fuse MAZDA 323 1992 Workshop Manual Suplement

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a
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GI CAUTKN
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 negatrve (-) battery cable must be removed first and
rnstalled last. l Do not reptace with fuses exceedrng specified capacity
Cautron
l 8e sure that the ignitton and other switches are off
before disconnectrng or connecting the battery cables.
Failure to do so may damage the semrconductor
components. Caution l Repfacing a fuse with one of a larger capacrty than
desrgnated may damage components or cause a frre.
l Secure harnesses with provrded clamps to take up slack. l Tape areas of the harness
that may rub or bump l When mounting
components, be sure the
against sharp edges to
protect rt from damage. harness IS not caught or
damaged.
Caution
l Clamp all harnesses near vibratrng components (for
example, the engine) to remove slack and to prevent
contact resultrng from vibration. i Drsconnect heatsensitive l Make sure that the
parts (for example, relays
and ECU) when performing connectors are securely
connected when installed.
l Do not handle electrical components roughly or drop
them. maintenance (such as
weldrng) where
temperatures may exceed
80°C [176OFj.
-*
HI

A PRE-DELIVERY INSPECTION TABLE
PRE-DELIVERY INSPECTION TABLE
[EXTERlORI
INSPECT and ADJUST, of necessary. the followlng Items to
specrfrcatron:
0 Glass, exterior bright metal and paint for damage
0 Wheel lug nuts
0 Tire pressures
0 All weatherstrips for damage or detachment
0 Operation of bonnet release and look
0 Operation of trunk Ild, hatch and fuel lbd opener
(of equipped)
0 Door operation and alignment
0 Headtrght aiming
INSTALL the foltowrng parts
0 Wheel caps or rrngs (if equipped)
0 Outsrde mirror(s)
1 UNDER BONNET-ENGINE OFF j
INSPECT and ADJUST. If necessary, the following items to
specrflcatlon.
0 Fuel, coolant and hydraulic tines, fittings, connectlons and
components for leaks
0 Engine 011 level
0 Power steering fluid level (of equipped)
0 Brake master cylinder fluky levels
0 Clutch master cylinder fturcl levels (If equipped)
0 Wtndshreld washer reservojr flurd level
0 Radiator coolant level and specrfic gravity
0 Tightness of water hose clamps
0 Tightness of battery terminals, electrolyte level and specific
gravity
0 Manual transaxle oil level
0 Drive belt(s) tension
Cl Carburetor lrnkage (choke control, wrde open throttle posi-
tion. etc ) (carburetor model only)
q Accelerator cable and linkage for free movement
0 Headlight cleaner and flurd level (if equipped)
BLEED air from fuel line (diesel engrne only)
CLEAN the spark plugs (except for diesel engine)
piEi6F]
INSTALL the following parts
0 Rubber stopper for rnsrde rear view mirror (if equjpped)
0 Fuse for accessories
CHECK the operation of the following items.
0 Seat controls (sliding and reclining) and head rest
0 Seat belts and warning system
Cl Ign&on switch and steering lock
0 Power window (if equipped)
D Door tacks including child proof door locks
Cl Inhibitor switch (ATX only)
Cl All Ikghts rncluding warning and Indicator lbghts
0 Ignition key reminder buzzer (If equipped)
A-Z
0 Horn, wbpers and washers (front and rear, If equipped)
0 Antenna (tf equipped)
0 Cigarette Ibghter and clock (if equipped)
0 Remote control outside mirror (if equrpped)
0 Heater, defogger and air conditioner at various mode selec-
tions (if equlppedj
0 Sunroof (If equipped)
CHECK the following items
0 Presence of spare fuse
0 Upholstery and Interior finish
CHECK and ADJUST, If necessary, the followjng items:
IJ Operation and fit of windows
0 Pedal height and free play of brake and clutch pedal
0 Parking brake UNDER BONNET-ENGINE RUNNING AT
OPERATING TEMPERATURE
CHECK the following items:
0 Operation of Idle-up system for air condbtroner or power steer-
ing (if equrpped)
0 Automatic transaxle flurd levet
0 tnltial ignrtlon timing (except disel engine)
0 Idle speed
0 Operation of throttle positron. sensor (EGI engrne)
0 Operation of cold start device and glow plug warning light
(diesel engine only)
0 Operation of dash pbt (EGI.engine)
fTiGGJ
CHECK the following items.
0 Underside fuel, coolant and hydraulic Irnes, ftttlngs, connec-
tions and components for leaks
0 Trres for cuts or brurses
0 Steering Itnkage, suspensron, exhaust system and all under-
side hardware for .looseness or damage 1 ROAD TEST j
CHECK the following items
0 8rake operation
0 Clutch operation
0 Steering control
!ZI Operation of meters and gauges
Cl Squeaks, rattles or unusual noises
Cl Engine general performance
0 Emergency locking retractors 1 AFTER ROAD TEST ]
REMOVE the seat and floor mat protective covers
CHECK for the necessary owner information materials, took
and spare tire
m vehicle
93EOAX-002
-- MAIN Char3 t: In
A: PC R: F!t T: Ti! Emis! The ed : to t!

