ACURA NSX 1997 Service Repair Manual

6. Remove the eight screws, then remove the steering

column covers.

UPPER COVER

X

LOWER COVER

7. Disconnect the 30P connectors from both sides of

the gauge assembly.

30P CONNECTORS
8. Lay a protective cloth on the combination switches

to prevent scratching the gauge assembly. Remove

the four screws, then take out the gauge assembly

as shown.

GAUGE

ASSEMBLY

PROTECTIVE CLOTHProCarManuals.com

Gauge Assembly

Bulb Locations

GAUGE LIGHTS (1.4 Wx 2)

SRS INDICATOR LIGHT (1.4 W)

RIGHT TURN SIGNAL INDICATOR LIGHT 11.4 W)

EPS INDICATOR LIGHT (1.4 W)

BRAKE SYSTEM LIGHT (1.4 W)

SEAT BELT REMINDER LIGHT (1.4 W)

IMMOBILIZER INDICATOR

LIGHT (1.4 W)

LOW FUEL INDICATOR

LIGHT (1.4 W)

GAUGE LIGHT

(1.4
W)
TCS INDICATOR LIGHT (1.96 W)

LEFT TURN SIGNAL INDICATOR LIGHT (1.4 W)

ABS

INDICATOR LIGHT (1.4 W)

CHARGING SYSTEM LIGHT (1.4 W)

MALFUNCTION

INDICATOR

LAMP (MIL)

(1.4
W)

CRUISE INDICATOR LIGHT

(1.96
W)
LOW OIL PRESSURE

INDICATOR

LIGHT (1.4 W)

GAUGE LIGHT

.4W)

GAUGE LIGHT

(3.0
W)
GAUGE LIGHT

GAUGE LIGHT HIGH BEAM INDICATOR (3.0 W)

(3.0 W) LIGHT (1.4 W)ProCarManuals.com

Disassembly
NOTE:
Handle th e terminal s an d printe d circui t board s carefull y t o avoi d damagin g them .
Replac e th e speedometer , tri p meter , an d printe d circui t boar d A as a uni t i f an y o f the m is faulty .
Replac e th e tachometer , odometer , an d printe d circui t boar d B as a uni t i f an y o f the m is faulty .
SPEEDOMETE R MOUNTIN G SCREW S (x3 )
TACHOMETE R MOUNTIN G SCREW S (x3 )
VOLTAGE/FUE L GAUG E
MOUNTIN G SCREW S <x5 )COOLAN T TEMP./ENGIN E OI L PRESSUR E
GAUG E MOUNTIN G SCREW S (x6 )HOUSIN G
COOLAN T
TEMPERATURE /
ENGIN E OI L PRESSUR E GAUG E
Test , pag e 23-13 6 an d 23-13 7
SAFET Y INDICATO R
MOUNTING SCREW S (x2)
• TACHOMETE RSpecification, pag e 23-12 1• A/ T GEA R POSITIO NINDICATO RSee pag e 23-15 2
ODOMETE R
LIGH T HOUSIN G SHIF
T INDICATO R
SPEEDOMETE R
Specification, pag e 23-12 1
TRIP METE R FUEL/VOLTAG
E GAUG ETest, pag e 23-12 1and 23-13 4
BOARD-TO-BOAR D
CONNECTO RPRINTED CIRCUI TBOARD B
PRINTED CIRCUI T
BOAR D COVE R
TRI P METE R
RESE T BUTTO N
SAFETY INDICATO R
See pag e 23-147PRINTE D CIRCUI T
BOAR D A
FAC
E PANE L
VISO R
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Speedometer/Trip Meter/Odometer

Troubleshooting

NOTE: The numbers in the table show the troubleshooting sequence.ProCarManuals.com

Vehicle Speed Sensor (VSS)

Replacement

1. Disconnect the 3P connector from the vehicle speed

sensor (VSS).

3P CONNECTOR

MOUNTING BOLTS

2. Remove the mounting bolts and the VSS, then take

out the VSS assembly.

NOTE: The VSS drive link is a very small part, be

careful not to lose it.

3. Install in the reverse order of removal.
VSS

DRIVE LINK
COVERProCarManuals.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&#39; 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
&#34;F &#34; mark .
CAUTION : Tur n th e ignitio n switc h OF F befor e th e
pointe r reache s th e &#34;F&#34; mar k o n th e gaug e dial ; i f
yo u don&#39;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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Sending Uni t Tes t
Do no t smok e whil e workin g o n th e fue l
system . Kee p ope n flam e awa y fro m wor k area .
1 . Remov e th e rea r bulkhea d pane l behin d th e driver&#39; s
seat , the n remov e th e acces s panel .
2 . Wit h th e ignitio n switc h OFF , disconnec t th e 3 P con -
necto r fro m th e fue l gaug e sendin g unit .
3 . Remov e th e fiv e nuts , the n tak e th e fue l gaug e send -
in g uni t assembl y ou t o f th e fue l tank .
FUEL GAUG E SENDIN GUNIT ASSEMBL Y
4. Measur e th e resistanc e betwee n th e A an d B termi -
nal s b y movin g th e floa t t o th e height s liste d fo r E
(EMPTY) , 1/ 2 (HAL F FULL ) an d F (FULL) .
Floa t Positio n
Resistanc e
E
105-110
1/2
25.5-39. 5
F
2-5
(Botto m o f th e fue l tank )
Distanc e fro m floa t t o tan k botto m
E
1.16 in
(29. 5 mm )
1/2
5.5 5 in
(14 1 mm )
F
10.4 in
(26 3 mm )
5. I f unabl e t o obtai n th e abov e readings , replac e th e
fue l gaug e sendin g unit .
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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 &#34;H &#34; mark . Tur n th e
ignitio n switc h OF F befor e th e pointe r reache s th e
&#34;H &#34; mar k o n th e gaug e dial ; i f yo u don&#39;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 )
[&#34;C &#34; 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 &#34;8 &#34; mark .
CAUTION : Tur n th e ignitio n switc h OF F befor e th e
pointe r reache s th e &#34;8 &#34; mar k o n th e gaug e dial ; i f
yo u don&#39;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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Parking Brak e Switc h Tes t
Brak e Warnin g Syste m
1. Remov e th e cente r console , an d disconnec t th e con -
necto r fro m th e switch .
2. Chec k continuit y betwee n th e positiv e termina l an d
bod y groun d wit h th e brak e leve r u p an d down .
• Ther e shoul d b e n o continuit y wit h th e brak e leve r
down .
• Ther e shoul d b e continuit y wit h th e brak e leve r
up.
Brak e Flui d Leve l Switc h Tes t
1. Remov e th e reservoi r cap . Chec k tha t th e floa t
move s u p an d dow n freely ; i f i t doesn&#39;t , replac e th e
reservoi r cap assembly .
NOTE: (Canada )
If th e parkin g brak e switc h i s OK , bu t th e brak e
warnin g syste m doe s no t work , mak e th e inpu t
test fo r th e daytim e runnin g light s contro l uni t
(se e pag e 23-182 ).
2 . Chec k fo r continuit y betwee n th e terminal s wit h th e
floa t u p an d down .
There shoul d b e continuit y with the floa t dow n an d
no continuit y wit h th e floa t up ; i f continuit y is incor -
rect, replac e th e reservoi r ca p assembly .
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