1997 ACURA NSX Service Repair Manual

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Road Tes t
positio n
SR S component s ar e locate d in 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 service .
1 . Appl y parkin g brak e an d bloc k th e wheels . Star t th e engine , an d war m u p th e engin e t o norma l operatin g temperatur e
(th e coolin g fa n come s on) . (Whe n th e engin e coolan t temperatur e i s belo w norma l operatin g temperature , th e shif t
point i s highe r tha n specifie d vehicl e speed. ) Shif t t o positio n whil e depressin g th e brak e pedal . Depres s th e acceler -
ato r pedal , an d releas e it suddenly . Th e engin e shoul d no t stall .
2 . Chec k tha t th e shif t point s o n a fla t roa d occu r a t th e approximat e speed s show n o n th e nex t page . Als o chec k fo r
abnorma l nois e an d clutc h slippage .
NOTE : Throttl e positio n senso r voltag e represent s th e throttl e opening .
-1 . Remov e th e sea t bac k panel s (se e sectio n 20 ).
-2 . Remov e th e connecto r holde r fro m th e TC S contro l unit , an d disconnec t th e antenn a lead . The n remov e th e TC S
contro l uni t (se e pag e 14-52 ).
NOTE : D o no t disconnec t th e TC S contro l uni t connectors .
-3 . Remov e th e TC M an d tur n it over .
- 4 . Se t th e digita l multimete r t o chec k voltag e betwee n th e B 4 (+ ) termina l an d A1 3 (- ) o r A2 6 (- ) termina l o f th e TC M
fo r th e throttl e positio n sensor .
BACKPROB E SE T07SAZ-001000 A(Two required )
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Upshift

Downshift

3. Accelerate to about 35 mph (57 km/h) so the transmission is in 4th, then shift from position to position. The vehi-

cle should immediately begin slowing down from engine braking.

CAUTION: Do not shift from position to position at speeds over 76 mph (123 km/h) or from position to posi-

tion at speeds over 45 mph (73 km/h); you may damage the transmission.

4. Check for abnormal noise and clutch slippage in the following positions.

(1st Gear) Position

Accelerate from a stop at full throttle. Check that there is no abnormal noise or clutch slippage.

Upshifts should not occur in this position.

(2nd Gear) Position

Accelerate from a stop at full throttle. Check that there is no abnormal noise or clutch slippage.

Upshifts and downshifts should not occur in this position.

(3rd Gear) Position

Shift to position, then start the car in 1st or 2nd gear and shift to 3rd gear with the shift switch.

Accelerate at full throttle. Check that there is no abnormal noise or clutch slippage.

(Reverse) Position

Accelerate from a stop at full throttle, and check for abnormal noise and clutch slippage.

5. Test in (Parking) Position.

Park the vehicle on a slope (approx. 16°) and apply the parking brake, then shift into position. Release the brake; the

