ATSG Honda BAXA MAXA M6HA

HOND A ACCO RD BAXA/MAX A HOND A PREL UDE M6HA

INDEX OVERVIEW .............. ............................. .............................. .............................. ........................... ............ ............... .............................. .............................. .............................. .............................. ....................... ........ 3 CLUTCH APPLICATION CHART CHART............. ............................ .............................. .............................. .............................. .............................. .............................. .............................. ............... 4 COMPONENT LOCATOR......................... LOCATOR........................................ .............................. .............................. .............................. .............................. .............................. .............................. .................. ... 5 SOLENOID FUNCTION CHART ............... .............................. .............................. .............................. .............................. .............................. .............................. .............................. ................. 7 LOCKUP OPERATION.................. OPERATION................................. .............................. .............................. .............................. .............................. .............................. .............................. .............................. ............... 13 SOLENOID OPERATION................... OPERATION.................................. .............................. .............................. .............................. .............................. .............................. .............................. ......................... .......... 14 PRESSURE SWITCH DIAGNOSIS ............... .............................. .............................. ............... .............. ............................. .............................. .............................. ............................ ............. 18 SPORT SHIFT MODE (PRELUDE ONL ONLY) Y) .............. ............................. .............................. .............................. .............................. .............................. .............................. ................. .. 19 GRADE LOGIC CONTROL SYSTEM.......... SYSTEM......................... .............................. .............................. .............................. .............................. .............................. ............................ ............. 20 CODE RETRIEVALPROCEDURE (ACCORD)..... (ACCORD).................... .............................. .............................. .............................. .............................. .............................. ................. .. 22 CODE CLEARING PROCEDURE (ACCORD) ............. ............................ .............................. .............................. .............................. .............................. .......................... ........... 23 CODE RETRIEVALPROCEDURE (PRELUDE).. (PRELUDE)................. .............................. .............................. .............................. .............................. .............................. .................... ..... 24 CODE CLEARING PROCEDURE (PRELUDE). (PRELUDE)................ .............................. .............................. .............................. ............................... ............................... ...................... ....... 25 DIAGNOSTIC TROUBLE CODE DEFINITIONS ............. ............................ .............................. .............................. .............................. .............................. .................... ..... 26 TCM WIRING DIAGRAM AND TERMINAL LOCATIONS (ACCORD).... (ACCORD)................... .............................. .............................. ........................ ......... 29 TCM WIRING DIAGRAM AND TERMINAL LOCATIONS (PRELUDE). (PRELUDE)................ .............................. .............................. .......................... ........... 30 TROUBLE SHOOTING GUIDES ............. ............................ .............................. .............................. .............................. .............................. .............................. .............................. ................... .... 31 A/T GEAR POSITION SWITCH CONTINUITY CHART CHART.............. ............................. .............................. .............................. .............................. ........................ ......... 35 OIL PRESSURE CHART CHART............... .............................. .............................. .............................. .............................. .............................. .............................. .............................. .............................. ................. .. 36 AUTOMATIC AUTOMA TIC TRANSMISSI TRANSMISSION ON FLUID REQUIREMENTS..... REQUIREMENTS.................... .............................. .............................. .............................. ........................... ............ 37 TRANSMISSION REMOV REMOVAL............. AL........................... .............. ............... .............................. .............................. .............................. .............................. .............................. .......................... ........... 38 DIS-ASSEMBLY END COVER AND IDLER GEARS (BAXA)..... (BAXA).................... .............................. .............................. .............................. .......................... ........... 43 DIS-ASSEMBLY END COVER AND IDLER GEARS (M6HA)...... (M6HA)..................... .............................. .............................. .............................. ......................... .......... 44 GENERAL DIS-ASSEMBLY DIS-ASSEMBLY.............. ............................. .............................. .............................. ............................... ............................... .............................. .............................. ........................... ............ 46 VAL ALVE VE BODY DIS-ASSE DIS-ASSEMBL MBLY Y............... .............................. .............................. .............................. .............................. .............................. .............................. .............................. .................... ..... 50 INSPECTION AND RE-ASSEMBLY RE-ASSEMBLY............... .............................. .............................. .............................. .............................. .............................. .............................. ........................... ............ 61 GENERAL RE-ASSEMBLY RE-ASSEMBLY............... .............................. .............................. ............................... ............................... .............................. .............................. .............................. .......................... ........... 85 TORQUE CONVERTER AND DRIVE PLATE....................... PLATE...................................... .............................. .............................. .............................. .............................. .................. ... 94 TRANSMISSION INSTALLA INSTALLATION......... TION........................ .............................. .............................. .............................. .............................. .............................. .............................. .................... ..... 95 SPECIFICATIONS (BAXA)...... (BAXA)..................... .............................. .............................. .............................. .............................. .............................. .............................. .............................. ................... .... 101 SPECIFICATIONS (M6HA)....... (M6HA)...................... .............................. .............................. .............................. .............................. .............................. .............................. .............................. .................. ... 106 SPECIAL TOOLS............. TOOLS............................ .............................. .............................. ........................ ......... ............... .............................. .............................. .............................. .............................. ................... .... 109 BULLETINS................... BULLETINS.... .............................. .............................. ............................ ............. ............. ............................ .............................. .............................. .............................. .............................. .................... ..... 110 110

AUTOMATIC AUTOMA TIC TRANSMISSION TRANSMISSION SERVICE GROUP SERVICE GROUP 18639 S.W S.W.. 107TH 1 07TH AVENUE AVENUE MIAMI, FLORIDA 33157 (305) 670-4161 Copyright Copyri ght © ATSG 1999

Updated August, 2006

INTRODUCTION HONDA ACCORD BAXA/MAXA BA XA/MAXA HONDA PRELUDE M6HA The USA built BAXA and the Japan built MAXA and the M6HA transaxle is part of a new generation generatio n of 3 shaft transaxles. The features features that make these units unique are the use of 6 solenoids, 2 pressure switches and NO oneway clutches. This new generation transaxle's transaxle's PCM has a unique solenoid strategy strategy to control shift overlap for upshifts and downshifts. The PCM also requires a full complement of sensors to control shift timing and shift feel. All pertinent information for tear-down and assembly as well as some electrical diagnosis, covering 1997 to 2001 models, has been included in this manual.

No part of any ATSG publication may be reproduced, stored in any retrieval system or transmitted in any form or by any means, including but not limited to electronic, mechanical, photocopying, recording or otherwise, without written permission of Automatic Automatic Transmission Transmission Service Group. Group. This includes all text illustrations, tables and charts. "ATSG would like to thank Honda Motor Co. for the illustrations and information contained in this manual." The information and part numbers contained in this booklet have been carefully compiled from industry sources known for their reliability, but ATSG ATSG does not guarantee its accuracy. accu racy. Copyright © ATSG 2006 DALE ENGLAND

JIM DIAL

FIELD SERVICE S ERVICE CONSULTANT CONSULTANT

TECHNICAL CONSULT CONSULTANT ANT

WAYNE COLONNA

ED KRUSE

TECHNICAL SUPERVISOR


PETER LUBAN PETER LUBAN

GREGORY LIPNICK



JON GLATSTEIN

DAVID CHALKER



JERRY GOTT

MIKE SOUZA



GERALD CAMPBELL

ROLAND ALVAREZ



AUTOMATIC AUTOMA TIC TRANSMISSION TRANSMISSION SERVICE SERVICE GROUP GROUP 18639 S.W S.W.. 107TH 1 07TH AVENUE AVENUE MIAMI, FLORIDA 33157 (305) 670-4161

1

Technical Service Ser vice Information Inform ation HONDA ACCORD BAXA/MAXA BAXA/MAX A HONDA PRELUDE M6HA

2nd GEAR PRESSURE SWITCH

LOCK-UP CONTROL SOLENOID (LUCS)

SHIFT CONTROL SOLENOID "A" (SCS"A")

COUNTERSHAFT SPEED SENSOR

SHIFT CONTROL SOLENOID "B" (SCS"B") BLACK CONNECTOR

SHIFT CONTROL SOLENOID "C" (SCS"C") BROWN CONNECTOR

CLUTCH PRESSURE CONTROL SOLENOID "B" (CPCS"B") BLACK CONNECTOR MAINSHAFT SPEED SENSOR

3rd GEAR PRESSURE SWITCH (Accord Only)

CLUTCH PRESSURE CONTROL SOLENOID "A" (CPCS"A") BROWN CONNECTOR

AUTOMATIC TRANSMISSION SERVICE GROUP

3

Technical Service Information BAXA/MAXA/M6HA CLUTCH APPLICATION CHART

4


Technical Service Information HONDA ACCORD BAXA/MAXA COMPONENT LOCATOR

DATA LINK CONNECTOR (DLC)

POWERTRAIN CONTROL MODULE (PCM)


