ACURA NSX 1997 Service Repair Manual

Safety Indicato r
Troubleshootin g
NOTE: Th e number s i n th e tabl e sho w th e troubleshootin g sequence .
e p ag )
8
0
( s e e
2 3 -1
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Brake Ligh t Failur e Senso r Tes t
1. Firs t mak e sur e th e brak e light s com e o n whe n th e
brak e peda l i s pressed .
I f al l th e brak e light s com e on , g o t o ste p 2 .
I f on e o f th e brak e light s doe s no t com e on , chec k
whethe r th e bul b i s blown . I f th e bul b i s OK , g o
t o ste p 2 .
I f non e o f th e brak e light s com e on , chec k th e
brak e ligh t circui t.
2 . Ope n th e trun k lid , an d remov e th e tri m pane l tha t
cover s th e righ t taillight . Watc h th e
ligh t i n th e safet y indicato r whe n th e A (WHT/GRN )
wir e o f th e 6 P connecto r i s grounde d an d th e igni -
tio n switc h is turne d fro m OF F to O N (II) .
RIGH T FAILUR E SENSO R
6 P CONNECTO R
Vie w fro m wir e sid e LEF
T FAILUR E SENSO R
6 P CONNECTO R
View fro m wir e sid e
If th e ligh t come s o n an d stay s
on, ther e is a n ope n in th e A (GRN ) wir e betwee n
th e lef t failur e senso r an d th e righ t failur e sensor .
If th e ligh t doe s no t sta y on , g o
t o ste p 5 .
5. Watc h th e ligh t a s yo u tur n th e igni -
tio n switc h fro m OF F to O N (II ) wit h th e B (BLK ) wir e
o f th e 6 P connecto r grounde d an d th e brak e peda l
pressed .
If th e ligh t come s o n an d stay s
on , replac e th e lef t failur e sensor .
If th e ligh t doe s no t sta y on , chec k
fo r a n ope n in th e B (BLK ) wir e betwee n th e lef t
failur e senso r an d ground , an d chec k fo r a poo r
groun d a t G551 .
If th e ligh t come s o n an d stay s
on , chec k fo r a n ope n in th e A (WHT/GRN ) wir e
betwee n th e safet y indicato r an d th e righ t failur e
sensor .
If th e ligh t doe s no t sta y on , g o
to ste p 3 .
3. Watc h th e ligh t a s yo u tur n th e igni -
tio n switc h fro m OF F t o O N (II ) wit h th e B (GRN )
wir e o f th e 6 P connecto r grounde d an d th e brak e
peda l pressed .
If th e ligh t come s o n an d stay s
on , replac e th e righ t failur e sensor .
If th e ligh t doe s no t sta y on , g o t o
ste p 4 . 4
. Remov e th e rea r tri m pane l tha t cover s th e lef t tail -
light . Watc h th e ligh t a s yo u tur n th e
ignitio n switc h fro m OF F to O N (II ) wit h th e A (GRN )
wir e o f th e 6 P connecto r grounde d an d th e brak e
pedal pressed .
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Safety Indicato r (NSX- T "ope n top" )
Roof Loc k Switc h Tes t
1. Remov e th e headline r (se e sectio n 20 ).
2 . Disconnec t th e 3 P connecto r fro m th e roo f loc k
switch .
ROOF LOC KSWITC H
View fro mwire sid e
3. Ther e shoul d b e continuit y betwee n th e A an d B ter -
minal s wit h th e switc h release d (roo f unlatche d o r
off) .
4. Ther e shoul d b e n o continuit y wit h th e switc h
pushe d (roo f latched) .
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Roof Holder Switch Test

1. Open the rear hatch and engine cover.

2. Disconnect the 1P connector from the roof holder

switch.

3. There should be continuity between the A and B ter-

minals with the switch released (roof not stored).

4. There should be no continuity with the switch

pushed (roof stored).

