1992 MAZDA 323 stop start

F3 TROUBLESHOOTING GUIDE
STEP INSPECTION ACTlON
6 Is dashpot correctly adjusted? Yes Go to next step
c
Dashpot set speed: Approx. 3,500 rpm
No Adjust dashpot
7
Try known good ECU; does condition
Improve?
w page F3-3
13EOF3-336
16 ENGINE STALLS SUDDENLY (INTERMITTENT)
DESCRIP.
l Engine intermittently stops running
TION l Before stalling, engine conditron is OK
TROUBLESHOOTING HINTS]
@ intermittently no spark or no fuel injection caused by ve-
hlcle vibratron, acceleratton, or deceleration
l Poor connectlon in wiring harness
iTEP INSPECTION ACTfON
1 Is “00” displayed on Self-Oiagnoss Checker Yes Go to next step
with lgnltlon swrtch ON?
NO Service Code No. displayed
Check for cause (Refer to speclfled
check sequence).
Note CT page F3-16
l When checking wiring harness and
connectors, tap, move, and wiggle
suspect sensor and/or harness to
recreate problem
“88” flashes ’
Check ECU terminal IF voltage
Voltage: Battery voltage
{ignition swttch ON) w page F3-45
4 If OK, replace ECU
4 If not OK, check wiring
(ECU - Self-Diagnosis Checker)
2 Check for poor connection of foliowrng parts
Yes Reparr or replace
l lgnltfon coil l Igniter l Distributor l t-flgh-tensron lead
No Go to next step l Injector l Injector reststor l Circutt-opening relay l ECU
3 Are ECU terminal voltages OK? Yes Go to Troubleshbotrng No. 2
(especially 16, 2A, 2B, and 2C) .“CRANKS NORMALLY BUT WILL NOT
w page F3-45 START (NO COMBUSTION)”
w page F3-20
Note
. No Check for cause
l When. checking voltages, tap, move, and
wiggle harness and connector to recreate
problem
* lrlrl m-7
F3-36
7.8-l

P CONVENTIONAL BRAKE SYSTEM
1 t3EOPX.314
@ 66.7 kPa
Iso0 mmHg.
19.7 inHg)
16EOPX-05t
1
13EOPX.315
P-8
POWER BRAKE UNIT
Quick Inspection (On-vehicle)
Power brake unit function check
(Method-using tester)
Connect the SST, vacuum gauge A, and pedal depression
force gauge B as shown in the figure. After bleeding the
air from the SST, conduct the test as described in the 3steps
below.
Note l
Use commercMty available vacuum gauge and ped.
al depression force gauge.
a) Checking for vacuum loss
Unloaded condition
1. Start the engine.
2. Stop the engine when the vacuum gauge reading reaches
66.7 kPa (500 mmHg, 19.7 inHg ) .
3. Observe the vacuum gauge for 15 seconds. If the gauge
shows 63.3-66.7 kPa [475--500 mmHg, 18.7-19.7
inHg 1, the unit is operating.
Loaded condition
1. Start the engine.
2. Depress the brake pedal with a fdrrce of 196 N I20 kgf,
44 Ibfj.
3. With the brake pedal depressed, stop the engine when the
vacuum gauge reading reaches 66.7 kPa {SO0 mmlig,
19.7 inHg].
4. Observe the vacuum gauge for 15 seconds. If the gauge
shows 63.3-66.7 kPa I475--500 mmHg; 18.7-l 9.7
inHg 1, the unit is operating.
b) Checking for hydraulic pressure
1, If with the engine stopped (vacuum 0 kPa (0 mmHg, 0
hltlg 1) the fluid pressure is within specification, the unit is
operating.
Pedal force N fkgf. Ibf]
Fluid pressure kPa (kgf/cm2, psi)
196 LZO. 441 1080 111. 1561 min.
2, Start the engine. Depress the brake pedal when.the vacu-
urn reaches 66.7 kPa 1500 mmHg, 19.7 intlg 1. If the flu-
id pressure is within specification, the unit is operating.
Pedal force N 1 kgf, fbf I Fluid pressure .kPa { kgflcm’. ps 1
196 I20,441 6670 {68, 967
1 min.
-- WlTHOU
&
d
I=-
-
1 MASTER CYUh
.
i_

