1996 ACURA RL KA9 Service Repair Manual

Electrical Troubleshootin g
Troubleshooting Flowchar t — Shif t Solenoi d Valv e B
• OB D II Sca n Too l indicate s Cod e
P0758 .
• Self-diagnosi s indicator ligh tblink s eigh t times .
Possibl e Caus e
• Disconnecte d shif t solenoi d
valv e B connecto r
• Shor t o r ope n i n shif t solenoi d
valv e B wir e
• Fault y shif t solenoi d valv e B
• Ope n V B SO L lin e
Chec k fo r a Shor t t o Power :
1. Tur n th e ignitio n switc h OFF .2. Disconnec t th e A (26P ) an d
E (26P ) connector s fro m th e
PCM .3. Tur n th e ignitio n switc h O N (II) .4. Measur e th e voltag e betwee n
th e E2 5 an d A2 6 terminals .
I s ther e voltage ? Repai
r shor t t o powe r i n th e wir e
betwee n th e E2 5 termina l an dthe shif t solenoi d valv e B .
Measur e Shif t Solenoi d Valv e B
Resistance :1. Tur n th e ignitio n switc h OFF .
2 . Measur e th e resistanc e
betwee n th e E2 5 an d A2 6 ter -
minals .
Is th e resistanc e 12-2 5 Chec
k fo r loos e PC M connectors .
I f necessary , substitut e a known -
goo d solenoi d valve s A an d B or
PC M an d recheck .
T o pag e 14-7 1 PC
M CONNECTOR S
ProCarManuals.com

From pag e 14-7 0
Chec k Shif t Solenoi d Valv e B fo r
a Shor t Circuit :
1 . Remov e th e shif t cabl e cove r
fro m th e transmission .
2 . Disconnec t th e shif t solenoi d
valve/A/ T clutc h pressur e con -
tro l solenoi d valv e harnes s 4 P
connector .
3 . Chec k fo r continuit y betwee n
th e E2 5 an d A2 6 terminals .
I s ther e continuity ?
Measur e Shif t Solenoi d Valv e B
Resistanc e a t th e Solenoi d
Connector :
Measur e th e resistanc e betwee n
th e No . 1 termina l o f th e shif t
solenoi d valve/A/ T clutc h pres -
sur e contro l solenoi d valv e har -
nes s 4 P connecto r an d bod y
ground .
Is th e resistanc e 12-2 5
Replac e th e shif t solenoi d valve s
A an d B .
Repai r shor t t o groun d in th e wir ebetwee n th e E2 5 termina l an d th eshif t solenoi d valv e B .
Chec k fo r ope n i n th e wir e
betwee n th e E2 5 termina l an d
th e shif t solenoi d valv e B .
Chec k fo r ope n i n th e wir e
betwee n th e E 1 termina l an d th e
under-hoo d fuse/rela y box . PC
M CONNECTOR S
SHIF T SOLENOI D
VALVE/A/ T CLUTC H PRESSUR E
CONTRO L SOLENOI D VALV E
HARNES S 4 P CONNECTO R
Termina l sid e o f
mal e terminal s
PC M CONNECTOR S
Wir e sid e o f femal e terminal s
Chec
k th e V B SO L Voltage :
1. Tur n th e ignitio n switc h O N (II) .2. Measur e th e voltag e betwee n
th e E l an d A2 6 terminals .
I s ther e voltage ?
ProCarManuals.com

Electrical Troubleshootin g
Troubleshooting Flowchar t — Countershaf t Spee d Senso r
• OB D II Sca n Too l indicate s Cod e
P0720 .
• Self-diagnosi s indicato r
ligh t blink s nin e times .
Chec k th e countershaf t spee d
senso r installation .
I s th e countershaf t spee d sen -
so r installe d properly ?
Measur e Countershaf t Spee d
Senso r Resistanc e a t th e Senso r
Connector :
1 . Disconnec t th e 3 P connecto r
fro m th e countershaf t spee d
sensor .
2 . Measur e th e resistanc e o f th e
countershaf t spee d sensor .
Is th e resistanc e 40 0 - 60 0
Chec k Countershaf t Spee d
Senso r fo r a Shor t Circuit :
1 . Disconnec t th e E (26P ) connec -
tor fro m th e PCM .2. Chec k fo r continuit y betwee nthe bod y groun d an d th e E 5
termina l an d E1 8 termina l
individually .
Possible Caus e
• Loos e o r fault y connectio n
betwee n th e PC M an d vehicl e
harness• Disconnecte d countershaf t
spee d senso r connecto r
• Shor t o r ope n i n countershaf t
spee d senso r wir e
• Fault y countershaf t spee d sen -
sor
Reinstal l an d recheck .
COUNTERSHAFT SPEE D
SENSO R 3 P CONNECTO R
Termina l sid e o f mal e terminal s
Replac e th e countershaf t spee d
sensor .
Wire sid e o f femal e terminal s
I s ther e continuity ? Repai
r shor t i n th e wire s betwee n
th e E 5 an d E1 8 terminal s an d th e
countershaf t spee d sensor .
T o pag e 14-7 3 PC
M CONNECTO R E (26P )
ProCarManuals.com