honda accord baxa/maxa honda prelude m6ha · honda accord baxa/maxa honda prelude m6ha the...

AUTOMATIC TRANSMISSION SERVICE GROUP9200 S. DADELAND BLVD.

SUITE 720MIAMI, FL 33156(305) 670-4161

DALE ENGLANDCHIEF EXECUTIVE OFFICER

ED KRUSETECHNICAL CONSULTANT

JIM DIALSR.TECHNICAL CONSULTANT

GREGORY LIPNICKTECHNICAL CONSULTANT

JERRY GOTTTECHNICAL CONSULTANT

PETE LUBANTECHNICAL SUPERVISOR

WAYNE COLONNAPRESIDENT

DAVID CHALKERTECHNICAL CONSULTANT

STANTON ANDERSONTECHNICAL CONSULTANT

The USA built BAXA and the JAPAN built MAXA and the M6HA transaxle is part of a new generation of 3 shaft transaxles. The features that make these units unique are the use of 6 solenoids, 2 pressure switches and NO one-way clutches.The combination of the PCM switching the 3 shift solenoids on and off differently during the shifts then they are while in gear while the 2 pressure control solenoids are controlling the shift feel as well as converter clutch application which is why there is only 1 TCC solenoid.Both shift timing and shift feel for the BAXA/MAXA/M6HA are computer controlled which requires a full complement of sensors.The clutch apply pistons are unique as well in as much as 2 of them have the familiar reed valves and 2 of them do not. All pertinent information for teardown and assembly as well as some electrical diagnosis, covering model years 1997 to 2001 has been included in this Techtran® manual.

INTRODUCTION

HONDA ACCORD BAXA/MAXAHONDA PRELUDE M6HA

The information and part numbers contained in this manual have been carefully compiled from industry sources known for their reliability, however, A.T.S.G. does not guarantee their accuracy.

A.T.S.G. would like to thank Honda Motor Co. for the illustrations and information contained in this manual.

GERALD CAMPBELLTECHNICAL CONSULTANT

JON GLATSTEINELECTRICAL CONSULTANT

ROLAND ALVAREZTECHNICAL CONSULTANT

1


3457131418192022232425262930313536373843444647495061859495101106109110112

Overview........................................................................................................Clutch Application Chart............................................................................Component Locator.....................................................................................Solenoid Function Chart..............................................................................Lock-Up Operation......................................................................................Solenoid Operation......................................................................................Pressure Switch Diagnosis...........................................................................Sport Shift Mode (Prelude Only)................................................................Grade Logic Control System.......................................................................Code Retrieval Procedure (Accord)............................................................Code Clearing Procedure (Accord).............................................................Code Retrieval Procedure (Prelude)...........................................................Code Clearing Procedure (Prelude)............................................................Diagnostic Trouble Code Definition Charts...............................................TCM Circuit Diagram And Terminal Locations (Accord).......................TCM Circuit Diagram And Terminal Locations (Prelude)......................Trouble Shooting Guides..............................................................................A/T Gear Position Switch Continuity Chart..............................................Oil Pressure Chart........................................................................................Automatic Transmission Fluid Requirements............................................Transmission Removal..................................................................................Transmission Disassembly - End Cover & Idler Gears (BAXA)..............Transmission Disassembly - End Cover & Idler Gears ( M6HA)............Transmission Disassembly - Transmission Housing (BAXA)...................Transmission Disassembly - Transmission Housing (M6HA)...................Transmission Disassembly - Continued.......................................................Transmission Disassembly - Valve Body.....................................................Transmission Disassembly, Inspection & Reassembly...............................Transmission Reassembly.............................................................................Torque Converter And Drive Plate.............................................................Transmission Installation.............................................................................Specifications (BAXA)..................................................................................Specifications (M6HA)..................................................................................Special Tools..................................................................................................Bulletins.........................................................................................................Notes...............................................................................................................

INDEX

AUTOMATIC TRANSMISSION SERVICE GROUP9200 S. DADELAND BLVD. STE 720

MIAMI, FLORIDA 33156(305) 670-4161

2


SHIFT CONTROLSOLENOID "C"

(SCS"C")BROWN CONNECTOR

SHIFT CONTROLSOLENOID "B"

(SCS"B")BLACK CONNECTOR

CLUTCH PRESSURECONTROL SOLENOID "B"

(CPCS"B")BLACK CONNECTOR

MAINSHAFTSPEED SENSOR

COUNTERSHAFTSPEED SENSOR

CLUTCH PRESSURECONTROL SOLENOID "A"

(CPCS"A")BROWN CONNECTOR

3rd GEARPRESSURE SWITCH

(Accord Only)

2nd GEARPRESSURE SWITCH

SHIFT CONTROLSOLENOID "A"

(SCS"A")

LOCK-UP CONTROL SOLENOID

(LUCS)

AUTOMATIC TRANSMISSION SERVICE GROUP

Technical Service Information

3

BAXA/MAXA/M6HACLUTCH APPLICATION CHART



4

HONDA ACCORD BAXA/MAXACOMPONENT LOCATOR

POWERTRAIN CONTROLMODULE (PCM)

DATA LINKCONNECTOR (DLC)


2ND CLUTCHPRESSURE SWITCH

A/T GEARPOSITION SWITCH

"A & B" CLUTCHPRESSURE CONTROLSOLENOID ASSEMBLY


3RD CLUTCHPRESSURE SWITCH



LOCK-UP CONTROL&SHIFT CONTROL

SOLENOID "A" ASSEMBLY



5

HONDA PRELUDE M6HACOMPONENT LOCATOR

TRANSMISSIONCONTROL MODULE (TCM)

ENGINE CONTROLMODULE (ECM)


"A & B" CLUTCHPRESSURE CONTROLSOLENOID ASSEMBLY



LOCK-UP CONTROL&SHIFT CONTROL

SOLENOID "A" ASSEMBLY




VEHICLESPEED SENSOR



6

SOLENOID CONTROL

SHIFT CONTROLShifting 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.

REVERSE INHIBIT CONTROLWhen 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.

