battery MAZDA 323 1992 Suplement Owner's Manual

F3 CONTROL SYSTEM
Ve: Battery voltage
Termina
1N ’
10
1P
IQ
IR
IS
1T
tlJ
IV Jnput Outpul
0
0
0
0
0
0
0
0
0 Connected to
Throttle sensor
(idle switch) Test condition
Correct voltage Remark
Accelerator pedal released
Below 1.0V
lgnltlon switch
Accelerator pedal depressed
VI3 ON
Foglrght relay
P/S pressure
switch Fogtight switch ON
Fogfight switch OFF
Ignition switch ON
P/S pressure switch ON at Idle
PIS pressure switch OFF at idle Va
ov
V3
Below 1 .OV
VB -
-
A/C switch A/C switch ON
A/C switch OFF Below 23 Ignition switch
Va ’ ON and blower
motor ON
1 f Ekctrtc cooltng fan Fan operating (coolant temperature over
Below 1 .OV
switch
97OC 1207OF 1 or diagnosis connector
terminal TFA grounded) -
Fan not operating (Idle)
VI3
Blower control Blower control switch OFF or 1st position
.Va
swbtch Ignitton switch
Blower control switch 2nd or hjgher po-
Below 1 .OV ON
sition
Rear window
defroster switch Rear window defroster OFF
Rear window defroster ON Below 1 .OV Ignition switch
V0 ON
Headlight switch
Headfights ON Va
Headlights OFF -
Below 1.OV
Neutral/Clutch
Neutral position or clutch pedal
9eJow I .OV
switches
depressed
Others
Va
7
r u-.
I-I-I
f
2y 2w 2u 2s 20 20 2M 2K 21 2G 2E 2C 2A 1U 1s 10 10 1M 1K 11 rG IE tC ;A
22 2% 2V 2T 2R 2P ZN 2L 25 2H 2F 2D 28 tV 1T ‘IR IF 1N It ;J. IH IF ID 18
i
A
F3-48
-- Alwa@
Always
Always
Always
--
Always
--
Always
--
Always
--
Always
--
Always
(electric
--
Alway<;
--
Always
-e
Afway?;
I .ov
Always
--
Always
--
Alway:;
--

-. _.. . . . . . _ - ._.
-w
CONTROL SYSTEM F3
I .
-.
Ve: Battery voltaae I
Incorrect voltage
Atwafi below 1 .OV
Always VB
Always VS (foglight switch OK)
Always below 1 .OV
Always below 1 .OV
Always Vs
Always
below 23 (blower fan OK)
Always VB (blower fan OK)
Always below 1 .OV
(electric cooling fan OK) -
1-
Possible cause
l Throttle sensor mrsadjustment l Short circuit in wtrrng from throttle sensor to ECU terminal 1 N l ECU malfunction
l Throttle sensor mrsadjustment l Open circuit in wiring from throttle sensor to ECU terminal fN l Open circuit in mnng from throttle sensor to ECU terminal 20
l Foglight relay malfunctron
l Foglrght relay malfunction
l P/S pressure switch maltunctron l Short crrcurt In wrrlng from P/S pressure switch to ECU terminal 1 P l ECU malfunction
l P/S pressure switch malfunction l Open circuit in wlnng from P/S pressure switch to ECU terminal 7 P l Open circuit in wiring from P/S pressure switch to ground
l A/C switch malfunctron l Short circuit tn wiring from A/C switch to ECU terminal 1Q l Poor connection at ECU connector l ECU malfunction
l #C swatch malfunction l Open circuit in wiring from A/C switch to ECU terminal 1Q l Open circuit in wiring from A/C switch to blower control switch
l Open or short circuit in wiring from fan relay to ECU terminal 1R l ECU matfunction
Always below 1 .OV (blower fan OK}
Always Vs (btower fan OK)
Always betow illumination lamp
1 .ov ON when rear
window defroster
switch ON
Illumination lamp
never ON
Atways below 1 .OV (headttghts OK)
l Short circuit in wrrtng from blower control switch to ECU terminal IS l Poor connection at ECU connector l ECU m&function
l Open crrcuit in wrrrng from blower control switch to ECU terminal 1s
l Open or short crrcuit In wiring from rear window defroster switch to ECU
terminal t T
l Open circuit in wiring from ignitron switch to rear window defroster switch l Rear window defroster switch malfunction
l Open or short circuit in wiring from headlight relay to ECU terminal 1 U
Always below 1 .OV
l Neutral switch malfunction l Clutch switch malfunction l Short circuit in wiring from ECU terminal IV to neutral or clutch switch
Always VB
l Neutral switch malfunction l Clutch switch malfunction l Open circuit in wiring from ECU terminal 1V to neutral or clutch swdch l Poor connection at ECU connector
13FOl=3-36 .
F3-49
.:i

