1987 MAZDA 626 brake

4C INTAKE AIR SYSTEM
Installation Note
Water hose spring clamps
Face the clamp end as shown in the figure.
Gasket
Use new gaskets at the intake manifold, dynamic
chamber, and throttle body.
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• . v 1
Engine 1 Ml' ' •-
hanger ^ •
• i::£?^Solenoid valve bracket
Air cleaner. r^I. ^jUvW;
Th V
Ground harnesses
Make sure that the ground harnesses are tightened
securely at the following positions.
(1) Air cleaner upper case
(2) Solenoid valve braket
(3) Engine hanger
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Solenoid valve connectors
Connect the solenoid valve connectors at the posi-
tions shown in the figure.
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Inspection after installation
1. After completing installation, fill up the engine with
the specified engine coolant.
2. Warm up the engine and run it at idle.
3. Check for any vacuum, coolant, or fuel leaks.
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4C-38

CONTROL SYSTEM 4C
7. Make sure that the throttle valve is fully closed.
8. Check that the BLUE wire voltage is within the
specified range.
9. Adjust the throttle sensor if necessary
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10. Open the throttle valve fully.
11. Check that BLUE wire voltage is within the speci-
fied range.
12. If not correct, replace the throttle sensor.
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13. Turn the ignition switch OFF.
14. Disconnect the SST and reconnect the throttle sen-
sor connector.
15. Disconnect the negative battery terminal and de-
press the brake pedal for 5 seconds to eliminate
the malfunction memory from the control unit.
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Adjustment
1. Perform steps 1 to 7 in the inspection procedure.
2. Connect the voltmeter to the BLUE wire.
3. Loosen the throttle sensor mounting screw.
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4C-105

4C CONTROL SYSTEM
4. Make sure that the throttle valve is fully closed.
5. Turn the throttle sensor so that the BLUE wire volt-
age indicates within the specified closed range.
6. Tighten the throttle sensor mounting screw.
7. Recheck that the BLUE wire voltage is within the
specified range.
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8. Turn the ignition switch OFF.
9. Disconnect the SST and reconnect the throttle sen-
sor connector.
10. Disconnect the negative battery terminal and de-
press the brake pedal for 5 seconds to eliminate
the from the malfunction memory from the control
unit.
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4C-106
IDLE SWITCH
Inspection
1. Disconnect the idle switch connector.
2. Check continuity between the switch and a ground.
Throttle valve condition Continuity
Fully closed Yes
Open No
3. If not correct, check condition of the wiring harness
of the idle switch. Replace the idle switch and throt-
tle body as an assembly, if necessary.
WATER THERMO SWITCH
Inspection
1. Remove the switch from the radiator.
2. Place the switch in water with a thermometer and
heat the water gradually.
3. Check for continuity of the switch with an
ohmmeter.
Coolant temp. Continuity
More than approx. 17°C (63°F) Yes
Less than approx. 10°C (63°F) No
4. If not correct, replace the water thermo switch.

ALTERNATOR 5
Warning
Disconnect the nagative battery terminal when disconnect or reconnect B terminal.
TEST 1
1. Disconnect the alternator connector (2-pin).
2. Connect the SST.
4. Connect the red clip of the adapter harness to the battery
(
+
),
and check that the red
lamp and green lamp illuminate.
5. Start the engine and check that both lamps go off.
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TEST 2
1. Connect an ammeter (75A min.) between the wire and the B terminal.
2. Turn all headlights and accessories on, and depress the brake pedal.
3. Start the engine and check that output current is 70A (RF-CX: 75A) or more at
2,500—3,000 rpm of the engine speed.
Caution
Do not ground the B terminal.
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B terminal
5-25

5 ALTERNATOR
TEST 3
1. Turn all electric loads off and release the brake pedal.
2. Check that output current is 5A or more at 2,500—3,000 rpm of the engine speed.
B • , \ B terminal
.w/^y
w
86U05X-013
TEST 4
1. Turn all electric loads off and release the brake pedal.
2. Check that output voltage between S terminal and ground is within specification at
2,500—3,000 rpm of the engin speed.
Voltage: 14.1—14.7V
S terminal
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TEST 5
1. Turn the ignition switch ON.
2. Check that L terminal voltage is within specification.
Voltage: 1—5 V
- L terminal
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5—26

ALTERNATOR 5
TEST 6
1. Turn the ignition switch ON.
2. Turn all electric loads off and release
the brake pedal.
3. Check that voltage between S terminal
and ground is battery voltage.
S terminal
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76G05X-030
86U05X-074
REMOVAL (GASOLINE)
Remove in the sequence shown in the figure.
1. Disconnect the negative battery terminal.
2. Disconnect the wire and connector from the al-
ternator.
3. Remove the bolts.
4. Remove the V-belt.
-5. Remove the alternator to upper side (LHD) or lower
side (RHD).
REMOVAL (DIESEL)
1. Disconnect the negative battery terminal.
2. Remove the right hand driveshaft (Refer to Sec-
tion 9).
3. Disconnect the wire and connector from the al-
ternator.
4. Loosen the idle pulley nuts and remove the drive
belts.
5. Remove the bolts and remove the alternator from
under the vehicle.
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5-27

