1987 MAZDA 626 lock

INSTALLATION 7A
25. Install the grounds to the transaxle case.
Tightening torque:
8—11 N-m (80—115 cm-kg, 69—100 in-lb)
26. Connect the speedometer cable.
76G07A-067
76G07A-068
76G07A-069
76G07A-070
27. Install the intercooler pipe and hose. (RF-CX)
Tightening torque:
19—26 Nm (1.9—2.6 m-kg, 14—19 ft-lb)
28. Install the brake vacuum pipe. (RF-CX)
Tightening torque:
8—11
N
m (80—110 cm-kg, 69—95 in-lb)
29. Connect the brake vacuum hose. (RF-CX)
30. Install the air cleaner assembly and connect the
air flow meter connector.
Tightening torque:
16—27 Nm (1.6—2.8 m-kg, 12—20 ft-lb)
31. Connect the distributor lead.
32. Connect the main fuse block.
Tightening torque:
8—11 N-m (80—110 cm-kg, 69—95 in-lb)
33. Install the battery carrier and battery.
34. Add the correct quantity of the specified transaxle
oil.
Specified
Type
A.T.F.: DEXRON II
Above 0°F:
API: GL-4 or GL-5
SAE 80W-90 or SAE 90
Capacity:
3.35 liters (3.6 US qt, 3.0 Imp qt)
7A-57

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

TROUBLESHOOTING (G4A-EL) 7B
STEP 1 (WARNING CODE RETRIEVAL)
Self-diagnosis Function
The self-diagnosis system, which is integrated in the EC-AT control unit, diagnoses malfunction of the
main sensors (input) and solenoid valves (output), and the EC-AT control unit.
Malfunctions which have happened or are continuing are memorized in the EC-AT control unit as specific
codes.
The EC-AT Tester is used to retrieve these warning codes. Each malfunction is indicated by a code
number and buzzer as shown the table below.
Code Number
Code number Location of malfunction Buzzer
06 Vehicle speed sensor or circuit JliUli c
12 Throttle sensor or circuit rui r
55 Pulse genelator or circuit nnnnruiii r
60 1-2 shift solenoid valve or circuit jinnnnn r
61 2-3 shift solenoid valve or circuit nnnnnruL_[
62 3-4 shift solenoid valve or circuit nnnnnn nn r
63 Lock-up solenoid valve or circuit
_ 1 0,4 sec
rnnnnn ihi J r1.2sec J | _1.fi sec
76G07B-213
EC-AT Tester
Assembly of EC-AT tester
1. Set the plate (49 G019 912) onto the EC-AT tester
body (49 G019 901 A).
2. Connect the adapter harness (49 G019 911) to
the EC-AT tester body.
3. Select the code select switch to A position.
4. Select the select switch to NEW 626 position.
76G07B-603
7B—15

TROUBLESHOOTING (G4A-EL) 7B
76G07B-020
No. 63 code display (Lock-up solenoid valve)
76G07B-021
7B—21

TROUBLESHOOTING (G4A-EL) 7B
7. Oil Leakage
Check for oil leakage.
(1) Warm up the ATF.
(2) Apply the parking brake and block the wheels
to prevent the vehicle from rolling.
(3) Shift the selector lever to R range.
(4) Check if oil leaks from the following oil seals
or gaskets.
(5) If oil leaks, replace the oil seal or gasket.
76G07B-026
Check for fluid leaks; the following figure shows the locations where fluid leakage may possibly occur.
1. Oil pan
2. Control valve body cover
3. Oil pump
4. Inhibitor switch
5. Speedometer driven gear
6. Pulse generator
7. Oil filler tube
8. Throttle cable
9. Bearing cover
10. Driveshaft
11. Square head plug
12. Transaxle case
13. Drain plug
14. Oil cooler return pipe
15. Oil cooler outlet pipe
16. Fluid temperature switch
17. Blind plugs
76G07B-027
7B—23

