battery MAZDA PROTEGE 1992 Workshop Manual

Troubleshooting Z-Gl-13
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Usina electrical test eaubment -----w - I - Equipment Use Operation Handling precautions
Test lamp Test for locating open or shorted l Connect the test lamp
0 Test lamps use 12V 1.4 or
R circuits. between the circuit being
3.4W bulbs or light- emitting
measured and a ground.
diodes (LED). Using a large
*The
lamp will light if the circuit
capacity bulb may damage the
is energized to the point
CPU.
,.WD,.l
b tested.
Jumper wire
Used to create a temporary l Connect the jumper wire 0 Do not connect the power side
circuit. between the terminals of a directly to a ground as this
circuit to bypass a switch, etc. may burn the harness or
damage electrical
/d<;>‘-
d components.
I
n
Voltmeter
Used for measuring the voltage
l Connect the positive (+) lead l Connect the voltmeter In
of a circuit to locate possible to where voltage is to be parallel with the circuit.
opens or shorts. measured and the negative
0 Set the range to the desired
(- ) lead to a ground. voltage.
l Use the service hole when
measuring the voltage at the
diagnosis connector.
~Tie a thin wire to the posrtive
(+) lead to access narrow
terminals.
Ohmmeter
Ammeter Used for locating opens and
l Zero the ohmmeter. *Zero the meter after switching
shorts in the circuit, confirming
I to the measuring range.
continuity of switches and
checking sensor resistance. &.--
l Before using the ohmmeter,
make sure that the ignition
l Verify that current is not switch is OFF or the negative
flowing through the circuit. (- ) battery cable is
0 Touch the leads to the check disconnected to prevent
points.* burning the ohmmeter.
Used for checking alternator
l Connect the ammeter in l Set the range to the desired
output, current supplied to the series with the circuit by
voltage.
starter, and dark current within a touching the positive (+) lead
l Connect the ammeter in series
circuit. to the power side terminal and
with the circuit. The ammeter
the negative (- ) lead to the
may be burned If it is
Note ground- side terminal.
connected in parallel.
Dark current is the current
flowing through the circuit when
the Ignition switch is OFF.

Z-GM 4 Troubleshooting
Measuring voltage
, ’
Battery
(positive te;minal) lgnitipn switch
Voltmeter
Fuse
Motor Therm0
switch
+ r-
Ground 2 Ground 1
I
!I4 aD
0 0
Test lamp
or
f
“J-
1. Use a Voltmeter or &St lamp to ascertain voltage at the
measuring points.
Circuit operation
Measur-
ing points Ignitio&Gtch: Ignition switch:ON
Thermo switch: Thermo switch:
OFF ON
@ ov x 12v ‘6 12v
‘6
a ov x 12v ~6 ov
X
c ov x ov x ov X
B: 12v ‘6 12v ‘6 12v ~‘. 0
cc ov x ov X 12v .’ 0
@ ov x ov x ov X
‘b’ : Test lamp ON
x : Test lamp OFF
neasuring voltage of connectors Poor contact
A voltmeter lead may momentarily connect a terminal when
inserted into the connector and give an erroneous reading
when checking for rmproperly engaged connectors, poor
terminal contacts, or loose terminals.
Voltmeter lead
Measuring voltage of ground unit
Touch the voltmeter lead to the ground wire when checking
the ground circuit.
Poor contact

Troubleshooting Z-Gl-I 5
Measuring continuity/resistance -
Touch the ohmmeter leads to the switch terminals to check
continuity.
Caution
Verify the operating state of the switch before checking
continuity because readings vary accordingly.
Remark
The negative (- ) lead of the ohmmeter is connected
to the positive terminal of the internal ohmmeter
battery. The positive (+) lead to the negative terminal
of the battery. Continuity is checked according to the direction of the positive
(+) and negative (-) leads of the ohmmeter in the circuit
containing the diode.
Connection Continuity
Yes
NO
Verify the operating state of the sensor before checking
resistance because readings vary accordingly.
1. Short between the terminals with a jumper wire to discharge
the capacitor.
2. Set the ohmmeter range to xl Ok Q and connect it to the
capacitor terminals.
3. The capacitor is good if the needle of the ohmmeter swings
once and returns to it original position.

