1996 ACURA RL KA9 Service Repair Manual

Symptom-to-Component Char t
Hydrauli c Syste m (cont'd )
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NOTES
A Flus h th e AT P coole r an d coole r lin e (se e pag e 14-19 5 an d 14-196 ).
B Se t idl e rp m in gea r t o specifie d idl e speed . I f stil l n o good , adjus t moto r mount s a s outline d i n engin e
sectio n o f servic e manual .
C I f th e larg e clutc h pisto n O-rin g i s broken , inspec t th e pisto n groov e fo r roug h machining .
D I f th e clutc h pac k i s seize d o r i s excessivel y worn , inspec t th e othe r clutche s fo r wea r an d chec k th e orific e
contro l valve s an d throttl e valv e fo r fre e movement .
E I f throttl e valv e i s stuck , inspec t th e clutche s fo r wear .
G I f th e 1- 2 shif t valv e i s stuc k closed , th e transmissio n wil l no t upshift . I f stuc k open , th e transmissio n ha s
n o 1s t gear .
H I f th e 4- 3 shif t timin g valv e i s stuck , inspec t th e 2n d an d 3r d clutc h pack s fo r wear .
I I f th e 3- 4 orific e contro l valv e i s stuck , inspec t th e 3r d an d 4t h clutc h pack s fo r wear .
Imprope r alignmen t o f AT P pum p bod y an d torqu e converte r housin g ma y caus e AT P pum p seizure . Th e
symptom s ar e mostl y a n rpm-relate d tickin g nois e o r a hig h pitche d squeak .
L I f th e ATP straine r i s clogge d wit h particle s o f stee l o r aluminum , inspec t th e AT P pump . I f O K an d n o
caus e fo r th e contaminatio n i s found , replac e th e torqu e converter .
M I f th e 1s t clutc h feedpip e guid e i n th e rea r cove r i s score d b y th e mainshaft , inspec t th e bal l bearin g fo r
excessiv e movemen t i n th e transmissio n housing . I f OK , replac e th e rea r cove r a s i t i s dented . Th e O-rin g
under th e guid e is probabl y worn .
N Replac e th e mainshaf t i f th e bushing s fo r th e Islan d 2n d feedpip e ar e loos e o r damaged . I f th e 1s t feedpip e
i s damage d o r ou t o f round , replac e it . I f th e 2n d feedpip e is damage d o r ou t o f round , replac e th e rea r cover .
0 A worn o r damage d one-wa y (sprag ) clutc h i s mostl y a resul t o f shiftin g th e transmissio n in o r posi -
tio n whil e th e wheel s rotat e i n reverse , suc h a s rockin g th e vehicl e in snow .
P Inspec t th e fram e fo r collisio n damage .
Q Inspec t th e revers e clutc h fo r damag e o r wear .
Inspec t botto m o f 3r d clutc h fo r swir l marks .
Replac e revers e clutc h i f wor n o r damaged . I f transmissio n make s clicking , grinding , o r whirrin g noise ,
als o replac e mainshaf t revers e gear , revers e idle r gear , an d countershaf t revers e gear .
I f botto m o f 3r d clutc h i s swirle d an d transmissio n make s gea r noise , replac e th e countershaft .
R B e ver y carefu l no t t o damag e th e torqu e converte r housin g whe n replacin g th e mai n bal l bearing . Yo u
may als o damag e th e AT P pum p whe n yo u torqu e dow n th e ATP pum p body . Thi s wil l resul t i s AT P pum p
seizur e i f no t detected . Us e th e prope r tools .
S Instal l th e mai n sea l flus h wit h th e torqu e converte r housing . I f yo u pus h i t int o th e torqu e converte r
housin g unti l i t bottom s out , i t wil l bloc k th e flui d retur n passag e an d resul t i n damage .
T Hars h downshift s whe n coastin g t o a sto p wit h zer o throttl e ma y b e cause d b y th e A/ T clutc h pressur e con -
tro l solenoi d valv e no t working .
V Adjustin g th e throttl e valv e body , throttl e valve , an d A/ T clutc h pressur e contro l solenoi d valv e i s essentia l
fo r prope r operatio n o f th e transmission . No t onl y doe s i t affec t th e shif t qualit y i f misadjusted , bu t als o
th e lock-u p clutc h operation .
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Road Tes t
NOTE : War m u p th e engin e to norma l operatin g temperatur e (th e radiato r fa n come s on) .
1. Appl y parkin g brak e an d bloc k th e wheels . Star t th e engine , the n shif t t o positio n whil e pressin g th e brak e pedal .
Pres s th e accelerato r peda l an d releas e it suddenly . Th e engin e shoul d no t stall .
2. Repea t th e sam e tes t i n position .
3. Test-driv e th e vehicl e o n th e fla t roa d in position . Chec k tha t th e shif t point s occu r a t th e approximat e speed s
shown 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 .
a . Remov e th e PC M cove r t o expos e th e PC M fo r roa d testing ; refe r t o pag e 14-5 4 an d 14-55 .
b . Se t th e digita l multimete r t o chec k voltag e betwee n D 6 (+ ) termina l an d A2 6 (- ) termina l o f th e PC M fo r th e throttl e
positio n sensor .
NOTE : Refe r t o pag e 14-54 ; Ho w to us e th e Backprob e Set .
SRS component s ar e locate d in thi s area . Revie w th e SR S componen t locations , precautions , an d procedure s in th e SR S
(sectio n 24 ) befor e performin g repair s o r service .
PCM
D6 Termina l
DIGITAL MULTIMETE R(Commercially available )KS - AH M - 3 2 - 003 ,or equivalen t
BACKPROB E SE T07SAZ-001000A(two required )
BACKPROB EADAPTER
STACKIN G PATC H CORD S
A26 Termina l
PCM CONNECTOR S
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and Positions

Upshift

Downshift

Lock-up

NOTE:

• Lock-up ON: Torque Converter Clutch (Lock-up control) solenoid valve B turns on.

• Lock-up OFF: Torque Converter Clutch (Lock-up control) solenoid valve B turns off.ProCarManuals.com

Road Tes t
(cont'd )
4. Accelerat e to abou t 3 5 mp h (5 7 km/h ) s o th e transmissio n is i n 4th , the n shif t fro m positio n t o position . Th e vehi -
cl e shoul d immediatel y begi n slowin g dow n fro m engine braking .
CAUTION : D o no t shif t fro m o r positio n to o r positio n a t speed s ove r 6 3 mp h (10 0 km/h) ; yo u ma y dam -
ag e th e transmission .
5 . Chec k fo r abnorma l nois e an d clutc h slippag e in th e followin g positions .
(1st Gear ) Positio n
a . Accelerat e fro m a sto p a t ful l throttle . Chec k tha t ther e is n o abnorma l nois e o r clutc h slippage ,
b . Upshift s shoul d no t occu r wit h th e shif t leve r i n thi s position .
(2nd Gear ) Positio n
a . Accelerat e fro m a sto p a t ful l throttle . Chec k tha t ther e is n o abnorma l nois e o r clutc h slippage ,
b . Upshift s an d downshift s shoul d no t occu r wit h th e shif t leve r i n thi s position .
(Reverse ) Positio n
Accelerat e fro m a sto p a t ful l throttle , an d chec k fo r abnorma l nois e an d clutc h slippage .
6. Tes t i n (Park ) Positio n
Park th e vehicl e o n slop e (approx . 16°) , appl y th e parkin g brake , an d shif t int o position . Releas e th e brake ; th e vehi -
cl e shoul d no t move .
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