D3D4

P

N

SHIFT LEVERPOSITION

GEAR POSITIONSHIFT SOLENOID

A B C

SHIFTING FROM PARK OR NEUTRAL TO REVERSE

2

R

1

OFF OFFONPARK

WHILE IN REVERSE

REVERSE INHIBIT

NEUTRAL

SHIFTING FROM NEUTRAL

WHILE IN FIRST

SHIFTING BETWEEN FIRST AND SECOND

WHILE IN SECOND

SHIFTING BETWEEN SECOND AND THIRD

WHILE IN THIRD

SHIFTING BETWEEN THIRD AND FOURTH

WHILE IN FOURTH

SECOND

FIRST

OFF ON ON

OFF ON OFF

OFF ON ON

OFF ON OFF

ONON ON

OFF ON ON

ON ON ON

ON ON OFF

ON OFFOFF

ON OFF ON

ONOFFOFF

OFF OFF OFF

OFFONON

OFF ON ON



7



8

1st

Clu

tch

3rd

Clu

tch

3rd

Clu

tch

Pre

ssu

re S

wit

ch2n

d C

lutc

hP

ress

ure

Sw

itch

2n

d C

lutc

h4t

h C

lutc

h"

ON

"

EN

GA

GE

ME

NT

FR

OM

NE

UT

RA

L T

O R

EV

ER

SE

AN

D R

EV

ER

SE

SO

LE

NO

ID A

PP

LIC

AT

ION

NE

UT

RA

L T

O R

EV

ER

SE

TR

AN

SIT

ION

RE

VE

RS

E

Sel

ecto

r p

osi

tio

n

Sel

ecto

r p

osi

tio

n

Gea

r

Gea

r

Pre

ssu

re M

ode

Pre

ssu

re M

ode

SC

S "

A"

SC

S "

A"

SC

S "

B"

SC

S "

B"

SC

S "

C"

SC

S "

C"

CP

CS

"A

"

CP

CS

"A

"

CP

CS

"B

"

CP

CS

"B

"

LU

CS

LU

CS

D4

D4

R R

OF

F

OF

F

ON

ON

ON

OF

FO

FF

OF

Fm

odu

lati

ng

OF

F

OF

FO

FF

CP

C

LIN

E

Su

mm

ary:

Sh

ift

Sol

enoi

d "

C"

is

ON

wh

ich

sh

uts

off

oil

to

the

bore

plu

g si

de o

f th

e R

ever

se C

PC

val

ve.

Lin

e P

ress

ure

is

sen

t to

th

e R

ever

se C

PC

val

ve w

hic

h i

s co

ntr

olle

d by

th

e m

odu

lati

on o

f C

lutc

h P

ress

ure

Con

trol

Sol

enoi

d va

lve

"A

".

Th

is c

ontr

ols

the

appl

icat

ion

of

the

4th

clu

tch

via

th

e S

ervo

Val

ve a

nd

Man

ual

Val

ve.

Su

mm

ary:

Sh

ift

Sol

enoi

d "

C"

is

turn

ed O

FF

wh

ich

str

okes

th

e R

ever

se C

PC

val

ve.

Th

is s

wit

ches

4th

clu

tch

pre

ssu

re

from

CP

C m

ode

to L

ine

pres

sure

mod

e vi

a th

e S

ervo

Val

ve a

nd

Man

ual

Val

ve.

NE

UT

RA

L

Sel

ecto

r p

osi

tio

nG

ear

Pre

ssu

re M

ode

SC

S "

A"

SC

S "

B"

SC

S "

C"

CP

CS

"A

"C

PC

S "

B"

LU

CS

NN

OF

FO

NO

FF

OF

FO

FF

OF

Fn

/a

SOLENOID CONTROL

SOLENOID CONTROL



9

1st

Clu

tch

"O

N"

3rd

Clu

tch

3rd

Clu

tch

Pre

ssu

re S

wit

ch2n

d C

lutc

hP

ress

ure

Sw

itch

2nd

Clu

tch

4th

Clu

tch

EN

GA

GE

ME

NT

FR

OM

NE

UT

RA

L T

O D

4 "

1st"

GE

AR

SO

LE

NO

ID A

PP

LIC

AT

ION

NE

UT

RA

L

NE

UT

RA

L T

O D

4 -

1st

GE

AR

TR

AN

SIT

ION

D4

- 1

st G

EA

R

Sel

ecto

r po

siti

on

Sel

ecto

r po

siti

on

Sel

ecto

r po

siti

on

Gea

r

Gea

r

Gea

r

Pre

ssu

re M

od

e

Pre

ssu

re M

od

e

Pre

ssu

re M

od

e

SC

S "

A"

SC

S "

A"

SC

S "

A"

SC

S "

B"

SC

S "

B"

SC

S "

B"

SC

S "

C"

SC

S "

C"

SC

S "

C"

CP

CS

"A

"

CP

CS

"A

"

CP

CS

"A

"

CP

CS

"B

"

CP

CS

"B

"

CP

CS

"B

"

LU

CS

LU

CS

LU

CS

N D4

D4

N 1st

1st

OF

F

ON

OF

F

ON

ON

ON

OF

F

ON

ON

OF

F

mod

ula

tin

g

OF

F

OF

F

OF

F

OF

F

OF

F

OF

F

OF

F

n/a

CP

C

LIN

E

Su

mm

ary:

Sh

ift

Sol

enoi

ds "

A"

an

d "

C"

are

tu

rned

ON

to

con

nec

t 1s

t cl

utc

h a

pply

oil

to

the

spri

ng

side

an

d ce

nte

r of

C

PC

val

ve "

A."

Clu

tch

Pre

ssu

re C

ontr

ol S

olen

oid

valv

e "

A"

oil

mod

ula

tes

on t

he

bore

plu

g si

de

of C

PC

val

ve "

A"

to

con

trol

1st

clu

tch

app

lica

tion

. Th

e 1s

t cl

utc

h i

s ap

plie

d w

ith

red

uce

d pr

essu

re, w

hic

h i

s C

PC

mod

e.

Su

mm

ary:

Sh

ift

Sol

enoi

d "

A"

is

turn

ed O

FF

wh

ich

sw

itch

es t

he

port

on

Sh

ift

Val

ve "

A"

fro

m C

PC

to

Lin

e P

ress

ure

. 1s

t C

lutc

h p

ress

ure

is

now

Lin

e P

ress

ure

SOLENOID CONTROL



10

1st

Clu

tch

3rd

Clu

tch

3rd

Clu

tch

Pre

ssu

re S

wit

ch2n

d C

lutc

hP

ress

ure

Sw

itch

"O

N"

2n

d C

lutc

h"

ON

"4t

h C

lutc

h

"1s

t" T

O "

2n

d"

UP

SH

IFT

AN

D "

2n

d"