II-GM6 Troubleshooting
Finding short circuits
Shorts occur between the power(positive) and ground(negative) sides of a circuit.
Therefore, finding a shdit circuit requires determining how the circuit is routed.
Circuits not connected to control unit
Examples
Indication
0 Fuse melts. Finding short circuit
0
Test lamp 1. Remove the fuse and
main fuse of the circurt.
2. Disconnect all connectors
of electrical components
in the circuit.
3. Attach a voltmeter or test
lamp to the fuse box and
reconnect each
connector, beginning
nearest the power
source.
4. Check the voltmeter or
see if the test lamp lights
as the connectors are
connected. Finding short circuit
,,{:““o
1. Remove the fuse and main
fuse of the circuit.
2. Disconnect all connectors of
/ electrical components in the
circuit.
Test lamp 3. Attach a voltmeter or test
lamp to the fuse box and
reconnect each connector,
beginning nearest the power
4. Check the voltmeter or see
if the test lamp lights as the
connectors are connected.
Sensor/switch
1. Attach the test lamp or
voltmeter to the CPU
connector.
2. Connect to the swrtch/
sensor connector.
3. Check the voltmeter or see
if the test lamp lights.
A short has occurred where voltmeter
reads OV or the test lamp goes out,
- Short location
Battery Short (A)
l Main fuse melts.
L* Short(B)
0 The motor operates regardless
of whether thermoswitch ON
or OFF when the ignition
switch is ON. Short (C)
lotor
M
P The-
tmo-
switc *The fuse is not melted.
@The main fuse melts when the
ignition switch and thermo-
switch are ON and the relay is
operating. Short (D)
Circuits connected to control unit
-T Examples
Indication
l Fuse melts.
- Short locatior
I
ignition switch
I
Fuse R-l Short (A)
J+L--l
Short (A) l Solenoid A operates normally
when the ignition switch is
ON.
9enold m rfr solenok
;<
A) u a(B) ’ Short (6)
l The CPU transistor burns out
when the ignition switch is
turned ON. Short (C)
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 R because the
conditions exist as when
resistance value is 0 R
*The CPU equipped with the
self-diagnosis function output
the malfunctron code. Short (0)
Swltcl1 ml
Short (E) Z-16

WIRINQ DIAQRAM 2
-CURRENT FROM BATTERY
W II f”‘l FCTRICAL WIRING SCHEMATIC _1_=;!:: %% :% I’*
BATTERY
P-
f
30A HEAD SYSTEM NAME
-a
c------
15A TAIL I
t-
BOA
MAIN
7 ST /;
(i
IG
:
:
1
:
I
20A ?--
AD FAN
_-. --
VW/B : I
I
I
I TRUNK COMPARTMENT
l LAMP I-3
:
I ( - n COURTESY LAMPS I-3
I
1OA
3EAR WIPER I
-- ---- L,G--/-~~-.=/zzI~~~
l REAR WIPER 6 WASHER D-3
20A WIPER
30A HEATER
,-w ---- L,w-l;c::::
I
INSTRUMENT CLUSTER
l & WARNING LAMPS C
15A METER
-----+yy _---
IOA ROOM
-1
t
----------.mBUCK-UP LIGHTS F-3
20A STOP
-G/W i - m HORN F-3
1
I
F-2
/--------%CRUISE CONTROL SYSTEM 0
. l SHIFT-LOCK SYSTEM
15A
HAZARD
I-- ------. H
--- _------
TURN 6 HAZARD
--o----B/R ; n FLASHER LIGHTS F-l
I
IPOWER DOOR LOCK K-;
’ PASSIVE SHOULDER BELT s
-mCONTROL SYSTEM
+-B/R--+-/ “Yr. I YV.LI, T.AI1a.A
---------B/W----~-i-t------. n P,-&,ER WINDOW
K-l
I
1
I I 15A ENGINE
- - I
:-,-..-L ----.- T -------- B,wl--‘-
; 30A FUEL INJ ’ a...
I- W/G ’ --------.=ENGINE CONTROL SYSTEM y-2
t ----------e--e-_ I--- ---_ .w-.w-.m-.
I
I t
: I 0
WDIGITAL CLOCK I-l
,
I 20A DEFOG I r-- WINDOW DEFROSTER 1-1
B/L I -- mCIGARETTE LIGHTER I-l
:
_ mAU’)IO SYSTEM
i----a,w-.--15A RAo1o -.-L,e-i~---i--mPOWER J
OUTSIDE MIRRIOR L
30A COOLING FAN L- ------------.
l COOLING FAN SYSTEM ;-4
B/R-p-
l STARTING SYSTEM A-l

