1987 MAZDA 626 brake

7B OUTLINE
OUTLINE
SPECIFICATIONS
Model G4A-EL (EC-AT) G4A-HL (4-speed) Model G4A-EL (EC-AT)
FE engine F8 engine

Torque converter stall torque ratio 1.710—1.900
: 1
1.900-2.100
: 1

Gear ratio
First 2.800
Gear ratio
Second 1.540
Gear ratio Third 1.000 Gear ratio
Fourth (OD) 0.700
Gear ratio
Reverse 2.333
Final gear ratio 3.700
Number
of
drive plates/ driven plates
Forward clutch 3/3
Number
of
drive plates/ driven plates
Coasting clutch 2/2
Number
of
drive plates/ driven plates 3-4 clutch 5/5 4/4 Number
of
drive plates/ driven plates
Reverse clutch 2/2
Number
of
drive plates/ driven plates
Low and reverse brake 3/3 4/4
Servo diameter (Piston outer dia./retainer inner dia.) mm (in) 78/53 (3.07/2.09) 78/49 (3.07/1.93) 78/56 (3.07/2.20)
Speedometer gear ratio (Driven/Drive gear) 20
: 25 or
21
: 25

Automatic transmission luid
Type Dexron
n or
MED
Automatic transmission luid Capacity
liters (US qt, Imp
qt)
6.8 (7.2, 6.0)

76G07B-002
7 B—2

OUTLINE 7B
STRUCTUAL VIEW
76G07B-005
1. Coasting clutch 7. Low and reverse brake
2. Forward clutch 8. Output gear
3. Reverse clutch 9. Idle gear
4. Reverse and forward drum 10. Differential
5. 3-4 clutch 11. Parking pawl
6. 2-4 brake band 12. Throttle cable
13. Control body
14. Oil pump
15. Inhibitor switch
16. Pulse generator
17. Fluid temperature switch
7B—5

7B OUTLINE
OPERATION OF COMPONENTS
Low and reverse brake
76U07B-508
Operation Table (G4A-EL)
Range Gear Engine
braking
effect
Operation elements
Range Gear Engine
braking
effect Forward
clutch
Coasting
clutch 3-4
clutch Reverse
clutch
2-4 brake Loftrmm
brake
One-way
clutch 1
One-way clutch 2
Range Gear Engine
braking
effect Forward
clutch
Coasting
clutch 3-4
clutch Reverse
clutch Aoolied Released
Loftrmm
brake
One-way
clutch 1
One-way clutch 2
P — —
R Reverse Yes O O
N -—
D
1st No O O O
D
2nd No o O 0
D 3rd
Below approx.
40 km/h (25 mph)
Yes o O 0 O 0 D 3rd
Above
approx.

40 km/h (25 mph)
Yes 0 o o ® o o
D
OD Yes © o o
S
1st No o 0 o
S
2nd No o 0 0
S
3rd

Below
approx,
40 km/h (25 mph)
Yes 0 0 0 0 o S
3rd Above approx.

40 km/h (25 mph)
Yes o o o ® o o
L 1st No o O o o L 2nd Yes 0 0 o o

HOLD

D
2nd No o o o

HOLD

D 3rd

Below
approx.

40 km/h (25
mpti) Yes o o o 0 o

HOLD

D 3rd Above approx,
40 km/h (25 mph)
Yes o 0 o ® 0 o

HOLD
S
2nd Yes o o 0 o

HOLD
S 3rd
Below approx.
40 km/h (25 mph)
Yes 0 o o 0 o
HOLD
S 3rd Above approx.