2ND CLUTCH PRESSURE SWITCH

LOCK-UP CONTROL& SHIFT CONTROL SOLENOID "A" ASSEMBLY

A/T GEAR POSITION SWITCH

MAINSHAFT SPEED SENSOR

SHIFT CONTROL SOLENOID "B" 3RD CLUTCH PRESSURE SWITCH

"A & B" CLUTCH PRESSURE CONTROL SOLENOID ASSEMBLY

SHIFT CONTROL SOLENOID "C"


5

Technical Service Information HONDA PRELUDE M6HA COMPONENT LOCATOR

ENGINE CONTROL MODULE (ECM)

TRANSMISSION CONTROL MODULE (TCM)



VEHICLE SPEED SENSOR



SHIFT CONTROL SOLENOID "B"

"A & B" CLUTCH PRESSURE CONTROL SOLENOID ASSEMBLY

6

SHIFT CONTROL SOLENOID "C"


LOCK-UP CONTROL& SHIFT CONTROL SOLENOID "A" ASSEMBLY

Technical Service Information SOLENOID CONTROL SHIFT CONTROL Shifting is done in relation to throttle demand with the TCM/PCM controlling shift feel through A/T Pressure Control Solenoids "A" and "B". Shift timing is controlled by Shift Control Solenoids "A", "B", and "C" during normal upshifts and downshifts as well as grade logic control. The shift solenoid firing order is different during a shift than it is when the transmission is in gear as shown in the solenoid "ON/OFF" chart below. SHIFT LEVER POSITION P

GEAR POSITION

SHIFT SOLENOID A B C

PARK

OFF

ON

OFF

SHIFTING FROM PARK OR NEUTRAL TO REVERSE

OFF

ON

ON

WHILE IN REVERSE

OFF

ON

OFF

REVERSE INHIBIT

OFF

ON

ON

NEUTRAL

OFF

ON

OFF

ON

ON

ON

OFF

ON

ON

SHIFTING BETWEEN FIRST AND SECOND

ON

ON

ON

WHILE IN SECOND

ON

ON

OFF

SHIFTING BETWEEN SECOND AND THIRD

ON

OFF

OFF

WHILE IN THIRD

ON

OFF

ON

SHIFTING BETWEEN THIRD AND FOURTH

OFF

OFF

ON

WHILE IN FOURTH

OFF

OFF

OFF

2

SECOND

ON

ON

OFF

1

FIRST

OFF

ON

ON

R N

SHIFTING FROM NEUTRAL WHILE IN FIRST

D4

D3

REVERSE INHIBIT CONTROL When reverse is selected while the vehicle is moving at a speed greater than 6 mph (10km/h), the PCM/TCM will command Shift Control Solenoid "B" and "C" "ON" which is a 1st gear command which strokes the reverse CPC valve which blocks the reverse servo and 4th clutch circuits preventing reverse engagement.


7

Technical Service Information SOLENOID CONTROL N O I T A C I L P P A D I O N E L O S E S R E V E R D N L A A E R S T R U E E V N E R O T L A R T U E N M O R F T N E M E G A G N E

8

S C U L " B " S C P C " A " S C P C " C " S C S

F F O F F O

F F O

N O I F T I F S O N A R " T B " N E S O S R C S E V " E A F " F R S O O T C S L A e R d o T M a U e / r n E u N s s e r P r a e G n o i t i s o p r o t c e l e S

N

N


F F O F F O

g n i t a l u d o m N O

" B " S C S

N O

" A " S C S

F F O

e d o M C e r P u C s s e r P r a e R G n o i t i s o p 4 r o D t c e l e S

e r u e s v l s e r a v P d i e n o i n e . L l . o e e v l v S l l a a o V r l v t C n o a u P C C e n a e r M s u r s e s d v n e e r a R P e v e l h h a c V t t f u o l o v e C r f d e i s o S n e g o h u t i t l p l a i a e v u r d o h o b t c m l e h e u t c t h o h t t y l 4 i o b e d f h e t f l o l f o s t r o t u n n o h s o t c i a s i h c c i l i p h h c w i a h p e N w h O e t v s l l s i o v t " a r C n " C P o c d C i s o e i s n h r e l T v o e . e " S t R A f i e " h h t S o : t y t r a n m e s s m i u S

S C U L " B " S C P C " A " S C P C " C " S C S " B E S " R S C S

E V " E A R "

F F O F F O

F F O

F F O

N O

F F O

S C S e d o M E e N r I u s L s e r P r a e R G n o i t i s o p 4 r o D t c e l e S

e r u s s e r p h c t u l c h t 4 . s e e l v h c a t i V w a s l s u i h n a T M . e v d l n a v a e v C l a P V C o e v s r r e e v S e e R h e t h a t i v s e d e k o r o t s m e h c r u i h s e w s r F p F e n O i L d e o t n r e u d t s o i m " C C " P C d i m o o n r e f l o S t f i h S : y r a m m u S

h c " t u N l C O " h t 4 h c t u l C d r 3 h c t i h c w t u S l r C e u d r s s 3 e r P h c t i h c w t u S l C e r u d s n 2 s e r P

h c t u l C d n 2

h c t u l C t s 1


Technical Service Information SOLENOID CONTROL

N O I T A C I L P P A D I O N E L O S R A E G " t s L 1 A " R 4 T D U O E T N L A R T U E N M O R F T N E M E G A G N E


F F O F F O

F F O

F F O

" B " S C S

N O

" A " S C S

F F O

e d o M a e / r n u s s e r P r a e N G n o i t i s o p N r o t c e l e S

N O I T I S N A R T R A E G t s 1 4 D O T L A R T U E N

S C U L " B " S C P C " A " S C P C " C " S C S " B " S C S " A " S C S

F F O F F O

g n i t a l u d o m N O

N O

N O

e d o M C e r P u C s s e r P r t a s e 1 G n o i t i s o p 4 r o D t c e l e S

f o " r e A " t n e e v . c l a e d v d n o a C P m e d C C i s f o P g n e C s i i d r i h p s s c i g e h u h t l w , o p e e t r r l i o u s o b s y e e l h p t r p p d a n o e h c s c t u e d t u l a l r c u e t h d s t o i R 1 t m w A c l d e i e E o n i l n " p G o p c A t a " s o e i s 1 t v h N l c O a v t u 4 d l d i e c D o n t r n s e 1 u l t e o h e r l a S T o . " t r n C o n " o i t a d C i c n e l a r p " u p s a s A e " r h c s P t d u i h o c c l t n t e l u 1 s l o C l S o " t r . t f i A h " n o S c e : v o y l t r a a v m C m u P C S


F F O F F O

F F O

N O

" B " S C S

N O

" A " S C S

F F O

e d o M E e N r I u s L s e r P r t a s e 1 G n o i t i s o p 4 r o D t c e l e S

. e r u s s e r P e n i L o t C P C m o r f " A " e v l a V e t r f i u s h S s e r n P o t e r n i o p L e h o t w n s e s i h c t r i e u w s s s e h c r p i h h c w t u F l F C O t s d 1 e n r u t s i " A " d i o n e l o S t f i h S : y r a m m u S

h c t u l C h t 4

h c t u l C d r 3 h c t i h c w t u S l r C e u d r s s 3 e r P h c t i h c w t u S l C e r u d s n 2 s e r P

h c t u l C d n 2

h c " t u N l C O t " s 1


9


N O I T A C I L P P A D I O N E L O S R A R E A G E " G s d t n 1 2 " 4 D D N A T F I H S P U " d n 2 " O T " t s 1 "

10


F F O F F O

F F O


g n i t a l u d o m g n i t a l u d o m

N O I N T N O I O S N A " " R B B " N T " N S O R S O C A C S E S G " " d A n A " F " N F 2 S O S O C C O S S T t s d e e 1 d o - o M E 4 M C e e r N I D r P u s L s e r P r t a s e 1 G n o i t i s o p 4 r o D t c e l e S


F F O f e o " h

u C s s e r P r d a n e 2 G n o i t i s o p 4 r o D t c e l e S

r e A " t t n e n o v e s c l e a t v d a n l a C u d e P o C d i m . s f o l g i n d e o h c i r i " t u s l p s g B c " e l d u e h v 2 n t p l a o e e t v r l h o d i t i o b o f e n o y h l e n t p l o p o t i a n S o a l h s c o i c t e t l t r u l a n p l c o p u C a t d e s o 1 e h t r t m u s c l l i e o s o s n r e t n r " o P o c A h n c o " c t h t e c v l u i N l h C O a v . w d e " d d e i n o o B r n u l e m " t e o C l v e r S P a l C a v o " t r t o C C P " n o k c d C a C n o b f a e r e e " u r d s i u A s s s " e g r s e s u r P l d i p p h o c h n r c e e t u t l o l u b o l C S c t " . t f s i 1 A h " s S e : r v n y l u r t a a v h m C i c m P h u C w S

