jump start ACURA NSX 1997 Service Repair Manual

Engine Contro l Modul e (ECM )
NOTE: I f thi s sympto m is intermittent , chec k fo r a loos e No . 5 BACK-U P LIGHTS , ALTERNATOR ,
TUR N SIGNAL S (1 5 A ) fus e in th e under-das h fuse/rela y box , a poo r connectio n a t EC M termina l
A7 , o r a n intermitten t ope n in th e BL U wir e betwee n th e EC M (A7 ) an d th e gaug e assembly .
I s th e lo w oi l pressur e ligh t on ?
Tr y t o star t th e engine .
Doe s th e engin e start ?
Chec k fo r a n ope n in th e wir e o r
bulb :
1. Tur n th e ignitio n switc h OFF .2. Connec t th e EC M connecto r
termina l A 7 t o bod y groun d
with a jumpe r wire .3. Tur n th e ignitio n switc h O N (II) .
Is th e MI L on ?
Substitut e a known-goo d ECM ,
an d rechec k (se e pag e 11-3 9 fo r
immobilize r information) . I f symp -
tom/indicatio n goe s away , replac e
the origina l ECM .
— Repai r shor t i n the wir e
betwee n No . 5 BACK-U P
LIGHTS , ALTERNATOR , TUR N
SIGNAL S (1 5 A ) fus e an d
gaug e assembly .
— Replac e No . 5 BACK-U P
LIGHTS , ALTERNATOR , TUR N
SIGNALS (15 A) fuse.
Chec k fo r a n ope n in th e wire s
(PG lines) :1. Tur n th e ignitio n switc h O N (II) .
2 . Measur e voltag e betwee n
bod y groun d an d EC M con -
necto r terminal s A1 2 an d A2 5
individually .
I s ther e les s tha n 1. 0 V ?
Substitut e a known-goo d EC M
an d rechec k (se e pag e 11-3 9 fo r
immobilize r information) . I f symp -
tom/indicatio n goe s away , replac e
th e origina l ECM . Repai
r ope n i n th e wire(s )
betwee n EC M an d G10 1 (locate d
a t intak e manifold ) tha t ha d
mor e tha n 1.0V .
— Repai r ope n i n th e wire s
betwee n EC M (A7 ) an d gaug e
assembly .— Replac e th e MI L bulb .
(cont'd )
Turn th e ignitio n switc h O N (II) .
The Malfunctio n Indicato r Lam p
(MIL ) neve r come s o n (eve n fo r
tw o seconds ) afte r ignitio n i s
turne d O N (II) .
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Transmission Assembl y
Removal
Make sur e lift s ar e place d properly , an d
hois t bracket s ar e attache d t o correc t position s (se e
sectio n 1 ).
1 . Chec k an d recor d th e rea r whee l alignmen t (se e
sectio n 18 ).
2 . Disconnec t th e batter y negativ e (- ) an d positiv e (+ )
cable s fro m th e battery .
3 . Drai n transmissio n oil . Reinstal l th e drai n plu g wit h
a ne w washer .
4 . Remov e th e stru t bar .
5 . Remov e th e ai r cleane r assembly . 6
. Remov e th e connector s fro m th e contro l box , an d
remov e th e contro l box . D o no t remov e th e vacuu m
tube s fro m th e contro l box .
7 . Remov e th e wir e harnes s holder , jumpe r connecto r
an d transmissio n groun d cable .
8 . Disconnec t th e back-u p ligh t switch , neutra l posi -
tio n switch , differentia l spee d sensor , revers e lock -
ou t solenoid , an d vehicl e spee d senso r (VSS ) con -
nectors .
9. Disconnec t th e starte r moto r cables , the n remov e
th e starte r motor .
10 . Remov e th e transmissio n mount .
11 . Remov e th e tw o transmissio n housin g bolts .
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Transmission Assembl y
Installatio n (cont'd )
27. Instal l th e transmissio n moun t an d tw o transmissio n
housin g mountin g bolts .
28 . Instal l th e starte r motor , an d connec t th e starte r
moto r cables . Mak e sur e tha t th e crimpe d sid e o f
th e rin g terminal s facin g ou t (se e sectio n 23 ).
29 . Instal l th e transmissio n groun d cabl e an d jumpe r con -
nector , an d connec t th e back-u p ligh t switch , ne -
utra l positio n switch , differentia l spee d sensor , revers e
lockou t solenoid , an d vehicl e spee d senso r (VSS ) con -
nector .
30 . Instal l th e contro l box , an d connec t th e contro l bo x
connectors .
31. Instal l th e ai r cleane r assembly .
32 . Instal l th e stru t bar .