F3 CONTROL SYSTEM
Vs: Battery voltage
‘erminat Input Output Connected to Test condition
Correct voltage Remark
2A’ - - Ground (i nlector) Constant CIV -
26 - - Ground (output) Constant ov -
2C - - Ground (CPU) Constant ov -
2D - - Ground (input) Constant ov -
2E 0 Distributor Ignition switch ON QV or 5v
{NE-slgnal) -
f
r ldte
Approx. 2V
2F - - - -
- -
2G 0 Dstributor Ignition switch ON
ov or 5v
(G signal)
ldte Approx. 1.5V
a-l -I- - -
- -
21 - - - - - -
23 0 Knock control unit Idle Approx. 4.W -
I
2K 0 Throttle sensor/ Constant 4.5--5SV
Airflow meter
-
2L cl
2M 0 Speedometor
sensor
Throttle sensor Ignition switch UN
Accelerator pedal released
Accelerator pedal fully depressed 0 or 5V
Approx. 0.W
Approx. 4.W
-
2N 0
20 0
2P 0
2Q 0
2R Oxygen sensor Ignition switch ON ov
Idle (cold engine) ov
Idle (after warm-up) o- 1 .ov -
Increasing engine speed (after warm-up) 0.5-l .ov
Deceleration o--0.w
Airflow meter ignition switch ON Approx. 3.W
-
Idle Approx. 3.OV
Intake air Ambient air temperature 2O*C (68*F) Approx. 2.5V In arrflow meter
thermosensor
Water Engine’cooiant temperature 20°C (68OF) Approx. 2.W
thermosensor -
After warm-up Below 0.5V
0 Turbocharge Ignition switch ON VS
indicator -
7
r u-l 7 c Ul I-'
2y ?A’ 2u 25 20 20 2M 2K 21 ?G 2E 2C 2A 1u 1s 10 10 1M ?K 11 1G 1E 1C 1A
22 2x zv 2T 2R 2P 2N 2L 2J 2H 2F 20 28 1V 1T tR tP 1N IL 1.1 1~ qF 10 1~
F3-50
L --
4b&e (
--
Alway:
-a
--
Always
--
--
--
Always
--
Always
--
Below L
-I
--
Always
--
Alway:,
Alway:;
Alway:;
--
Alway:;
--
Always
--
Always
--
Always
Always

CONTROL SYSTEM F3
VS: Battery voltage
Incorrect voltage Possible cause
Ab&e OV
l Poor contact at ground terminal l Open circuit in wiring from ECU to ground
Always approx. OV or approx. 2V
l Refer to Code No. 02 Troubleshooting
(Refer to 323 Workshop Manual (l203-lo-89F))
Always approx. OV or approx. 1.5V
l Refer to Code No, 03 Troubleshooting
(Refer to 323 Workshop Manual (1203-lo-89F))
Always OV
Always OV
- -
l Refer to Code No. 05 Troubleshooting
(Refer to 323 4-Wheel drive Workshop Manual (1229-10-891))
l Short circuit in wiring from ECU terminal 2K to throttle sensor, or airflow
meter
l Poor connection at ECU connector l ECU matfunctlon
Below 4.5V or above 5.5V
-
l ECU matfunction
l Refer to section 1
Always OV
l Throttle sensor malfunction l Short circuit in wlnng from ECU termrnal 2M to throttle sensot l Poor connection at ECU connector
. ECU malfunction
Always approx. 5V . Throttle sensor misadjustment
l Open circuit in wiring from ECU terminal 2D to throttle sensor
Always constant
l Open circuit in wiring from ECU terminal 2M to throttle sensor
. Open circurt in wiring from ECU terminal 2K to throttle sensor
l Open circuit in wiring from ECU terminal 2D to throttle sensor
Always above 1V 1 . Throttle sensor mtsadjustment
Always OV (after warm-up)
Always approx. IV (after warm-up)
l Refer to Code No. 15 Troubleshooting
(Refer to 323 Workshop Manual (1203-I O-89F))
l Refer to Code No.17 Troubleshooting
(Refer to 323 Workshop Manual (1203-lo-89F))
Always OV or approx. 5V
l Refer to Code No. 08 Troubleshooting
(Refer to 323 Workshop Manual (t203-lo-89F))
Always OV or approx. 5V
Always OV or approx. 5V
l Refer to Code No. 10 Troubleshooting
(Refer to 323 Workshop Manual (l203-lo-89F))
l Refer to Code No. 09 Troubleshooting
(Refer to 323 Workshop Manual (1203-10.89F))
Always OV
I
l Indicator broken l Open or short circuit In wiring from ECU 2R to ignition switch
13EOF3-36;
F3

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