VE Batmy voltage
1 Ve: Battery vm
i
Remark
Termfnal Input Output Connection lo
Test conditkm
colmct voltage Remark
2W
0 Iscvalve lgmtian swdch ON
Approx. iv
-
Idle Appror. 9v
2x
0 Solenoid valve
lgnitlon switch ON
VS
(Purge control) -
IUk
VB
2Y - - -
-
-
@i switch
)N le
I!
C
4
-C
,
,
e
”
3
-C
.
f
-
-
-
)nition switch
)N I I I
I I
I -
22 - - -
- -
-
-
-
luilt in airflow
1eter
lnition swttch
)N
-
VICS: Vata&
Inertia charging
SYStem loaHCl
-
Engine Signal
Monitor: Green
and red lamps
flash
mnin
2H
- I Main relay (w=w I Ignition switch ON
VB
_/I/ - I -
I - 21
25
-7 I - I -
I - , I t 0 Air-flow meter constant
4.5-5.5v 2K
I I I
I
0 I 1 Thr0tlle sensor Accekrator pedal r&eased
4.5-5-W
I I (Power switch)
Accelerator pedal fuUy depessed ov
2M
l-l - I -
-
I -
0 oxygen sensw Ignitia switch ON
ov
Idle (Cold engine) ov
Idle (After “ram-up)
O-l .ov
Increasing engine speed (After warm-up) 0.5v-1 .ov
oeceleratlon
0-0.4v
0 Airflow meter Ignition switch ON
Ap~rox 3 8L
ldk Approx. 3.3 2N
20
2P
0 Intake air ther- Ambient air temperature 20°C (68” F)
mosensor
W W Ap&xox 2 5V
0 water thermosensor Enaine coolant temperature 20°C (68°F)
ADDTOX 2.5\( 20
2R
2s
,.
After “am-up B&w 0 5v
I I I I
- - - - -
0 Sdenoid valve Engine speed below 5.000 rpm Below 1 5v
ww
Engine speed above 5.000 rpm VB
2T I 0 lsolertoid valve
I60 jDOHCl/l20 ISOHCI seconds after en- 1
/ I--
temperature abo& 56°C (136 o F)
(OOHC]/SO”C (122°F) (SOHC]
0 Injector (Nos. 1.3) Other condition at idle VB
Ignition switch ON
Vt7
Idle
VB‘ 2u
2v Engine speed above 2.000 rpm on
decderation (After warm-up) Ve
0 Injector (NOS. 2. 4) Ignition swatch at id& VB
idle
VS.
Engine speed above 2,000 rpm on
deceteratiin (After warm-up) VS

