1995 ACURA TL Service Repair Manual

Troubleshooting Procedure s
Checking th e Diagnosti c Troubl e Cod e (DTC )
wit h a n OB D II Sca n too l o r Hond a PG M Teste r
When th e PC M sense s a n abnormalit y i n th e inpu t o r outpu t systems , th e indicato r ligh t i n th e gaug e assembl y wil l
blink . Whe n th e 16 P Dat a Lin k Connecto r (DLC ) (locate d behin d th e ashtray ) i s connecte d to th e OB D II Sca n Too l o r Hond a
PG M Teste r a s shown , th e sca n too l o r teste r wil l indicat e th e Diagnosti c Troubl e Cod e (DTC ) whe n th e ignitio n switc h i s
turne d O N (II) .
Whe n th e indicato r ligh t ha s bee n reporte d on , connec t th e OB D II Sca n Too l conformin g t o SA E J197 8 o r Hond a PG M
Teste r t o th e DL C (16P ) behin d th e ashtray . Tur n th e ignitio n switc h o n (II) , an d observ e th e DT C o n th e scree n o f th e OB D II
Sca n Too l o r Hond a PG M Tester . Afte r determinin g th e DTC , refe r t o th e electrica l syste m Symptom-to-Componen t Char t
o n pag e 14-6 8 an d 14-69 .
NOTE : Se e th e OB D II Sca n Too l o r Hond a PG M Teste r user' s manua l fo r specifi c instructions .
DATA LIN K CONNECTO R (16P )
OBD II SCA N TOO L o r
HOND A PG M TESTE R
Some PGM-F I problem s wil l als o mak e th e indicator light com e on . Afte r repairin g th e PGM-F I system , disconnec t th e
BAC K UP , RADI O fus e (1 0 A ) i n th e under-hoo d fuse/rela y bo x fo r mor e tha n 1 0 second s t o rese t th e PC M memory , the n
retest .
NOTE : Disconnectin g th e BAC K UP , RADI O fus e als o cancel s th e radi o anti-thef t code , prese t station s an d th e cloc k setting .
Ge t th e customer' s cod e number , an d mak e not e o f th e radi o preset s befor e removin g th e fus e s o yo u ca n rese t them .
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Checking th e Diagnosti c Troubl e Cod e (DTC )
wit h th e Servic e Chec k Connecto r an d Specia l Too l
Whe n th e PC M sense s a n abnormalit y i n th e inpu t o r outpu t systems , th e indicato r ligh t i n th e gaug e assembl y wil l blink .
Whe n th e Servic e Chec k Connecto r (locate d unde r th e das h o n th e passenge r side ) i s connecte d wit h th e specia l too l a s
shown , th e indicato r ligh t wil l blin k th e Diagnosti c Troubl e Cod e (DTC ) whe n th e ignitio n switc h i s turne d o n (II) .
Whe n th e indicato r ligh t ha s bee n reporte d on , connec t th e Servic e Chec k Connecto r wit h th e specia l tool .
Then tur n th e ignitio n switc h o n (II ) an d observ e th e indicato r light .
GAUG E ASSEMBL Y
SERVICE CHEC K
CONNECTO R (2P )
INDICATO R
LIGH T
SCS SERVIC E CONNECTO R07PAZ-001010 0
Codes 1 throug h 9 ar e indicate d b y individua l shor t blinks . Code s 1 0 an d abov e ar e indicate d b y a serie s o f lon g an d shor t
blinks . On e lon g blin k equal s 1 0 shor t blinks . Ad d th e lon g an d shor t blink s togethe r t o determin e th e code . Afte r deter -
mining th e code , refe r to th e electrica l syste m Symptom-t o Component Char t o n page s 14-6 8 an d 14-69 .
Some PGM-F I problem s wil l als o mak e th e indicato r ligh t com e on . Afte r repairin g th e PGM-F I system, disconnec t th e
BAC K UP , RADI O fus e (1 0 A ) i n th e under-hoo d fuse/rela y bo x fo r mor e tha n 1 0 second s t o rese t th e PC M memory , the n
retest .
NOTE : Disconnectin g th e BAC K UP , RADI O fus e als o cancel s th e radi o anti-thef t code , prese t station s an d th e cloc k setting .
Ge t th e customer' s cod e number , an d mak e not e o f th e radi o preset s befor e removin g th e fus e s o yo u ca n rese t them .
(cont'd )
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Troubleshooting Procedure s
(cont'd)
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 .
1 . Remov e th e heate r lowe r cove r o n th e passenger' s sid e (se e sectio n 20 ).
2 . Pul l th e carpe t bac k t o expos e th e PC M cover .
3 . Remov e th e PC M cove r mountin g nuts , the n tur n th e PC M over .
MOUNTIN G NUT S
PCM
PCM COVE R
4. Inspec t th e circui t o n th e PC M accordin g t o th e troubleshootin g flowchar t wit h th e specia l tool s an d a digita l multime -
te r a s shown .
How to us e th e Backprob e Se t
Connec t th e backprob e adapter s t o th e stackin g patc h cords , an d connec t th e cord s t o a multimeter . Usin g th e wir e
insulatio n a s a guid e fo r th e contoure d ti p o f th e backprob e adapter , gentl y slid e th e ti p int o th e connecto r fro m th e
wir e sid e unti l i t come s i n contac t wit h th e termina l en d o f th e wire .
BACKPROB E SE T07SAZ-00100 ABACKPROBE
ADAPTE R
STACKIN G PATC H
CORD S
PCM(tw o required )
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PCM Reset Procedure