33 . Refil l th e transmissio n wit h th e recommende d oi l
(se e pag e 13-3 ).
34 . Connec t th e batter y positiv e (+ ) an d negativ e (- )
cable s to th e battery .
35 . Inspec t th e rea r cambe r (se e sectio n 18 ).
36 . Chec k th e clutc h operation .
37 . Shif t th e transmission, and chec k fo r smoot h opera -
tion .
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Solenoid Flushin g
Modulator/Solenoi d Uni t
1. Remov e th e moto r rela y fro m th e under-hoo d
fuse/rela y box . (Location : se e pag e 19-38 )
2 . Instal l th e specia l too l int o th e tw o moto r rela y cavi -
tie s in th e rela y box .
AUXILIAR YWINDOW SWITC H07KAZ-001000 A
5. Connec t th e RE D termina l fro m on e solenoi d con -
necto r t o th e batter y positiv e (+ ) termina l wit h a
remot e starte r switch . Connec t th e BL K termina l
fro m th e sam e solenoi d t o th e batter y negativ e (- )
termina l wit h a jumpe r lea d a s shown .
3 . Disconnec t th e fou r modulato r solenoi d connectors .
4 . Blee d an y high-pressur e flui d fro m th e maintenanc e
bleede r wit h th e specia l tool , the n retighte n th e
bleeder .
BLEEDE R T-WRENC H07HAA-SG0010 1or 07HAA-SG0010 0
6. Pres s th e auxiliar y windo w switc h t o ru n th e pump .
Afte r th e pum p ha s ru n fo r abou t fiv e seconds ,
pres s an d releas e th e remot e starte r switc h thre e o r
fou r time s t o ope n an d clos e th e solenoid . Continu e
runnin g th e pum p fo r abou t 3 0 seconds , the n
releas e th e auxiliar y windo w switc h an d ope n an d
clos e th e solenoi d anothe r thre e o r fou r times .
7 . Repea t step s 4- 6 fo r th e othe r thre e solenoids .
8 . Reconnec t th e solenoid s an d th e pum p relay .
9 . Connec t th e AL B Checke r an d tur n th e Mod e
Selecto r t o "1" . Star t th e engin e an d releas e th e
parkin g brake . Pus h th e Star t Tes t butto n o n th e AL B
Checker .
10. Whil e th e pum p i s running , plac e you r finge r ove r
th e to p o f th e solenoi d retur n tub e i n th e modulato r
reservoi r an d chec k fo r leaks .
I f a solenoi d i s stil l leaking , replac e th e modulator /
solenoi d unit .
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Starting Syste m
Starte r Tes t
NOTE : Th e ai r temperatur e mus t b e betwee n 5 9 an d
100° F (1 5 an d 38°C ) befor e testing .
Recommende d Procedure :
Use a starte r syste m tester .
Connec t an d operat e th e equipmen t i n accor -
danc e wit h manufacturer' s instructions .
Alternat e Procedure :
Us e th e followin g equipment :
— Ammeter , 0 - 40 0 A
— Voltmeter , 0 - 2 0 V (accurat e withi n 0. 1
volt )
— Tachometer , 0 -1,20 0 rp m
Hoo k u p voltmete r an d ammete r a s shown .
NEGATIV E CABL E
POSITIV ECABLE
1. Disconnec t th e No . 1 3 (3 0 A ) fus e fro m th e engin e
compartmen t fuse/rela y box .
No. 1 3 (3 0 A )FUS E
2. Chec k th e starte r engagement :
Depres s th e clutc h peda l al l th e wa y (M/T ) o r shif t
to o r positio n (A/T) , an d tur n th e ignitio n
switc h t o "Star t (III)" . Th e starte r shoul d cran k th e
engine .
NOTE: O n car s equippe d wit h manua l transmis -
sion , th e engin e wil l no t cran k unles s th e clutc h
peda l i s full y depressed .
I f th e starte r stil l doe s no t cran k th e engine ,
chec k th e battery , batter y positiv e cable ,
ground and th e wir e connection s fo r loosenes s
o r corrosion .
Tes t again .
If th e starte r stil l doe s no t cran k th e engine ,
bypas s th e ignitio n switc h circui t a s follows :
Unplu g th e connecto r (BLK/WH T wire ) fro m th e
starter . Connec t a jumpe r wir e fro m th e batter y
positiv e ( + ) termina l t o th e solenoi d terminal .
Th e starte r shoul d cran k th e engine .
SOLENOI D TERMINA L
BLK/WHTWIRE
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Charging System