Terminal vdt
wminal lrput
1A -
1B 0
-
1C 0
1D e (ATX) ve: aattefy voltage
1
Connected to
I Test wndition ~cwrect rc4t.gej F&W*
-
0
-
-
3attery
Uain r&y
:FUEL INJ relay) Constant
tgnition swdch V% For backt@
OFF ov
ON V6
Ignition swtch
(START)
Self-Diagnosis
Checker
[monitor lamp)
3 - White crankii npprox 1ov
fgnition switch ON ov
Test swtch at “SELF-TEST’ With Self-
Lamp illuminated for 3 sec. after igmtmn 4.5-5.w Diagnosis Check-
switch OFF-+ON er and System
Selector
Lamp net illuminated after 3 Sec. VS
Test swtch at “02 MONITOR” at idle
i Monitor lamp illuminated 4.5-55v
Test switch at “02 MONtTOR” at idfe
Monitor lamp not illuminated
Malfunction indicator
lamp illuminated for 3 sec. after ignition
Below 2 5v With System
lalllp switch OFF+ON selector test
WLI switch at
Lamp not luminated after 3 sec. VE
“SELF-TEST”
lamp ifluminated BelOW 2.w
Lamp not illuminated VS
Self-Diagnosis Buzzer sounded for 3 sec. after ignrtion
l With Self-
Checker switch OFF-+ON Below 2.5V
Diagm!3s
(code number) Checker and
Buzzer not sounded after 3 set VB
system
Select0 Buzzer sou&?d Below 2 5v l With System
Selector test
I Buzzer not sounded
tgmter Ignition switch ON ov
Idle Appror 0 2v -
Headlight switch Headlights ON
f VB
-
Headlbhts OFF ! ov
Diagnosis
connector
, System Selector test switch at
VS Ignition witch
“02 MONITOR” ON
(TEN terminal)
Rear window
defroster switch
Ground Icalifornia) System Selector tesf switch at
“SELF-TEST”
Rear window defroster watch OFF
Rear window de!roster watch ON
ConSlant QV
ov lgmhon switch
__ ON
VO
ov
- Main relay (canadal fgmtion switch ON VB
AC relay Ignitiin switch ON VB
A/C switch ON at Idle Below 2.5% -
Vehicle speed A/C switch OFF at Gle
/ Vehicle stopped
P/S pressure
switch lgmhon switch ON
P/S ON at idle Iturnino)
I.
P/S OFF at idle I VB Terminal voltage v‘s: Battery vottage
I I
1
Terminal input Output Connected to Test condition comcl voltage Remark
10
0 A/C swatch AIC switch ON Befow25V ignition switch
ON and blower
A/C switch OFF VB I
motor ON
IP
ii Blower control Blower control swtch OFF or 1 St poSItion VB tgnibon switch
switch ON
Blower control switch 2nd or higher
ov
position
1Q
0 Stopltght switch Brake pedal released Below 1 ov
-
IT <; Brake pedal depressed VE
lnhtbitor switch N or P range ov Ignition switch
(P N range) ON
Other ranges VB
Cruise control man Set or Resume swtch ON or vehicle speed lgmhon swtch
switch 8kmih &mph) lower than preset speed &tow 1 5~ ON
(Drwng vehcfe crwse cantrol
OperatiOn)
Fk
z 1v -
3A ’ Throttle Sensor
(Idle switch) Normal conditions
Accelerator pedal released
Accelerator pedal depressed “8
Bebw 1 ov lgnihon swatch
ON
VS
I -
-
- - -
-
-
- - -
D&rib&r
-‘. / b / / (Ne-signal) lgmtion swtch ON
/ ,,,, Approx. OV
or 5v
-
Approx 2v
I ._.
/
28 1
AdlOw meter lgmhon switch ON
Approx 3 BV .,
-
Idle Approx 3 3V
2c j r:
I \’ oxygen sensor fgmtson switch ON ov
1
20 Idle (cold englIIei
Idle (after warn-up)
lncreasma enwe speed (after warm-up) ov
O-l ov -
0 w-1 .ov
_ -
,
Deceleration o-o 4v
Coolmg fan swtch Fan operahng (engine coolant temperature
over 97°C (207’F) or diagnosis connector DV
termmat TFA grounded) -
Fan not operatmg (idle)
Water thermosensor Engine codant temperature L” %, I”” I , ‘Y”8’.“” . . . ...-1.
After warm-up
I
Thrnttb SP”SOi 1 Accelerator pedal released Approx 0.5V
2G .._..._ --..--
-
Accelerator pedal fully depressed Approx. 4 OV
0 ATF thermosensor -XPC (-2o”~)--1x1~c (302°F) aprxox as5-~m lgmhon swtch
ON
ATF temp 20°C (68°F) Approx. 4.6V
13OOC (266°F) Aporox 1.54V
I I I I I I
2H / i, I / Hold switch Hold mode Below 2V Ingbhon switch
Normal mode