1. Make sure you have the anti-theft code for the radio, then write down the frequencies for the radio's preset buttons.

2. Turn the ignition switch OFF.

3. Remove the BACK UP, RADIO fuse (10 A) from the under-hood fuse/relay box for 10 seconds to reset the PCM.

NOTE: The PCM memory can also be cleared by using the OBD II Scan Tool or Honda PGM Tester.

BACK UP, RADIO

(10 A) FUSE

UNDER-HOOD

FUSE/RELAY

BOX

Final Procedure

NOTE: This procedure must be done after any troubleshooting.

1. Turn the ignition switch OFF.

2. Disconnect the OBD II Scan Tool or Honda PGM Tester from the Data Link Connector (16P), or remove the special tool

from the Service Check Connector.

3. Reset the PCM.

4. Turn the ignition switch ON (II).

5. Enter the anti-theft code for the radio, then enter the customer's radio station presets.ProCarManuals.com

Symptom-to-Component Char t
Electrica l Syste m
Diagnosti c
Troubl e Cod e
(DTC) *
P1753
(1)
P175 8
(2)
P179 1
(4)
P170 5
(5)
P170 6
(6)
P075 3
(7)
P075 8
(8)
P072 0
(9)
P071 5
(15)
P176 8
(16)
Indicato r
Light
Blink s
Blink s
Blinks
Blink s
OFF
Blink s
Blink s
Blinks
'96, '97
model s
OFF
'98 mode l
Blinks
Blink s
Sympto m
• Lock-u p clutc h doe s no t engage .
• Lock-u p clutc h doe s no t disen -
gage.
• Lock-u p clutc h doe s no t engage .
• Lock-u p clutc h doe s no t engage .
• Fail s t o shif t othe r tha n 2n d - 4t h
gears .
• Lock-u p clutc h doe s no t engage .
• Fail s t o shif t othe r tha n 2n d - 3r d
- 4t h gears .
• Lock-u p clutc h doe s no t engage .
• Fail s to shif t (betwee n 1s t - 4t h o r
2n d - 3r d gea r only) .
• Fail s t o shif t (stuc k in 4t h gear) .
• Fail s t o shif t (stuc k i n 1s t o r 4t h
gears) .
• Lock-u p clutc h doe s no t engage .
• Transmissio n jerk s har d whe n
shifting .
• Lock-u p clutc h dos e no t engage .
• Transmissio n jerk s har d whe n
shifting .
• Lock-u p clutc h doe s no t engage .
• Fail s t o shif t (stuc k in 4t h gear) . Possibl
e Caus e
• Disconnecte d lock-u p contro l solenoi d
valv e A connecto r
• Shor t o r ope n i n lock-u p contro l
solenoi d valv e A wir e
• Fault y lock-u p contro l solenoi d valv e A
• Ope n in V B SO L lin e
• Disconnecte d lock-u p contro l solenoi d
valv e B connecto r
• Shor t o r ope n in lock-u p contro l
solenoi d valv e B wir e
• Fault y lock-u p contro l solenoi d valv e B
• Ope n in V B SO L lin e
• Disconnecte d vehicl e spee d senso r
(VSS) connecto r
• Shor t o r ope n in VS S wir e
• Fault y VS S
• Shor t i n A/ T gea r positio n switc h wir e
• Fault y A/ T gea r positio n switc h
• Disconnecte d A/ T gea r positio n switc h
connecto r
• Ope n in A/ T gea r positio n switc h wir e
• Fault y A/ T gea r positio n switc h
• Disconnecte d shif t contro l solenoi d
valv e A connecto r
• Shor t o r ope n i n shif t contro l solenoi d
valv e A wir e
• Fault y shif t contro l solenoi d valv e A
• Ope n in V B SO L lin e
• Disconnecte d shif t contro l solenoi d
valv e B connecto r
• Shor t o r ope n i n shif t contro l solenoi d
valv e B wir e
• Fault y shif t contro l solenoi d valv e B
• Ope n in V B SOL line
• Disconnecte d countershaf t spee d sen -
sor connecto r
• Shor t o r ope n i n countershaf t spee d
senso r wir e
• Fault y countershaf t spee d senso r
• Disconnecte d mainshaf t spee d senso r
connecto r
• Shor t o r ope n i n mainshaf t spee d sen -
so r wir e
• Fault y mainshaf t spee d senso r
• Disconnecte d linea r solenoi d connecto r
• Shor t o r ope n i n linea r solenoi d wir e
• Fault y linea r solenoi d
• Ope n in V B SOL line Refe
r t o
Pag e
14-7 0
14-72
14-74
14-7 5
14-78
14-8 0
14-82
14-84
14-8 6
14-8 8
(DTC)* : Th e DTC s in parenthese s ar e th e code s o f th e indicato r ligh t indicate s whe n th e servic e chec k connecto r i s con -
necte d to th e specia l too l (SC S servic e connector) .
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Diagnostic
Troubl e Cod e
