1992 MAZDA PROTEGE sensor

GI CAUTION
/
_____--__.. -I
OWGIX-028
2. Check the terminals of waterproof connectors from the con-
nector side, as they cannot be accessed from the wire har-
ness side.
Caution
l Use fine wire to prevent damage to the terminal.
l Do not damage the terminal when inserting the
tester lead.
.- - 9MUGIX-027
9MUGIX-028
Same as the female type.
I
9MUGK031
Terminals
Inspection
Pull lightly on individual wires to check that they are secured
in the terminal.
Replacement of terminals
Use the appropriate tools to remove the terminal as shown.
When installing the terminal, be sure to insert it until it locks
securely.
< Female >
Insert a thin piece of metal from the terminal side of the con-
nectar, and then, with the terminal locking tab pressed down,
pull the terminal out from the connector.
< Male >
Sensors, Switches, and Relays
Handle sensors, switches, and relays carefully. Do not drop
them or strike them against other parts.
GI-14

Bl ON-VEHICLE MAINTENANCE
Harnesses
1. Disconnect the harness connectors shown in the figure.
DISTRIBUTOR
OXYGEN SENSOR
7.8-l 1 N.m (80-I 10 cm-kg, 69-95 in-lb)
I
INJECTOR
GROUND
/
7.8-11 N-m
(80-110 cm-kg,
HEAT GAijijE

Cylinder head bolt
1, Loosen the cylinder head bolts in two or three steps in the
order shown in the figure.
2. Remove the cylinder head bolts.

REMOVAL I31
Step 2
2311081-O: ii
1.
Disconnect the harness connectors shown in the figure.
Removal note
P/S oil pump
Caution
l Do not damage the hoses.
1. Remove the P/S oil pump with the hoses still connected.
2. Position the pump away from the engine and affix it with wire.
A/C compressor (if equipped)
Caution
l Do not damage the hoses.
1, Remove the A/C compressor with the hoses still connected.
2. Position the compressor away from the engine and affix it
with wire.
ALTERNATOR
OIL PRESSURE SWITCH
GROUND THROTTLE SENSOR
------- I
INJECTOR
NEUTRAL SWITCH (MTX)

Bl INSTALLATION
Step 5
1. Connect the harness connectors shown in the figure.
GROUND ALTERNATOR
OIL PRESSURE SWITCH
I- THFOTTLE SENSOR
NEUTRAL SWITCH (MTX)
IGNITION COIL
$A_c_K;u_p LIGHT SWITCH
____------- ;
Step 6
Torque Specifications
7.8-11 N.m (80-110 cm-kg, 89-95 in-lb)
19-25 (1.9-2.6, 14-19)
2.9-5.9 N.m
(30-60 cm-kg, 26-52 in-lb)
7.8-11 N.m
(80-l 10 cm-kg,
6.4-9.3 N.m 37-52
(3.8-5.3, 27-38)
24-35
(2.4-3.6, 17-26)
7.8-11 N.m 160-110 cmika, 69-95 in-lb) ‘-- -- -..’ ‘-=’ -’ / 166-96 r?m.ka.
66-82 in-lb) 69-95 in-lb)
N.m (m-kg, ft-lb -- OBUOBl-1E
Bl-100

INSTALLATION
OWOBX-27!
Resonance chamber
1. Install the resonance chamber.
Tightening torque:
7.8-l 1 N-m (80-I 10 cm-kg, 69-95 in-lb)
Undercover and side cover
1. Install the undercover and side cover.
Steps After Installation
1. If the engine oil was drained, fill with the specified amount and type of engine oil.
(Refer to Section D.)
Accelerator cable
1. Install the accelerator cable.
2. Adjust the cable deflection by turning nut @.
Deflection: I-3mm (0.04-0.12 in)
Battery duct, battery carrier, and battery
1. Install the battery duct.
Tightening torque:
7.8-l 1 N-m (80-l 10 cm-kg, 69-95 in-lb)
2. Install the battery carrier.
Tightening torque:
7.8-11 N.m (80-110 cm-kg, 69-95 in-lb)
3. Install the battery and the battery bracket.
Tightening torque:
2.9-5.9 N*m (30-60 cm-kg, 26-52 in-lb)
Air cleaner assembly
1. Install the air cleaner assembly.
lightening torque
@: 19-25 N-m (1.9-2.6 m-kg, 14-19 ft-lb)
@: 7.8-l 1 N-m (80-I 10 cm-kg, 69-95 in-lb)
2. Connect the airflow sensor connector.
2. Fill the radiator with the specified amount and type of engine coolant.
(Refer to Section E.)
3. If the transaxle oil was drained, fill with the specified amount and type of transaxle oil.
(Refer to Sections J, K.)
4. Connect the negative battery cable.
5. Start the engine and check the following
(1) Engine oil, transaxle oil, and engine coolant leakage.
(2) Ignition timing, idle speed. (Refer to page 61-8.)
(3) Operation of emission control system.
6. Perform a road test,
7. Recheck the engine oil and engine coolant levels.
.-’
23UOBl-057
81-102

