1992 MAZDA PROTEGE cruise control

F TROUBLESHOOTING GUIDE
Output Devices and Engine Conditions
Note
. The data in this chart is for reference only.
INJECTOR
CONDITIONS
CRANKING
-COLD ENGINE
l COLD AIR l COLD COOLANT
COLD START
-FAST IDLE
l COLD AIR l COLD COOLANT
COLD DRIVEAWAY
-PART THROTTLE
l COLD AIR l COLD COOLANT
WARM DRIVEAWAY
-PART THROTTLE
. WARM AIR
l WARM COOLANT
HOT CRUISE
l WARM AIR l WARM COOLANT Zero
One
mrnute
Two
minutes
Three
minutes
I AIR
INJECTION “AL”E
INJECTION TlMlNG
A
All A
cylinders
each
ignition
pulse
1
Rich Open:
coolant
tem-
perature:
Below
40%
(104OF)
,
I/
Rich and
2-group” 1’
lean l-group” /I
,
i
HOT ACCELERATION
-60% THROTTLE
-lOT ACCELERATION
-WIDE OPEN
THROTTLE
Closed ISC
VALVE
1, THREE-WAY
SOLENOID SOLENOID
VALVE VALVE
(PURGE
(PRESSURE
CONTROL) REGULATOR
CONTROL)‘3
c
OFF
(Purge
cut)
Large
1
, AK
RELAY
amount or
bypass air
OFF
(Vacuum
to
pressure
regulator)
After start-
rng: ON dur-
ing hot start
only (Vacu-
um cut)
OFF
l 2 SOHC, *’ BP
F-22

CONTROL SYSTEM
VB: Battery voltage
erminal Input Output
Connection to Test condition Correct voltage
Remark
1L
0 A/C relay Ignition switch ON VB
A/C switch ON at idle Below 2.5V
A/C switch OFF at idle V0
-
1M 0
1N 0 Vehicle speed
sensor
P/S pressure
switch While driving 4--5v
Vehicle stopped 0 or 8V
Ignition switch ON
VB
P/S ON at idle
ov
P/S OFF at idle Vi3 -
-
10 0 A/C switch A/C switch ON
A/C switch OFF Below 2.5V ignition switch
VB ON and blower
motor ON
IP 0 Blower control
switch Blower control switch OFF or 1st position Ve ignition switch
Blower control switch 2nd or higher po- Below 1 .OV ON
sition
1Q 0
1R 0
1s 0
IT 0 Stoplight switch Brake pedal released Below 1 .OV
-
Brake pedal depressed VI3
Inhibitor switch N or P range ov Ignition switch
(P, N ranges) ON
Other range VI3
Cruise control main Normal condition
VB Ignition switch
switch ON
Set or Resume switch ON or vehicle speed Below 1 .OV
8 km/h (5 mph) lower than preset speed
(Driving vehicle cruise control operation)
Throttle sensor Accelerator pedal released Below 1 .OV Ignition switch
(Idle switch)
Accelerator pedal depressed V0 ON
1u - - -
- - -
1v - - - -
- -
2A 0 Distributor Ignition switch ON Approx. OV
(Ne-signal) or 5V -
Idle Approx. 2V
LY”“l I. A3 311 blFY.1.
J
- .*
F-160

CONTROL SYSTEM
Incorrect voltage Possible cause
VB: Battery voltage
Always below
2.W A/C does not operate l A/C relay malfunction (Refer to page U-55) l Open circuit in wiring from ignition switch to A/C relay l Open circuit in wiring from A/C relay to ECU terminal IL
AIC switch OFF but
l Short circuit in wiring from A/C relay to ECU terminal 1L
A/C ooerates l ECU malfunction
Always Va
l Poor connection at ECU connector l ECU malfunction
Always OV
l Vehicle speed sensor malfunction (Refer to page K-143)
l Short circuit in wiring from vehicle speed sensor to ECU terminal 1M
l Vehicle speed sensor malfunction (Refer to page K-143) l Open circuit in wiring from vehicle speed sensor to ECU terminal 1M
Always OV
l P/S pressure switch malfunction (Refer to page F-173) l Short circuit in wiring from P/S pressure switch to ECU terminal 1P l ECU malfunction
Always Va
Always below 2.5V (Blower fan OK)
Always Ve (Blower fan OK)
l P/S pressure switch malfunction (Refer to page F-173) l Open circuit in wiring from P/S pressure switch to ECU terminal 1P l Open circuit in wiring from P/S pressure switch to ground
l A/C switch malfunction (Refer to page U-55) l Short circuit in wiring from A/C switch to ECU terminal IQ l Poor connection at ECU connector l ECU malfunction
l A/C switch malfunction (Refer to page U-55) 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
Always OV (Blower fan OK)
Always VB (Blower fan OK)
Always below 1 .OV (Stoplight OK)
l Short circuit in wiring from blower control switch to ECU terminal 1s l Poor connection at ECU connector
l ECU malfunction
l Open circuit in wiring from blower control switch to ECU terminal 1s
l Open circuit in wiring from stoplight switch to ECU terminal 10
Always OV
Always Ve
l Inhibitor switch malfunction (Refer to page K-141) l Short circuit in wiring from inhibitor switch to ECU terminal 1R
l Inhibitor switch malfunction (Refer to page K-141) l Open circuit in wiring from inhibitor switch to ECU terminal 1R
Always OV
l Cruise switch malfunction (Refer to page T-21) l Short circuit in wiring from cruise switch to ECU terminal 1s
l Cruise switch malfunction (Refer to page T-21) l Open circuit in wiring from cruise switch to ECU terminal IS
Always OV
l Throttle sensor misadjustment (Refer to page F-169) l Short circuit in wiring from throttle sensor to ECU terminal 1T
l ECU malfunction
Always Va
I
l Throttle sensor misadjustment (Refer to page F-169) l Open circuit in wiring from throttle sensor to ECU terminal 1T
-
I - - -
Always approx. OV or approx. 2V l Refer to Code No.02 Troubleshooting (Refer to page F-86)
F-l 61