R A E G d n 2 4 D

F F O N O

N O

F F O

" B " S C S

N O

" A " S C S

N O

e d o M E e N r I u s L s e r P r d a n e 2 G n o i t i s o p 4 r o D t c e l e S

e v l e a v h t d i a i v o n e l e d o o S m l o e r r t u n s o " s . e C A r p e " r e e u v n s l i s a L e r v o P t C e P h r c C t u f s u l s o e C e r d p " i . s h c C g t " u u e l l v c l p a e d r n V o t 2 b f i s e e h h S h t c t a m i i v o w r s t f s h u c a e r i u h h x s w e s e r F n p F a k o c O t o d h e b c l t n r o u t u l t c n s t i s o 1 " e d e C r " h t n u s t d t i c s o i e n n e " l A o n o " S c t d f i n h a S , e : v y l r a a v m l a m u u S n a M

h c t u l C h t 4

h c t u l C d r 3 h c t i h c w t u S l r C e u d s r 3 s e r P h c t i h c w t u S " l N C e r O u d " s n 2 s e r P

h c " t u N l C O d n " 2

h c t u l C t s 1



N O I T A C I L P P A D I O N E L O S R R A A E E G G " d d r n 3 2 " D 4 N D A T F I H S P U " d r 3 " O T " d n 2 "


F F O N O

N O

F F O

N O

N O

e d o M E e N r I u s L s e r P r d a n e 2 G n o i t i s o p 4 r o D t c e l e S

N O I T I S N A R T R A E G d r 3 O T d n 2 4 D


F F O

g n i t a l u d o m g n i t a l u d o m F F O F F O

N O

e d o M C e r P u C s s e r P r a r e d G 3 n o i t i s o p 4 r o D t c e l e S

e h i t C d P o n n C l o e o o g t n S i k t l c c o a t r a b " n h A o c t C " u e l v . c e r l u a d s c v h n s t 2 e d r i l e P o u c h n t d h e r t c l c t o 3 e u e S l l h n C t n o o r f c f o t o o n n n o t o C t o , t i i B l e a a e c i u u r v d l l s p a o s p e V r m P a t f e e h h i h h t t c s S u t s u l r l o e r h k C t t o e " r d . n t s o B o c " " h m c e i v A " h C l P a w e v l v C , F t o C v F d P a O e C C f d g e o P n n a e C r f h d u c i o t s e s s i g d i i u e " r l p s B g u s " s e u l r e d o i r b p o p r e e n o h e h l c t b t o n u S l t c o f d g i n h n i t S 2 c : a " y . " r a B B m " " e m v e l u a l v S v a v


R A E G d r 3 4 D

F F O F F O

F F O

N O

" B " S C S

F F O

" A " S C S

N O

e d o M E e N r I u s L s e r P r a r e d G 3 n o i t i s o p 4 r o D t c e l e S

e n i L o t e " . r u C s " s e e r v p l a h V c t f u t i l c h S d r i a 3 v s t e s h u c a t i h w s x e d n n a a o " t h C c " t e l v u c l a d V n t 2 f i e h t S h s s e t c k e o n r t s n o c h c d i h n w a , e N l v O a v d e l a n r u u t n s a i " M e C t " h a d i i v o e n d e l o o m S t e f r i u h S s s e : r y r a p m m u S

h c t u l C h t 4

h c " t u N l C O " d r 3 h c t i h c w " t u S l N r C e O u " d s r 3 s e r P h c t i h c w t u S l C e r u d n s s 2 e r P

h c t u l C d n 2

h c t u l C t s 1


11


N O I T A C I L P P A D I O N E L O S R R A A E E G G " d r h t 3 4 " 4 D D N A T F I H S P U " h t 4 " O T " d r 3 "

12


F F O F F O

F F O

N O I N T O I S N A " R B F " F T S O R C A S E G " h A " N t 4 S O O C T S d r e 3 d o M E 4 e N r I D u s L s e r P r a e G n o i t i s o p r o t c e l e S

d n 2

4 D


F F O

g n i t a l u d o m g n i t a l u d o m N O

" B " S C S

F F O

" A " S C S

F F O

e d o M C e r P u C s s e r P r a t e h G 4 n o i t i s o p 4 r o D t c e l e S

e C d h t P i n C o o n o e s t l t o c k a c S l a l i b o r o t h " c n t o u C B . l h c e " e c v t d l r r u u a l 3 s v c s e e d h r i h t t P o 4 t n c e h e e l c o h t t n u S f n l o o l c C o n f r o o t o t i n t n o " a , i o C i c A t l a e " l p r p e u u a v d s l s e o e a h r V t m t s e P f l i h o t h h c r t S u t u n r s l e h c t C o k o e " h . r d c t i s o A h " m e w h c C i v " h P l a w C v B " , o C e F t v F d P l a C O e v f n d o C r e u e P n t d r i u i s C t s f e o s r g i u e l " u d s p i s A s e " e r r g o p d u i b l h o p e c t n e h e t u r l l o o c n b S o d t r g f 3 i n i h t . S " " c a : y A " r " a e A m l v " e m a v l u v S a v


R " A B E " G S C S h t 4 - " 4 A " D S

F F O N O

N O

F F O F F O F F O

C S e d o M E e N r I u s L s e r P r a t e h G 4 n o i t i s o p 4 r o D t c e l e S

e n g i u L l p o t e r e o r b u s e s h e t r o " p t . h c e r C t " u u l s e c s v e l r h a t p 4 k V t s c e l i o f h h b c t i t o S a w s N i v s O t i s h i u s a T h " " . A x e C n " " e a e v v l o l t a a v d v e d t t i f c i o e h n e n S l s o n o e S c k l s o i o r t t h s r c n h o t u c l i c h C e d w r r 3 s F u s e F e r h O P T d h e . c " n t A r u " u t l e s C v . l i e " l v a v C a " l v C P d i a C o u f n n e a o l e o M d i S e s t f h i t h a S i v : y e r a r s m u s e m r u S p

h c " t u N l C O " h t 4 h c t u l C d r 3 h c t i h c w t u S l r C e u d r s s 3 e r P h c t i h c w t u S l C e r u d n s s 2 e r P

h c t u l C d n 2

h c t u l C t s 1


Technical Service Information LOCK-UP CONTROL The Lock-up Solenoid is an 'ON/OFF" solenoid which strokes the lock-up shift valve to turn lock-up "ON". The PCM/TCM controls lock-up apply feel by the use of the A/T Clutch Pressure Control Solenoids acting on the lock-up control and timing valves as soon as the Lock-up Solenoid is turned "ON" providing partial and full lock-up. Accord models attain lock-up in 3rd and 4th gears. Prelude models attain lock-up in 2nd, 3rd and 4th gears.

T N E M E G A D G E N I E L P H P C A T C U C L T C R R A E E T G R d E r V 3 N 4 O D C E U Q R O T


N O

r f e o t e r e " l d " o r e s v u F i n A t A q F g o " " n r e n o C O i l o e v C T l v r l l p e v e u a a s F r v h d u t e i , d s h d i g o t s n n N o n e i t a n e r n l a e , o l P O l o f s l u l i o i S d h o a l S o c d i t l o m e H u o r l o , t h n r t l t n e a C i o n l s t o n n r o C i e S a C a e h l N r P r o e W r r O d f t o u s u : h s n s e c g e l i o r p C s e n P h i r m w h P p c a h t c x u F N i - h c F O w t k E t u c l e . u O d s l o e C v L C e h l e a e n n t h r s t l v t u l h h e t f o o s o r d i t r N d n n t n W . a o n o y O i i , o l o c t l c w a n a d r i o t e t e l l l u n r o d s u a i e S p o g e a p d l m m r o o d n r o e e i u i M E t c h s l m n s t i e e p o h u t e N r p r I C u p a r p s L p T u h . s s t " i e e u k r A v n h c l k P o o " t c a c t v i L e o t u a v l r e l f c d L i i C a a h l t v r e n e h p e d t G 2 h p T s p o i r a n o : u e y g h n v n r e k c n n o l i a c t i t o t o u o c i l m S C s a L C o e p 4 m u h r o D S t t c e l e S

D E I L P P A C C T R A E G h t 4 4 D


N O

" N O R I T E A T C R I E L V P N P A O L C L E U U F "

Q r f R H e o t O C e r T T g l " e d n e " U i o i v B t r L s u n a B t l q C o " g " n u r e n o d C o v e i o l C T l l v r l m p e v e u a a s F r v h d u t e i " , d s h d i o t s N n N o n e O n a e r O n I l e , N o f R T P l o s l l i E O i a S h o T A C o H l S c d i t R I l o e L o u r E o , l n t P h t r t l V e n N P a n C l i s o t o o O A n n r C i e S a C C F a F L e h l r P r e F d f W o E A r r u H U O h o s : t u Q " s n s e c g e i o s R H r l e n P p C h i C r O m w h T T P p c a h U t c x u F N i - h c F O w t k E t u . c u L C l O d s o l e e C e v L C h e l n t h a r e n s t v u l h e " t t l f o h N o s t r o t d F i r O W n I n n F d . a n T i o o y , O o c i o l R A t l c E w n a r a I l i T C o t e t e u d l l R L n r o d s u E P i a P e S p o a p V A d l g e m m r o o n u d L r o e N e i O A i M E t c h s l I m C n s e e t i p t e o h N r E T p r u I u r p p a U R T s L C u h P p . s Q A s - " i t k e e u R " r v B n h c l H k P o o " t c O a T C c t v i e L o t u a v l T L f r e l c i i C U a a h h L l e h t v e t r p C h e d n G 4 T s p t i p o r a o : u e y g - h n v n r e k c n n o l i a c t i t o R t o u o c i l m S C s a L E C o T " e p 4 m u R F h r E F o D S t

t c e l e S

V O N " O H C C E T U U Q L R C O T

H C C C T T U L C

H C C C T T U L C

H C C C T T U L C

H C C C T T U L C


13

Technical Service Information SOLENOID CHECK AND OPERATION LOCK-UP CONTROL AND SHIFT CONTROL SOLENOID "A" OFF