SYSTEM INDEX
ENGINE-RELATED SYSTEMS STARTING SYSTEM...............2 4
CHARGING SYSTEM...............2 6
ENGINE CONTROL SYSTEM.........2 8
COOLING FAN SYSTEM............3 6
CHASSIS-RELATED SYSTEMS ANTI-LOCK BRAKE SYSTEM........82
INSTFUJMENT CLUSTER-RELATED SYSIEMS IrS$;MENT CLUSTER 6 WARNING
........................ 38
BODY-F&LATEX) SYSTEMS
WINDSHIELD WIPER 6 WASHER.....4 0
HEADLIGHT CLEANER.............4 0
REAR WIPER & WASHER...........4 2
HORNS...................,......6 0
REAR WINDOW DEFROSTER.........6 4
SOUND WARNING SYSTEM..........6 6
POWER WINDOWS.................7 4
POWER DOOR LOCK...............7 6
POWER OUTSIDE MIRRORS.........7 8
SLIDING SUNROOF...............8 0
SEAT WARMERS..................8 4
INTERIOR LIGHTING SYSTEMS IG KEY CYLINDER LAMP..........6 6
INTERIOR 6 SPOT LAMPS.........6 6
COURTESY LAMPS................6 8
TRUNK COMPARTMENT LAMP........6 8
ILLUMINATION LAMPS............7 0
EXTERIOR LIGHTING SYSTEMS
HEADLIGHTS
EXCEPT F.R.GERMANY...........44
F.R.GERMANY..................46
HEADLIGHT LEVELING SYSTEM.....46
TAILLIGHTS
EXCEPT F.R.GERMANY...........48
F.R.GERMANY..................5 0
LICENSE PLATE LIGHTS
EXCEPT F.R.GERMANY...........4 8
F.R.GERMANY..................5 0
POSITION LIGHTS
EXCEPT F.R.GERMANY...........4 4
F.R.GERMANY..................!i? 0
FRONT 6 REAR FOG LIGHTS.......52
TURN 6 HAZARD FLASHER
LIGHTS.......................54
STOPLIGHTS
F.R.GERMANY.a................5 6
EXCEPT F.R.GERMANY...........5 8
BACK-UP LIGHTS................6 0
AIR CONDITIONING-RELATED SYSTEMS HEATER........................6 2
ACCESSORIES CIGARETTE LIGHTER.........<....64
DIGITAL CLOCK.................64
AUDIO SYSTEM..................72
OTHER DIAGNOSIS CONNECTOR...........86

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

,c -
-
3
F.R.GERMANY F.R.GERMANY -CURRENT FROM BATTERY -CURRENT FROM BATTERY
-----CURRENT FROM IGl. 1G2 -----CURRENT FROM IGl. 1G2
l
ELECTRICAL WIRING SCHEMATIC =&$&jT FRoM ACC l ELECTRICAL WIRING SCHEMATIC =&$&jT FRoM ACC w-2 w-2
I I l ILLUMINATION LAMPS l ILLUMINATION LAMPS
MAIN BOA MAIN BOA , ,
485 VALVI
30A
HAZARO
30A ET’&” REAA FOG
i il E-5
t ‘=POSITION LIGHTS E-4
0
n LICENSE PLATE LIGHTS E-4
i ’ l TAILLIGHTS E-4
!rJJ:GHT LEVELING
.
i il E-2 REAR WIPER
15A a....*.
--- ~--
4
~FIEAR WIPER 6 WASHER i il o-2 I ----- - ---_ L/G _--...----A-___ 7
I WIPER 20A
,---.... - ----_ L ----
I
HEATER 30A
+-----w-.-L/W-+ -----; --__. l ,,,ZATER
G
I I
I
I METER 15A
I - l COURTESY LAMPS I-3
,--+ ---- (xro ---- FJ,y ----, I
I : I -mINTERIOR 6 SPOT LAMPS
I I SUNROOF 15A I I-2
b----------G/o ---- [ ---..- ~----,mSLIOING
I I SUNROOF
I
i i
I I SEAT WARMER
I
I I +g&)
ETN 30A t : ROOM 1OA
; ; i I ,
I : &---------,WBUCK-UP LIGHTS F-4
I
HORN iOA
STOP :
l- : !
.^. t , B/R l HORNS F-4
I , ABS iOA
- ~-
ABS 60A
9--t-“---
1 t
I :
t
I 1
FLASHER LIGHTS STOPLIGHTS
CHARGING SYSTEM
TRUNK COMPARTMENT
POWER DOOR LOCK K-2
INSTRUMENT CLUSTER
6 WARNING LAMPS C
?:m-“_“_“.B/W ---- +.+,v.-{~POWE~ ,.,INOOWS
K-l
l i .-m-e_ cx/v _____ G _-__ +.:m.
I , i il I-l
L_-----_-, l COOLING FAN SYSTEM B-2
B/L---------------------
R l STARTING SYSTEM A-l
21