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.
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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
AUTOMATIC TRANSAXLE
(Electronically Controlled and 4-Speed)
OUTLINE 7B— 2
SPECIFICATIONS 7B— 2
COMPONENT LOCATION 7B— 3
STRUCTURAL VIEW 7B— 5
OPERATION OF COMPONENTS 7B— 6
FLUID PASSAGE LOCATION 7B— 9
TROUBLESHOOTING (G4A-EL) 7B— 12
GENERAL NOTE 7B— 12
STEP 1
(WARNING CODE RETRIEVAL) 7B— 15
STEP 2
(PRELIMINARY INSPECTION) 7B— 22
STEP 3 (SIGNAL INSPECTION) 7B— 24
STEP 4 (STALL TEST) 7B— 27
STEP 5 (TIME LAG TEST) 7B— 30
STEP 6 (OIL PRESSURE TEST) 7B— 31
STEP 7 (ROAD TEST) 7B— 34
TROUBLESHOOTING (G4A-HL) 7B— 41
GENERAL NOTE 7B— 41
STEP 1
(PRELIMINARY INSPECTION) 7B— 44
STEP 2 (ELECTRICAL
SYSTEM INSPECTION) 7B— 47
STEP 3 (STALL TEST) 7B— 49
STEP 4 (TIME LAG TEST) 7B- 52
STEP 5 (ROAD TEST) 7B— 53
STEP 6 (OIL PRESSURE TEST) 7B— 58
ELECTRICAL SYSTEM
COMPONENTS 7B— 63
MODE SWITCH (G4A-EL) 7B— 63
HOLD SWITCH (G4A-EL) 7B— 63
OD OFF SWITCH (G4A-HL) 7B— 64
INHIBITOR SWITCH 7B- 65
WATER TEMPERATURE SWITCH 7B— 66
FLUID TEMPERATURE SWITCH
(G4A-EL) 7B— 66
BRAKE LIGHT SWITCH
(G4A-EL) 7B— 66
KICK-DOWN SWITCH (G4A-HL) 7B— 67
PULSE GENERATOR (G4A-EL) 7B- 68
VEHICLE SPEED SENSOR
(G4A-EL) 7B— 68
CRUISE CONTROL SWITCH
(CRUISE CONTROL UNIT) 7B— 68
IDLE SWITCH AND THROTTLE
SENSOR (G4A-EL) 7B— 68
OD RELEASE SOLENOID
VALVE (G4A-HL) 7B— 68
SOLENOID VALVES (G4A-EL) 7B— 69
NO LOAD SIGNAL (G4A-EL) 7B— 69
MODE, AND HOLD INDICATOR
LIGHT (G4A-EL) 7B— 69
OD OFF INDICATOR LIGHT
(G4A-HL) 7B— 69
EC-AT CONTROL UNIT
(G4A-EL) 7B— 69
ON-VEHICLE MAINTENANCE 7B— 71
AUTOMATIC TRANSAXLE
FLUID (ATF) 7B— 71
SELECTOR LEVER 7B— 72
THROTTLE CABLE 7B— 73
CONTROL VALVE BODY 7B— 77
OIL STRAINER 7B— 79
ADJUSTMENT OF 2-4 BRAKE
BAND 78— 80
REPLACEMENT OF
DRIVESHAFT OIL SEAL 7B— 80
OIL COOLER 7B— 81
GOVERNOR (G4A-HL) 7B— 82
REMOVAL 7B— 83
PRECAUTION 7B— 83
DISASSEMBLY 7B— 88
DISASSEMBLY-STEP 1 7B— 88
DISASSEMBLY-STEP 2 7B— 94
DISASSEMBLY-STEP 3 7B— 99
DISASSEMBLY-STEP 4 7B—103
INSPECTION AND REPAIR 7B—107
PRECAUTION 7B—107
TORQUE CONVERTER 7B—107
OIL PUMP 7B—108
CLUTCH ASSEMBLY 7B—113
SMALL SUN GEAR AND
ONE-WAY CLUTCH 7B—122
ONE-WAY CLUTCH AND
CARRIER HUB ASSEMBLY 7B-126
3-4 CLUTCH 7B—128
2-3 ACCUMULATOR 7B—132
GOVERNOR ASSEMBLY
(G4A-HL) 7B-133
LOW AND REVERSE BRAKE 7B—134
2-4 BRAKE BAND 7B—135
BAND SERVO 7B—135
OTHER INSPECTION 7B—135
CONTROL VALVE BODY
(G4A-EL) 7B-136
CONTROL VALVE BODY
(G4A-HL) 7B-155
DIFFERENTIAL 7B—177
OUTPUT GEAR 7B—181
IDLE GEAR 7B—182
BEARING COVER ASSEMBLY 7B—185
BEARING HOUSING 7B—186
ASSEMBLY 7B-187
PRECATION 7B—187
ASSEMBLY-STEP 1 7B—187
ASSEMBLY-STEP 2 7B—197
ASSEMBLY-STEP 3 7B—202
ASSEMBLY-STEP 4 7B—208
INSTALLATION 7B—215
TORQUE SPECIFICATIONS 7B—215
HYDRAULIC CIRCUIT (G4A-EL) 7B—221
HYDRAULIC CIRCUIT (G4A-HL) 7B—239
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