GE

AR

SO

LE

NO

ID A

PP

LIC

AT

ION

D4

- 1s

t G

EA

R

D4

- 1

st T

O 2

nd

GE

AR

TR

AN

SIT

ION

D4

- 2n

d G

EA

R

Sel

ecto

r p

osi

tio

n

Sel

ecto

r p

osi

tio

n

Sel

ecto

r p

osi

tio

n

Gea

r

Gea

r

Gea

r

Pre

ssu

re M

od

e

Pre

ssu

re M

od

e

Pre

ssu

re M

od

e

SC

S "

A"

SC

S "

A"

SC

S "

A"

SC

S "

B"

SC

S "

B"

SC

S "

B"

SC

S "

C"

SC

S "

C"

SC

S "

C"

CP

CS

"A

"

CP

CS

"A

"

CP

CS

"A

"

CP

CS

"B

"

CP

CS

"B

"

CP

CS

"B

"

LU

CS

LU

CS

LU

CS

D4

D4

D4

2nd

2nd

1st

ON

ON

OF

F

ON

ON

ON

ON

ON

ON

ON

mod

ula

tin

gm

odu

lati

ng

OF

FO

FF

OF

F

OF

FO

FF

OF

F

CP

C

LIN

E

LIN

E

Su

mm

ary:

Sh

ift

Sol

enoi

ds "

A"

an

d "

C"

are

tu

rned

ON

to

con

nec

t 1s

t cl

utc

h a

pply

oil

to

the

spri

ng

side

an

d ce

nte

r of

C

PC

val

ve "

A."

Clu

tch

Pre

ssu

re C

ontr

ol S

olen

oid

valv

e "

A"

oi

l m

odu

late

s on

th

e bo

re p

lug

side

of

CP

C v

alve

"A

"

wh

ich

tu

rns

1st

clu

tch

pre

ssu

re b

ack

to C

PC

mod

e. C

lutc

h P

ress

ure

Con

trol

Sol

enoi

d va

lve"

B"

oil

mod

ula

tes

on t

he

bore

plu

g si

de o

f C

PC

val

ve "

B"

wh

ich

con

trol

s th

e ap

plic

atio

n o

f th

e 2n

d cl

utc

h.

Su

mm

ary:

Sh

ift

Sol

enoi

d "

C"

is

turn

ed O

FF

wh

ich

sw

itch

es 2

nd

clu

tch

pre

ssu

re t

o L

ine

pres

sure

mod

e vi

a th

e M

anu

al v

alve

, an

d co

nn

ects

th

e 1s

t cl

utc

h t

o an

exh

aust

via

Sh

ift

Val

ve "

C."

Clu

tch

Pre

ssu

re C

ontr

ol S

olen

oid

valv

e "

A"

is

turn

ed o

n t

o bl

ock

pres

sure

fro

m t

he

bore

plu

g si

de o

f C

PC

val

ve "

A."



11

1st

Clu

tch

3rd

Clu

tch

"O

N"

3rd

Clu

tch

Pre

ssu

re S

wit

ch"

ON

"

2nd

Clu

tch

Pre

ssu

re S

wit

ch

2nd

Clu

tch

4th

Clu

tch

"2n

d"

TO

"3r

d"

UP

SH

IFT

AN

D "

3rd

" G

EA

R S

OL

EN

OID

AP

PL

ICA

TIO

N

D4

- 2

nd

TO

3rd

GE

AR

TR

AN

SIT

ION

D4

- 3

rd G

EA

R

D4

- 2

nd

GE

AR

Sel

ecto

r po

siti

on

Sel

ecto

r po

siti

on

Sel

ecto

r po

siti

on

Gea

r

Gea

r

Gea

r

Pre

ssu

re M

ode

Pre

ssu

re M

ode

Pre

ssu

re M

ode

SC

S "

A"

SC

S "

A"

SC

S "

A"

SC

S "

B"

SC

S "

B"

SC

S "

B"

SC

S "

C"

SC

S "

C"

SC

S "

C"

CP

CS

"A

"

CP

CS

"A

"

CP

CS

"A

"

CP

CS

"B

"

CP

CS

"B

"

CP

CS

"B

"

LU

CS

LU

CS

LU

CS

D4

D4

D4

3rd

3rd

2n

d

ON

ON

ON

OF

F

OF

F

ON

OF

F

OF

F

ON

OF

F

ON

mod

ula

tin

gm

odu

lati

ng

OF

F

OF

F

OF

F

ON

OF

F

CP

C

LIN

E

LIN

E

Su

mm

ary:

Sh

ift

Sol

enoi

d "

B"

is

turn

ed O

FF

, w

hic

h s

trok

es S

hif

t V

alve

B,

to c

onn

ect

the

2nd

clu

tch

bac

k to

CP

C

valv

e "

B."

2n

d cl

utc

h p

ress

ure

is

chan

ged

to C

PC

mod

e th

ru t

he

mod

ula

tion

of

Clu

tch

Pre

ssu

re C

ontr

ol S

olen

oid

valv

e "

B"

act

ing

on t

he

bore

plu

g si

de o

f C

PC

val

ve "

B."

Clu

tch

Pre

ssu

re C

ontr

ol S

olen

oid

valv

e "

A"

act

ing

on t

he

bore

plu

g si

de o

f C

PC

val

ve "

A"

con

trol

s th

e ap

plic

atio

n o

f th

e 3r

d cl

utc

h.

Su

mm

ary:

Sh

ift

Sol

enoi

d "

C"

is

turn

ed O

N w

hic

h s

trok

es S

hif

t V

alve

"C

" a

nd

swit

ches

3rd

clu

tch

pre

ssu

re t

o L

ine

pres

sure

mod

e vi

a th

e M

anu

al v

alve

, an

d co

nn

ects

th

e 2n

d cl

utc

h t

o an

exh

aust

via

Sh

ift

Val

ve "

C."

