1992 MAZDA PROTEGE sensor

T.&condition
-t
Off
IQ”&” switch
ON
Whik cranking
lgnitlon switch ON
Test switch at “SELF-TEST”
Lamp illuminated for 3 sec. after ignition
SwiIch OFF-KIN
Lamp not illuminated after 3 sec. collect vdtaQe
ReRlar*
ve
For backup
ov
-
V%
Approx. tov
ov
4 5--5.5v With Self-
D&Q”& Check-
er and system
Vi3 st?lt?ctor Input &PJ
- -
0
0
0
0
0
0
- -
- -
0
0
c
- -
0 connectkfl to mnina
Connection to
Stoplight swtch Test condition
-L 1A
Bake pedal released
IEI
IC Main relay
(FUEL INJ relay) Brake pedal depressed
lQ”ih0” switch ON
___-- P/S Qrc?ss"re
switch
Ignition switch
(START) P/S ON at idle
P/S OFF at idle
A/C switch ON
A/C switch OFF
Cwlng fan operatng (Engine coolant tem-
perature over 97°C (207°F) or dlagnosls
connector terminal TFA grounded) (IG ON)
Fan not ooeralmg (Idle) 1D .self-mag”osls
Checker
(Monitor lamp) A!C switch
coohng fan swtctl
Test switch at “02 MONITOR” at idle
Monitor lamp ilfummated
Test switch at “02 MONITOR” at idle
Monitor lamp not illuminated
Lamp illuminated for 3 sec. after ignition
switch OFF&N
Lamp not illuminated after 3 ser.
Lamp illuminated
Lamp not #lluminated VB
Below 2.w With System
Selector test
VB swtch at
“SELF-TEST”
Eelow 2.5v
VS Blower Control
swttch Blower control switch OFF or 1 st posihon
Blower control swtch 2nd or htgher
position 1E
Malfunction indicator
lamp
NJ
Rear window defroster swtch OFF Rear wmdow
defroster switch
Headkght switch Rear window defroster Switch ON
-2-A - I
tieadlghts ON
Headlights OFF
Neutral positton or clutch pedal
depressed
OlhWS l Wiih Self-
DkQnosls
Checker and
Svstem Selector Self- Diaanosis Buzzer sounded for 3 sec. after ignition
switch OFF-ON
Buzzer not sounded after 3 set 6&w 2.5v
V8 Checke;
(Cede Number) I
ov Ignition swtch
ON NeulraliClutch
switches
. ‘.&h System
Selector test
switch at Buzzer sou”ded
1 Below 2.5V 1
VB
ov -
ov -
ov -
ov -
APprox. ov
or 4 5-5 5v
-
Approx. 2V
-
-
AQWOX. Ov
or 4 5-5 5v
-
APQ~OX 1.5V Buzzer not sounded
I VE
I
Ground (Injector)
Ground
(OUtQUt)
Ground (CPU)
Grou”d (Input)
constant
lgnlti swtch ON
klk “SELF-TEST”
ov
-
Ap~rox O.2V
- - Constant
Co”stant lgnller
1H
Constant
Igntho” swdch ON -
- D&ribulor
(Ne-sIgnal) II
1J
1K
1L
1M
1N -
fgnition switch ON
AX switch ON al idle
NC switch OFF at Idle
System Selector lest switch at
“0-z MONITOR” I -
- VB
5&w 2.w -
Vi3
VB Ignition switch
ON
System Selector test swatch at
“SELF-TEST”
ParkIng brake pulled wth lgndlon swtch ON
(DRL OFF) ov
VB
l DRL: oaytime Running tigms
Idle (DFtL ON) Below 2.5v A/C relay
Idle
-
Ignition swtch ON
-
Distributor
(G-stgnal) [DOHC]
3ignosis
x”“ec1or
,TEN terminal) Idle
3RL relay (canada)
-
Accelerator pedal released
Accelerafor pedal depressed
-
ov
VB
-
Ignition switch
ON rhr0ttte sensor
‘Idle switch)

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

L WIRINQ DIAQRAM
EGI EC-AT HENGINE CONTROL SYSTEM 6 EC-AT CONTROL SYSTEM(1/3) <>. .DoHC 0 .ChNADh b-2
THERMOSWITCH
(SECTION 8-41 MAIN
- -
INSTRUMENT CLUSTER
+ Y/L (EM)
I I I I
Q
I
DIAGNOSIS CONNECTOR
(SECTION u)
II R/L
(EM)
1 ;
2-01 ENGINE CONTROL UNIT (EM)
162-02 MAIN RELAY (ET
1” IS 10 10 IM 1K 31 IG 1E IC 1A
x w G G/B G/R “,$%G,‘Y G/W Y/B V L/R
x R/W 0/L O/L L/Y C/B B/L R/B W/B w/y W/R
,” ,T 117 ,P IN 3L IJ 1H IF 10 16 20 2M 2K 21 26 2E 2C 2A
/L W/L R/B -G/ W/E L/W R/L W
R/Y Y/L * “t R/%-G/k B/G R
2P 2N 2L 2J 2H 2F 2D 28 3Y 3W 3U 35 30 30 3M 3K 31 36 3E 3C 3A (FUEL INJ)
0 L/O Y 3c L/O * G/O *
BpJY/W Y 3/L B/O
L L/Y Y/B * x * * *
* Y/R yp’ 3/B B/O
32 3X 3V 3T 3R 3P 3N 3lL 3J 3H 3F 30 38
2-03 CIRCUIT OPENING 82-04 FUEL TANK UNIT(R) 82-05 IGNITER (EM1 82-06 CONDENSER (EM) 82-07 IGNITION COIL (EM)
RELAY iEM)
B/G
B 82-08 OXYGEN SENSOR (EM)
z-34