40 km/h (25 mph)
Yes o o o ® 0 o

HOLD

L 1st Yes o o o o o

HOLD

L 2nd Yes o 0 0 o
®: Indicates fluid pressure to servo but band not applied due to pressure difference in servo. 76G07B-006 © : Indicates that it does not function to transmition power.
7B-6

OUTLINE 7B
Operation Table (G4A-HL)
Range Gear
Operation elements
Range Gear Engine braking effect
Forward
clutch
Coasting
clutch
3-4 clutch Reverse clutch
2-4 brake Low & One-way
clutch 1
One-way
clutch 2
Range Gear Engine braking effect
Forward
clutch
Coasting
clutch
3-4 clutch Reverse clutch Applied Released reverse brake
One-way
clutch 1
One-way
clutch 2

P
— —

R
—
Yes O 0
N
— —

D
1st No O O O
D 2nd No
o
O
o
D 3rd Yes
o
O 0
®
0
o
D
OD Yes
© O 0

2 2nd Yes
o o o o

1 1st Yes
o o o o o
1 2nd Yes
o o o o
76G07B-007
® : Indicates fluid pressure to servo but band not applied due to pressure difference in servo.
® : Indicates that it does not function to transmit power.
POWER FLOW DIAGRAM
Neutral
1st gear
7B-7

7B OUTLINE
Transaxle Case
To governor valve
/and 2-3 accumulator
Inlet to control valve body
(governor pressure)
Outlet to torque converter
(Release side)
Outlet to torque converter
(Apply side)
Outlet to 3-4 clutch
To governor valve and 2-3 accumulator^
From governor valve (governor pressure)
To torque converter (Release side)
To torque converter (Apply side)
To 3-4 clutch
From oil pump
(To control valve body)
°Lto coasting clutch
y
To reverse clutch
To forward clutch
To low and reverse brake
To 2-4 brake apply side
CgEfey a —* To 2-4 brake release side
7B—10
76G07B-009

7B TROUBLESHOOTING (G4A-EL)

ON VEHICLE-
-f-
—OFF VEHICLE

\ Inspection point
and

\ reference page

Condition
•

Electronic control system Prelim-
inary
Hydraulic
control
system
Power train \ Inspection point
and

\ reference page

Condition
•
7B-66

m CO I m r--
7B-63

i
cn to I m
Section

4B

|

Section

4B

|

ID to i m
CO CO 1 CD
7B-68
|
en CO 1 IX)
to 1 00 r-.
cn CD 1 CO
7B-69
|

1 CD r--
i no
cn s-1 m
Section
4B

r*-cn
S-1 CD h-
"=1-
rJ CO
7 CD r-
(XI o
1 m
cn CM 1 CD
7B-107

|
CD
7 CD 7 m
I
7B-113
I
CO CM
7 CO r-.
m cn
7 CO r-.
cn
7 DO r-
CM CM
7 CO

|
7B-126

7 00 r-
CO 7 cn
1*-r*-
7 m r-
\ Inspection point
and

\ reference page

Condition
•
Brake

light
switch

|

Inhibitor

switch

|

Mode

switch

|

1
CO. •o o X
Idle

switch

Throttle

sensor

|

Water

temp,

switch

|
0 tn c 0) cn
s
ffi
Q tn 01 o Hi >
Pulse

generator

|

"a o c 0) a to CM
TJ O CL ID s CO C\l 3-4

solenoid

|

Lock-up
solenoid

I

ATF

level
and
condition

|

Selector

lever

m Xj CO CJ 03
1 sz
Idle
speed
and
Ignition
timing

Control

valves

Accumulators
Oil
pump
Hydraulic

circuit

Torque

converter

Forward

clutch
Coasting
clutch

Reverse

clutch
JT O
u TT ro 2-4

brake
band
and

servo
$ 2
B cn cii > £ "O C CO
o
XI y
o >. CO S cb a O
One-way

clutch

2

s CI Cn tz JC 5 0-
Planetary

gear

Differential

assembly
Accelerating

Vehicle does
not
move
in
D,
S,
L,
or R
range
O O O O O O O O O O 0

Accelerating

Vehicle moves
in N
range -0 0 -—

Accelerating
Excessive creep
-0 O O -—

Accelerating
No creep
at all
O o o o
o
G 0 O O

Shifting

|

No shift
O O o
o
0 O 0 0
o
o O

Shifting

|
Abnormal shift sequence
0 o O O 0
o
o 0 O o o 0 O

Shifting

|
Frequent shifting 0 o 0 0 o 0 O O 0

Shifting

|

Excessively high
or
low
shift point 0 o 0 O 0 0 o 0 O 0 0
Shifting

|

No lock-up
0 o 0 0 o 0 O O o O

Shifting

|

No kick-down o o o o

Slipping

Engine
run
away
or
slip when
starting vehicle 0 o 0 O o O

Slipping
Engine
run
away
or
slip when
up-
or
down-shifting o o o 0 o O 0 0 O
8 n cn 4S SI V)
Excessive
N to D or N to R

