONNECTO R (2P )
OBD II SCA N TOO L o r
HOND A PG M TESTE RSCS SERVIC E CONNECTO R07PAZ-001010 0
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Idle Spee d Settin g
Inspection/Adjustmen t
NOTE : Befor e settin g th e idl e speed , chec k th e thes e
items :
Th e MI L ha s no t bee n reporte d on .
Ignitio n timin g
Spark plug s
Air cleane r
PCV syste m
1 . Star t th e engine . Hol d th e engin e a t 3,00 0 rp m wit h
no loa d (A/ T in o r position , M/ T in neutral ) unti l
th e radiato r fa n come s on , the n tur n th e ignitio n
switch OFF .
2. Connec t th e SC S servic e connecto r t o servic e chec k
connector .
3. Connec t a OBDI I sca n too l (se e pag e 11-38 ) o r
tachometer .
Connec t a tachomete r t o loo p o f ignite r uni t sec -
ondary , or.. .
TACHOMETE R
TACHOMETE R
CONNECTOR
4. Restar t th e engine .
5 . Chec k idlin g i n no-loa d condition s i n whic h th e
headlights , blowe r fan , rea r defogger , coolin g fan ,
an d ai r conditione r ar e no t operating . D o no t
depres s th e accelerato r pedal .
Idl e spee d shoul d be :
Adjus t th e idl e speed , i f necessary , b y turnin g th e
idl e adjustin g screw . Afte r adjustin g th e idl e speed ,
chec k th e ignitio n timin g (se e sectio n 23 ). I f i t i s ou t
o f spec , g o bac k t o ste p 4 .
IDL E ADJUSTIN GSCREW
6. Disconnec t th e SC S servic e connector .
7 . Depres s th e accelerato r peda l an d stabiliz e th e
engin e spee d a t 1,00 0 rpm , the n slowl y releas e th e
peda l unti l th e engin e idles , the n chec k th e idl e
speed .
Idle spee d shoul d be :
Remov e th e rubbe r ca p fro m th e tachomete r
connecto r an d connec t a tachometer .
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Checking th e Diagnosti c Troubl e Cod e (DTC )
wit h a n OBDI I Sca n Too l o r th e Hond a PG M Teste r
When th e TC M sense s a n abnormalit y i n th e inpu t o r outpu t systems , th e indicato r ligh t i n th e gaug e assembl y wil l
blink . Whe n th e 16 P Dat a Lin k Connecto r (DLC ) (locate d t o th e lowe r lef t o f th e glov e compartment ) i s connecte d t o th e
OB D II Sca n Too l o r Hond a PG M Teste r a s shown , th e sca n too l o r teste r wil l indicat e th e Diagnosti c Troubl e Cod e (DTC )
when th e ignitio n switc h is turne d O N (II) .
Whe n th e indicato r ligh t ha s bee n reporte d on , connec t th e OB D II Sca n Too l conformin g t o SA E J197 8 o r Hond a PG M
Teste r t o th e DL C (16P ) a t th e lowe r lef t o f th e glov e compartment . Tur n th e ignitio n switc h O N (II) , an d observ e th e DT C
o n th e scree n o f th e OB D II Sca n Too l o r Hond a PG M Tester . Afte r determinin g th e DTC , refe r t o th e electrica l syste m
Symptom-to-Componen t Char t o n page s 14-8a and 14-9a .
NOTE : Se e th e OB D II Sca n Too l o r Hond a PG M Teste r user' s manua l fo r specifi c instructions .
Troubleshootin g Procedure s
Some PGM-F I problem s wil l als o mak e th e indicato r ligh t com e on . Afte r repairin g th e PGM-F I system , disconnec t th e
CLOC K fus e (7. 5 A ) i n th e under-hoo d fuse/rela y bo x fo r mor e tha n 1 0 second s t o rese t th e TC M memory , the n recheck .
NOTE : Disconnectin g th e CLOC K fus e als o cancel s th e radi o prese t station s an d th e cloc k setting . Mak e not e o f th e radi o
preset s befor e removin g th e fus e s o yo u ca n rese t them .
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