LOCK-UP CONTROL SOLENOID

MODULATING VALVE PRESSURE TO LOCK-UP SHIFT VALVE (spring side)

X BLOCKED 1 4 1

X BLOCKED

solenoid gasket

MODULATING VALVE PRESSURE TO SHIFT VALVE "A"

SHIFT CONTROL SOLENOID "A"

When the Lock-up control Solenoid is OFF, Modulating Pressure is HIGH, which prevents the Lock-up Shift Valve from stroking. When Shift Control Solenoid "A" is OFF, Modulating Pressure is HIGH, which strokes Shift Valve "A."

LOCK-UP CONTROL AND SHIFT CONTROL SOLENOID "A" ON CONNECTED

LOCK-UP CONTROL SOLENOID

MODULATING VALVE PRESSURE TO LOCK-UP SHIFT VALVE (spring side)

X 1 4 1

X

solenoid gasket

MODULATING VALVE PRESSURE TO SHIFT VALVE "A"

SHIFT CONTROL SOLENOID "A" CONNECTED

When the Lock-up control Solenoid is ON, Modulating Pressure is EXHAUSTED, which allows the Lock-up Shift Valve to stroke. When Shift Control Solenoid "A" is ON, Modulating Pressure is EXHAUSTED, which allows Shift Valve "A" to be held to the right by its spring. Copyright © 2002 ATSG

14


Technical Service Information SOLENOID CHECK AND OPERATION SHIFT CONTROL SOLENOID "B" AND "C" OFF

SCS "B" OFF

SCS "C" OFF

(black connector)

(brown connector)

X

X TO SHIFT VALVE "B" AND SERVO CONTROL VALVE

TO SHIFT VALVE "C" AND REVERSE CPC VALVE

CONNECTED

CONNECTED

FROM MODULATOR VALVE


Summary: When Shift Control Solenoid "B" and "C" are OFF, oil from the Modulating valve is applied to stroke the valves that the solenoids control.

SHIFT CONTROL SOLENOID "B" AND "C" ON

SCS "B" ON

SCS "C" ON

(black connector)

(brown connector)

CONNECTED

CONNECTED

X

X FROM SHIFT VALVE "B" AND SERVO CONTROL VALVE


FROM SHIFT VALVE "C" AND REVERSE CPC VALVE


Summary: When Shift Control Solenoid "B" and "C" are ON, oil from the Modulating valve is blocked at the end of the solenoid. The valves, that the solenoids control, are connected to the exhaust at the top of the solenoid. Copyright © 2002 ATSG


15

Technical Service Information CLUTCH PRESSURE CONTROL SOLENOID AND VALVE OPERATION "OFF" Pressure port

CLUTCH PRESSURE CONTROL SOLENOID AND VALVE "A"

CLUTCH PRESSURE CONTROL SOLENOIDS "OFF"

X X To CPC valve "A" Reverse CPC valve Shift valve "C"

From Modulating Valve ( Solenoid regulator)

CLUTCH PRESSURE CONTROL SOLENOID AND VALVE "B"

To CPC valve "B" Shift valve "C" Shift valve "D"

Clutch Pressure Control Solenoid and Valve "A" supply modulating pressure to CPC valve "A", Reverse CPC valve and Shift valve "C" when "OFF." Clutch Pressure Control Solenoid and Valve "B" shut off the supply of modulating pressure to CPC valve

CLUTCH PRESSURE CONTROL SOLENOID AND VALVE OPERATION "ON" Pressure port

CLUTCH PRESSURE CONTROL SOLENOID AND VALVE "A"

CLUTCH PRESSURE CONTROL SOLENOIDS "ON"

X X From Modulating Valve ( Solenoid regulator)

CLUTCH PRESSURE CONTROL SOLENOID AND VALVE "B"

To CPC valve "A" Reverse CPC valve Shift valve "C"

To CPC valve "B" Shift valve "C" Shift valve "D"

Clutch Pressure Control Solenoid and Valve "A" shut off the supply of modulating pressure to CPC valve "A", Reverse CPC valve and Shift valve "C" when "ON." Clutch Pressure Control Solenoid and Valve "B" supply modulating pressure to CPC valve "B", Shift valve "C" and Shift Valve "D" when "ON." Copyright © 2002 ATSG

16


Technical Service Information SOLENOID CHECK AND OPERATION CLUTCH PRESSURE CONTROL SOLENOID VALVES "A" AND "B" OFF

CLUTCH PRESSURE CONTROL SOLENOID VALVE "A" OFF

AIR WILL EXHAUST THRU THIS HOLE

APPLY AIR PRESSURE HERE

CLUTCH PRESSURE CONTROL SOLENOID VALVE "B" OFF

AIR IS BLOCKED TO THIS HOLE

SOLENOID CHECK AND OPERATION CLUTCH PRESSURE CONTROL SOLENOID VALVES "A" AND "B" ON

CLUTCH PRESSURE CONTROL SOLENOID VALVE "A" ON

AIR IS BLOCKED TO THIS HOLE

APPLY AIR PRESSURE HERE

CLUTCH PRESSURE CONTROL SOLENOID VALVE "B" ON


AIR WILL EXHAUST THRU THIS HOLE

Copyright © 2002 ATSG

17

Technical Service Information PRESSURE SWITCH CHECK AND OPERATION 2nd OR 3rd GEAR PRESSURE SWITCH "OFF"

0.L





mV

mA A

V RPM

mA A

V

OFF

V  A

mA

COM

RPM

NO PRESSURE APPLIED SUMMARY: THE 2nd AND 3rd GEAR PRESSURE SWITCHES ARE "OPEN" WITH NO PRESSURE APPLIED

2nd OR 3rd GEAR PRESSURE SWITCH "ON"

.001 mV



CLOSED AT APPROXIMATLY 40 psi.



mA A

V RPM

mA A

V

OFF

V  A

mA

COM

RPM

40-100 psi. OF PRESSURE APPLIED SUMMARY: THE 2nd AND 3rd GEAR PRESSURE SWITCHES "CLOSE" WHEN 40-100 psi. OF PRESSURE IS APPLIED TO THE SWITCH. Copyright © 2002 ATSG

18


Technical Service Information SOLENOID CONTROL CLUTCH PRESSURE CONTROL The PCM/TCM regulates the A/T Clutch Pressure Control Solenoids "A " and "B" thereby controlling all clutch apply pressure via the clutch pressure control (CPC) valves as well as lock-up apply pressure.

SEQUENTIAL SPORTSHIFT MODE (PRELUDE ONLY) When in the D4 position, while sliding the shift lever to the Sequential Sportshift Mode position, the driver can use the shift lever to upshift and downshift similar to the operation of a manual transmission. Pushing the shift lever towards the "+" indicator results in an upshift to the next higher gear. Pushing the shift lever towards the "-" indicator results in a downshift to the next lower gear. The number of the selected gear is displayed in the shift indicator next to the D4 indicator as seen below. The transmission does not automatically shift, it remains in the selected gear position. The transmission will upshift or downshift automatically under the following conditions: 1. Downshift from 4th to 3rd when more power is required such as when climbing a hill. 2. Provide engine braking when on a steep incline. 3. Downshift to 1st gear when the vehicle comes to a stop. 4. Under proper conditions, the PCM/TCM will allow a downshift to avoid engine overreving. 5. A coast downshift will occur to a lower gear when vehicle speed drops low enough to require the downshift signal at which time the shift indicator will flash several times to indicate a lower gear position.

2

SPORTSHIFT MODE SHIFT INDICATOR


19

Technical Service Information GRADE LOGIC CONTROL SYSTEM The PCM/TCM compares actual driving conditions with memorized driving conditions, by the use of a Fuzzy Logic System and input from various sensors to control shifting while the vehicle is ascending or descending a hill, or during speed reduction.

ASCENDING CONTROL When the computer determines that the vehicle is climbing a hill in the D4 or D3 positions, the Grade Logic System extends the engagement area of 2nd and 3rd gear to prevent the transmission from frequently shifting between 2nd and 3rd gears, and between 3rd and 4th gears in order to shift busyness and to also have adequate power. Shift schedules stored in the computer between 2nd and 3rd gears, and between 3rd and 4th gears, enable the computer's Fuzzy Logic to automatically select the most suitable gear according to how steep the hill is as shown in the graph below.

