1992 MAZDA 323 battery

F3 CONTROL SYSTEM
Terminal Input Dutpui
2s - 0
2T 0
2U 0
2v 0
2w 0
2x 0
2Y 0
22 0 t
I, Ve: Battery voltage I I I Connected to Test condition
Correct voltage Remark
Overboost warning lgnitron switch ON
VB
-
buzzer
Solenoid valve
(PRC low temp.) 180 sec. after engrne started with coolant Below 1.W No-load engine
temperature is above 9O*C { 194*F ] and condition
intake air temperature IS between 40°C
1104*FJ and 50°C {122OF
f Other condition at idle
I VS
tnjector {Nos. 1, 3) Ignition switch ON VS
Idle V0’
I Engine speed above 2,000 rpm during
I Ve
deceleration (after warm-up)
Injector (Nos 2, 4) Ignition switch
ON VS
Idle VS’ * Engine Signal
Monrtor: Green
and red lamps
flash
ISC valve Engine speed above 2,000 rpm during VS
deceleration (after warm-up)
Ignition switch ON Approx. 7V
-
Idle 1 Approx. 9V
Solenoid valve
(purge control) Ignition switch ON
Idle V0
-
VB
Ci rcuit-opening
relay ignition switch ON
tdle 1 VB
I 8elow l.OV -
Solenotd valve
(PRC high temp.) 210 sec. after engine started wrth coolant Below 1.5V
temperature above 90°C ]194*F] and
Intake atr temperature above 50°C
f t22*F1 No-load engine
cond$on
1 Other condition at idle
I VB
I -
7 I PI
I l-1 t
r
2'f 2W 2U 25 iQ 20 &A 2K 21 2G 2E 2C 2A 1U 1s 10 10 1M 1K 11 tG If 1C 1A
F3-52 --
A/w&
--
Alway
--
Alway
--
Alway
--
Alwaj
--
Alwa f
--
Alwas]
--
Alwa I’

VB: Battery voltage
Incorrect voltage Possible cause
Always OV
l Open or short &curt in wirtng from ECU terminal 25 to buzzer
Always OV or VB
l Refer to Code No.25 Troubleshooting (Refer to page F3-18)
-
Always OV l Main relay (FUEL INJ relay) malfunction l Open or short crrcult rn wlnng from Injector to ECU termtnal 2U or 2V
Always Va
l ECU matfunctlon
Always OV or VB
Always OV or VB
Always OV
Atways OV or VB
l Refer to Code No.34 Troubleshooting
(Refer to 323 Workshop Manual (1203-t O-89F))
l Refer to Code No.26 Troubleshooting
(Refer to 323 Workshop Manual (1203-lO-89F))
l Open or short circuit in wiring from ECU terminal 2Y to relay
l Refer to Code No. 35 Troubleshooting (Refer to page F3-18)
F3-53

TECHNICAL DATA TD
ENGINE ELECTRICAL SYSTEM
l ’ Dark current is the constant flow of current while the ignition switch is OFF. (i.e., engrne control unit, EC-AT control unit, audio, etc.)
l z Standard plug tteq Engine
BP OOHC turbo
Battery Voltage v 12
Type and capacity (2U-hour rate) 55D23t (60Ah)
Dark current
l r mA Max. 20.0
_ Type AC.
Output V-A 12-70
Regulator type Transistorized (bitt-in IC regulator)
Regutated voltage v 14.1--t4.7
Alternator
’ Standard
Brush length mm 1 in] r 21.5 { 0.846 ]
Minimum 8.0 (0.32 )
Drive belt deflection New 5.5-7.0 10.22-0.27 ]
98 N (10 kgf, 22 IM] Used 6-O-7.5 (0.24-0.29 1
mm Iin)
Limit 8.0 IO.31 1
, Type Direct
Starter Output v-kW
Standard
Brush length mm {in] Minimum
Distributor spark advance
Ignition timing BTDC
(TEN terminal of diagnosis connector grounded)
Primary coit
Ignition coil Resistance winding
(at 20°C 168OF)) Secondary coil
winding
NGK
TYW
Spark plug NIPPONDENSO
, ml WP mm (in)
Firing order 12-0.85
17 (0.671
11.5 IO.481
Etectronic spark advance (ESA)
10 f 10
0.81~-0.99Q
IO-16 kfI
BKRGEVXI I**/ BKRSEVXI 1
BKR7EVX-f f
K20PR-TPl l”‘/ KlGPR-TPI 1
K22PR-TP 11
1.0-l .f { 0.039-0.043)
l-3-4-2