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A/T Gea r Positio n Indicato r
Componen t Locatio n Inde x
SRS component s ar e locate d i n thi s area . Revie w th e
SR S componen t locations , precautions , an d procedure s
i n th e SR S ( sectio n 24 ) befor e performin g repair s o r ser -
vice .
NOTE : Fo r indicato r troubleshooting , refe r t o
sectio n 14 .
A/T GEAR POSITIO N
INDICATO R
Inpu t Test , pag e 23-16 0
TRANSMISSIO N
CONTRO L MODUL E (TCM )
See Automati c Transmissio nsection 1 4
A/ T GEA R POSITIO N
SWITC H
Test , pag e 23-16 2
Replacement , pag e 23-16 3
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A/T Gea r Positio n Indicato r
Indicator Inpu t Tes t
SRS component s ar e locate d i n thi s area . Revie w th e
SR S componen t locations , precautions , an d procedure s
i n th e SR S ( sectio n 24 ) befor e performin g repair s o r ser -
vice .
Remov e th e dashboar d lowe r cover , dashboar d lowe r
pa d an d instrumen t panel . Disconnec t th e connecto r
"A " (30P ) fro m th e gaug e assembl y (se e pag e 23-127 ).
Inspec t th e connecto r an d socke t terminal s t o b e sur e
the y ar e al l makin g goo d contact .
I f th e terminal s ar e bent , loose , o r corroded , repai r
the m a s necessary , an d rechec k th e system .
I f th e terminal s loo k OK , mak e th e followin g input
test s a t th e connector .
— If a tes t indicate s a problem , fin d an d correc t th e
cause , the n rechec k th e system .
— If al l th e inpu t test s prov e OK , th e contro l uni t
mus t b e faulty ; replac e it .
CONNECTOR"B "
CONNECTO R "A "
(30P )
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WireTes t conditio n
Test: Desire d resul t
Possible caus e if resul t i s no t obtaine d
BLK
YE L
GRY/WH T
LTBLU
GRN
BRN/BL K
GRN/YE L
LT GRN /
WHT
RED/BL K
and RED2
YEL/BL K
RED1
Under al l condition s
Ignitio n switc h O N (II )
Shif t leve r i n positio n
NOTE : Don' t pus h th e
brak e pedal .
Shift leve r i n positio n
Shift leve r i n positio n
Shif t leve r i n positio n
Shift leve r i n positio n
Shift leve r i n positio n
Combinatio n ligh t
switc h O N an d das h
light s brightnes s contro l
dia l o n ful l brigh t
Ignitio n switc h O N (II )
an d shif t leve r i n an y
positio n excep t
Ignitio n switc h O N (II ) Chec
k fo r continuit y t o ground :
Ther e shoul d b e continuity .
Chec k fo r voltag e to ground :
Ther e shoul d b e batter y voltage .
Chec k fo r continuit y t o ground :
Ther e shoul d b e continuity .
Ther e shoul d b e n o continuit y i n an y
othe r position .
Chec k fo r voltag e betwee n th e
RED/BL K an d RED2 terminals :
There shoul d b e batter y voltage .
Chec k fo r voltag e to ground :
Ther e shoul d b e batter y voltag e fo r
tw o second s afte r th e ignitio n switc h
i s turne d O N (II) , an d les s tha n 1 V
tw o second s later .
Chec k fo r voltag e t o ground :
Ther e shoul d b e mor e tha n 11V .
• Poo r groun d (G401 , G402 , G403 )
• A n ope n i n th e wir e
• Blow n No . 5 (1 5 A ) fus e
• A n ope n i n th e wir e
• Fault y A/ T gea r positio n switc h
• Poo r groun d (G401 , G402 , G403 )
• A n ope n i n th e wir e
• Fault y das h light s brightnes s
contro l syste m
• A n ope n i n th e wir e
• Fault y switc h
• Fault y A/ T gea r positio n switc h
• Fault y transmissio n contro l
modul e (TCM )
• A n ope n i n th e wir e
• Fault y EC M an d transmissio n
control modul e (TCM )
• A n ope n i n th e wir e
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A/T Gea r Positio n Indicato r
A/T Gea r Positio n Switc h Tes t
SRS component s ar e locate d i n thi s area . Revie w th e
SR S componen t locations , precautions , an d procedure s
i n th e SR S ( sectio n 24 ) befor e performin g repair s o r ser -
vice .
1. Remov e th e cente r consol e pane l an d dushboar d
(se e sectio n 20 ).
2 . Disconnec t th e 12 P an d 2 P connector s fro m th e A/ T
gea r positio n switch .
3 . Chec k fo r continuit y betwee n th e terminal s i n eac h