20


Technical Service Information GRADE LOGIC CONTROL SYSTEM DESCENDING CONTROL When the computer determines that the vehicle is going down a hill in D4 or D3 positions, the closed throttle upshift speed from 3rd to 4th gear and from 2nd to 3rd becomes faster than the set speed for flat road driving to widen the 3rd and 2nd gear driving area. This in conjunction with engine braking from deceleration lock-up, achieves smooth driving when the vehicle is descending. There a two descending modes with different 3rd and 2nd gear driving areas depending on the gradient encountered as seen in the graph below.

DECELERATION CONTROL When the vehicle turns a corner and needs to decelerate first and then accelerate, the computer sets the data for deceleration control to reduce the number of times the transmission shifts. When the vehicle is decelerating from speeds above 27 mph (43 km/h), the computer shifts the transmission from 4th to 2nd gear earlier than normal to cope with upcoming acceleration.

IMPORTANT NOTE: NEVER ROAD TEST A VEHICLE EQUIPPED WITH GRADE LOGIC CONTROL ON A LIFT! THE VEHICLE WILL SHIFT HUNT AND/OR SKIP A GEAR, THE GRADE CONTROL SYSTEM BECOMES CONFUSED WITH THE WHEELS OFF THE GROUND AND WILL COMMAND THE SHIFT SOLENOIDS IN SUCH A MANNER THAT IT WILL APPEAR TO BE A TRANSMISSION MALFUNCTION!


21

Technical Service Information CODE RETRIEVAL PROCEDURE (ACCORD) RETRIEVE CODES When the PCM/TCM senses an abnormality, the "D4" Lamp will begin to flash steadily as seen below.

D4 LAMP FLASHES WHEN A FAULT IS PRESENT

MIL LAMP

In some instances the "MIL" Lamp will also be illuminated, check for those related codes first. Connect an OBD-II scan tool conforming to SAE J1978, to the Data Link Connector (DLC), as shown below, and check for codes in the generic category, and the transmission control system as well as any other system codes that may be pertinent. Also check for recorded freeze frame information and refer to the code chart shown beginning on page15.

OBD-II SCAN TOOL


22


Technical Service Information CODE CLEARING PROCEDURE (ACCORD) CLEAR CODES Reset the PCM/TCM memory with the scan tool or remove the 7.5 AMP BACK-UP FUSE from the passenger side under dash fuse box as shown below. IMPORTANT NOTE: Remember to obtain the radio anti-theft codes so they may reinstalled in the event they are lost during the code clearing process.

7.5 AMP BACK-UP FUSE

REMOVE THIS FUSE TO CLEAR CODES

PASSENGER SIDE UNDER DASH FUSE BOX


23

Technical Service Information CODE RETRIEVAL PROCEDURE (PRELUDE) RETRIEVE CODES When the PCM/TCM senses an abnormality, the "D4" Lamp will begin to flash steadily as seen below. The Prelude offers two methods of code retrieval: 1. Connect an OBD-II compliant scan tool to the 16 pin Data Link Connector (DLC) shown, below left. 2. Locate the 2 pin Service Check Connector, shown below right, and jump the SCS connector with the tool shown or a suitable substitute and read the "flash" codes shown in () found in the code chart beginning on page 15.

D4 LAMP FLASHES STEADILY

16 PIN DATA LINK CONNECTOR FOR SCAN TOOL USE

2 PIN SERVICE CHECK CONNECTOR

JUMP SERVICE CONNECTOR FOR FLASH CODES

24


Technical Service Information CODE RETRIEVAL PROCEDURE (PRELUDE) The "flash" code format is shown directly below. Single digit codes are indicated by individual short flashes. Two digit codes are indicated by long flashes followed by short flashes.

2 SHORT FLASHES DTC 2 1 LONG FLASH

5 SHORT FLASHES

DTC 15

CODE CLEARING PROCEDURE (PRELUDE) CLEAR CODES Reset the PCM/TCM memory with the scan tool or remove the 7.5 AMP BACK-UP FUSE from the under hood fuse box for at least 10 seconds as shown below. IMPORTANT NOTE: Remember to obtain the radio anti-theft codes so they may reinstalled in the event they are lost during the code clearing process. REMOVE 7.5 AMP BACK-UP FUSE TO CLEAR CODES 7.5

UNDER HOOD FUSE BOX


25

Technical Service Information DIAGNOSTIC TROUBLE CODE DEFINITION CHART *DTC

D4 LAMP MIL LAMP

P0715 (15) FLASHES P0720 FLASHES (9)

P0725 (11)

P0730 (41)

OFF

ON

ON

OFF

SYMPTOM ·Erratic Shifting

ON ·Lock-up Clutch Does Not Apply ·Lock-up Clutch Does Not Disengage

P0740 (40)

OFF

P0753 FLASHES (7) P0758 FLASHES (8)

·Faulty Mainshaft Speed Sensor or Circuit ·Faulty Countershaft Speed Sensor or Circuit

·Erratic Shifting ·No 4th Gear ·No Lock-up ·No Speedometer (Accord Only) ·No Lock-up (Prelude Only) ·Loss of Engine RPM Signal ·Faulty Distributor/Ignition Coil ·Wire or Connection ·Faulty Ignition Coil ·Failure to shift through the gears ·Skipped Shifts

OFF

POSSIBLE CAUSE

ON

·Mechanically Bad Shift Solenoids ·Mechanically Bad A/T Pressure ·Control Solenoids ·Low Clutch Pressure ·Internal Component Slipping ·Mechanically Bad Lock-up ·Control Solenoid ·Mechanically Bad A/T Pressure ·Control Solenoids ·Lock-up Shift, Control or Timing Valve Problems ·Faulty Torque Converter ·Faulty Speed Sensor

ON

·Does Not Shift, Stuck in 4th Gear ·Electrically Bad Shift Solenoid 'A' ·Shift Solenoid "A" Circuit Fault ·Fails to Shift to 4th Gear ·Erratic Shifting

ON

·3rd Gear Starts ·Fails to Shift to 1st or 2nd Gear ·Erratic Shifting

P0763 FLASHES (22)

ON

P0780 FLASHES (45)

ON

·Electrically Bad Shift Solenoid 'B' ·Shift Solenoid "B" Circuit Fault

·Electrically Bad Shift Solenoid 'C' ·Shift Solenoid "C" Circuit Fault ·Faulty 2nd Clutch Pressure Switch ·Faulty 3rd Clutch Pressure Switch (Accord Only) ·Incorrect Gear Ratio ·Mechanical Fault with Shift ·Mechanical Problem in Hydraulic Solenoid A, B or C System ·Mechanical Fault with A/T Pressure Control Solenoid A or B ·Internal Hydraulic Leak

·Late Shift From N to D or N to R ·Excessive Shock or Flare on 1-2, 2-3 or 3-4 Shift ·Excessive Shock or Flare on 2-1, 3-2 or 4-3 Shift

*DTC's in parentheses is the code the D4 Lamp will flash when the 2 pin Service Connector is jumped (Prelude Only), or a Scan Tool capable of displaying flash codes is connected to the 16 pin DLC

26



D4 LAMP MIL LAMP

SYMPTOM

POSSIBLE CAUSE

·Lock-up Does Not Apply P01655 FLASHES (37)**

ON

P01705 FLASHES (5)

ON

P01706 (6)

OFF

P01709 FLASHES (24)

P01738 (25)

P01739 (26)

OFF

·Short or Open in SEAF Wire Between TCM Terminal B18 and ECM ·Short or Open in SEFA Wire Between TCM Terminal B19 and ECM ·Faulty ECM ·A/T Gear Position Switch Circuit ·Erratic Shifts Fault ·Shift Quadrant Indicator Lamps Do Not Indicate Correct Gear Shift ·Faulty A/T Gear Position Switch Position ·Shift Lever Does Not Operate Properly

OFF

·Erratic Shifts ·Shift Quadrant Indicator Lamps Do Not Indicate Correct Gear Shift Position ·Shift Lever Does Not Operate Properly ·Transmission Does Not Shift Into Sequential Sportshift Mode (Prelude Only)

OFF

·Slide, Bump On The 1-2 Shift ·Flare On The 1-2 Shift

ON

·Slide, Bump On The 2-3 Shift ·Flare On The 2-3 Shift OFF

P01750 FLASHES (46)

P01751 FLASHES (47)

OFF

ON

·Incorrect Gear Ratio ·Transmission Slipping ·Incorrect Gear Ratio ·Transmission Slipping

ON

·A/T Gear Position Switch Circuit Fault ·Faulty A/T Gear Position Switch

·Mode Switch Circuit Faults ·Faulty Mode Switch

·2nd Clutch Pressure Switch Circuit Failure ·Faulty 2nd Clutch Pressure Switch ·3rd Clutch Pressure Switch Circuit Failure ·Faulty 3rd Clutch Pressure Switch ·Mechanical Fault with A/T Pressure Control Solenoid A or B ·Internal Hydraulic Leak ·Mechanical Fault with A/T Pressure Control Solenoid A or B ·Mechanical Fault with Shift Solenoid 'B' ·Internal Hydraulic Leak

*DTC's in parentheses is the code the D4 Lamp will flash when the 2 pin Service Connector is jumped (Prelude Only), or a Scan Tool capable of displaying flash codes is connected to the 16 pin DLC **The D4 Indicator Lamp cannot flash code (37) even when the S ervice Check Connector is jumped.