SOLENOID CONTROL

SOLENOID CONTROL



12

1st

Clu

tch

3rd

Clu

tch

3rd

Clu

tch

Pre

ssu

re S

wit

ch2n

d C

lutc

hP

ress

ure

Sw

itch

2n

d C

lutc

h4t

h C

lutc

h"

ON

"

"3

rd"

TO

"4

th"

UP

SH

IFT

AN

D "

4th

" G

EA

R S

OL

EN

OID

AP

PL

ICA

TIO

N

D4

- 3

rd T

O 4

th G

EA

R T

RA

NS

ITIO

N

D4

- 4

th G

EA

R

D4

- 3r

d G

EA

R

Sel

ecto

r p

osi

tio

n

Sel

ecto

r p

osi

tio

n

Sel

ecto

r p

osi

tio

n

Gea

r

Gea

r

Gea

r

Pre

ssu

re M

od

e

Pre

ssu

re M

od

e

Pre

ssu

re M

od

e

SC

S "

A"

SC

S "

A"

SC

S "

A"

SC

S "

B"

SC

S "

B"

SC

S "

B"

SC

S "

C"

SC

S "

C"

SC

S "

C"

CP

CS

"A

"

CP

CS

"A

"

CP

CS

"A

"

CP

CS

"B

"

CP

CS

"B

"

CP

CS

"B

"

LU

CS

LU

CS

LU

CS

D4

D4

D4

4th

4th

2nd

OF

F

OF

F

ON

OF

F

OF

F

OF

F

ON

ON

OF

F

ON

OF

F

mod

ula

tin

gm

odu

lati

ng

OF

F

OF

F

OF

F

OF

F

ON

CP

C

LIN

E

LIN

E

Su

mm

ary:

Sh

ift

Sol

enoi

d "

A"

is

turn

ed O

FF

, w

hic

h s

trok

es S

hif

t V

alve

"A

," t

o co

nn

ect

the

3rd

clu

tch

bac

k to

CP

C

valv

e "

A"

." 3

rd c

lutc

h p

ress

ure

is

turn

ed t

o C

PC

mod

e th

ru t

he

mod

ula

tion

of

Clu

tch

Pre

ssu

re C

ontr

ol S

olen

oid

valv

e "

A"

act

ing

on t

he

bore

plu

g si

de o

f C

PC

val

ve "

A."

Clu

tch

Pre

ssu

re C

ontr

ol S

olen

oid

valv

e "

B"

oil

act

s on

th

e bo

re p

lug

side

of

CP

C v

alve

"B

" w

hic

h c

ontr

ols

the

appl

icat

ion

of

the

4th

clu

tch

.

Su

mm

ary:

Sh

ift

Sol

enoi

d "

C"

is

turn

ed O

FF

wh

ich

str

okes

Sh

ift

valv

e "

C."

Th

is s

wit

ches

4th

clu

tch

pre

ssu

re t

o L

ine

pres

sure

via

th

e M

anu

al v

alve

. C

lutc

h P

ress

ure

Con

trol

Sol

enoi

d va

lve

"A

" i

s O

N t

o bl

ock

pres

sure

to

the

bore

plu

g si

de o

f C

PC

val

ve "

A."

Th

e 3r

d cl

utc

h i

s co

nn

ecte

d to

an

exh

aust

via

Sh

ift

Val

ve "

C."

LOCK-UP CONTROLThe 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.

D4

- 4t

h G

EA

R-T

CC

AP

PL

IED

Sele

ctor

pos

ition

Gea

rP

ress

ure

Mod

eSC

S "A

"SC

S "B

"SC

S "C

"C

PC

S "A

"C

PC

S "B

"L

UC

S

D4

4th

OF

FO

FF

ON

mod

ulat

ing

ON

OF

FL

INE

Su

mm

ary:

Th

e L

ock-

up

Con

trol

Sol

enoi

d is

tu

rned

ON

wh

ich

dra

ins

the

oil

on t

he

spri

ng

side

of

the

Loc

k-u

p sh

ift

valv

e. T

he

com

pute

r co

ntr

ols

the

swit

chin

g of

Par

tial

, Hal

f, a

nd

Fu

ll C

onve

rter

C

lutc

h a

ppli

cati

on t

hru

th

e m

odu

lati

on o

f th

e C

lutc

h P

ress

ure

Con

trol

Sol

enoi

d va

lve

"A

"

acti

ng

on t

he

Loc

k-u

p ti

min

g an

d co

ntr

ol v

alve

. E

xam

ple:

Wh

en C

lutc

h P

ress

ure

Con

trol

S

olen

oid

valv

e "

A"

pre

ssu

re i

s lo

w, a

nd

the

Loc

k-u

p C

ontr

ol S

olen

oid

is O

N,

the

Tor

que

Con

vert

er C

lutc

h i

s ap

plie

d pa

rtia

lly.

Wh

en C

lutc

h P

ress

ure

Con

trol

Sol

enoi

d va

lve

"A

"

Su

mm

ary:

Th

e L

ock-

up

Con

trol

Sol

enoi

d is

tu

rned

ON

wh

ich

dra

ins

the

oil

on t

he

spri

ng

side

of

the

Loc

k-u

p sh

ift

valv

e. T

he

com

pute

r co

ntr

ols

the

swit

chin

g of

Par

tial

, Hal

f, a

nd

Fu

ll C

onve

rter

C

lutc

h a

ppli

cati

on t

hru

th

e m

odu

lati

on o

f th

e C

lutc

h P

ress

ure

Con

trol

Sol

enoi

d va

lve

"B

"

acti

ng

on t

he

Loc

k-u

p ti

min

g an

d co

ntr

ol v

alve

. E

xam

ple:

Wh

en C

lutc

h P

ress

ure

Con

trol

S

olen

oid

valv

e "

B"

pre

ssu

re i

s lo

w, a

nd

the

Loc

k-u

p C

ontr

ol S

olen

oid

is O

N,

the

Tor

que

Con

vert

er C

lutc

h i

s ap

plie

d pa

rtia

lly.

Wh

en C

lutc

h P

ress

ure

Con

trol

Sol

enoi

d va

lve

"B

"

TO

RQ

UE

CO

NV

ER

TE

R C

LU

TC

H E

NG

AG

EM

EN

T

D4

- 3r

d G

EA

R-T

CC

AP

PL

IED

Sele

ctor

pos

ition

Gea

rP

ress

ure

Mod

eSC

S "A

"SC

S "B

"SC

S "C

"C

PC

S "A

"C

PC

S "B

"L

UC

S

D4

2nd

ON

OF

Fm

odul

atin

gO

FF

ON

ON

LIN

E

TO

RQ

UE

CO

NV

ER

TE

RC

LU

TC

H "

OF

F"

TO

RQ

UE

CO

NV

ER

TE

RC

LU

TC

H "

PAR

TIA

L A

PP

LIC

AT

ION

"T

OR

QU

E C

ON

VE

RT

ER

CL

UT

CH

"H

AL

F A

PP

LIC

AT

ION

"T

OR

QU

E C

ON

VE

RT

ER

CL

UT

CH

"F

UL

L A

PP

LIC

AT

ION

"

TC

CC

LU

TC

HT

CC

CL

UT

CH

TC

CC

LU

TC

HT

CC

CL

UT

CH



13

SOLENOID CHECK AND OPERATION

LOCK-UP CONTROL AND SHIFT CONTROL SOLENOID "A" OFF

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



Copyright © 2002 ATSG

141

141

141141

LOCK-UP CONTROLSOLENOID

LOCK-UP CONTROLSOLENOID

MODULATING VALVEPRESSURE TO LOCK-UP

SHIFT VALVE(spring side)

MODULATING VALVEPRESSURE TO LOCK-UP

SHIFT VALVE(spring side)

MODULATING VALVEPRESSURE TO SHIFT

VALVE "A"

MODULATING VALVEPRESSURE TO SHIFT

VALVE "A"



solenoidgasket

solenoidgasket

X BLOCKED

X BLOCKED

X

X

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."