TROUBLESHOOTING (G4A-EL) 7B
Item Indication Condition Possible cause
BRAKE LIGHT SW ON Brake pedal depressed Brake light switch or
wiring BRAKE LIGHT SW
OFF Brake pedal released
Brake light switch or
wiring
WATER TEMP SW ON Coolant temperature 72°C (162°F) or above Water temp switch or wiring WATER TEMP SW
OFF Coolant temperature lower than 65°C (149°F)
Water temp switch or wiring
ATF TEMP SW ON ATF temperature 150°C (302°F) or above Fluid temperature switch or wiring ATF TEMP SW
OFF ATF temperature lower than 143°C (289°F)
Fluid temperature switch or wiring
CRUISE CONTROL SW Not used — —
Input (Digital display)
THROTTLE SENSOR
EC-AT control unit terminal voltage All the time Throttle sensor, idle switch or wirings
VEHICLE SPEED*
Vehicle speed calculated from speed sensor signal
All the time Vehicle speed sensor, speedometer cable, or wiring
DRUM SPEED* Drum speed All the time Pulse generator or wirings
Output (Light)
1-2 SOLENOID VALVE*
ON
Refer to page 7B—26 solenoid valve operation table
Control unit, 1-2 shift sol., or wiring 1-2 SOLENOID VALVE* OFF
Refer to page 7B—26 solenoid valve operation table
Control unit, 1-2 shift sol., or wiring
2-3 SOLENOID VALVE*
ON Refer to page 7B—26 solenoid valve operation table Control unit, 2-3 shift sol., or wiring 2-3 SOLENOID VALVE* OFF
Refer to page 7B—26 solenoid valve operation table Control unit, 2-3 shift sol., or wiring
3-4 SOLENOID VALVE*
ON
Refer to page 7B—26 solenoid valve operation table
Control unit, 3-4 shift sol., or wiring 3-4 SOLENOID VALVE* OFF
Refer to page 7B—26 solenoid valve operation table
Control unit, 3-4 shift sol., or wiring
LOCK-UP SOLE-NOID VALVE*
ON Lock-up condition Control unit, lock-up sol., or wiring LOCK-UP SOLE-NOID VALVE* OFF Non-lock-up condition
Control unit, lock-up sol., or wiring
HOLD INDICATOR ON Hold mode Control unit, Hold switch, or wiring HOLD INDICATOR OFF Other modes
Control unit, Hold switch, or wiring
MODE INDICATOR ON Power or economy mode Control unit, hold switch, mode switch, or wiring MODE INDICATOR
OFF Hold mode
Control unit, hold switch, mode switch, or wiring
NO LOAD SIGNAL Not used — —
76G07B-028
7B-25

7B TROUBLESHOOTING (G4A-EL)
Item Indication Condition
OUTPUT (Digital display)
1
1
st gear position
GEAR* 2 2nd gear position GEAR*
3 3rd gear position
4 Overdrive (OD) gear position
86U07B-033
Note
a) The back-up condition is as following condition
S range, hold mode, and the accelerator pedal depressed fully.
b)The * marked items should be checked during the engine running or driving.
Comprehensive Usage
The EC-AT Tester can be used to inspect slippage of friction elements, shift points, and shift sequence
during the road test.
The inspection procedure is shown in STEP 7 (ROAD TEST).
Solenoid valve operation table
RANGE GEAR SOLENOID VALVES RANGE GEAR 1-2 2-3 3-4 Lock-up
P Non ON
R Reverse ON
N Below aDDrox. 18 km/h (11 mDh) ON N Above approx. 18 km/h (11 mph) ON
1st ON ON
2nd ON ON ON
Below approx. 40 km/h (25 mph)
D 3rd Above approx. 40 km/h (25 mph)
Lock-uo OFF ON Above approx. 40 km/h (25 mph) Lock-up ON ON ON
OD Lock-up OFF ON ON OD Lock-uo ON ON ON ON
1st ON ON
S 2nd ON ON ON S
3rd Below approx. 40 km/h (25 mph) 3rd Above approx. 40 km/h (25 mph) ON
1st ON ON
L 2nd Below approx. 110 km/h (68 mph) ON ON 2nd Above approx. 110 km/h (68 moh) ON
2nd ON ON ON
D 3rd Below approx. 40 km/h (25 moh) 3rd Above approx. 40 km/h (25 moh) ON
2nd ON ON
HOLD S 3rd Below approx. 40 km/h (25 mph) 3rd Above approx. 40 km/h (25 mph) ON
1st ON
L 2nd Below approx. 110 km/h (68 mph) ON ON 2nd Above approx. 110 km/h (68 mph) ON
7B—26

7B TROUBLESHOOTING (G4A-EL)
Procedure
86U07B-034
1. Block the wheels and apply the parking brake.
2. Connect a tachometer to the engine.
3. Shift the selector lever to R.
4. Firmly depress the foot brake with the left foot, and gently depress the accelerator pedal with the right.
5. When the engine speed no longer increases, quickly read the engine speed and release the ac-
celerator.
Caution
Steps 4 ->• 5 must be done within 5 seconds.
6. Move the selector lever to N and let the engine idle for at least one minute.
Caution
The reason for idling for at least one minute is to cool the ATF and to prevent deterioration
of the fluid.
7B-28