engine wiring diagram MAZDA PROTEGE 1992 Workshop Manual

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

SELF-DIAGNOSIS FUNCTION
:ODE No. 1 25 (SOLENOID VALVE - PRESSUREREGULATORCONTROL)-BPENGINE
r (
TEP
1
-
2
-
3 I
INSPECTION
Disconnect connector from ECU and check if
battery voltage exists at ECU terminal 2T (MTX)
3M (ATX) wire (G/O) with ignition switch ON
In same condition as Step 1, check if battery
voltage exists at solenoid valve connector
terminal-wire (G/O) ACTION
Yes Check ECU terminal connector for poor -
connection
* If OK, replace ECU CT page F-149
+
If not OK, repair or replace connector
No Go to next step
Yes Repair or replace wire (G/O)
No Go to next step
Check if solenoid valve is OK Yes Check for short or open circuit in wiring
w page F-135 from main relay (FUEL INJ relay) to
solenoid valve
No Replace solenoid valve
I I I
23UOFX-077
:ODE No. 26 (SOLENOID VALVE - PURGE CONTROL)
STEP INSPECTION
Disconnect connector from ECU and check if
battery voltage exists at ECU terminal 2X (MTX)
20 (ATX) wire harness (W/L) with ignition switch
ON Yes
No
In same condition as Step 1, check if battery
Yes
voltage exists at solenoid valve connector
terminal-wire (W/L)
No
Check if solenoid valve is OK
Yes
w page F-140
t- No
--
4 ACTION
Check ECU terminal connector for poor
connection
ti If OK, replace ECU c;p page F-149
e
If not OK, repair or replace connector
Go to next step
Repair or replace wire harness (W/L)
Go to next step
Check for short or open circuit in wiring
from main relay (FUEL INJ relay) to
Circuit Diagram
MTX
I-
FROM
BATTERY
FROM
23UOFX-07 9
F-l 02

Z-Gl-4 Reading Wiring Diagrams
System circuit diagram/connector diagram
l These show the circuits for each system, from the power supply to the ground. The power supply side
is on the upper part of the page, the ground side on the lower part. The diagrams describe circuits with
the ignition switch off.
Below is an explanation of the various points in the diagram.
) Indicates operating conditions for switches.
The prefix letter indicates the system in which
:he connector is used.
JB: Joint box connections
X : Common connectors
A : Charging system/starting system
connectors
B : Engine control system connectors
C : Gauge control system connectors
D : Wiper system connectors
E : Lighting system connectors
F : Signal system connectors
G : Air-conditioning system connectors
H : Transmission control system
connectors
I : Interior lamp system connectors
J : Audio/radio connectors
K : Power window/power door lock system
connectors
L : Remote control mirror system
connectors
M : Sliding sunroof system connectors
N : Power steering/4-wheel steering
system connectors
0 : Anti-lock brake system connectors
P : Power seat/seat heater system
connectors
Cl : Auto cruise control system connectors
R : Auto adjusting suspension system
connectors
S : Passive shoulder belt control/air bag
system connectors
T : Others
Y : Ground connector
- .
1

\\‘
IGNITION SYSTEM l ENGINE CONTROL 9 harness ground is represented differently
:han a unit ground.
Types of grounds Symbol
Harness
I
-
-
-
-
‘“G:
si-
P
7:’
.I
I
I
.i
-
-
-
f
9
Tiii
zs
LL
Y
a
EE
-

Reading Wiring Diagrams Z-GI-7
HARNESS SYMBOLS
DESCRIPTION OF HARNESS
FRONT HARNESS
ENGINE HARNESS
INSTRUMENT PANEL HARNESS
REAR HARNESS
REAR NO.2 HARNE COLOR SYMBOL DESCRIPTION OF HARNESS SYMBOL
(F) INTERIOR LAMP HARNESS (IN)
(El FLOOR HARNESS
FW
(1) DOOR NO.1 HARNESS Ml)
DOOR NO.2 HARNESS
WW
EMISSION HARNESS AIR CONDITIONER HARNESS
INSTRUMENT PANEL HARNESS
FRONT HARNESS [a ,&<\I INJECTION HARNESS [INJ]
EMISSION’ HARNESS (EM)
I ENGINE HARNESS [E]
/
EMISSION HARNESS (EM)
INTERlOq IAMP HARNESS [IN]
- INTERlO? LAMP HARNESS [IN]
SUNRGOF GESS [SU]
REAR HklNESS [R]
323 HATCHBACK
IARNESS (R3)
FL00F4 HAdNEss(FR1 -,A HARNESS (Rl DOOR NO.3 HARNESS [DRS]
PROTE&

“.w- MIM . FRONT- ENGINE - REAR - - __._ -._.- -.~ -~ ~.. .-_.--_* . . . . . -...-- --
- WIRING DIAGRAM
IGNITION COIL
IA-VI/ FUSE BOX FUSE BOX
Bl-02
MAIN RELAY
(FUEL INJ)
JOINT BOX
I h
(_an&=y “t Ix-16j
I- 323 HATCHBACH
h-s* A,- (WW
JB-06 DI-U3 . dl, u=nE)
I
IGNITER (GRAY) 4b

s/JB-04 B&M
FUEL TANK “NIT
JOINT
CONNECTOR
A - Bl-01
\W\“ A Bl -03 /
JO& BOX
(F)-o /x-o! (BucI() (F)-(EM) w PROTEGii
Z-27

HARNESS COLOR : FRONT- ENGlNE - WIRING DIAGRAM
I
I
E l-1 b -I
INJECTOR NO.3
81-18
GRAY) WATER
THEFlMOSENSOR
(GREEN)
ENGINE CONTROL
“NIT
(BLACK)
z-29

HARNESS COLOR : FRONT- ENGINE m
5
P
/ !%%!,E SENSOR
Bl-20
// I WIRING DIAGRAM
81-21
CLUTCH SWITCH
@LACK)
ENGINE CONTROL
“NIT

HARNESS COLOR : FRONT- ENGINE - REAR - WIRING DIAGRAM ;
I
E

HARNESS COLOR : FRONT m ENGINE m WIRING DIAGRAM z
FUSE BOX
WATER
THERMOSWITCH
F-EM)
,:
z-43
__....._.. _ . . . . .._........ -. .._ _” .._. . . :..--..-.--, .__.
_.__.__.__.-

-
-
c
*
4
JOINT BOX
JB-06
“AllMESS COLOR : FRONT- ENGINE - REAR- WIRING DIAGRAM 1
I
JB-04
JOINT
CONNECTOR
E!
SWITCH
JOINT BOX
b/-V9
PARKlNG BRAKE SWITCH
z-47