fgnltio” switch ON Ve Battery von%ge
rrmin%l Inpu( Output
Connected to
3u
0 Injector (Nos 1, 3)
I Test condition curact von%ge Remmk r 1 lon~tii switch ON I
I
VB 1 ‘Enaine S~anal
Idle
Engine speed above 2.000 rpm on deceler-
atton (after warm-up) V%
VB Monitor: Green
and red lamps
fksh
3v
3w
3x 0 Injector (Nos. 2. 4) Ignition switch ON VB
tdk VS
Engine speed above 2,000 rpm on dec%kr-
atlo” (after warm-up) VS
ci 1-2 shift soknold Solenoid valve ON V%
whtk during
valve
Soknold valve OFF ov
0 2-3 shrft solenoid Soknold valve ON
V% wh6k during
valve
Solenoid valve OFF ov
3Y
32 0 3-4 shift solenoid Solenoid valve ON
vs while during
valve
Solenoid valve OFF ov
0 Lock up solenoid Solenoid valve ON
V% while during
valve
Soknoad valve OFF ov
i

j Z WlRiNQ MAQRAM A.. .EC-AT 0 .CANACA
/
l NSTRUMENT CLUSTER & WARNING LAMPS *...WITH PASSIVE SHOULDER BELT
c
BATTERY
0 01 MAIN
BOA
0 0, B (E)
0 (F)
.-I
FLASHER UNIT
SECTION F-l
(SECTION E-3) HEADLIGHTS
(SECTION E-2) INSTRUMENT CLUSTER
ILLUMINATION LAMP
;REFER TO SECTION I-4
k,
JR-06 @
METER
15A
STARTING SYSTEM
(SECTION n-i)
E J&O4 0
WY
Fl
I
INSTRUMENT CLUSTER
OOHC SEYSOR
&
:-04 PARKING BRAKE C-07 WATER THERMOSENSOR
SWITCH (I?) (EMI
(INJI
DOHC

Vs: Battery voltags
Terminal Connecte4t to
Voltage . . . Procedure
a (Output) Actuator ov Ignition switch ON
Approx. 9V Main switch ON
b (Output) Actuator ov Ignition switch ON
Approx. 9V Main switch ON
c (Output) Actuator ov Ignition switch ON
Approx. 9V Main switch ON
d
e (Input) Cruise control main VEI Ignition switch ON
switch (N.C)
f (input) Cruise control main Ve Main switch ON
switch (N.0).
9 Wwft) EC-AT control unit VI3 Ignition switch ON
(only ATX)
h (Output) Stoplight switch 2 (NC) Approx. 9V Main switch ON
i (Input) Inhibitor switch (ATX) ov “N” or “P” range and main switch ON
Note Approx. 5V Other range and main switch ON
Disconnect
EGI control Clutch switch (MTX) ov
Clutch pedal depressed and main switch ON
unit connector Approx. 5V Main switch ON
I (Input) Horn relay VB Horn switch OFF
m (Input) Stoplight switch 1 (N.0) ov Ignition switch ON
VEI
Brake pedal depressed
n (Input) Cruise control switch VE Main switch ON
(Resumelaccel switch) Approx. 9V While pushing the resume/accel switch after main switch
ON
Cruise control switch VEI Main switch ON
(Set/coast switch) Approx. 5V While pushing the set/coast switch after main switch ON
0 (Input) Stoplight switch 2 (N.C) Approx. 9V Main switch ON
ov
Brake pedal depressed
P (Input) Speed sensor Run out
Note While rotating the rear tire
between
O&connect 0-w
EC-AT control
unit connector
q
r
S Battery Vs
Constant
t Ground ov
Constant