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.

CONNECTED

CONNECTED

14





SHIFT CONTROL SOLENOID "B" AND "C" OFF

SHIFT CONTROL SOLENOID "B" AND "C" ON

X

X

X

X

FROM MODULATORVALVE

FROM MODULATORVALVE

FROM MODULATORVALVE

FROM MODULATORVALVE

TO SHIFT VALVE "B"AND SERVO

CONTROL VALVE

FROM SHIFT VALVE "B"AND SERVO

CONTROL VALVE

TO SHIFT VALVE "C"AND REVERSE

CPC VALVE

FROM SHIFT VALVE "C"AND REVERSE

CPC VALVE

SCS "B"ON

(black connector)

SCS "B"OFF

(black connector)

SCS "C"ON

(brown connector)

SCS "C"OFF

(brown connector)

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

CONNECTED

CONNECTED

CONNECTED

CONNECTED

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.

15

From Modulating Valve( Solenoid regulator)

From Modulating Valve( Solenoid regulator)

Pressure port

Pressure port

To CPC valve "A"Reverse CPC valve

Shift valve "C"

To CPC valve "A"Reverse CPC valve

Shift valve "C"

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

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

CLUTCH PRESSURE CONTROL SOLENOID AND VALVE OPERATION "OFF"

CLUTCH PRESSURE CONTROL SOLENOID AND VALVE OPERATION "ON"

CLUTCH PRESSURE CONTROL SOLENOID AND VALVE "B"

CLUTCH PRESSURE CONTROL SOLENOID AND VALVE "A"

CLUTCH PRESSURE CONTROL SOLENOID AND VALVE "A"

CLUTCH PRESSURE CONTROL SOLENOID AND VALVE "B"

CLUTCH PRESSURECONTROL

SOLENOIDS "OFF"

CLUTCH PRESSURECONTROL

SOLENOIDS "ON"

X

X

X

X

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 "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."




16

CLUTCH PRESSURECONTROL SOLENOID

VALVE "A" OFF


VALVE "A" ON


VALVE "B" OFF


VALVE "B" ON

APPLY AIRPRESSURE HERE

APPLY AIRPRESSURE HERE

AIR WILL EXHAUSTTHRU THIS HOLE

AIR WILL EXHAUSTTHRU THIS HOLE

AIR IS BLOCKEDTO THIS HOLE

AIR IS BLOCKEDTO THIS HOLE




CLUTCH PRESSURE CONTROL SOLENOID VALVES "A" AND "B" OFF



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

17




PRESSURE SWITCH CHECK AND OPERATION2nd OR 3rd GEAR PRESSURE SWITCH "OFF"

2nd OR 3rd GEAR PRESSURE SWITCH "ON"

0.L

.001

OFF

OFF

RPM

RPM

RPM

RPM

COM

COM

mA

mA

A

A

V

V

V

V

mV

mV

WW

WW

WW

WW

V

V

mAA

mAA

mAA

mAA

WW

WW

NO PRESSUREAPPLIED

40-100 psi.OF PRESSURE

APPLIED

CLOSED ATAPPROXIMATLY

40 psi.

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

SUMMARY: THE 2nd AND 3rd GEAR PRESSURE SWITCHES "CLOSE" WHEN 40-100 psi. OF PRESSUREIS APPLIED TO THE SWITCH.

18



CLUTCH PRESSURE CONTROLThe 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.

SOLENOID CONTROL

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.

SPORTSHIFT MODESHIFT INDICATOR

2

19

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 CONTROLWhen 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

DESCENDING CONTROLWhen 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.

GRADE LOGIC CONTROL SYSTEM

DECELERATION CONTROLWhen 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

CODE RETRIEVAL PROCEDURE (ACCORD)

RETRIEVE CODESWhen the PCM/TCM senses an abnormality, the "D4" Lamp will begin to flash steadily as seen below.

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.

D4 LAMP FLASHESWHEN A FAULT IS

PRESENT

DATA LINKCONNECTOR

(DLC)

OBD-IISCAN TOOL

MILLAMP



22

CLEAR CODESReset 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.

PASSENGER SIDEUNDER DASH

FUSE BOX

7.5 AMPBACK-UP FUSE

REMOVE THIS FUSETO CLEAR CODES

CODE CLEARING PROCEDURE (ACCORD)



23

CODE RETRIEVAL PROCEDURE (PRELUDE)

RETRIEVE CODESWhen 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.

16 PINDATA LINK CONNECTOR

FOR SCAN TOOL USE

2 PIN SERVICECHECK CONNECTOR

D4 LAMPFLASHES STEADILY

JUMP SERVICECONNECTOR FOR

FLASH CODES



24

DTC 2

DTC 15

2 SHORT FLASHES

1 LONG FLASH

5 SHORT FLASHES

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.

CODE CLEARING PROCEDURE (PRELUDE)

CLEAR CODESReset 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.

UNDER HOODFUSE BOX

REMOVE 7.5 AMPBACK-UP FUSE

TO CLEAR CODES

7.57.5



25

*DTC D4 LAMP MIL LAMP SYMPTOM POSSIBLE CAUSE

P0715(15) ON

·Erratic Shifting ·Faulty Mainshaft Speed Sensor or Circuit

P0720(9) FLASHES ON

·Erratic Shifting·No 4th Gear·No Lock-up·No Speedometer (Accord Only)

·Faulty Countershaft Speed Sensor or Circuit

P0725(11) OFF OFF

·No Lock-up (Prelude Only) ·Loss of Engine RPM Signal·Faulty Distributor/Ignition Coil·Wire or Connection·Faulty Ignition Coil

P0730(41)

OFF ON

·Failure to shift through the gears·Skipped Shifts

·Mechanically Bad Shift Solenoids·Mechanically Bad A/T Pressure·Control Solenoids·Low Clutch Pressure·Internal Component Slipping

P0740(40)

OFF ON

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

·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

P0753(7) ONFLASHES

FLASHES

·Does Not Shift, Stuck in 4th Gear·Fails to Shift to 4th Gear·Erratic Shifting

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

P0758(8)