WINDSHIELD WIPER AND WASHER
Wiper does not operate in Lo or Hi position
(With wiper relay)’
I
Check WIPER 20A fuse
Repair harness and replace fuse
VB: Battery voltage
OK
Turn ignition switch ON
Check for battery voltage at terminal-wires (L) of wiper
relay connector NG
- Repair harness (Fuse box-Wiper relay)
I OK
Check for battery voltage at terminal-wires (W) and
(G/W) of above connector
I Replace wiper relay (Refer to Section T)
OK
Disconnect wiper switch connector;
check for battery voltage at terminal-wires (W) and
W’J) Repair harness (Wiper relay -Wiper switch)
I OK
Check for continuity of above connector terminal-wire
(B) to ground
I
Repair harness (Wiper switch-Ground) 1
1 OK
Check wiper switch (Refer to
I Replace combination switch (Refer to Section T)
1 OK
Check for battery voltage at terminal-wires (L/W) and (R)
of wiper relay connector with switch as shown NG
Replace wiper relay (Refer to Section T)
l Lo : (L/W) Ve l Hi : (R) Ve
OK
1 I
Disconnect wiper motor connector; check for battery
voltage at terminal-wires (L/W) and (R) with switch as
shown
l !-0 : (L/w) VB l Hi : (R) VB NG
= Repair harness (Wiper relay-Wiper motor)
OK
Check continuity between wiper motor body and
ground NG
= Repair ground circuit of wiper motor body
Check wiper motor (Refer to page S-70)
*: U.S. with/without cruise control, Canada with cruise control
23UOSX-017
Wiper does not operate in Lo or Hi position
(Without wiper relay)’
Check WIPER 20A fuse
OK
Repair harness and replace fuse .-
S-68 Cont’d

WINDSHIELD WIPER AND WASHER S
Cont’d
Turn ignition switch ON t
VB: Battery voltage
Check for battery voltage at terminal-wire (L) of wiper
switch connector
I Repair harness (Fuse box-Wiper switch)
1 OK
Check for battery voltage at terminal-wires (L/W) and
(L/R) of wiper switch connector with switch as shown
l Lo : (L/W) va l Hi : (R) VB
I OK NG
= Check wiper switch (Refer to page S-71)
Disconnect wiper motor connector; check for battery
voltage at terminal-wires (L/W) and (R)
l Lo : (L/W) VB l Hi : (R) Ve NG
- Repair harness (Wiper switch-Wiper motor) L
J
OK
I
Check continuity between wiper motor body and
ground Repair ground circuit of wiper motor body
*: Canada without cruise control Check wiper motor (Refer to page S-70)
23UOSX-018
II Wiper automatic park function does not work
II
I t-
I 1 Turn ignition switch ON I
I
+
Check for battery voltage at terminal-wire (L) of wiper
motor connector
OK Repair harness (Fuse box-wiper motor)
Disconnect wiper motor and wiper switch connectors;
check for continuity between terminal-wire (L/Y) of
above connectors
OK Repair harness (Wiper motor-Wiper switch)
Reconnect wiper switch connector;
check for continuity between terminal-wires (L/Y) and
(L/W) of wiper motor connector Check wiper switch (Refer to page S-71)
Check wiper motor (Refer to page S-70)
I
23UOSX-019
One touch function (MIST) does not operate
Jl
Check wiper switch (Refer to page S-71)
I
03UOSX-118
S-69