27


D4 LAMP MIL LAMP ON

P01768 FLASHES (16)

ON

P01790 FLASHES (3) P01791 FLASHES (4)

POSSIBLE CAUSE

·Lock-up Does Not Apply

P01753 FLASHES (1)

P01773 FLASHES (23)

SYMPTOM

ON

·Short or Open in Lock-up Solenoid Circuit ·Faulty Lock-up Solenoid ·A/T Clutch Pressure Control ·Excessive Shock or Flares on Solenoid 'A' Circuit Fault Shifts ·Lock-up Clutch Does Not Operate ·Faulty A/T Clutch Pressure Control Solenoid 'A' Smoothly ·Lock-up Clutch does Not Apply ·Excessive Shock or Flares on Shifts ·Lock-up Clutch Does Not Operate Smoothly ·Lock-up Clutch does Not Apply ·Lock-up Clutch Does Not Apply

ON

ON

·Lock-up Clutch Does Not Apply (Prelude Only)

·A/T Clutch Pressure Control Solenoid 'A' Circuit Fault ·Faulty A/T Clutch Pressure Control Solenoid 'A' ·Throttle Position Sensor Circuit Fault ·Faulty Throttle position Sensor ·Vehicle Speed Sensor Circuit Fault ·Faulty Vehicle Speed Sensor

*DTC's in parentheses is the code the D4 Lamp will flash when the 2 pin Service Connector is jumped (Prelude Only), or a Scan Tool capable of displaying flash codes is connected to the 16 pin DLC

28


Technical Service Information TCM CIRCUIT DIAGRAM AND TERMINAL LOCATIONS (ACCORD)

BATTERY

#42 50 AMP FUSE (UNDER HOOD FUSE BOX)

IGNITION SWITCH

#1 15 AMP FUSE (DRIVER UNDER DASH FUSE BOX)

PGM-FI MAIN RELAY

B17

A/T CLUTCH PRESSURE CONTROL SOLENOID 'A'

B8


B10 #46 15 AMP FUSE (UNDER HOOD FUSE BOX)

B8 B1

B25

A/T CLUTCH PRESSURE CONTROL SOLENOID 'B'

B9

#13 7.5 AMP FUSE (PASSENGER UNDER DASH FUSE BOX)

B21

B18

C28 C27 C18 PGM-FI CONTROL UNIT

THROTTLE POSITION SENSOR

ENGINE COOLANT TEMPERATURE SENSOR

D7 SHIFT SOLENOID 'A'

C26

D2 SHIFT SOLENOID 'B'

DATA LINK CONNECTOR

A10 D3

BRAKE SWITCH B+

SHIFT SOLENOID 'C'

A32

BRAKE LAMPS B20

D1 LOCK-UP SOLENOID

B22

D5

SOLENOID POWER SUPPLY

TRANSMISSION CONTROL MODULE D11

A9


INSTRUMENT CLUSTER D12 A/T GEAR POSITION INDICATOR P

R

D10

N

D3

2


1 D16

MULTIPLEX CONTROL UNIT (DRIVERS)

A28 P R

TRANSMISSION RANGE SWITCH

D6

N

B14

D4


D9

D3

D8

2

D14

1

B24

D15

3RD CLUTCH PRESSURE SWITCH

D13 D4 INDICATOR LAMP D4

CRUISE CONTROL UNIT

A5

A14

PCM CONNECTOR TERMINAL LOCATIONS 2 3 4

5 6

8 9 10

1213141516171819 20 21

252627

282930

32 PIN

23 24 32

1

2

3 4 5

7 8

9 10 11 121314

161718

19 20

2122

232425

25 PIN

1 2 3

5 6 7

8 9 10 1

1314 15 161718 192021 25

262728

31 PIN


29 30

2 3

5

6 7 8 9 10 11 12 131415

16

16 PIN

29

Technical Service Information TCM CIRCUIT DIAGRAM AND TERMINAL LOCATIONS (PRELUDE)



IGNITION SWITCH

#14 15 AMP FUSE (UNDER DASH FUSE BOX)

A12

BATTERY

B1

A25

A/T PRESSURE CONTROL SOLENOID 'A'

#43 7.5 AMP FUSE (UNDER HOOD FUSE BOX)

BACK-UP B+

A23 B21

B20

5 VOLT REFERENCE

B4

) M C TPS 5 VOLT SUPPLY E ( TPS SIGNAL E L U TPS GROUND D O M L O SEAF TRANSMISSION DATA OUTPUT R T SEFA PGM-FI DATA INPUT N O C VSS INPUT E N I G N E

B11 THROTTLE POSITION SENSOR

A/T PRESSURE CONTROL SOLENOID 'B'


B22

B7 B18

A3

B19 B5

SHIFT SOLENOID 'A'

VEHICLE SPEED SENSOR

GROUND

A13

GROUND

A26

GROUND

A14

A2 SHIFT SOLENOID 'B'

A16 SHIFT INDICATOR A21

TRANSMISSION CONTROL MODULE (TCM)

SHIFT SOLENOID 'C'

A20 A19

A/T GEAR POSITION INDICATOR

P

R

N

D3

2

A15 LOCK-UP SOLENOID

1

B10 P

A10

R


A11

N

A4

D4

A9

D3

B17 B9

A8

2


A7

1

A6 B8 D4 INDICATOR LAMP D4

A17

A22

MULTIPLEX CONTROL UNIT

A5

IGNITION COIL

MODE SWITCH B13

BRAKE SWITCH

B12

T-MODE SWITCH BRAKE LAMPS

B16 SHIFT SWITCH

B15 B14


TCM CONNECTOR TERMINAL LOCATIONS

4 5 7 8 9 10 11 2 3 4 5 6 7 8 9 10 11 12 13 1 14 15 16 17 19 20 21 22 23 25 26 12 13 14 15 16 17 18 19 20 21 22 26 PIN

30

22 PIN


Technical Service Information TROUBLESHOOTING GUIDE PROBABLE CAUSE LIST ELECTRONIC DEVICE FAMILY

TORQUE CONVERTER FAMILY

TRANSMISSION FAMILY

13

3rd clutch pressure switch defective (ACCORD ONLY)

HYDRAULIC CONTROL FAMILY


31

Technical Service Information TROUBLESHOOTING GUIDE

SYMPTOM

CHECK THESE ITEMS ON THE CHECK THESE ITEMS PROBABLE CAUSE LIST ON THE NOTES LIST

5, 13, G, J, P, Q, g, h

32


Technical Service Information TROUBLESHOOTING GUIDE PROBABLE CAUSE LIST ELECTRONIC DEVICE FAMILY

TORQUE CONVERTER FAMILY

TRANSMISSION FAMILY

13

3rd clutch pressure switch defective (ACCORD ONLY)

HYDRAULIC CONTROL FAMILY


33

Technical Service Information TROUBLESHOOTING GUIDE NOTES Flush transmission cooler

34


Technical Service Information A/T GEAR POSITION SWITCH

1

CONNECTOR VIEW OF A/T GEAR POSITION SWITCH

2

3

4 5 6 7 8

9 10

BATTERY

A/T GEAR POSITION SWITCH CONTINUITY CHECK CHART TERMINAL

1

2

3

4

5

6

7

8

9

10

GEAR POSITION P R N D4 D3 2 1


35

Technical Service Information

OIL PRESSURE CHART ACCORD BAXA/PRELUDE M6HA SELECTOR LEVER

GEAR

POSITION

N or P 1 2

D3 or D4 D4 R

N or P

PRESSURE

PRESSURE

LINE (A)

IN

CONDITIONS

PORT

PSI

120-130

ENGINE @ 2000 RPM

FIRST 1ST CLUTCH (B) ENGINE @ 2000 RPM, WHEELS FREE SECOND 2ND CLUTCH (C) ENGINE @ 2000 RPM, WHEELS FREE THIRD

120-130 120-130

3RD CLUTCH (D) ENGINE @ 2000 RPM, WHEELS FREE

120-130

FOURTH 4TH CLUTCH (E) ENGINE @ 2000 RPM, WHEELS FREE REVERSE 4TH CLUTCH (E) ENGINE @ 2000 RPM, WHEELS FREE

120-130 120-130

2ND CLUTCH PRESSURE (MARKED WITH A "C")

1ST CLUTCH PRESSURE (MARKED WITH A "B")

4TH CLUTCH PRESSURE (MARKED WITH AN "E")

TCC/SHIFT SOLENOID "A" ASSEMBLY

3RD CLUTCH PRESSURE (MARKED WITH A "D")

LINE PRESSURE (MARKED WITH AN "A")

36



Technical Service Information FLUID LEVEL & CAPACITY

NOTE: Use of a fluid other than the recommended fluid may cause shift quality concerns. If this is so, a friction modifier added to this fluid may be necessary.