shift shock o O o o o O
8 n cn 4S SI V)
Excessive shift shock when
up-

shifting
or
downshifting o o o o 0 0 0 8 n cn 4S SI V) Excessive shift shock when
changing range 0 0 o 0 o

j
Noise

Transaxle noisy
in N or P

range o o 0 O

j
Noise

Transaxle noisy
in D, S, L,
or

R range o 0 0 O

I
Others

j

No engine braking o O o 0 o o

I
Others

j

No mode change o 0 o o o o o o o
O
o
0

I
Others

j
Transaxle overheats
o o
0 o 0 o 0

I
Others

j
Vehicle moves
in
"P",
or
park-ing gear
not

disengaged when
"P"
is
dis-
engaged
0 O

I
Others

j

Hold indicator flashes o
0
o
0
o
O
o — — —
I
Others

j

Engine will
not
start
o
o
O — — —
76G07B-014
7B—14

7B TROUBLESHOOTING (G4A-EL)
Retrieval Procedure
1. Locate the service connector.
86U07B-019
76G07B-214

11 IDLFC
5» O | || KICK DOWNS* _ If, DEPRESS
|[BRAKE UORRSW
MNMWE STF *
° M CRUISE CONTROL SW
CDS®> *• PI ^ SPEED DROPS
Gf Aft
•
OO ou
I I
w

6019 HI NOW* XIKI
CO , LTQ
MUX
IN
JAP"
76G07B-016
2. Ground the ground connector of the EC-AT
Tester.
3. Connect the 6-pin connector of the EC-AT Tester
to the service connector.
Note
The service connector is blue-colored con-
nector.
4. Ground the 1 pin service connector.
Note
The service connector is blue-colored con-
nector.
5. Turn the ignition switch ON.
6. Check that "88" flashes on the digital display and
the buzzer sounds for three seconds after turning
the ignition switch ON.
7. If "88" does not flash, check the service connec-
tor wiring.
8. If "88" flashes and the buzzer sounds continuously
for more than 20 seconds, check wiring to 2M ter-
minal of the EC-AT control unit for short-circuit then
replace the EC-AT control unit and repeat steps
3 and 4.
9. Note the code numbers and check for the causes
by referring to the Inspection Procedure shown on
pages 7B—19 to 7B—21, repair as necessary.
Note
After repairs are made, recheck for code num-
bers by performing the "After-repair
procedure."
7B—18

TROUBLESHOOTING (G4A-EL) 7B
79G07C-068

Drive at 50
km/h
(31
mph)
Kick-down
Stop
the
vehicle
79G07C-069
After-repair Procedure
1. Cancel the memory of malfunctions by disconnect-
ing the negative battery terminal for at least five sec-
onds, then reconnect it.
2. Remove the EC-AT tester if it is connected.
3. Drive the vehicle at 50 km/h (31 mph), then de-
press the accelerator pedal fully to activate kick-
down. Stop the vehicle gradually.
KICK goimsv
BRAKE LIGHTS*
CRUISE CONTROL
C V,. DEPRESS FULL*
Ox
azsa
ORUti rpn
"J
i"
•
rm uu

£ZL ofF

4. Reconnect the EC-AT tester to the 6-pin service
connector.
5. Ground the 1 -pin service connector with a jumper
wire.
6. Turn the ignition switch ON.
7. Check that no code numbers are displayed.
79G07C-070
Inspection Procedure
No. 06 code display (Vehicle speed sensor)
76G07B-017
7B-19