Troubleshooting (cont'd)

Alternator/Regulator Test

Use the SUN VAT-40 (or equivalent) tester.

LOAD ADJUSTER

(CARBON PILE)
FULL FIELD

LEAD (BLU)

VOLTMETER

NEGATIVE

LEAD (BLK)

INDUCTIVE

PICK-UP

(GRN)
POSITIVE

CABLE (RED)
NEGATIVE

CABLE (BLK)
VOLTMETER

POSITIVE

LEAD (RED)

1. Attach the positive tester cable and the voltmeter

positive lead to the jump start terminal in the

engine compartment fuse/relay box.

POSITIVE CABLE

VOLTMETER

POSITIVE LEAD

JUMP

START

TERMINAL

ENGINE COMPARTMENT

FUSE/RELAY BOX
2. Attach the negative tester cable and the voltmeter

negative lead to the top of the intake manifold.

VOLTMETER

NEGATIVE LEAD
NEGATIVE CABLE

NEGATIVE MARK

3. Attach the inductive pick-up to the B terminal wire

of the alternator with its arrow pointing away from

the terminal.

NOTE: The arrow must point away from the B

terminal.

INDUCTIVE PICK-UP

ARROW
ALTERNATOR

B TERMINAL

ALTERNATORProCarManuals.com

Fuel Gaug e
Gauge Tes t
1. Befor e testing , chec k th e No . 5 (15 A ) fus e i n th e
under-das h fus e box .
2. Remov e th e rea r bulkhea d pane l behin d th e driver' s
seat, the n remov e th e acces s panel .
3 . Disconnec t th e 3 P connecto r fro m th e fue l gaug e
sendin g unit .
ACCES S PANE L
C (YEL/BLU )
A(BLK )
4. Connec t th e voltmete r positiv e prob e t o th e B
(YEL/WHT ) termina l an d th e negativ e prob e t o th e
C (BLK ) terminal , the n tur n th e ignitio n switc h O N
(II) . Ther e shoul d b e betwee n 5 an d 8 V .
I f th e voltag e i s a s specified , g o t o ste p 5 .
I f th e voltag e i s no t a s specified , chec k for :
- A n ope n i n th e YEL , YEL/WH T o r BL K wire .
- Poo r groun d (G403) .
5 . Tur n th e ignitio n switc h OFF . Connec t a jumpe r wir e
betwee n th e B (YEL/WHT ) an d A (BLK ) terminals .
CAUTION : D o no t appl y batter y voltag e t o th e ter -
minals ; i t wil l damag e th e fue l gauge .
6. Tur n th e ignitio n switc h O N (II) . Chec k tha t th e
pointe r o f th e fue l gaug e start s movin g towar d th e
"F " mark .
CAUTION : Tur n th e ignitio n switc h OF F befor e th e
pointe r reache s th e "F" mar k o n th e gaug e dial ; i f
yo u don't , yo u ma y caus e damag e to th e fue l gauge .
I f th e pointe r o f th e fue l gaug e doe s no t mov e a t
all , replac e th e gauge .
I f th e fue l gaug e i s OK , chec k th e sendin g unit .
B (YEL/WHT )
3P CONNECTO R
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Coolant Temperatur e Gaug e
Coolan t Temperatur e Gaug e Tes t
1. Befor e testing , chec k th e No . 5 (1 5 A ) fus e i n th e
under-das h fus e box .
2 . Mak e sur e th e ignitio n switc h i s OFF , the n discon -
nec t th e YEL/GR N wir e fro m th e coolan t tempera -
tur e gaug e sendin g uni t an d groun d i t wit h a
jumpe r wire .
YEL/GR NWIRE
COOLAN T TEMPERATUR ESENDING UNI T
3. Tur n th e ignitio n switc h O N (II) .
Chec k tha t th e pointe r o f th e coolan t temperatur e
gaug e start s movin g towar d th e "H " mark . Tur n th e
ignitio n switc h OF F befor e th e pointe r reache s th e
"H " mar k o n th e gaug e dial ; i f yo u don't , yo u ma y
damag e th e gauge .