,,1
CONTROL SYSTEM F3 ‘1
Va: Battew voltage
Incorrect voltage Possible cause
Always OV
l ROOM IOA fuse burned l Open circuit In wiring from ROOM 10A fuse to ECU termina! 1A
Always OV
l Main relay malfunction l Open or short circuit in wiring from main relay to ECU terminal IB
Always OV (starter turns)
l Open or short circuit in wiring from ignition switch to ECU terminal IC
Always OV
Always VB
l Maln relay (FUEL INJ relay) malfunction l Open circuit in wiring from main relay to diagnosis connector terminal +B l Open or short circuit in wiring from diagnosis connector terminal MEN to
ECU terminal 1 D
l Poor connection at ECU connector l ECU malfunction
Always approx. 5V . ECU malfunction
Always below
2.5v
Always Ve -
-
No display on Self- * Main relay (FUEL INJ relay) malfunction
Diagnosis Checker
l Open circuit in wiring from main relay to diagnosis connector terminal + B
“88” displayed and
l Open or short clrcurt in wiring from diagnosis connector terminal FEN to
buzzer sounds con- ECU terminal tF
ti nuousl y
l Poor connection at ECU connector l ECU malfunction
Always QV
l Short circuit in wiring from igniter to ECU terminal 16
Always OV or VB
l Refer to Code No.42 Troubleshooting
(Refer to 323 4-Wheel Drtve Workshop Manual (12?9-IO-89L))
Always VB
Always OV
Always below
2.5V
Atways Ve I ’
l Fuel pump resistor/relay malfunction
l Open or short circurt in wiring from ECU terminal II to fuel pump resis-
tor/relay
A/C does not operate
l A/C reiay malfunction l Open circuit in wiring from ignition switch to A/C relay l Open circuit in wiring from A/C relay to ECU terminal 1J
A/C switch
OFF but l Short circuit in wiring from AIC relay to ECU terminal 1 J
A/C operates . ECU malfunction
l Poor connection at ECU connector l ECU malfunction
Always below 1 .OV a Short circuit in wiring from diagnosis connector terminal TEN to ECU termi-
nal 1K
Always Vs
l Open circuit In wiring from diagnosis connector terminal TEN to ECU terml-
nal IK
-
-
l Open circuit in winrig from diagnosis connector terminal GND to ground’
-
I -
.
. .
-. F3-47

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.

