1992 MAZDA 323 diagram

Mazda 323
o Workshop
b Manual CONTENTS
r Title Section
IG eneral Information
Pre-Delivery inspection and
Scheduled Maintenance
Supplement
I Lubrication System
j Cooling System
FOREWORD
This is a supplement to the workshop manu-
a!(s) shown below. This supplement describes
service procedures of. new or modified me-
chanicat and/or ekctrical systems. For service
procedures and important safety notices not
contained in this supplement, please refer to
the previous workshop manual.
Workshop Manual:
Form No.1 203-l O-89F (vol. 1)
1206-1 O-89F (Vol.2)
1229-l O-89L
1275-l O-91 c
b
All information in this supplement was the
latest available at the time of printing, ail alter-
nations related to modifications will be notified
by Service Sulletin. Carburetor
m !I
Fuel and
Emission
Controt
System EGi unieaded Fuel BP (DOHC
and S
Diesel
-Electrica I System
I-- Clutch
Manual
Transaxie
1 Electronically Co Introlled
I
Automatic
Transaxle Hydraulicaf~y’Co~~~rull=;u
1 Transfer
Mazda Motor Corporation
HIROSHIMA, JAPAN [ Propefier Shaft
1 Front and Rear Axles
P ISteerIng System
APPLICATION:
This manual is applicable to vehicles beginning
with the Vehicle Identification Numbers (VIN)
shown on the following page. Braking System
IWheels and Tires
ISusiension
1 Bodv Electricat System
1 Heater and Air Conditioner System
1 Technical Data
Special Toots
Parts Index
/ Wiring Refer to the form No.
, Diagram 5232-l 0-92A
--
This manual explains onty the secticlns marked with shadows (-1
0 1992 Mazda Motor Corporation
PR1NTED tN JAPAN, JAN., ‘92 @I
1318010192A

F3
c
FUEL AND EMISSION
CONTROL
SYSTEMS
i
INDEX . . . . . . . . l ..,.... *..,. . . . . . . m...*.*...*..... F3- 2
UUTLtNE
...................................... F3- 4
OUTLINE OF CONSTRUCTION.. ....
F3- 4
SYSTEM DIAGRAM ...................... F3- 5
VACUUM HOSE ROUTING
DIAGRAM
................................. F3- 6
WIRING DIAGRAM.. .....................
F3- 7
ECU RELATIONSHIP DIAGRAM ...... F3- 8
SPECIFICATIONS.. ....................... F3- 9
TURBOCHARGER CONTROL .......... F3-IO
OUTLINE
.................................... F3-10
SYSTEM DIAGRAM ...................... F3-10
WASTEGATE CONTROL ............... F3-11
FUEL SYSTEM
.............................. F3-12
OUTLINE ....................................
F3-12
CONTROL SYSTEM .......................
F3-13
STRUCTURAL VIEW .....................
F3-13
PRESSURE REGULATOR
CONTROL SYSTEM ....................
F3-14 SUPPLEMENTAL SERVICE
tNFOF?MATtON
............................. F3-I 5
SELF-DtAGNOStS FUNCTtON.. ........
F3-16
OUTLINE ....................................
F3-16
SERVICE CODE NUMBERS..
......... F3-16
TROU8LESHOOTtNG GUtDE
........... F3-19
RELATIONSHtP
CHART.. F3-19 ..............
DIAGNOSTIC JNDEX
.................... F3-20
PRECAUTIONS
............................
F3-21
SYMPTOM TROUBLESHOOTING .... F3-22
TURBOCHARGERCONTROL
SYSTEM ......................................
F3-37
TURBOCHARGER F3-37 ........................
WASTEGATE SOLENOID VALVE.. .. F3-38
INTERCOOLER ............................
F3-39
FUELSYSTEM ..............................
F3-40
FUEL PUMP ................................
F3-40
FUEL PUMP RESISTOR/RELAY ......
F3-40
PRESSURE
REGULATOR .............. F3-41
INJECTOR ..................................
F3-42
INJECTOR RESISTOR
................... F3-42
PRESSUR REGULATOR CONTROL
SYSTEM ......................................
F3-43
SOLENOID VALVE (PRESSURE
REGULATOR CONTROL)
............. F3-43
CONTROL SYSTEM
....................... F3-44
PREPARATION ............................ F3-44
ENGINE CONTROL UNIT (ECU) ..... F3-45
7 3EOF3-301

F3 OUTLINE
VACUUM HOSE ROUTING DIAGRAM
PRESSURE REGULATOR
IF1 BYPASS VALVE

F3 TURBOCHARGERCONTROL
TURBOCHARGERCONTROL
OUTLINE
l The-capacity of the air-to-air intercooler is increased to reduce the intake air temperature and to the tm-
prove engine performance.
l With addition of the improved wastegate control system, the engine’s high rpm torque is increased.
TURBOCHARG
INTERCOOLER
SYSTEM DIAGRAM
WASTEGATE SOLENOrD VALVE
F3-10