GI Wiring Diagrams
Contents of wiring diagrams
l This document comprises the 8 groups shown below. The main components are summarized in the
components location diagram at the
end of the document.
I I Gi General information A how-to on using and reading wiring diagrams, 1
using test equipment, checking harnesses and
connectors, and findrng trouble spots
Y , Ground points
- Ground routes from and to the battery
W Electrical wiring Shows main fuses and other fuses for each
schematics system
A-U Circuit diagrams for
~ individual systems Shows circuit and connector diagrams and
component and connector location diagrams
X Common connectors Shows connectors common throughout system
~ JB i Joint box complete
wiring system
I Shows internal circuits and connectors
PL Parts location
Pi index Shows location of major electrical parts
Gives page number of circuit diagram for each
component
Using wiring diagrams
l The use of the wiring diagram depends on its application. Application
-or checking
:ircuits of
ndividual
systems
For checking
ground circuit
of individual
systems Use
II Application For checking
fuse
connections
Open to page with circuit diagram and
harness routing to be used and fold out
common connector diagram or joint box
diagram.
II
For finding
page numbers
of systems and
components
Open to page with ground point diagram
and fold out common connector diagram
or joint box diagram. Use
3pen to electrical wiring schematic.
Parts Index System Index
or
Open to parts index or system index.

GI Reading Wiring Diagrams
Symbols
Symbol Meaning Symbol Meaning
Battery
l Generates electricity through
Resistance 0 A resistor with a constant value.
chemical reaction. l Mainly used to protect electrical
l Supplies direct current to circuits. components in circuits by maintaining
rated voltage.
l Reading resistance values.

Ground (1)
l Connecting point to vehicle body or No.1 color band other ground wire where current flows No.2 color band
-A-
from positive to negative terminal of No.3 mbr band
battery. No.4 color band
1 l Ground (1) indicates a ground point to
body through wire harness.
Ground (2)
l Gound (2) indicates point where
component is grounded directly to
body.
Remarks
l Current will not flow through a circuit if
ground is faulty.
Fuse (1)
0 Melts when current flow exceeds that
specified for circuit, interrupts current
I__q/y)__ now.
Precautions
(box)
l Do not replace with fuses exceeding
Fuse (2) specified capacity.
(Cartridge)
Main fuse/Fusible
Transistor (1)
l Electrical switching component. l Turns on when voltage is applied to Motor
0 Converts electrical energy into
mechanical energy.
Transistor (2)
0 Reading code. a Pulls in and discharges gases and
liquids.
Number of temtinak
Lamp l Emits light and generates heat when Current flows through filament. Cigarette lighter l Electrical coil that generates heat.

Reading Wiring Diagrams
Loaic symbols I
ypes of logic symbols Operation Expressing output Simple relay circuits
OR
Input to A or 8 will Low electricai potential (L) at A and B +
produce output at C. no output (L) at C
A
6
D- High electrical potential (H) at A or B +
C output (H) at C
AND Input to A and B will High electrical potential (H) at A and B +
produce output at C. output(H) at C
q---J-c
Low electrical potential (L) at A or B + A
no output (L) at C
B a-00-a C
6
INV No input to A will produce Low electrical potential (L) at A -+
an output at B. no ground (H) B
An input to A will not High electrical potential (H) at A +
A- 6 produce an output at B. grounds (L) B A- 6
PROCESS Simplified representation of complex functions within circuit describes
main function. (Examples)
---
--I- 1 1. Igniters
I
-L-l Signal detector for engine control unit, cooling unit, and tachometer.
Ii- 2. r”~“-‘-‘-““‘~~‘.“’
Sbnsl conwflw :
i...-..--.---......-.~~
Signal converter for turn and hazard flasher unit and igniter unit.
Abbreviations used in this booklet
A
AAS
ABS
ACC
ACCEL
ACV
ADD
AE
AIS
ALL
ALT
EP
ANT
EV
EP
ATX
A/C
AIF
AIR
:AC
B/L
CARB
CCT
CIGAR
COMBI
CON
CONT
CPU
CSD
DEF
DOHC
ECPS Ampere
Autoadjusting Suspension
Antilock Brake System
Accessory
Accelerator
Air Control Valve
Additional
Acoustic Equilibration
Air Injection System
Automatic Load Leveling
Alternator
Amplitude Modulation
Amplifier
Antenna
Autostop
Alr Supply Valve
Automatic transmission
Atmospheric Pressure
Automatic Transaxle
Air Conditioner
Air Fuel
Auto Reverse
Battery
Bypass Air Control Valve
Bilevel
$rr$:,tor
Cigarette
Combination
Conditioner
Control
Central Procassino Unit
&Id-Start Device -
Defroster
Double-Overhead Camshaft
Electronically Controlled Power
Steering ECU
EGI
EGR
ELEC
ELR
ETR
EXH
E
FICB
FM
F/S
F/I
GEN
ET
HI
H/D
I;LUMl
INT
ISC
JB
LCD
LF
k!
z Engine Control Unit
Electronic Gasoline Injection
Exhaust Gas Recirculation
Electrio
Emergency Locking Retractor
Electronic Tuner
Exhaust
Front
Fast-Idle Cam Breaker
Frequency Modulation
Feedback
Fuel lniector
Generator
Heater
High-Energy Ignition
High
Heater/Defroster
Ignition
lllumlnation
Idle-Speed Control
Joint Box
Liquid Crystal Display
Left Front
Left Hand
Low
Left Rear
Low Wave
:I, Motor
Middle
MIL
MIN Malfunction Indicator Lamp
Minute
MIX
Mixture
MPX Multiplex
ZR Manual Transmission
MTX Mechanical Tuning Radio
Manual .Transaxie PRG
PTC
P/S ass
kc
FIF
. . .
RH
RPM
!2EL
SQ
ST
SW
TCV
TEMP
TICS
TR
TWS
V
VENT
VOL
VRIS
W Middle Wave
Normally Closed
Normally Open
Overdrive
Switch Off
Switch On
Power
Pressure Regulator Control
Solenoid Valve
Purge Solenoid Valve
Positive Temperature Coefficient
Heater
Power Steering
;im&k-Start System
Recirculation
Right Front
Right Hand
Revolutions Per Minute
Right Rear
Solenoid
Squares Per Milimeter
Start
Switch
Twin Scroll Turbocharger
Solenoid Valve
Temperature
Triple Induction Control System
Transistor
Total Wiring System
Volt
Ventilation
Volume
Variable Resonance Induction
System
Watt(s)
IO