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

GI Troubleshooting
FindIng short circuits
Shorts occur between the power (positive) and ground (negative) sides of a circuit.
Therefore, finding a short circuit requires determining how the circuit is routed.
Circuits
not connected to control unit
I
Examples
ihort location 1 SvmWom
I Battery
,pOSlhl
terminal) lgnitbn switch
I Finding short circuit
4
1. Remove the fuse and
main fuse of the circuit.
2. Disconnect ail connecton
Of electrical components in the circuit.
3. Attach a voltmeter or test
Motor
M
Qi!
Short (A)
Short (8)
Short (C)
Short (0) l The motor operates
regardless of whether the
thermoswitch is ON or OFF
when the ignition switch is ..-..
ON. -
@The fuse is not melted.
0 The main fuse melts when the
ignition switch and thermo-
switch are ON and the relay is
operating.
lgnitlon switch
Switch short locatior
Short (A)
Short (B)
Short (C) Test lamp lamp to the fuse box and
reconnect each connector, beginning
nearest the power
, source. Circuits connected to control unit
1 Examples
Symptom
l Fuse melts.
Short (D)
Short (E) 14. Check the voltmeter
reading or test lamp as
the connectors are
connected.
l solenoid A operates when the
ignition switch is ON.
l The CPU transistor burns out
when the ignition switch is
turned ON.
l The CPU thinks the switch is
ON because the same
conditions exist as when the
switch is ON.
@The CPU senses the sensor
to be 0 Q because the same
conditions exist as when the
resistance value is 0 Q.
l The CPU equipped with the
self-diagnosis function outputs
the code. l-
Finding short circuit
1. Remove the fuse and main
fuse of the circuit.
2. Disconnect ail connectors oi
electrical components in the
circuit.
rest lamp 3. Attach a voltmeter or test
lamp to the fuse box and
reconnect each connector,
beginning nearest to the
power source.
Check the voltmeter reading
or test lamp as the
connectors are connected.
Sensor/switch
1. Attach the test lamp or
voltmeter to the CPU
connector.
2. Connect to the switch/
sensor connector.
3. Check the voltmeter reading
voltmeter reads OV or the test lamp
16

d-II __ EXCEPT F.R.GERMANY -CURRENT FROM BATTERY
-----CURRENT FROM IGl. IG2
-I 1--~-l-l-a-r-~ A, ,.,TiTl-TLITr r-.-a ar.1. ?I,-% ----CIJARENT FROM ACC
“-‘e 30A
I -mILLUMINATION LAMPS I-4
HiZP
r--- “f E-l
MAIN 00A FUSE l5A
q
-GA- I’LIE iHTS
---mm_
n POSITION LIGHTS E-l
TAIL 15A
-W/B
I
+-.
i-. I
i REAR WIPER
15A
-0J‘o ---- L/G _--- ;-.-&+v ---.
WIPER 20A .---$- ---. l REAR WIPER E WASHER o-2
m--c____ L _____ ;--:-; ____. l ;:E;H;E:;SHm
O-l
HEATER 30A
-- _-__ ,,,-j __-__; --me., HEATER
G
t
METER 15A : - - l COURTESY LAMPS I-3
-------B/y ---- + I
ZiUNROOF 15A : --•INTERIOR 6 SPOT LAMPS I-2
t
-oJy)--
G/O---:--- -t----.mSLIOING SUNROOF M
~~~~ .--- __ ___ n SOUN0 WARNING SYSTEM I-2
48s VALV
30A I
i
AES 60A +--t-
I mSTOF’LIGHTS F-3
ABS iOA
--- ’ ‘I ---
GNITION ! ;
iWITCH 1 I
TRUNK COMPARTMENT
‘LAMP I-3
‘mPOWER DOOR LOCK A
K-2
FUSE 30A
y-------t- --~--G/!---j--& .--- - l HEADLIGHT CLEANER O-l
I
’ . ---B/R---+-* ----
K-l
I PowE~~om!,IJ,+~~ -..---- -...;PO,.,ER WI,.,,,OWS
! I ENGINE 15A
’ I (’ I :
:.
.--
1 ----L ---- l -* ---- OJY) ---- FJ,w----l-q -..--
FUEL INJ ’ .-------------------:-L.---
’ I UENGINE CONTROL SYSTEM B-l
FUSE 20A
l REAR WINOOW DEFROSTER I-l
-- mCIGARETTE LIGHTER I-l
mAUOI0 SYSTEM J
aSTARTING SYSTEM A-l

FUSE BOX -
MAIN FUSE
25

---
HARNESS SYYBOL : E (F) m (E) ;HH (I) m (R) +++ (DR) c (IN) e (Ffl)G (EM)- (IN.0
A-2
FUSE BOX
FUSE BOX
-/x-all