REMOVAL
0311082-046
Removal note
P/S oil pump and bracket
Caution
l Do not damage the hoses.
1. Remove the P/S oil pump and bracket with the hoses still
connected.
2. Position the pump away from the engine and affix it with wire.
A/C compressor (if equipped)
Caution
l Do not damage the hoses.
1. Remove the A/C compressor with the hoses still connected.
2. Position the compressor away from the engine and affix it
with wire.
Step 2
1. Disconnect the harness connectors shown in the figure.
OIL PRESSURE SWITCH ATX
THROTTLE INHIBITOR SWITCH
ALTERNATOR
I SENSOR 1
II
rl (MTX)
-03UOB2-05( .-,’

92 INSTALLATION
RESOiANCE CHAMBER
03UOBZ-154
Accelerator cable
1. Install the accelerator cable.
2. Adjust the cable deflection by turning nut A.
Deflection: 1-3mm (0.04-0.12 in)
Battery duct, battery carrier, and battery
1. Install the battery duct.
Tightening torque:
7.8-l 1 Nlm (80-l 10 cm-kg, 69-96 In-lb)
2. Install the battery carrier.
Tightening torque:
7.8-l 1 N*m (80-l 10 cm-kg, 69-96 in-lb)
3. Install the battery and the battery bracket.
Tightening torque:
2.9-5.9 N*m (30-60 cm-kg, 26-52 in-lb)
Air cleaner assembly
1. Install the air cleaner assembly.
Tightening torque
@: 19-25 N#m (1.9-2.6 m-kg, 14-19 ft-lb)
@: 7.8-l 1 N*m (80-l 10 cm-kg, 69-95 In-lb)
2. Connect the air flow sensor connector.
Resonance chamber
I, Install the resonance chamber.
Tightening torque:
7.8-l 1 N#m (80-l 10 cm-kg, 69-95 In-lb)
Under cover and side cover
1. Install the under cover and side cover.
Steps After Installation
1. If the engine oil was drained, fill with the specified amount and type of engine oil.
(Refer to Section D.)
2. Fill the radiator with the specified amount and type of engine coolant.
(Refer to Section E.)
3. If the transaxle oil was drained, fill with the specified amount and type of transaxle oil.
(Refer to Sections J2, K.)
4. Connect the negative battery cable.
5. Start the engine and check the following:
(1) Engine oil, transaxle oil, and engine coolant leakage.
(2) ignition timing, idle speed. (Refer to page 82-8.)
(3) Operation of emission control system.
6. Perform a road test.
7. Recheck the engine oil and engine coolant levels.
B2-102
2311082.047