37

Technical Service Information TRANSMISSION REMOVAL

38



(PRELUDE ONLY)

NOTE: Accords will have a 3rd Clutch Pressure Switch to disconnect as well.


39


40




41


42


Technical Service Information TRANSMISSION DISASSEMBLY END COVER & IDLER GEARS ACCORD BAXA


43

Technical Service Information TRANSMISSION DISASSEMBLY END COVER & IDLER GEARS PRELUDE M6HA

44


Technical Service Information TRANSMISSION DISASSEMBLY END COVER & IDLER GEARS PRELUDE M6HA LEGEND


45

Technical Service Information TRANSMISSION DISASSEMBLY TRANSMISSION HOUSING ACCORD BAXA

46


Technical Service Ser vice Information Inform ation TRANSMISSION DISASSEMBLY TRANSMISSION HOUSING PRELUDE M6HA FEED PIPES CONTAIN FILTER SCREENS


47

Technical Service Ser vice Information Inform ation TRANSMISSION DISASSEMBLY TRANSMISSION HOUSING PRELUDE M6HA LEGEND

48


Technical Service Ser vice Information Inform ation TRANSMISSION DISASSEMBLY TRANSMISSION HOUSING REMOV REMOVAL AL


49

Technical Service Information TRANSMISSION DISASSEMBLY VALVE BODY

ACCORD BAXA

50


Technical Service Information TRANSMISSION DISASSEMBLY VALVE BODY PRELUDE M6HA


51

Technical Service Information TRANSMISSION DISASSEMBLY VALVE BODY PRELUDE M6HA LEGEND

52


Technical Service Information VALVE BODY DISASSEMBLY, INSPECTION & REASSEMBLY ACCORD BAXA & PRELUDE M6HA


53

Technical Service Information VALVE BODY DISASSEMBLY, INSPECTION & REASSEMBLY ACCORD BAXA & PRELUDE M6HA PUMP CLEARANCE

54


Technical Service Information VALVE BODY DISASSEMBLY, INSPECTION & REASSEMBLY ACCORD BAXA & PRELUDE M6HA MAIN VALVE BODY


55

Technical Service Information VALVE BODY DISASSEMBLY, INSPECTION & REASSEMBLY ACCORD BAXA & PRELUDE M6HA MAIN VALVE BODY

No.

Standard (New) mm (in.)

Spring Wire Diameter

O.D.

Free Length

No. of Coils

42.9 (1.689)

14.2

63.0 (2.480)

22.4

1

Lock-up Control Valve Spring

0.7 (0.028)

2

Lock-up Shift Valve Spring

0.9 (0.035)

6.6 (0.260) 7.6 (0.299)

3

Shift Valve E Spring

0.7 (0.028)

6.6 (0.260)

32.2 (1.268)

13.4

4

Shift Valve D Spring

0.7 (0.028)

6.6 (0.260)

35.7 (1.406)

17.2

5

Shift Valve C Spring

0.8 (0.031)

6.6 (0.260)

49.1 (1.933)

21.7

6

Modulator Valve Spring

1.6 (0.063)

10.4 (0.409)

33.5 (1.319)

9.8

7

Reverse CPC Valve Spring

0.7 (0.028)

6.1 (0.240)

17.8 (0.701)

7.9

8

Servo Control Valve Spring

0.7 (0.028)

6.6 (0.260)

35.7 (1.406)

17.2

9

Converter Check Valve Spring

1.1 (0.043)

8.4 (0.331)

38.2 (1.504)

14.0

10

Cooler Check Valve Spring

0.6 (0.024)

5.8 (0.228)

14.5 (0.571)

6.8

56


Technical Service Information VALVE BODY DISASSEMBLY, INSPECTION & REASSEMBLY ACCORD BAXA & PRELUDE M6HA REGULATOR VALVE BODY

MAKE CERTAIN THIS ORIFICE IS CLEAR

No.

Spring

Standard (New) mm (in.) Wire Diameter

O.D.

Free Length

No. of Coils

1

Regulator Valve B Spring

1.6 (0.063)

9.2 (0.362)

44.0 (1.732)

14.0

2

Regulator Valve A Spring

1.9 (0.075)

14.7 (0.579)

77.4 (3.047)

15.2

3

Stator Reaction Spring

4.5 (0.177)

35.4 (1.394)

30.3 (1.193)

1.92

4

Relief Valve Spring

1.9 (0.035)

6.6 (0.260)

39.8 (1.567)

20.4

5

Lock-up Timing Valve Spring

0.65 (0.026)

6.6 (0.260)

34.8 (1.370)

15.6


57

Technical Service Information VALVE BODY DISASSEMBLY, INSPECTION & REASSEMBLY ACCORD BAXA & PRELUDE M6HA SERVO VALVE BODY

No.



O.D.

Free Length

No. of Coils

1

Shift Valve B Spring

0.8 (0.031)

7.1 (0.280)

40.4 (1.591)

16.9

2

Shift Valve A Spring

0.8 (0.031)

7.1 (0.280)

40.4 (1.591)

16.9

3

CPC Valve A Spring

0.7 (0.028)

6.1 (0.240)

17.8 (0.701)

7.9

4

CPC Valve B Spring

0.7 (0.028)

6.1 (0.240)

17.8 (0.701)

7.9

5

3rd Accumulator Spring (ACCORD)

3.8 (0.150)

19.6 (0.772)

59.8 (2.354)

7.8

6

3rd Accumulator Spring (PRELUDE)

3.5 (0.138)

19.6 (0.772)

61.7 (2.429)

9.6

7

4th Accumulator Spring (ACCORD)

3.8 (0.150)

19.6 (0.772)

59.8 (2.354)

7.8

8

4th Accumulator Spring (PRELUDE)

3.5 (0.138)

19.6 (0.772)

61.7 (2.429)

9.6

58


Technical Service Information VALVE BODY DISASSEMBLY, INSPECTION & REASSEMBLY ACCORD BAXA ACCUMULATOR VALVE BODY

No.



O.D.

Free Length

1

1st Accumulator Spring B

2.5 (0.098)

12.8 (0.504)

49.5 (1.949)

No. of Coils 8.5

2

1st Accumulator Spring A

2.6 (0.102)

19.6 (0.772)

69.7 (2.744)

10.8

3

2nd Accumulator Spring B

2.7 (0.106)

14.8 (0.583)

51.0 (2.008)

9.6

4

2nd Accumulator Spring A

2.6 (0.102)

21.6 (0.850)

73.2 (2.882)

10.0


59

Technical Service Information VALVE BODY DISASSEMBLY, INSPECTION & REASSEMBLY PRELUDE M6HA ACCUMULATOR VALVE BODY

No.

Spring

Standard (New) mm (in.) Wire Diameter 3.5 (0.138)

O.D. 19.6 (0.772)

Free Length 61.7 (2.429)

No. of Coils 9.6

1

1st Accumulator Spring

2

2nd Accumulator Spring B

2.6 (0.102)

14.4 (0.567)

51.0 (2.008)

11.0

3

2nd Accumulator Spring A

2.8 (0.110)

21.6 (0.850)

68.2 (2.685)

8.9

60


Technical Service Information DISASSEMBLY, INSPECTION & REASSEMBLY ACCORD BAXA & PRELUDE M6HA MAINSHAFT

IDLER GEAR

LUBRICATION PITOT FLANGE

2000-01 TRANSMISSION

ACCORD

HOUSING

ONLY

BEARING


61

Technical Service Information DISASSEMBLY, INSPECTION & REASSEMBLY ACCORD BAXA & PRELUDE M6HA MAINSHAFT CLEARANCE

62


Technical Service Information DISASSEMBLY, INSPECTION & REASSEMBLY ACCORD BAXA & PRELUDE M6HA COUNTERSHAFT


63

Technical Service Information DISASSEMBLY, INSPECTION & REASSEMBLY ACCORD BAXA & PRELUDE M6HA SECONDARY SHAFT

64


Technical Service Information DISASSEMBLY, INSPECTION & REASSEMBLY ACCORD BAXA & PRELUDE M6HA

SECONDARY SHAFT CLEARANCE


65

Technical Service Information DISASSEMBLY, INSPECTION & REASSEMBLY ACCORD BAXA & PRELUDE M6HA SECONDARY SHAFT CLEARANCE

No. 1 2 3 4 5 6 7

Part No. (Accord) 90406-POZ-000 90407-POZ-000 90408-POZ-000 90409-POZ-000 90410-POZ-000 90411-POZ-000 90412-POZ-000

Part No. (Prelude) 90406-P6H-000 90407-P6H-000 90408-P6H-000 90409-P6H-000 90410-P6H-000 90411-P6H-000 90412-P6H-000

Thickness 4.90mm (0.193 in) 4.95mm (0.195 in) 5.00mm (0.197 in) 5.05mm (0.199 in) 5.10mm (0.201 in) 5.15mm (0.203 in) 5.20mm (0.205 in)

NOTE: The chart above contains the part numbers for the 37x55mm thrust shim for both the ACCORD and the PRELUDE. Be sure to order the correct thrust shim for the application you are working on.