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

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

NC RELAY
E%E” SOlJSOlO VALVE
MERMOSENSOR
PL
4

DIAGRAM Z
rl PARTS NAME
-
PA ,K
SECTION T
CIGARETTE LIGHTER ............................................
I-1
CIRCUIT OPENING RELAY ..............................
B-l&Pa
I CLUTCH
SWITCH .............................................. B-lc
CONDENSER ................................................. B-la.2a
CONDENSER FAN ..................................................
G
CONDENSER
FAN RELAY ....................................... G
COMBINATION
SWITCH .................................... E-l.2
COOLING FAN MOTOR .....................................
B-3,4
COOLING
FAN RELAY ........................................ B-3,4
COURTESY LAMP ................................................
l-3
CPU .................................................................... l-2
CRUISE CONTROL
MAIN SWITCH ........................... Q
CRUISE
CONTROL SWITCH .................................... Q
CRUISE CONTROL UNIT ......................................... Q 0 ACTUATOR ........................................................... Q
A/C RELAY ........................................................... G
t A/C SWITCH .........................................................
G
t AIRFLOW METER .......................................... B-lc,Pc
t ALTERNATOR .....................................................
A-2
I AUDIO SYSTEM .....................................................
J
@BACK-UP LIGHT .................................................. F-3
BACK-UP LIGHT SWITCH
..................................... F-3
I
BLOWER MOTOR ...................................................
G
h BLOWER SWITCH ..................................................
G
I BRAKE FLUID SWITCH ...........................................
C
BUCKLE SWITCH .............................................
l-2, S
@I DIAGNOSIS CONNECTOR .......................................
U
DIGITAL CLOCK
................................................... l-l
DIODE ..................................................................
G
DISTRIBUTOR ...............................................
B-l b,2b
DOOR CATCH SWITCH .......................................... S
DOOR
SPEAKER ..................................................... J
DOOR SWITCH ....................................................
l-2
DRL CONTROL UNIT ............................................
E-3
DRL RELAY .........................................................
E-3
ORL RESISTOR ....................................................
E-3
ENGINE CONTROL UNIT
.................................... B-1.2
ii@ FLASHER UNIT ....................................................
F-l
FRONT TURN LIGHT ............................................
F-l
FUEL METER
......................................................... C
FUEL
TANK UNIT .......................................... B-la,2a
HAZARD SWITCH ...............................................
F-l _
HEADLIGHT .....................................................
E-l.2
HEADLIGHT RELAY .............................................
E-2
h HIGH
MOUNT STOPLIGHT ....................................
F-2
h HOLD SWITCH .................................................. B-2c
4 HORN .................................................................
F-3
! HORN RELAY
...................................................... F-3
HORN SWITCH ....................................................
F-3
0 IC REGULATOR ..................................................
A-2
-L
T-S INDEX
PARTS NAME SECTION
IGNITER ........................................................ B-la,2a
IGNITION COIL ..............................................
B-la.2a
IGNITION KEY CYLINDER LAMP .............................
l-2
IGNITION KEY REMINDER SWITCH ........................ l-2
ILLUMINATION LAMP
A/C SWITCH ..................................................... l-4
AT SELECT
....................................................... l-4
AUDIO SYSTEM
................................................. l-4
BLOWER SWITCH .............................................
l-4
CIGARETTE LIGHTER
......................................... l-4
CRUISE CONTROL
MAIN SWITCH ....................... l-4
HAZARD SWITCH .............................................
l-4
INSTRUMENT CLUSTER
..................................... l-4
REAR WINDOW DEFROSTER SWITCH
................. l-4
INHIBITOR SWITCH .................................... A-l, B-2c
INJECTOR ....................................................
B-1 b,2b
INSTRUMENT CLUSTER ..........................................
C
INTERIOR & SPOT LAMP .......................................
l-2
ISC VALVE ...................................................
B-1 b,26
@ LICENSE PLATE LIGHT .........................................
E-4
LIMIT SWITCH .......................................................
S
481 MAGNETIC
CLUTCH .............................................. G
MAIN RELAY (FUEL INJ) ................................
B-la,Pa
@ NEUTRAL SWITCH ............................................
B-lc
@ OIL PRESSURE SWITCH ..........................................
C
OXYGEN SENSOR ......................................... B-la.2a
@ PANEL LIGHT CONTROL .......................................
l-4
PARKING BRAKE SWITCH ......................................
C
PASSIVE SHOULDER BELT CONTROL UNIT
.............. S
PASSIVE SHOULDER BELT
MOTOR .......................... S
POSITION LIGHT .................................................
E-4
POWER DOOR LOCK MOTOR
............................... K-2
POWER DOOR LOCK RELAY
................................. K-2
POWER DOOR LOCK SWITCH
.............................. K-2
POWER
OUTSIDE MIRROR ...................................... L
POWER OUTSIDE MIRROR MOTOR
.......................... L
POWER OUTSIDE MIRROR SWITCH .........................
L
POWER STEERING PRESSURE SWITCH ........... B-l b.2b
POWER WINDOW MAIN SWITCH .........................
K-l
POWER WINDOW MOTOR ...................................
K-l
POWER WINDOW SWITCH
.................................. K-l
@ REAR TURN LIGHT ..............................................
F-l
REAR SiDE MARKER LIGHT ..................................
E-4
REAR
SPEAKER ......................................................
J
REAR WASHER MOTOR ......................................
D-3
REAR WINDOW DEFROSTER
................................. I-1
REAR WINDOW DEFROSTER SWITCH ....................
I-1
REAR WIPER MOTOR
.......................................... D-3
REAR WIPER & WASHER SWITCH
........................ D-3
REFRIGERANT PRESSURE SWITCH
.......................... G
RESISTOR ASSEMBLY ............................................
G