(DTC) *
P0740
(40)
P073 0
(41)
Indicato r
Ligh t
OFF
OF F
Sympto m
• Lock-u p clutc h doe s no t engage .
• Fail s to shif t (betwee n 1s t - 2nd ,
2n d - 4t h o r 2n d - 3r d gear s only) .
• Fail s t o shif t (stuc k i n 1s t o r 4t h
gears) .
Possibl e Caus e
• Fault y lock-u p contro l syste m
• Fault y shif t contro l syste mRefer t o
Pag e
14-8 9
14-9 0
(DTC)* : Th e DTC s in parenthese s ar e th e code s o f th e indicato r ligh t indicate s whe n th e servic e chec k connecto r i s con -
necte d t o th e specia l too l (SC S servic e connector) .
If th e self-diagnosti c indicato r ligh t doe s no t blink , perfor m a n inspectio n accordin g t o th e tabl e below .
Sympto m
indicato r ligh t doe s no t com e o n fo r tw o second s afte r ignitio n
switc h i s firs t turne d o n (II) .
indicato r ligh t i s o n constantl y (no t blinking ) wheneve r th e ignitio n
switc h i s o n (II) .
Shif t leve r canno t b e move d fro m positio n wit h th e brak e peda l
depressed . Inspectio
n
Chec k brak e switc h signal . Ref.
page
14-9 1
14-9 3
14-9 4
NOTE : Sometime s th e indicato r ligh t an d th e Malfunctio n Indicato r Lam p (MIL ) ma y com e o n simultaneously . I f so ,
repai r th e PGM-F I syste m accordin g t o th e DTC , the n rese t th e memor y b y removin g th e BAC K UP , RADI O fus e in th e under -
das h fuse/rela y bo x fo r mor e tha n 1 0 seconds . Driv e th e vehicl e fo r severa l minute s a t a spee d ove r 3 0 mp h (5 0 km/h) , the n
rechec k th e DTC .
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Lock-up Contro l Solenoi d Valv e A/ B
Tes t
STANDARD : 1 2 - 2 5 W
1
. Disconnec t th e transmissio n sub-harnes s connecto r
(14P).
2. Measur e th e resistanc e betwee n th e No . 1 termina l
(solenoi d valv e A ) o f th e transmissio n sub-harnes s
connecto r an d bod y ground , an d betwee n th e No . 3
termina l (solenoi d valv e B ) an d bod y ground .
TRANSMISSIO N SUB-HARNES SCONNECTOR (14P )
TRANSMISSIO NSUB-HARNESSCONNECTOR (10P )
5. I f th e resistanc e i s withi n th e standard , connec t th e
No . 1 termina l o f th e lock-u p contro l solenoi d valv e
connecto r t o th e batter y positiv e terminal . A clickin g
soun d shoul d b e heard . Connec t th e No . 2 termina l t o
th e batter y positiv e terminal . A clickin g soun d shoul d
b e heard . Replac e th e lock-u p contro l solenoi d valv e
assembl y if n o clickin g soun d is heard .
I
f th e resistanc e i s OK , replac e th e transmissio n
sub-harness .
Replace th e lock-u p contro l solenoi d valv e
assembl y if th e resistanc e is ou t o f specification .
LOCK-UP CONTRO LSOLENOID VALV E ASSEMBL Y
3. I f th e resistanc e i s ou t o f specification , disconnec t
th e 2 P connecto r fro m th e lock-u p contro l solenoi d
valv e A/B .
4 . Measur e th e resistanc e betwee n th e No . 2 termina l
(solenoi d valv e A ) o f th e lock-u p contro l solenoi d
connecto r an d bod y ground , an d betwee n th e No . 1
termina l (solenoi d valv e B ) an d bod y ground .
STANDARD : 1 2 - 2 5 W
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Lock-up Contro l Solenoi d Valve A/B
Replacemen t
NOTE: Lock-u p contro l solenoi d valv e A an d B mus t b e
replace d a s a n assembly .
1 . Remov e th e mountin g bolt s an d lock-u p contro l
solenoi d valv e assembly .
2 . Clea n th e mountin g surfac e an d flui d passage s o f
th e lock-u p contro l solenoi d valv e assembly , an d
instal l a ne w lock-u p contro l solenoi d valv e A/ B wit h
a ne w filter/gasket .
NOTE : Instal l th e filter/gaske t i n th e directio n shown .
3 . Chec k th e connecto r fo r rust , dir t o r oil , the n recon -
nec t i t securely .
Clean mountin g surfac eand flui d passages .
FILTER/GASKE TReplace.Install i n thi sdirection .
6x 1. 0 m m12N- m(1.2kgfm , 9lbf-ft )
LOCK-U P CONTRO L
SOLENOI D VALV E
ASSEMBL Y
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