1987 MAZDA 626 brake

7B ELECTRICAL SYSTEM COMPONENTS
Terminal Connected to Voltage Condition
1J — — —
1K — — —
1L (Input) Idle switch Below 1.5V At idle 1L (Input) Idle switch Approx. 12V Other speeds
1M — — —
1N (Input) Brake light switch Approx. 12V Brake pedal depressed 1N (Input) Brake light switch Below 1.5V Brake pedal released
10 (Input) Throttle sensor
Approx. 5V Ignition switch ON 10 (Input) Throttle sensor Below 1,5V Ignition switch OFF
1P (Input)
Throttle sensor
Approx. 0.5—4.3V Throttle valve fully closed to fully open
1Q (Input) Vehicle speed sensor
Approx. 4.5V During driving
1Q (Input) Vehicle speed sensor Approx. 4.5V or below 1.5V Vehicle stopped
1R (Ground) Throttle sensor Below 1,5V —
1S (Input) Pulse generator Approx. 12V Engine running 1S (Input) Pulse generator Below 1,5V Engine stopped
1S (Ground) Pluse generator Below 1.5V —
2A (Battery power) Battery Approx. 12V Ignition switch ON 2A (Battery power) Battery Below 1,5V Ignition switch OFF
2B (Ground) Body ground Below 1,5V —
2C (Memory power) Battery Approx. 12V —
2D (Ground) Body ground Below 1,5V —
2E (Output) 1-2 shift solenoid valve Approx. 12V
Refer to page 7B—26 of solenoid valve
operation table
2E (Output) 1-2 shift solenoid valve Below 1.5V Refer to page 7B—26 of solenoid valve
operation table
2F (Output) 2-3 shift solenoid valve Approx. 12V
Refer to page 7B—26 of solenoid valve
operation table
2F (Output) 2-3 shift solenoid valve Below 1,5V
Refer to page 7B—26 of solenoid valve
operation table
2G — — —
2H (Output) 3-4 shift solenoid valve Approx. 12V Refer to page 7B—26 of solenoid valve operation table 2H (Output) 3-4 shift solenoid valve Below 1.5V
Refer to page 7B—26 of solenoid valve operation table
21 — — —
2J (Output) Lock-up solenoid valve Approx. 12V Lock-up 2J (Output) Lock-up solenoid valve Below 1,5V Other
2K (Output) Hold indicator Below 1,5V Hold mode 2K (Output) Hold indicator Approx. 12V Other modes
2L (Output) Mode indicator Approx. 12V Hold mode 2L (Output) Mode indicator Below 1,5V Power or economy mode
2M (Output) EC-AT Tester
(malfunction code)
Approx. 12V Normal
2M (Output) EC-AT Tester
(malfunction code) Below 1,5V If malfunction present 2M (Output) EC-AT Tester
(malfunction code) Code signal Self-diagnosis check connector grounded
2N — — —
20 (Input) Fluid temperature switch Below 1,5V Above 150°C (302°F) 20 (Input) Fluid temperature switch Approx. 10—12V Below 143°C (289°F)
2P (Input) EC-AT check connect Approx. 12V —
76G07B-084
7B-70

ON-VEHICLE MAINTENANCE 7B
ON-VEHICLE MAINTENANCE
AUTOMATIC TRANSAXLE FLUID (ATF)
Inspection for Fluid Leaks
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 (G4A-EL)
7. Oil filler tube
8. Throttle cable
9. Bearing cover
76G07B-085
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 (G4A-EL)
17. Blind plugs
18. Governor cover (G4A-HL)
Inspection of Level
1. Apply the parking brake and position wheel chocks
to prevent the car from rolling forward.
Note
Place the car on a flat, level surface.
2. Run the engine so that the automatic transaxle fluid
reaches specified temperature.
3. While the engine is idling, shift the select lever from
P to L or P to 1 and back again.
4. Let the engine idle.
5. Shift the select lever to P.
76G07B-086
7B—71

7B ON-VEHICLE MAINTENANCE
86U07B-091
76G07B-101
76G07B-102
3. Install the magnets on the oil pan as shown and
install the oil pan along with a new gasket.
Tightening torque:
8—11 Nm (80—110 cm-kg, 69—95 in-lb)
4. Add ATF, and with the engine idling, check the fluid
level and for leaks. (Refer to page 7B—71)
ADJUSTMENT OF 2-4 BRAKE BAND
1. Remove the oil pan. (Refer to page 7B—79)
2. Adjust the 2-4 brake band. (Refer to page 7B—211)
REPLACEMENT OF DRIVESHAFT OIL SEAL
Replace the oil seal in the same manner as for the
manual transaxle. (Refer to page 7A—9)
86U07B-094
7B-80

7B DISASSEMBLY
DISASSEMBLY-STEP 2
Components
1. Piston stem
2. Snap ring
3. Clutch assembly
4. 2-4 brake band
5. Small sun gear and one-way clutch
6. Anchor strut and shaft
7. Servo
8. One-way clutch and carrier hub assembly
86U07B-135
—Low and reverse brake—
9. Retaining plate
10. Drive and driven plates
11. Internal gear
12. O-ring
13. 3-4 clutch assembly
14. Turbine shaft
7B—94

DISASSEMBLY 7B
Procedure
1. Remove the piston stem from the servo.
86U07B-136
2. Remove the clutch assembly.
(1) Remove the turbine shaft snap ring.
86U07B-137
(2) Pull the reverse and forward drum and remove
the clutch assembly.
86U07B-138
3. Remove the 2-4 brake band.
Note
Use a piece of wire to secure the brake band
so that it is not damaged by being stretched.
86U07B-139
7B—95

DISASSEMBLY 7B
86U07B-144
86.U07B-145
86U07B-146
(2) Remove the one-way clutch together with the
carrier hub assembly.
8. Remove the low and reverse brake assembly.
(1) Remove the snap ring.
(2) Remove the retaining plate and the drive and
driven plates.
9. Remove the internal gear.
(1) Remove the snap ring.
36U07B-147
7B-97

DISASSEMBLY 7B
DISASSEMBLY-STEP 3
Component
86U07B-151
1. Transaxle case
2. Output shell
3. Snap ring
4. Spring and retainer assembly
5. Low and reverse brake piston
6. Plug, washer, spring, and detent ball
7. Bracket
8. Manual shaft and manual plate
9. Actuator support
10. Parking assist lever
11. Parking pawl
7B—99

7B DISASSEMBLY
1. Remove the bolts; then remove the transaxle case
by tapping lightly with a plastic hammer.
86U07B-153
3. Remove the low and reverse brake piston
(1) Install the SST.
(2) Compress the spring and retainer assembly.
86U07B-154
(3) Remove the snap ring with snap ring pliers;
then remove the spring and retainer assembly.
86U07B-155
7B—100