SYSTEM CIRCUIT DIAGRAM/
CONNECTOR LOCATIONS
ENGINE-RELATED SYSTEMS EXTEFlIOFl LIGHTING SYSTEMS STARTING SYSTEM...............24 HEADLIGHTS
CHARGING SYSTEM...............26 EXCEPT F.R.GERMANY...........44
ENGINE CONTROL SYSTEM.........28 F.R.GERMANY..................46
COOLING FAN SYSTEM............36 HEADLIGHT LEVELING SYSTEM.....46
TAILLIGHTS
CHASSIS-RELATED SYSTEMS EXCEPT F.R.GERMANY...........48
ANTI-LOCK BRAKE SYSTEM........82 F.R.GERMANY.a................50
LICENSE PLATE LIGHTS
INSTFUMENT CLUSTEA-FiELATED SYSTEMS EXCEPT F.R.GERMANY...........48
INSTRUMENT CLUSTER 6 WARNING
I LAMPS........................38
BOOY-ELATED SYSTEMS WINDSHIELD WIPER 6 WASHER.....40
HEADLIGHT CLEANER.............40
REAR WIPER 6; WASHER...........42
HORNS.........................6 0
REAR WINDOW DEFROSTER.........6 4
SOUND WARNING SYSTEM..........6 6
POWER WINDOWS.................7 4
POWER DOOR LOCK...............7 6
POWER OUTSIDE MIRRORS.........7 8
SLIDING SUNROOF...............8 0
SEAT WARMERS..................8 4 F.R.GERMANY..............u.i5 ii
POSITION LIGHTS
EXCEPT F.R.GERMANY...........4 4
F.R.GERMANY..................5 0
FRONT 6 REAR FOG LIGHTS.......5 2
T;l%&HAZARD FLASHER
sTopLIGHi ..... ...............
.54
F.R.GERMANY..................5 6
EXCEPT F.R.GERMANY...........5 8
BACK-UP LIGHTS................6 0
INTERIDFI LIGHTING SYSTEMS IG KEY CYLINDER LAMP..........6 6
INTERIOR 6; SPOT LAMPS.........6 6
COURTESY LAMPS................6 8
TRUNK COMPARTMENT LAMP........6 8
ILLUMINATION LAMPS............7 0
A;~ATOEOS;DITIONING~LATED SYSTE
........................
ACCESSORIES
CIGARETTE LIGHTER.............64
DIGITAL CLOCK.................6 4
AUDIO SYSTEM..................7 2
OTHER
DIAGNOSIS CONNECTOR...........86