FLASHES ON

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

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

P0763(22)

FLASHES ON

·Electrically Bad Shift Solenoid 'C'·Shift Solenoid "C" Circuit Fault·Faulty 2nd Clutch Pressure Switch·Faulty 3rd Clutch Pressure Switch (Accord Only)

·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

P0780(45)

FLASHES ON

·Incorrect Gear Ratio·Mechanical Problem in Hydraulic System

·Mechanical Fault with Shift Solenoid A, B or C·Mechanical Fault with A/T Pressure Control Solenoid A or 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



26

DIAGNOSTIC TROUBLE CODE DEFINITION CHART


P01655(37)**

ON

·Lock-up Does Not Apply ·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

P01705(5)

ON

P01706(6)

OFF ON

P01709(24) FLASHES OFF

P01738(25) OFFOFF

FLASHES

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

·2nd Clutch Pressure Switch Circuit Failure·Faulty 2nd Clutch Pressure Switch

P01739(26)

P01750(46)

FLASHES ON

·Incorrect Gear Ratio·Transmission Slipping

·Mechanical Fault with A/T Pressure Control Solenoid A or B·Internal Hydraulic Leak

FLASHES

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

·Erratic Shifts·Shift Quadrant Indicator Lamps Do Not Indicate Correct Gear Shift Position·Shift Lever Does Not Operate Properly

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

·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)

·Mode Switch Circuit Faults·Faulty Mode Switch

OFFOFF

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

·3rd Clutch Pressure Switch Circuit Failure·Faulty 3rd Clutch Pressure Switch

P01751(47)

FLASHES ON

·Incorrect Gear Ratio·Transmission Slipping

·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 Service Check Connector is jumped.



27


*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


P01753(1)

ON

·Lock-up Does Not Apply ·Short or Open in Lock-up Solenoid Circuit·Faulty Lock-up Solenoid

P01768(16)

ON

P01773(23)

P01790(3)

FLASHES ON

FLASHES

FLASHES

·A/T Clutch Pressure Control Solenoid 'A' Circuit Fault·Faulty A/T Clutch Pressure Control Solenoid 'A'

·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 (Prelude Only)

·Vehicle Speed Sensor Circuit Fault·Faulty Vehicle Speed Sensor

FLASHES ON

·Excessive Shock or Flares on Shifts·Lock-up Clutch Does Not Operate Smoothly·Lock-up Clutch does Not Apply

·A/T Clutch Pressure Control Solenoid 'A' Circuit Fault·Faulty A/T Clutch Pressure Control Solenoid 'A'

FLASHES ON

·Lock-up Clutch Does Not Apply ·Throttle Position Sensor Circuit Fault·Faulty Throttle position Sensor

P01791(4)



28


TCM CIRCUIT DIAGRAM AND TERMINAL LOCATIONS (ACCORD)

2 3 4

12131415 1617

252627

5 6

1819

282930

20

8

21

9 10

23

32

24

1 2

9

19

10

20

11

3

12

21

4

13

22

5

14

23

16

2425

17 18

7 8 1 2 3

1314

25

15

5

16

26

6

17

27

7

18

28

19

8

20

29

9

21

30

10 1

6

13 14

7

2 3

8

15

9 10

16

11 12

5

PCM CONNECTOR TERMINAL LOCATIONS

32 PIN 25 PIN 31 PIN 16 PIN

CRUISE CONTROLUNIT

MULTIPLEXCONTROL UNIT(DRIVERS)

D4

D4 INDICATORLAMP

P

R

N

D4

D3

2

1

TRANSMISSIONRANGESWITCH

P R N D3 2 1

A/T GEAR POSITIONINDICATOR

INSTRUMENT CLUSTER

SOLENOID POWERSUPPLY

BRAKE LAMPS

BRAKE SWITCH

B+

DATA LINKCONNECTOR

ENGINE COOLANTTEMPERATURESENSOR

THROTTLEPOSITIONSENSOR

IGNITIONSWITCH

BATTERY

PGM-FIMAINRELAY

PGM-FICONTROLUNIT

TRANSMISSIONCONTROLMODULE

A/T CLUTCHPRESSURECONTROLSOLENOID 'A'

A/T CLUTCHPRESSURECONTROLSOLENOID 'B'

SHIFTSOLENOID 'A'

SHIFTSOLENOID 'B'

SHIFTSOLENOID 'C'

LOCK-UPSOLENOID




3RD CLUTCHPRESSURE SWITCH

A5

B24

B14

A28

D16

D10

D12

D11

D1

D3

D2

D7

B18

B25

B8

B17B8

B10

B1

B9

B21

C28

C27C18

C26

A10

A32

B20

B22

D5

A9

D6

D9

D8

D14

D15

D13

A14

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

#46 15 AMP FUSE(UNDER HOOD FUSE BOX)

#1 15AMPFUSE(DRIVER UNDER DASH FUSE BOX)

#42 50AMP FUSE(UNDER HOOD FUSE BOX)

#41 100AMP FUSE(UNDER HOOD FUSE BOX)



29

TCM CIRCUIT DIAGRAM AND TERMINAL LOCATIONS (PRELUDE)

15 16 17 19 20 21 22 23 25 26 12 13 14 15 16 17 18 19 20 21 22

3 4 5 6 7 8 9 10 11 12 13 1 4 5 7 8 9 10 112

14

T-MODE SWITCH

SHIFT SWITCH

MODE SWITCH

D4

D4 INDICATOR LAMP

D4

D3

P

R

N

2

1

A/T GEAR POSITIONINDICATOR

SHIFT INDICATOR

EN

GIN

E C

ON

TR

OL

MO

DU

LE

(E

CM

)

VEHICLE SPEEDSENSOR

THROTTLEPOSITIONSENSOR

DATA LINKCONNECTOR (DLC)

IGNITIONSWITCH

BATTERY


BRAKE LAMPS

BRAKE SWITCH

IGNITIONCOIL

MULTIPLEXCONTROLUNIT



LOCK-UPSOLENOID

SHIFTSOLENOID 'C'

SHIFTSOLENOID 'B'

SHIFTSOLENOID 'A'

A/T PRESSURE CONTROLSOLENOID 'B'

A/T PRESSURE CONTROLSOLENOID 'A'

TRANSMISSIONCONTROLMODULE(TCM)