TURBOCHARGERCONTROL F3
WASTEGATE CONTROL
The engine control unit controls the wastegate solenoid valve by duty signals to better control the boost
pressure, increasing the engine’s power and response.
*
13EOF3.313
System Diagram r
DUTY VALVE
INTAKE AIR THERMOSENSOR (AIRFLOW METER)

F3 SELF-DIAGNOSIS FUNCTION
:ODE NO. 25 {SOLENOlD VALVE - PRESSURE REGULATOR CONTROL) (Low temperature opoeration)
INSPECTION ACTION
Disconnect connector from ECU; IS there battery Yes Check ECU termrnal connector for poor
voltage at ECU terminal 2T (G/C) wrth Ignition connection
switch ON?
4 If OK, replace ECU
CT page F3-2
c3 If not OK, repatr or replace connector
NO Go to next step
2 In same condition as rn Step 1. is there battery Yes Repair or replace wlrrng harness (G/O)
voltage at sofenord vatve (PRC low temp.) con-
nector termrnal wrre (G/O)?
NO Go to next step
3 Is solenord valve (PRC low temp ) UK7 Yes Check for a short or open crrcuit in WII-
CT page F343 ing harness (main relay [FUEL INJ re-
lay] - solenoid valve [PRC low temp.])
NO Replace solenord valve (PRC tow temp.)
1
t3EOF3-323
CODE NO. 35 (SOLENOID VALVE - PRESSURE REGULATOR CONTROL) (High temperature opoeration)
STEP lNSPECTlON ACTlON
1 Disconnect connector from ECU: is there battery Yes Check ECU terminal connector for poor
voltage a? ECU terminal 22 (G) with rgnttlon connection
swttch ON7
4 If OK, replace ECU
J page F3-2
e If not OK, repair or replace connector
No Go to next step
2 In same condrtron as In Step 1, is there battery Yes
voltage at solenoid valve (PRC high temp.) con- Repair or replace wiring harness (G)
nector terminal wire (G)?
No Go to next step
3 Is solenoid valve (PRC high temp ) OK7 Yes Check for a short or open circuit In wir-
r;r page F343 ing harness (marn relay [FUEL INJ re-
WI - sofenord valve [PRC high temp.])
No Replace solenoid valve
(PRC high temp.)
f3EOF3-324
Circuit Diagram
ECU
I
2T 22 I
G
TO MAIN RELAY
I SOLENOID
VALVE
(PRC HIGH TEMP.)
F3-18 :3EOf3 32 5
--
TRW
RELAT
c
-..


INPUT
--
KNOCH
--
DIAGM
(TEN T
--
IGNITIi
(STAR1
--
E/L SIC
-a
P/S PR
--
A/c SYI
--
NEUTR
SWITCI
--
STUPb
--
ATMDI
SENSQ
-a
THRUI
-..
INfAk.1
--
AlFlFLC
--
UXYGE
--
WATEF
--
DlSfRl

Mazda
323
4WD
Wiring Diagram
Europe (LHD)
FOREWORD
This wiring diagram incorporates the wiring schematics
of the basic vehicle and available optional equipment.
Actual vehicle wiring may vary slightly depending on
optional equipment or local specifications, or both.
All information in this booklet is based on information
available at the time of printing. Mazda Motor Corpora-
tion reserves the right to make changes without pre-
vious notice.
CONTENTS
Mazda Motor Corporation
HIROSHIMA, JAPAN APPLICATION:
This manual is applicable to vehicles beginning with
the Vehicle Identification Numbers(VlN) shown on
the following page.
8 1992 Mazda Motor Corporation
PRINTED IN JAPAN, JAN. ‘92 R
5232-lo-92A

GENERAL INFORMATION
Wiring Diagrams
Contents of wiring diagrams . . . . . . . . . . . . . . ..*................
Using wiring diagrams . . . . . . . . . . . . . . . . . . . . . . ..*............. ............
2
............
2
Reading Wiring Diagrams
Ground points ...........................................................
3
System circuit diagram/connector diagram ..................................
4
Routing diagram ......................................................... fj
“arnesssym~,s.. ...................................................... 7
Symbols .............................................................. ..~
Logic symbols ...........................................................
10
Abbreviations used in this booklet ..........................................
10
Troubleshooting
Precautions to take when servicing an electrical system * - * * * * - * * * * * * - - * * * * * * - * 11
Handling connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12
Using electrical measuring equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13
Measuring voltage . ..~...................................................
14
Measuring continuity/resistance. a e e a a v e s s * e e . e e e a 1 e e . s * e e o s w e e a e e . e * w s a e e a * 1 fj
Findingshortcircuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..I......... 16