66


Technical Service Information DISASSEMBLY, INSPECTION & REASSEMBLY ACCORD BAXA & PRELUDE M6HA 1ST/2ND CLUTCH ASSEMBLIES

1.6mm (0.063 in.) PRELUDE w/6 Frictions 2.3mm (0.091 in.) ACCORD w/5 Frictions

The 1st clutch piston does NOT use a reed valve

The 2nd clutch piston does NOT use a reed valve


67

Technical Service Information DISASSEMBLY, INSPECTION & REASSEMBLY ACCORD BAXA & PRELUDE M6HA

3RD/4TH CLUTCH ASSEMBLIES

The 3rd clutch piston DOES use a reed valve

The 4th clutch piston DOES use a reed valve

68


Technical Service Information DISASSEMBLY, INSPECTION & REASSEMBLY ACCORD BAXA & PRELUDE M6HA CLUTCH DRUM ASSEMBLIES


69


70




71


5. Reverse disassembly procedure for assembly.

72



CLUTCH 1st 2nd (Prelude) 2nd (Accord) 3rd 4th

SERVICE LIMIT 1.15 - 1.35 mm (0.045 - 0.053 in.) 1.0 - 1.2 mm (0.039 - 0.047 in.) 0.7 - 0.9 mm (0.028 - 0.035 in.) 0.6 - 0.8 mm (0.024 - 0.031 in.) 0.4 - 0.6 mm (0.016 - 0.024 in.)


73


74


Technical Service Information DISASSEMBLY, INSPECTION & REASSEMBLY ACCORD BAXA & PRELUDE M6HA DIFFERENTIAL COMPONENTS

BACKLASH INSPECTION


75

Technical Service Information DISASSEMBLY, INSPECTION & REASSEMBLY ACCORD BAXA & PRELUDE M6HA DIFFERENTIAL BEARING REPLACEMENT

76

DIFFERENTIAL CARRIER REPLACEMENT


Technical Service Information DISASSEMBLY, INSPECTION & REASSEMBLY ACCORD BAXA & PRELUDE M6HA DIFFERENTIAL TAPERED ROLLER BEARING PRELOAD ADJUSTMENT


77

Technical Service Information DISASSEMBLY, INSPECTION & REASSEMBLY ACCORD BAXA & PRELUDE M6HA DIFFERENTIAL

78


Technical Service Information DISASSEMBLY, INSPECTION & REASSEMBLY ACCORD BAXA & PRELUDE M6HA DIFFERENTIAL TAPERED ROLLER BEARING OUTER RACE


79

Technical Service Information DISASSEMBLY, INSPECTION & REASSEMBLY ACCORD BAXA & PRELUDE M6HA AXLE SEALS

80


Technical Service Information DISASSEMBLY, INSPECTION & REASSEMBLY ACCORD BAXA & PRELUDE M6HA TRANSMISSION CASE & HOUSING BEARINGS


81


82



NOTE: After bearings are installed, make certain there is no up and down movement of the bearings in the case, if there is movement, the case will require replacement.


83

Technical Service Information DISASSEMBLY, INSPECTION & REASSEMBLY ACCORD BAXA & PRELUDE M6HA PARK MECHANISM

84


Technical Service Information TRANSMISSION REASSEMBLY ACCORD BAXA & PRELUDE M6HA


85


86




87


88




89


90



NOTE: For 2000 and later models, install the pitot flange on the mainshaft idler gear, then install the lubrication pitot pipe and the pitot pipe on the transmission housing.

LUBRICATION PITOT PIPE PITOT PIPE

6 x 1.0 mm 12 N-m (1.2 kgf-m) (8.7 lb. ft.)

PITOT FLANGE


91


92




93

Technical Service Information TRANSMISSION REASSEMBLY ACCORD BAXA & PRELUDE M6HA CONVERTER & DRIVE PLATE

94


Technical Service Information TRANSMISSION INSTALLATION ACCORD BAXA & PRELUDE M6HA


95


96




97


98



A/T CLUTCH PRESSURE CONTROL SOLENOIDS A&B

HARNESS CLAMPS


3RD CLUTCH PRESSURE SWITCH

GROUND HARNESS CABLE CLAMPS


99


COOLER LINE CONNECTIONS

100


Technical Service Information SPECIFICATIONS ACCORD BAXA


101


102




103

Technical Service Ser vice Information Inform ation SPECIFICATIONS ACCORD BAXA

104


Technical Service Ser vice Information Inform ation SPECIFICATIONS ACCORD BAXA


105

Technical Service Ser vice Information Inform ation SPECIFICATIONS PRELUDE M6HA

106


Technical Service Information SPECIFICATIONS PRELUDE M6HA


107

Technical Service Information SPECIFICATIONS PRELUDE M6HA

108


Technical Service Information SPECIAL TOOLS ACCORD BAXA/PRELUDE M6HA REFERENCE NUMBER

TOOL NUMBER

DESCRIPTION


QUANTITY

109

Technical Service Information

HONDA ACCORD 1998 & LATER WITH BAXA/MAXA TRANSMISSION DELAY IN REVERSE AND 1-2 BIND-UP HARSH DRIVE ENGAGEMENT COMPLAINT:

The transmission has been overhauled, and after the transmission is installed back into the vehicle, the transmission delays in reverse and binds up on the 1-2 shift. A harsh engagement into drive will also occur.

CAUSE:

During the installation of the transmission the connectors for shift solenoids "B" and "C" were switched with the connectors for A/T Clutch Pressure Control solenoids "A" and "B". These connectors are identical in configuration (Refer to Figures 2 & 3) which permits the cross connection of these solenoid connectors causing the above complaints.

CORRECTION: When reconnecting these solenoid connectors, use the chart in figure 1 to insure the correct solenoid connections have been made. NOTE: There are other Honda/Acura transaxles that are very similar to the BAXA/MAXA, causing the same possibility of cross connecting Shift Solenoid "A" and "B" connectors with A/T Clutch Pressure Control Solenoid connectors, these are listed below: B7XA...................................................................................1998-01 Honda Accord V6 M6HA......................................................................................1997-01 Honda Prelude MDWA.................................................................1997-98 Honda Odyssey/Isuzu Oasis B7TA/B7YA.............................................................................1999-01 Honda Odyssey M7ZA...........................................................................................1996-99 Acura 3.0CL B6VA............................................................................................1998-99 Acura 2.3CL M7WA..........................................................................................1999-01 Acura 3.2TL

HONDA ACCORD L4 WITH BAXA/MAXA - SOLENOID CONNECTOR WIRE COLORS SOLENOID

CONNECTOR WIRE COLORS

A/T CLUTCH PRESSURE CONTROL SOLENOID "A"

WHITE AND RED

A/T CLUTCH PRESSURE CONTROL SOLENOID "B"

GREEN AND ORANGE

SHIFT SOLENOID "B"

GREEN/WHITE AND BLACK

SHIFT SOLENOID "C"

GREEN AND BLACK Figure 1

110

AUTOMATIC TRANSMISSION SERVI CE GROUP

Technical Service Information HONDA ACCORD 1998 & LATER WITH BAXA/MAXA TRANSMISSION DELAY IN REVERSE AND 1-2 BIND-UP HARSH DRIVE ENGAGEMENT

SHIFT SOLENOID "B"

1 2

SHIFT SOLENOID "C"

1 2

SHIFT SOLENOID "B" CONNECTOR

SHIFT SOLENOID "C" CONNECTOR

SHIFT SOLENOIDS "B" & "C" CONNECTORS HAVE SAME CONFIGURATION AS A/T CLUTCH PRESSURE CONTROL SOLENOIDS "A" & "B"

Figure 2

1 2

A/T CLUTCH PRESSURE CONTROL SOLENOID "B"

1 2

A/T CLUTCH PRESSURE CONTROL SOLENOID "A"

A/T CLUTCH PRESSURE CONTROL SOLENOID "B" CONNECTOR

A/T CLUTCH PRESSURE CONTROL SOLENOID "A" CONNECTOR

A/T CLUTCH PRESSURE CONTROL SOLENOIDS "A" & "B" CONNECTORS HAVE SAME CONFIGURATION AS SHIFT SOLENOIDS "B" & "C"

Figure 3

AUTOMATIC TRANSMISSION SERVI CE GROUP

111

ATSG Honda BAXA MAXA M6HA

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