P R N 2 1D3

A12

A25

A23

B20

B4

B7

B18

B19

B5

A13

A26

A14

A21

A20

A19

A10

A11

A4

A9

A8

A7

A6

A17

B13

B16

B15

B14

B12

A5

A22

B8

B9

B17

B10

A15

A16

A2

A3

B22

B11

B21

B1

BACK-UP B+

5 VOLT REFERENCE

TPS 5 VOLT SUPPLY

TPS SIGNAL

TPS GROUND

SEAF TRANSMISSION DATA OUTPUT

SEFA PGM-FI DATA INPUT

VSS INPUT

GROUND

GROUND

GROUND

#32 100 AMPFUSE(UNDER HOOD FUSE BOX)

#14 15 AMPFUSE(UNDER DASH FUSE BOX)

#43 7.5 AMP FUSE(UNDER HOOD FUSE BOX)

#33 50 AMPFUSE(UNDER HOOD FUSE BOX)

26 PIN 22 PIN

TCM CONNECTOR TERMINAL LOCATIONS



30

TROUBLESHOOTING GUIDE

PROBABLE CAUSE LIST

ELECTRONIC DEVICE FAMILY TORQUE CONVERTER FAMILY

TRANSMISSION FAMILY

HYDRAULIC CONTROL FAMILY

13 3rd clutch pressure switch defective (ACCORD ONLY)



31


SYMPTOM CHECK THESE ITEMS ON THEPROBABLE CAUSE LIST

CHECK THESE ITEMSON THE NOTES LIST

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



32


PROBABLE CAUSE LIST

ELECTRONIC DEVICE FAMILY TORQUE CONVERTER FAMILY

TRANSMISSION FAMILY

HYDRAULIC CONTROL FAMILY

13 3rd clutch pressure switch defective (ACCORD ONLY)



33


Flush transmission cooler

NOTES



34

A/T GEAR POSITION SWITCH

1

10

2 3

4 5 6 78 9

GEARPOSITION

TERMINAL 1 2 3 4 5 6 7 8 9 10

P

R

N

D4

D3

2

1

CONNECTOR VIEWOF A/T GEAR

POSITION SWITCH

BATTERY

A/T GEAR POSITION SWITCH CONTINUITY CHECK CHART



35

OIL PRESSURE CHART

ACCORD BAXA/PRELUDE M6HA

SELECTORLEVER

POSITIONGEAR

PRESSUREPORT

PRESSUREIN

PSI

N or P N or P LINE (A)

1

D3 or D4

D4

FIRST 1ST CLUTCH (B)

SECOND 2ND CLUTCH (C)

THIRD 3RD CLUTCH (D)

FOURTH 4TH CLUTCH (E)

4TH CLUTCH (E)R REVERSE

120-130

CONDITIONS

ENGINE @ 2000 RPM

ENGINE @ 2000 RPM, WHEELS FREE





2

120-130

120-130

120-130

120-130

120-130

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

LINE PRESSURE(MARKED WITH AN "A")

TCC/SHIFT SOLENOID "A"ASSEMBLY


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

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

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



36

FLUID LEVEL & CAPACITY

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



37

TRANSMISSION REMOVAL



38


(PRELUDE ONLY)

NOTE: Accords will have a3rd Clutch Pressure Switch to disconnect as well.



39




40




41




42

TRANSMISSION DISASSEMBLY

END COVER & IDLER GEARS

ACCORD BAXA



43



PRELUDE M6HA



44



PRELUDE M6HA LEGEND



45




TRANSMISSION HOUSING

ACCORD BAXA

46





PRELUDE M6HA

FEED PIPESCONTAIN FILTER SCREENS

47





PRELUDE M6HA LEGEND

48




TRANSMISSION HOUSING REMOVAL

49




VALVE BODY

ACCORD BAXA

50




VALVE BODY

PRELUDE M6HA

51




VALVE BODY

PRELUDE M6HA LEGEND

52



VALVE BODY DISASSEMBLY, INSPECTION & REASSEMBLY

ACCORD BAXA & PRELUDE M6HA

53





PUMP CLEARANCE

54





MAIN VALVE BODY

55





MAIN VALVE BODY

No.

1 Lock-up Control Valve Spring

Servo Control Valve Spring

Reverse CPC Valve Spring

Spring

Modulator Valve Spring

Shift Valve C Spring

Shift Valve D Spring

Shift Valve E Spring

Lock-up Shift Valve Spring2

3

4

5

6

7

8

Standard (New) mm (in.)

Wire Diameter O.D. Free Length No. of Coils

0.7 (0.028) 42.9 (1.689) 14.2

0.9 (0.035)

6.6 (0.260)

63.0 (2.480) 22.4

0.7 (0.028)

7.6 (0.299)

32.2 (1.268) 13.4

0.7 (0.028)

6.6 (0.260)

35.7 (1.406) 17.2

0.8 (0.031)

1.6 (0.063)

0.7 (0.028)

0.7 (0.028)

6.6 (0.260)

6.6 (0.260)

10.4 (0.409)

6.1 (0.240)

49.1 (1.933)

17.8 (0.701)

35.7 (1.406)

21.7

9.8

7.9

17.2

9

10

Converter Check Valve Spring

Cooler Check Valve Spring

1.1 (0.043)

0.6 (0.024)

6.6 (0.260)

8.4 (0.331)

5.8 (0.228)

33.5 (1.319)

38.2 (1.504)

14.5 (0.571) 6.8

14.0

56



No.

1 Regulator Valve B Spring

Spring

Lock-up Timing Valve Spring

Relief Valve Spring

Stator Reaction Spring

Regulator Valve A Spring2

3

4

5



1.6 (0.063) 9.2 (0.362) 44.0 (1.732) 14.0

1.9 (0.075) 14.7 (0.579) 77.4 (3.047) 15.2

4.5 (0.177) 35.4 (1.394) 30.3 (1.193) 1.92

1.9 (0.035) 6.6 (0.260) 39.8 (1.567) 20.4

0.65 (0.026) 6.6 (0.260) 34.8 (1.370) 15.6



REGULATOR VALVE BODY

MAKE CERTAIN THISORIFICE IS CLEAR

57





SERVO VALVE BODY

No.

1 Shift Valve B Spring

4th Accumulator Spring (PRELUDE)

4th Accumulator Spring (ACCORD)

Spring

3rd Accumulator Spring (PRELUDE)

3rd Accumulator Spring (ACCORD)

CPC Valve B Spring

CPC Valve A Spring

Shift Valve A Spring2

3

4

5

6

7

8



0.8 (0.031) 7.1 (0.280) 40.4 (1.591) 16.9

0.8 (0.031) 7.1 (0.280) 40.4 (1.591) 16.9

0.7 (0.028) 6.1 (0.240) 17.8 (0.701) 7.9

0.7 (0.028) 6.1 (0.240) 17.8 (0.701) 7.9

3.8 (0.150)

3.5 (0.138)

3.8 (0.150)

3.5 (0.138)

19.6 (0.772)

19.6 (0.772)

19.6 (0.772)

19.6 (0.772)

59.8 (2.354)

61.7 (2.429)

59.8 (2.354)

61.7 (2.429)

61.7 (2.429)

7.8

9.6

7.8

9.6

58




ACCORD BAXA

ACCUMULATOR VALVE BODY

No.