F
FUEL AND EMISSION
CONTROL SYSTEM
INDEX ...........................................
OUTLINE ...................................... ;: 2
SYSTEM DIAGRAM ...................... F-
:
VACUUM HOSE ROUTING
DIAGRAM .................................
WIRING DIAGRAM ....................... F- 6
- 7
ENGINE CONTROL UNIT (ATX) ...... F- 13
SPECIFICATIONS.. ....................... F- 15
COMPONENT DESCRIPTIONS.
...... F- 16
TROUBLESHOOTING GUIDE.. ......... F- 20
ENGINE CONTROL OPERATION
CHART
..................................... F- 20
RELATIONSHIP CHART.. .............. F- 24
USING THIS SECTION .................. F- 25
DIAGNOSTIC INDEX .................... F- 27
PRECAUTION ............................. F- 29
SYMPTOM TROUBLESHOOTING .... F- 30
ENGINE TUNE-UP
.......................... F- 76
PREPARATION ............................
F- 76
BASIC INSPECTION ..................... F- 78
ADJUSTMENT .............................
F- 79
SELF-DIAGNOSIS FUNCTION .......... F- 82
DESCRIPTION .............................
F- 82
PREPARATION
............................
F- 83
SERVISE CODE NUMBER.. ........... F- 83
SWITCH MONITOR FUNCTION ...... F-105
INTAKE AIR SYSTEM.. ................... F-109
COMPONENT PARTS.. ................. F-109
THROTTLE BODY ........................ F-l 12
DYNAMIC CHAMBER ................... F-l 12
INTAKE MANIFOLD ..................... F-l 13
ACCELERATOR PEDAL ................ F-l 14
ACCELERATOR CABLE ................ F-l 14
IDLE SPEED CONTROL (ISC)
SYSTEM ......................................
F-115
DESCRIPTION ............................. F-115
PREPARATION
............................ F-116
SYSTEM OPERATION.. ................. F-l 16
ISC VALVE ................................. F-116
AIR VALVE
................................. F-116
VARIABLE INERTIA CHARGING
SYSTEM (VICS) [DOHC] ................ F-l 17
DESCRIPTION ............................. F-117
SYSTEM OPERATION ................... F-l 18
SHUTTER VALVE ACTUATOR.. ...... F-l 18
SOLENOID VALVE (VICS). ............. F-118
VACUUM CHAMBER.. .................. F-119
FUELSYSTEM .............................. F-l 20
DESCRIPTION
............................. F-l 20
PRECAUTION ............................. F-121
SYSTEM OPERATION.. ................. F-121
FUEL TANK ................................
F-l 23
FUEL FILTER .............................. F-l 24 FUEL PUMP ............................... F-l 25
CIRCUIT OPENING RELAY.. .......... F-129
PRESSURE REGULATOR.. ............ F-129
INJECTOR .................................. F-l 31
PRESSURE REGULATOR
CONTROL SYSTEM.. .................... F-l 34
SOLENOID VALVE (PRESSURE
REGULATOR CONTROL). ............ F-l 35
EXHAUST SYSTEM ........................ F-l 36
COMPONENT PARTS.. ................. F-136
OUTLINE OF EMISSION
CONTROL SYSTEM.. .................... F-l 37
STRUCTURAL VIEW.. ................... F-l 37
POSITIVE CRANKCASE
VENTILATION (PCV) SYSTEM.. ..... F-138
DESCRIPTION .............................
F-l 38
PCV VALVE ................................ F-l 38
EVAPORATIVE EMISSION
CONTROL SYSTEM.. .................... F-l 39
DESCRIPTION ............................. F-l 39
SYSTEM OPERATION.. ................. F-140
SOLENOID VALVE
(PURGE CONTROL) ................... F-140
SEPARATOR ............................... F-l 40
CHECK VALVE (TWO-WAY) ........... F-140
CHECK-AND-CUT VALVE.. ............ F-141
CHARCOAL CANISTER.. ............... F-141
DECELERATION CONTROL
SYSTEM ...................................... F-l 42
DESCRIPTION ............................. F-l 42
DASHPOT .................................. F-142
FUEL CUT CONTROL SYSTEM ....... F-143
DESCRIPTION ............................. F-l 43
PREPARATION ............................ F-l 43
SYSTEM OPERATION.. ................. F-143
DECHOKE CONTROL SYSTEM.. ...... F-145
DESCRIPTION ............................. F-l 45
SYSTEM OPERATION ................... F-l 45
CONTROL SYSTEM ....................... F-l 47
PREPARATION ............................ F-147
STRUCTURAL VIEW.. ................... F-l 48
ENGINE CONTROL UNIT (ECU) ..... F-149
AIRFLOW METER (WITH INTAKE AIR
THERMOSENSOR) ..................... F-168
WATER THERMOSENSOR.. ........... F-168
THROTTLE SENSOR .................... F-l 69
OXYGEN SENSOR.. ..................... F-171
MAIN RELAY (FUEL INJ RELAY) .... F-172
CLUTCH SWITCH (MTX) ............... F-172
NEUTRAL SWITCH (MTX). ............. F-173
POWER STEERING PRESSURE
SWITCH .................................... F-173
WJOFX-001