1997 ACURA NSX service

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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14. Measure the clearance between the clutch end plate

and top disc with a dial indicator. Zero the dial indi-

cator with the clutch end plate lowered, and lift it up

to the snap ring. The distance that the clutch end

plate moves is the clearance between the clutch end

plate and top disc.

NOTE: Measure at three locations.

End Plate-to-Top Disc Clearance:
Reassembly (cont'd)
Clutch

15. If the clearance is not within the service limits, select

a new clutch end plate from the following table.

NOTE: If the thickest clutch end plate is installed,

but the clearance is still over the standard, replace

the clutch discs and clutch plates.

CLUTCH END PLATE

2ND, 3RD, 4TH and 1ST-HOLD CLUTCH:

1ST CLUTCH:ProCarManuals.com

Shift Cabl e
Removal/Installatio n
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 service .
Make sur e lift s ar e place d properl y (se e sectio n 1 ).
1 . Remov e th e cente r consol e pane l (se e sectio n 20 ).
2 . Remov e th e shif t cabl e b y removin g th e cotte r pi n an d shif t leve r pi n fro m th e shif t lever . Remov e th e mountin g bolt s
fro m th e bracke t beam .
3 . Remov e th e shif t cabl e clamp .
4 . Remov e th e shif t cabl e holde r an d shif t cabl e cover .
5 . Remov e th e shif t cabl e b y removin g th e loc k pi n an d contro l leve r pi n fro m th e contro l lever .
CAUTION : Tak e car e n o to ben d th e cabl e whe n removin g it .
6. Instal l th e shif t cabl e in th e revers e orde r o f removal .
7. Afte r installation , chec k th e cabl e adjustmen t (se e pag e 14-171 ).
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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 service .
Shift Leve r
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Component Location s
Index
NOTE :
• I f a n intac t airba g assembl y ha s bee n remove d fro m a scrappe d vehicl e o r ha s bee n foun d defectiv e o r damage d durin g
transit , storag e o r service , i t shoul d b e deploye d (se e sectio n 24 ).
• Befor e removin g th e gearbox , remov e th e ignitio n ke y t o loc k th e steerin g shaft .
• Afte r installin g th e gearbox , chec k th e whee l alignmen t an d adjus t i f necessary .
STEERING GEARBO XRemoval/Installation , pag e 17-5 3
Illustrate d Index , pag e 17-5 7
Pinio n Preloa d Inspection , pag e 17-5 8
Rac k Guid e Scre w Adjustment , pag e 17-5 8
STEERIN
G COLUM N
Removal , pag e 17-4 7
Inspection , pag e 17-4 9
Installation , pag e 17-5 0
STEERIN G WHEEL /AIRBAG ASSEMBL YRemoval, pag e 17-4 3
Disassembly , pag e 17-4 4
Installation , pag e 17-4 5
EP
S CONTRO L UNI T
Replacement , pag e 17-62
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Self-Diagnosis Function

The EPS control unit monitors the system inputs and outputs, and the driving current of the motor. If there is a problem in

the system, the control unit turns the system off by actuating the relay. Power assist stops and normal manual steering

operation resumes. The control unit also turns the EPS indicator light on to alert the driver, and memorizes the problem in

the form of a code. Connecting the terminals of the service check connector with the SCS service connector (special tool)

enables the EPS indicator light to blink the problem code when the ignition switch is turned on (II).

Unloader Control

If the steering wheel is turned fully and held in the full-lock position, the steering torque reaches the maximum point, and

an over-current flows to the motor. The control unit detects this and reduces the current flow to the motor.

Average Moving Current Control

The electric current flow to the motor is estimated from the current values detected by the current sensor, and the average

current is obtained at two second intervals. The motor driving current is suppressed when the average current value

exceeds a predetermined marginal value. The control unit regulates the motor current during continuous loading to sup-

press any excessive temperature rise in the motor.ProCarManuals.com

Diagnostic Troubl e Cod e (DTC ) Indicatio n
1. Connec t th e SC S servic e connecto r t o th e servic e chec k connecto r unde r th e glov e box .
2 . Tur n th e ignitio n switc h O N (II) , bu t d o no t star t th e engine .
3 . Recor d th e blinkin g frequenc y o f th e EP S indicato r light . Th e blinkin g frequenc y indicate s th e diagnosti c troubl e cod e
(DTC) .
NOTE : Chec k th e DT C carefull y an d recor d it . Th e memor y o f th e DT C is erase d i f th e connecto r i s disconnecte d fro m
th e EP S contro l unit .
SCS SERVIC E CONNECTO R07PAZ-001010 0
SERVICE CHEC KCONNECTO R (2P )
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Steering Whee l
Disassembly/Reassembl y
Store a remove d airba g assembl y wit h th e
pa d surfac e up . I f th e airba g i s improperl y store d fac e
down , accidenta l deploymen t coul d prope l th e uni t wit h
enoug h forc e to caus e seriou s injury .
NOTE : I f a n intac t driver' s airba g assembl y ha s bee n
remove d fro m a scrappe d vehicl e o r ha s bee n foun d
defectiv e o r damage d durin g transit , storag e o r service ,
it shoul d b e deploye d (se e sectio n 24 ). CAUTION
:
* Carefull y inspec t th e driver' s airba g assembl y befor e
installing . D o no t instal l a n driver' s airba g assembl y
that show s sign s o f bein g droppe d o r improperl y
handled , suc h a s dents , crack s o r deformation .
* Alway s kee p th e shor t connecto r o n th e airba g 3 P
connecto r whe n th e harnes s i s disconnected .
* D o no t disassembl e o r tampe r wit h th e driver' s
airbag assembly .
STEERING WHEE L
STEERIN G WHEE LLOWER COVE R
ACCES S PANE L
DRIVER' SAIRBAG ASSEMBL Y
17-44
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