1

2nd Accumulator Spring A

2nd Accumulator Spring B

Spring

1st Accumulator Spring A

1st Accumulator Spring B

2

3

4



2.5 (0.098)

2.6 (0.102)

2.7 (0.106)

2.6 (0.102)

12.8 (0.504)

19.6 (0.772)

14.8 (0.583)

21.6 (0.850)

49.5 (1.949)

69.7 (2.744)

51.0 (2.008)

73.2 (2.882)

8.5

10.8

9.6

10.0

59




PRELUDE M6HA

ACCUMULATOR VALVE BODY

No.

1

2nd Accumulator Spring A

2nd Accumulator Spring B

Spring

1st Accumulator Spring

2

3



3.5 (0.138)

2.6 (0.102)

2.8 (0.110)

19.6 (0.772)

14.4 (0.567)

21.6 (0.850)

61.7 (2.429)

51.0 (2.008)

68.2 (2.685)

9.6

11.0

8.9

60



DISASSEMBLY, INSPECTION & REASSEMBLY


MAINSHAFT

2000-01

ACCORD

ONLY

LUBRICATION

PITOT

FLANGE

IDLER

GEAR

TRANSMISSION

HOUSING

BEARING

61





MAINSHAFT CLEARANCE

62





COUNTERSHAFT

63





SECONDARY SHAFT

64





SECONDARY SHAFT CLEARANCE

65





SECONDARY SHAFT CLEARANCE

No. Part No. (Accord) ThicknessPart No. (Prelude)

4.90mm (0.193 in)90406-P6H-00090406-POZ-0001

2 90407-POZ-000 90407-P6H-000 4.95mm (0.195 in)

3 90408-POZ-000 90408-P6H-000 5.00mm (0.197 in)

4 90409-POZ-000 90409-P6H-000 5.05mm (0.199 in)

5 90410-POZ-000 90410-P6H-000 5.10mm (0.201 in)

6 90411-POZ-000 90411-P6H-000 5.15mm (0.203 in)

7 90412-POZ-000 90412-P6H-000 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





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 pistondoes NOT use a reed valve

The 2nd clutch pistondoes NOT use a reed valve

67





3RD/4TH CLUTCH ASSEMBLIES

The 3rd clutch pistonDOES use a reed valve

The 4th clutch pistonDOES use a reed valve

68





CLUTCH DRUM ASSEMBLIES

69






70






71






5. Reverse disassembly procedure for assembly.

72






CLUTCH SERVICE LIMIT1st

2nd (Prelude)2nd (Accord)

1.15 - 1.35 mm (0.045 - 0.053 in.)

3rd4th

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





DIFFERENTIAL

COMPONENTS BACKLASH INSPECTION

75





DIFFERENTIAL

BEARING REPLACEMENT DIFFERENTIAL CARRIER REPLACEMENT

76





DIFFERENTIAL

TAPERED ROLLER BEARING PRELOAD ADJUSTMENT

77





DIFFERENTIAL

78





DIFFERENTIAL

TAPERED ROLLER BEARING OUTER RACE

79





AXLE SEALS

80





TRANSMISSION CASE & HOUSING BEARINGS

81






82



83




NOTE:After bearings are installed, make certain there is noup and down movement of the bearings in the case,if there is movement, the case will require replacement.



84



PARK MECHANISM



85

TRANSMISSION REASSEMBLY




86





87





88





89





90





91



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 PITOTPIPE

PITOT PIPE

PITOT FLANGE

6 x 1.0 mm12 N-m(1.2 kgf-m)(8.7 lb. ft.)

92







93





94



CONVERTER & DRIVE PLATE



95

TRANSMISSION INSTALLATION






96





97





98





99

MAINSHAFTSPEEDSENSOR

A/T CLUTCHPRESSURECONTROLSOLENOIDSA & B

HARNESSCLAMPS

3RD CLUTCHPRESSURESWITCH

HARNESSCLAMPS

GROUNDCABLE



100



COOLER LINE CONNECTIONS

101AUTOMATIC TRANSMISSION SERVICE GROUP


SPECIFICATIONS

ACCORD BAXA

102 AUTOMATIC TRANSMISSION SERVICE GROUP


SPECIFICATIONS

ACCORD BAXA



SPECIFICATIONS

ACCORD BAXA

104 AUTOMATIC TRANSMISSION SERVICE GROUP


SPECIFICATIONS

ACCORD BAXA



SPECIFICATIONS

ACCORD BAXA

105



106

SPECIFICATIONS

PRELUDE M6HA



SPECIFICATIONS

PRELUDE M6HA



SPECIFICATIONS

PRELUDE M6HA

108



SPECIAL TOOLS

ACCORD BAXA/PRELUDE M6HA

109

TOOL NUMBERREFERENCE NUMBER DESCRIPTION QUANTITY



110

HONDA ACCORD1998 & LATER WITH BAXA/MAXA TRANSMISSION

DELAY IN REVERSE AND 1-2 BIND-UPHARSH DRIVE ENGAGEMENT

COMPLAINT:

CAUSE:

CORRECTION:

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.

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.

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:

M6HA......................................................................................1997-01 Honda PreludeMDWA.................................................................1997-98 Honda Odyssey/Isuzu OasisB6VA............................................................................................1998-99 Acura 2.3CL

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

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



111

HONDA ACCORD1998 & LATER WITH BAXA/MAXA TRANSMISSION

DELAY IN REVERSE AND 1-2 BIND-UPHARSH DRIVE ENGAGEMENT

1 2

1 2

11 22

11 22

SHIFTSOLENOID

"B"

SHIFTSOLENOID

"C"

SHIFTSOLENOID "B" CONNECTOR

SHIFTSOLENOID "C" CONNECTOR

A/T CLUTCH PRESSURECONTROL SOLENOID

"A"


"B"


"B" CONNECTOR


"A"CONNECTOR

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

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

Figure 2

Figure 3

112

Notes

honda accord baxa/maxa honda prelude m6ha · honda accord baxa/maxa honda prelude m6ha the...

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