I f th e pointe r o f th e gaug e doe s no t swin g a t all ,
chec k for :
— An ope n in th e YE L o r YEL/GR N wire .
— Replac e th e coolan t temperatur e gaug e i f th e
fus e an d wirin g i s OK .
I f th e coolan t temperatur e gaug e is OK , chec k th e
sendin g unit .
Coolan t Temperatur e Gaug e ———
Sendin g Uni t Tes t
1. Disconnec t th e YEL/GR N wir e fro m th e sendin g
unit, an d wit h th e engin e cold , us e a n ohmmete r t o
measur e resistanc e betwee n th e positiv e termina l
an d th e engin e (ground) .
COOLAN T TEMPERATUR EGAUGE SENDIN G UNI T
2. Chec k th e temperatur e o f th e coolant .
3 . Ru n th e engine , an d measur e th e chang e i n resis -
tanc e wit h th e engin e a t operatin g temperatur e
(radiato r fa n come s on) .
Temperatur e
Resistance
133°F (56°C )
["C " mark ]
142
85° F (85°C ) -
212° F (100°C )
49-32
4. I f th e reading s yo u ge t ar e substantiall y differen t
fro m th e specification s above , replac e th e coolan t
temperatur e gaug e sendin g unit .
YEL/GR NWIRE
POSITIV ETERMINA L
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Engine Oi l Pressur e Gaug e
Gauge Tes t
1. Befor e testing , chec k th e No . 5 (15 A ) fus e i n th e
under-das h fus e box .
2 . Mak e sur e th e ignitio n switc h i s OFF , the n discon -
nec t th e 2 P connecto r fro m th e engin e oi l pressur e
sendin g unit , an d groun d i t wit h a jumpe r wire .
BLU/WH T WIR E
ENGIN E OI L PRESSUR E
GAUGE SENDIN G UNI T
3. Tur n th e ignitio n switc h O N (II) .
Chec k tha t th e pointe r o f th e engin e oi l pressur e
gauge start s movin g towar d th e "8 " mark .
CAUTION : Tur n th e ignitio n switc h OF F befor e th e
pointe r reache s th e "8 " mar k o n th e gaug e dial ; i f
yo u don't , yo u ma y cause damag e t o th e gauge .
I f th e pointe r o f th e gaug e doe s no t mov e a t all ,
chec k for :
— A n ope n i n th e YE L o r BLU/WH T wire .
— Replac e th e engin e oi l pressur e gaug e i f th e
wirin g i s OK .
I f th e engin e oi l pressur e gaug e i s OK , g o o n t o
ste p 4 .
4 . Chec k th e engine-oi l pressur e (se e sectio n 8 ).
I f th e engin e oi l pressur e i s OK , replac e th e en -
gin e oi l pressur e sendin g unit .
Engin e Oi l Pressur e
Warning Syste m
Engine Oi l Pressur e Switc h Tes t
1. Rais e th e car , an d plac e safet y stand s i n th e prope r
location s (se e sectio n 1 ).
2 . Remov e th e righ t rea r tire .
3 . Remov e th e YEL/RE D wir e fro m th e engin e oi l pres -
sur e switch .
ENGINE OI L PRESSUR E SWITC H
4. Chec k continuit y betwee n th e positiv e termina l an d
engin e (ground ) wit h th e engin e off .
I f ther e i s n o continuity , th e switc h i s OK .
If ther e is continuity , d o no t replac e th e switch ;
first chec k othe r possible causes i n ste p 6 .
6. Mak e sur e engin e oi l leve l i s OK , the n chec k engin e
oil pressur e (se e sectio n 8 ).
If engin e oi l pressur e is OK , replac e th e engin e oi l
pressur e switch .
If oi l pressur e i s low , remove , inspect , and , i f
necessary , replac e th e oi l pum p (se e sectio n 8 ).
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