switc h positio n accordin g t o th e table .
Mov e th e leve r bac k an d fort h a t eac h switc h
position withou t touchin g th e pus h button , an d
chec k fo r continuit y withi n th e rang e o f fre e play .
I f ther e i s n o continuit y withi n th e rang e o f fre e
play , adjus t th e positio n o f th e switc h a s describe d
below .
A/T GEA R POSITIO N SWITC H
View fro m wir e sid e
Adjustment :
1. Shif t t o position , an d loose n th e bolts .
2. Slid e th e switc h i n th e directio n o f positio n [with -
in 2. 0 m m (0.0 8 in) ] unti l ther e is continuit y betwee n
No. 8 an d No . 1 1 terminal s i n th e rang e o f fre e pla y
o f th e shif t lever .
3 . Rechec k fo r continuit y betwee n eac h o f th e termi -
nals.
NOTE :
If adjustmen t i s no t possible , chec k fo r damag e
t o th e shif t leve r deten t and/o r bracket . I f ther e i s
n o damage , replac e th e A/ T gea r positio n switch .
Yo u shoul d b e abl e t o star t th e engin e wit h th e
shif t leve r i n positio n , withi n th e rang e o f fre e
play .
Positio n P
LOCK PI N
BOLT S
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A/T Gea r Positio n Switc h
Replacemen t
SRS component s ar e locate d i n thi s area . Revie w th e
SR S componen t locations , precautions , an d procedure s
i n th e SR S sectio n 24 befor e performin g repair s o r ser -
vice .
1 . Remov e th e cente r consol e pane l an d dashboar d
(se e sectio n 20 ).
2 . Disconnec t th e 12 P an d 2 P connector s fro m th e A/ T
gea r positio n switch .
SWITCH SLIDE R (I n |
A/ T GEA R POSITIO N SWITC H
3. Remov e th e tw o positio n switc h mountin g bolts .
4. Positio n th e slide r o n th e ne w switc h t o a s show n
above .
5. Shif t th e shif t leve r t o , the n sli p th e switc h int o
position .
6 . Attac h th e switc h wit h th e tw o bolts .
7. Tes t th e switc h i n th e an d positions . Yo u
shoul d b e abl e t o star t th e engin e wit h th e shif t
lever i n positio n anywher e i n th e rang e o f fre e
play .
8 . Connect the 12 P an d 2 P connectors , clam p th e har -
ness , an d instal l th e dashboar d an d cente r consol e
panel .
Bulb Replacemen t
SRS component s ar e locate d i n thi s area . Revie w th e
SR S componen t locations , precautions , an d procedure s
i n th e SR S sectio n 24 befor e performin g repair s o r ser -
vice .
1 . Remov e th e gaug e assembl y (se e pag e 23-126 ).
2 . Disassembl e th e gaug e assembl y (se e pag e 23-129 ).
3 . Remov e th e bul b fro m printe d circui t boar d B .
PRINTE D CIRCUI T
BOAR D B
BUL B (1.1 2 W )
4. Instal l th e indicato r i n th e revers e orde r o f removal .
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Integrated Contro l Uni t
Inpu t Tes t
SRS component s ar e locate d i n thi s area . Revie w th e
SR S componen t locations , precautions , an d procedure s
i n th e SR S sectio n 24 befor e performin g repair s o r ser -
vice .
Remov e th e lef t kic k pane l cover , an d th e rela y holde r
fro m it s bracket , the n disconnec t th e 16- P connecto r
fro m th e integrate d contro l unit . Remov e th e integrate d
contro l uni t fro m th e under-das h fus e box .
Inspec t th e connecto r an d socke t terminal s t o b e sur e
the y ar e al l makin g goo d contact .
I f th e terminal s ar e bent , loose , o r corroded , repai r
the m as necessary , an d rechec k th e system .
I f th e terminal s loo k OK , mak e th e followin g inpu t
test s a t th e connector .
— If an y tes t indicate s a problem , fin d an d correc t th e
cause , the n rechec k th e system .
— If al l th e inpu t test s prov e OK , th e contro l uni t
mus t b e faulty ; replac e it .
NOTE : Differen t wire s wit h th e sam e colo r hav e
bee n give n a numbe r suffi x t o distinguis h the m (fo r
example , YEL1 an d YEL2 ar e no t th e same) .INTEGRATE D
CONTRO L UNI T
16P CONNECTO R
UNDER-DAS H FUS E BO X
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