PARTS INDEX
PARTS NAME PAGE
PARTS NAME PAGE
I KNOCK CONTROL UNIT...................30
KNOCK SENSOR.........................30 .82
.82
.82
.82
.82
.32
.26
.72
a LICENSE PLATE LIGHT...............48.5 0
B MAIN RELAY(FUEL INJ)
............... ..2 8
1 NEUTRAL SWITCH.......................3 2
$3 OIL PRESSURE SWITCH..................3 8
OXYGEN SENSOR........................2 8
J PANEL LIGHT CONTROL..................7 0
PARKING BRAKE SWITCH.................3 8
POSITION LIGHT....................44,5 0
POWER DDOR LOCK SWITCH...............7 6
POWER DDOR LOCK TIMER UNIT...........7 6
POWER DOOR LOCK ACTUATOR.............7 6
POWER OUTSIDE MIRROR MOTOR...........7 0
POWER OUTSIDE MIRROR SWITCH..........7 8
POWER STEERING PRESSURE SWITCH.......3 2
POWER WINDOW MAIN SWITCH.............7 4
POWER WINDOW MOTOR...................7 4
e
1 BACK-UP LIGHT SWITCH.................60
BACK-UP LIGHT....
BLOWER MOTOR.....:::::::::::::::::::’
.E
BLOWER SWITCH........................62
BRAKE FLUID SWITCH...................38
POWER WINDOW SWITCH..................74
J D REAR FOG LIGHT RELAY.
REAR FOG LIGHT SWITCH
REAR FOG LIGHT.......
REAR SPEAKER......... ................
................ zz
................
52
................
................ E
................ 42
............... .
..: 2
.Riik+‘::::::::..6 4
SWITCH.........6 4
................
................ :z
................ 62
............. 44, 48
I CIGARETTE LIGHTER..
CIRCUIT OPENING REL
CLUTCH SWITCH...
COMBINATION SWITCH:
CONDENSER.......
COOLING FAN MOTOR::
COOLING FAN RELAY..
COURTESY LAMP.....,
CPU................ . .64
/ii’::::::::::::::..2 8
..................
... 44, 46, 48, 50, 52, %
..................
.................. 2:
..................
.................. 2:
............... 42, 66
B DIAGNOSIS CONNECTOR.....
DIGITAL CLOCK...........
n-rnnc ............
............ E
............
............ %
............
............ ZE
TURN LIGHT....
WASHER MOTOR.. REAR
REAR
REAR
REAR
REAR
REAR
REAR
REAR
-ih .ER
-ER
RESISTOR ASSEMBLY..
RUNNING LIGHT RELAY
il SEAT WARMER...........
SEAT WARMER REALY.....
SEAT WARMER SWITCH....
SHORT CONNECTOR.......
SLIDING SUNROOF MOTOR.
SLIDING SUNROOF RELAY.
SLIDING SUNROOF SWITCH
SLIDING SUNROOF.......
SOLENOID RESISTOR.....
SOLENOID VALVES
PRC HIGH TEMP........
PRC LOW TEMP.........
PURGE CONTROL........
WASTEGATE............
SPEED SENSOR..........
SPOT LAMP.............
STARTER...............
STOPLIGHT CHECKER..... ........
........
........
........
........
........
........
........
........ ....... 84
.......
....... ::
.......
.... 66.2
.......
.... 66, Ei
.......
....... ........
........
........
........
........
........
........
........
........
........
.
. . . . . . z:
. . .
. . . . zoo
. 1 .
. . . . E
. . . .
56, ::
. . 56, 58
. . 56, 58
“J.“LJL................. DISTRIBUTOR ............
DOOR SPEAKER ........... .
DOOR SWITCH........: .... 8
3 ENGINE CONTROL UNIT............ ,28, 30. 32
3 FLASHER UNIT...
FRONT FOG LIGHT
FRONT FOG LIGHT
FRONT FOG LIGHT
FRONT SIDE TURN
FRONT TURN LIGH
FUEL METER.....
FUEL PUMP REALY
FUEL PUMP UNIT.
FUEL PUMP......
-. -- ............
............ 22 .
. . RiiA‘i 1
SWITCH
i&ii 1 ............ 52
............ .
............ 22
.....................
..................... %
.....................
..................... %
..................... 28 -
tust ....................
B
G SENSOR ................
13 HAZARD SWITCH............
HEADLIGHT CLEANER MOTOR..
HEADLIGHT CLEANER SWITCH.
HEADLIGHT LEVELING ACTUAT
HEADLIGHT LEVELING SWITCH
HEADLIGHT RELAY..........
ENI- IGHT. . . . . .
HORN RELAY...............
HORN SWITCH.............. ...
40, 46, 52, 64
: ........... 82
............ 54
........... .
..: ii
&::::::::..4 6
HORN..................I 1
HYDRAULIC UNIT ..........
01 IC REGURATOR ............
IG KEY CYLINDER LAMP ....
IGNITER .................
IGNITION COIL ...........
ILLUMINATION LAMP .......
AUDIO SYSTEM ...........
BLOWER SWITCH .......... ............
46
............ 44
......... 44, 46
............
............ E
............
............ E
...........
........... 2:
...........
........... 2
...........
........... 5:
...........
........... 5:
...........
........... 5::
...........
........... 5:
..........
.%
;ci:::::::.;;
........... CIGARETTE LIGHTER: ;.I:;::
FRONT FOG LIGHT SWITCH...
HAZARD SWITCH...........
HEADLIGHT CLEANER SWITCH:
HEADLIGHT LEVELING SWITCH
INSTRUMENT CLUSTER.......
REAR FOG LIGHT SWITCH....
REAR WINDOW DEFROSTER SW1
SEAT WARMER SWITCH.......
INDICATOR LAMP...........
...........
........... 33:: ...........
30 STOPLIGHT SWITCH ......
STOPLIGHT .............
0 TAChOMETER...........................3 8
TAILLIGHT.........................48,5 0
TEMP METER...........................3 8
THROTTLE SENSOR......................3 2
TRANSFER PUMP........................2 8
TRUNK COMPARTMENT LAMP SWITCH........6 8
TRUNK COMPARTMENT LAMP...............6 8
TURN SWITCH..........................5 4
q WARNING LAMP.........................3 8
WASHER LEVEL SENSOR..................3 8
WATER THERMOSENSOR................30,3 8
WATER THERMOSWITCH................... 6
WINDSHIELD WASHER MOTOR..............4 0
WINDSHIELD WASHER SWITCH.............4 0
WINDSHIELD WIPER MOTOR...............4 0
WINDSHIELD WIPER SWITCH..............4 0 INJECTOR..........:;.:::::
INJECTOR RESISTOR .........
INSTRUMENT CLUSTER .....
INTERIOR LAMP..........:::
ISC VALVE .................
. . . . . , . . . . .
. . . . . . . . . . . iz:
,..........
30