vehicle should not move.ProCarManuals.com

Test
Stal l Spee d
CAUTION :
• T o preven t transmissio n damage , d o no t tes t stal l spee d fo r mor e tha n 1 0 second s a t a time .
• D o no t mov e th e shif t leve r whil e raisin g th e engin e speed .
• B e sur e to remov e th e pressur e gaug e befor e testin g stal l speed .
1 . Engag e th e parkin g brak e an d bloc k al l fou r wheels .
2 . Connec t a tachomete r t o th e engine (or us e th e PG M Tester) , the n star t th e engine .
3 . Mak e sur e th e A/ C switc h is OFF .
4. Afte r th e engin e ha s warme d u p to norma l operatin g temperatur e (th e coolin g fa n come s on) , shif t int o position .
5 . Full y depres s th e brak e peda l an d accelerato r fo r 6 to 8 seconds , an d not e engin e speed .
6. Allo w 2 minute s fo r cooling , the n repea t sam e tes t i n positions .
NOTE:
• Stal l spee d test s shoul d b e use d fo r diagnosti c purpose s only .
• Stal l spee d shoul d b e th e sam e in positions .
Stal l Spee d RPM : Specification : 2,10 0 rp m
Servic e Limit : 1,95 0 - 2,25 0 rp m
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Checking/Changing
Fluid Leve l
Checkin g
NOTE : Chec k th e flui d leve l wit h th e engin e a t nor -
ma l operatin g temperatur e (th e coolin g fa n come s
on).
1. Par k th e vehicl e o n leve l ground . Tur n of f th e engine .
2 . Remov e th e dipstic k (yello w loop ) fro m th e trans -
mission , an d wip e it wit h a clea n cloth .
NOTE : Chec k th e transmissio n flui d 6 0 to 9 0 second s
afte r shuttin g of f th e engine .
3 . Inser t th e dipstic k int o th e transmission .
4 . Remov e th e dipstick , an d chec k th e flui d level . I t
shoul d b e betwee n th e uppe r an d lowe r marks .
5 . I f th e leve l i s belo w th e lowe r mark , pou r th e recom -
mende d fluid * int o th e tub e t o brin g i t t o th e uppe r
mark.
6. Inser t th e dipstic k bac k int o th e transmission .
Changing
1. Brin g th e transmissio n u p t o operatin g temperatur e
b y drivin g th e vehicle . Par k th e vehicl e o n leve l
ground , tur n th e engin e off , the n remov e drai n
plug .
2 . Reinstal l th e drai n plu g wit h a ne w washer , the n
refil l th e transmissio n wit h th e recommende d fluid *
t o th e ful l mar k o n th e dipstick .
Automati c Transmissio n Flui d Capacity :
2. 9 (3. 1 U S qt. , 2. 6 Imp . qt. ) a t chang e
7. 0 (7. 4 U S qt. , 6. 2 Imp . qt. ) afte r overhau l
6.3 (6. 7 U S qt. , 5. 5 Imp . qt. ) afte r overhau l
wit h ne w torqu e
converter .
Recommende d Automati c Transmissio n Fluid
Genuin e Hond a Premiu m Formul a Automati c
Transmissio n Flui d (ATF) *
*Alway s us e Genuin e Hond a Premiu m Formul a
Automati c Transmissio n Flui d (ATF) .
Usin g a non-Hond a AT F ca n affec t shif t quality .
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• Whil e testing , b e carefu l o f th e rotatin g rea r wheels .
• Mak e sur e lift s ar e place d properl y (se e sectio n 1 ).
CAUTION :
• Befor e testing , b e sur e th e transmissio n flui d is fille d
to th e prope r level .
• War m u p th e engin e befor e testing .
1 . Rais e th e vehicl e (se e sectio n 1 ).
2 . War m u p th e engine , the n sto p th e engin e an d con -
nec t a tachometer .
3 . Connec t a pressur e gaug e t o eac h inspectio n hole .
18N-m(1.8kgf-m,13lbf-ft )
CAUTION: Connec t th e pressur e gaug e securely ;
b e sur e no t t o allo w dus t an d othe r foreig n parti -
cle s t o ente r th e inspectio n hole .
A/T OI L PRESSUR E A/ T OI L PRESSUR E
GAUG E SE T W/PANE L HOSE , 221 0 m m
07406-002040 0 07MA J - PY4011 A(4 Required )
A/ T LO W PRESSUR E A/ T OI L PRESSUR E
GAUG E W/PANE L HOS E ADAPTE R
0740 6 - 007030 0 07MA J - PY4012 0
( 4 Required )
4. Star t th e engine , an d measur e th e respectiv e pres -
sur e a s follows .
• Lin e Pressure/Clutc h Pressur e
• Clutc h Low/Hig h Pressur e
• Throttl e B Pressur e
5 . Instal l a ne w washe r an d th e sealin g bol t i n th e
inspectio n hole , an d tighte n to th e specifie d torque .
Torque : 1 8 N- m (1. 8 kgf-m , 1 3 Ibf-ft )
NOTE : D o no t reus e ol d aluminu m washers . •
Lin e Pressure/Clutc h Pressur e Measuremen t
1 . Allo w th e rea r wheel s t o rotat e freely .
2 . Ru n th e engin e a t 2,00 0 rpm .
3 . Shif t th e shif t leve r a s show n o n th e char t o n
th e nex t page .
4 . Measur e eac h clutc h pressure .
While testing , b e carefu l o f th e rotat -
in g rea r wheels .
Pressur e Testin g
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1ST-HOLD CLUTCH PRESSURE

INSPECTION HOLE

4TH CLUTCH PRESSURE

INSPECTION HOLE

LINE PRESSURE/1ST CLUTCH

PRESSURE INSPECTION HOLE
2ND CLUTCH PRESSURE

INSPECTION HOLE

3RD CLUTCH PRESSURE

INSPECTION HOLEProCarManuals.com

(cont'd)
Pressure Testing

• Clutch Low/High Pressure Measurement

While testing, be careful of the rotating

rear wheels.

1. Allow the rear wheels to rotate freely.

2. Start the engine and let it idle.

3. Shift to position.

4. Slowly press down the accelerator pedal to increase

engine rpm until pressure is indicated on the oil

pressure gauge. Then release the accelerator pedal,

allowing the engine return to an idle, and measure

the pressure reading.
5. With the engine idling, press down the accelerator

pedal approximately 1/2 of its possible travel and

increase the engine rpm until pressure is indicated

on the gauge. Note the highest pressure reading

obtained.

6. Repeat steps 4 and 5 for each clutch pressure being

inspected.ProCarManuals.com