Troubleshooting GI
Precautions to take when servicing an electrical system
l Note the following items when servicing the electrical system.
l Do not alter the wiring or electrical equipment in any way; this may damage the vehicle or cause a fire from
short-circuiting a circuit or overloading it. l
The negative (-) battery cable must be removed first and
installed last. l Do not replace with fuses exceeding specified capacity.
1OA
f5A
Zaution
o Be sure that the ignition and other switches are off
Caution
before disconnecting or connecting the battery
l Replacing a fuse with one of a larger capacity than
cables.
designated may damage components or cause a fire.
Failure to do so may damage the semiconductor
components.
0 Tape areas of the
l When mounting l Secure harnesses with provided clamps to take up slack.
harness that may rub or
components, be sure the
bump against sharp
harness is not caught or
edges to protect it from
damaged.
damage.
Zaution
B Clamp all harnesses near vibrating components
(for example, the engine) to remove slack and to
prevent contact resulting from vibration.
D Do not handle electrical components roughly or drop
them.
l Disconnect heat-
sensitive parts (for
example, relays and
ECU) when performing
maintenance (such as
welding) where
temperatures may exceed
80°C (176°F). l Make sure that the
connectors are securely
connected when
installed.
11

Troubleshooting
Using electrical measuring equipment
Equipment USe
Test lamp Test to find open or shorted
H circ”its. operation Handling precautions 0 Connect the test lamp l Test lamps use 12V 1.4W
between the circuit being
or 3.4W bulbs or light-emitting
measured and a ground.
diodes (LEDs). Using .a large-
l The lamp will light if the circuit
capacity bulb may damage the
is energized to the point
CPU.
tested.
I? ‘s
n
Jumper wire
Used to create a temporary 0 Connect the jumper wire
l Do not connect the jumper
circuit. between the terminals of a wire from the power source
circuit to bypass a switch. line to a ground; this may
4 cause burning or other
b damage to harnesses or
electronic components.
M
Voltmeter
Used for measuring the voltage
l Connect the voltmeter in
of a circuit to find possible opens *Connect the positive (+) probe
parallel with the circuit.
or shorts.
to the Point where Voltage is to 0 Set the range to the desired
be measured and the negative
voltage.
(-) probe to a ground.
*Use the service hole when
measuring the voltage at the
diagnosis connector.
‘$$
‘, i_ I/
*Tie a thin wire to the positive
(+) probe to access narrow
terminals.
Ohmmeter
l Zero the ohmmeter.
Used to find opens and shorts in *Zero the meter after switching
the circuit, to confirm continuity l-.&j
to the measuring range.
and to measure resistance. -*-.
0 Before using the ohmmeter,
l Verify that voltage is not make sure the ignition switch
applied to the circuit. is off or the negative (-)
l Connect the probes between battery cable is disconnected
two points in a circuit. _ to prevent burning or
otherwise damaging the
ohmmeter.
Ammeter
l Connect the ammeter in series l Set the range to the desired
Used to check alternator output,
with the circuit by touching the amperage.
current supplied to the starter,
and dark current within a circuit. positive (+) probe to the l Connect the ammeter in series
power-side terminal and the with the circuit. The ammeter
Note
Dark current is the constant flow negative (-) probe to the
ground-side terminal. may be burned or otherwise
damaged if it is connected in
parallel.
of current while the ignition
switch is OFF.
13