WINDSHIELD WIPER AND WASHER
Intermittent function does not operate
(With wiper relay)*
i
Disconnect wiper relay connector;
check for continuity of terminal-wire (B) to ground
I Repair harness (Wiper relay-Ground)
OK
=j Replace wiper relay (Refer to Section T)
*: U.S. with/without cruise control, Canada with cruise control
03uosx-119
Intermittent function does not operate
(Without wiper relay)*
1
Disconnect wiper switch connector;
check for continuity of terminal-wire (B) to ground Repair harness (Wiper switch-Ground)
*: Canada without cruise control
Washer does not operate (Wiper operates OK)
1
I
wiper 1 -
repay Check for battery voltage at terminal-wire
Repair harness (Fuse box-Wiper switch) l
1 (L) of wiper switch connector J
1 OK
Check for battery voltage at terminal-wire (L/O) of
washer switch connector with washer switch ON Check washer switch (Refer to page S-71)
1
1 OK
Disconnect washer motor connector;
check for battery voltage at terminal-wire (L/O) with
washer switch ON Repair harness (Washer switch-Washer motor)
Check for continuity of above connector terminal-wire
(B) to ground Repair harness (Washer motor-Ground)
*l: Canada without cruise control
*2: U.S. with/without cruise control, Canada with cruise control
23UOSX-020
WIPER MOTOR
Inspection
Conductivity check
1. Disconnect the wiper motor connector.
2. Check for continuity between terminals with an ohmmeter.
--iizzs
In automatic park
Out automatic park
o---O: Indicates continuity

BODY ELECTRICAL SYSTEM
INDEX .......................................... T- 2
RELAY ....................................... T- 2
INSTRUMENT CLUSTER AND
SWITCHES ................................ T- 3
EXTERIOR LIGHTS.. ..................... T- 4
INTERIOR LAMPS.. ...................... T- 5
CRUISE CONTROL SYSTEM.. ........ T- 6
AUDIO ....................................... T- 7
OTHER ...................................... T- 8
OUTLINE ...................................... T- 9
HOW TO USE THIS SECTION.. ...... T- 9
ELECTRICAL TROUBLESHOOTING
TOOLS .....................................
ELECTRICAL SYMBOLS - ............... T- 1x
TROUBLESHOOTING GUIDE.. .........
T- 11
FUSE AND JOINT BOX ..................
T- 12
STRUCTURAL VIEW.. ...................
T- 12
FUSES ....................................... T- 13
CIRCUIT BREAKER.. ....................
T- 14
JOINT BOX ................................. T- 15
RELAY .......................................... T- 16
STRUCTURAL VIEW.. ...................
T- 16
.-
FLASHER UNIT ........................... T- 17
DOOR LOCK TIMER UNIT ............
T- 17
HORN RELAY ............................. T- 18
HEADLIGHT RELAY.. ................... T- 18
TNS RELAY ................................ T- 18
DRL RELAY (CANADA). ................ T- 18
SWITCHES .................................... T- 19
STRUCTURAL VIEW.. ................... T- 19
SWITCH ..................................... T- 20
COMBINATION SWITCH ...............
T- 23
EXTERIOR LIGHTING SYSTEM ....... T- 29
STRUCTURAL VIEW.. ...................
T- 29
AIMING ...................................... T- 30
TROUBLESHOOTING.. .................
T- 30
HEADLIGHT AND FRONT
COMBINATION LIGHT.. ..............
T- 41
REAR COMBINATION LIGHT.. ....... T- 43
HIGH-MOUNT STOPLIGHT.. .......... T- 45
DRL RESISTOR ........................... T- 46
STOPLIGHT SWITCH.. .................. T- 47
BACK-UP LIGHT SWITCH ............. T- 47
LICENSE PLATE LIGHT.. ..............
T- 47
REAR SIDE MARKER LIGHT ......... T- 48
INTERIOR LAMP SYSTEM ..............
T- 49
STRUCTURAL VIEW.. ...................
T- 49
TROUBLESHOOTING ...................
T- 50 SPOT LAMP
(IN OVERHEAD CONSOLE) ......... T- 52
INTERIOR LAMP
(WITHOUT SUNROOF). ............... T- 52
INTERIOR LAMP (WITH SUNROOF) T- 53
INTERIOR AND SPOT LAMP
(WITHOUT SUNROOF). ............... T- 53
CARGO COMPARTMENT LAMP.. .. T- 54
TRUNK COMPARTMENT LAMP.. ... T- 54
COURTESY LAMP ....................... T- 54
CENTRAL PROCESSING UNIT (CPU) T- 55
SYSTEM DIAGRAM ...................... T- 55
CPU .......................................... T- 56
WARNING SYSTEM.. ...................... T- 58
WARNING BUZZER AND TIMER .... T- 58
WARNING AND INDICATOR LAMP T- 60
INSTRUMENT CLUSTER.. ............... T- 63
PREPARATION ............................ T- 63
STRUCTURAL VIEW ..................... T- 63
TROUBLESHOOTING ................... T- 64
INSTRUMENT CLUSTER
AND SPEEDOMETER CABLE.. .... T- 89
WATER THERMOSENSOR ............ T- 72
FUEL GAUGE SENDER UNIT.. ...... T- 73
REAR WINDOW DEFROSTER.. ........ T- 74
STRUCTURAL VIEW.. ................... T- 74
TROUBLESHOOTING ................... T- 75
FILAMENT .................................. T- 77
REAR WINDOW DEFROSTER
SWITCH .................................... T- 77
CRUISE CONTROL SYSTEM.. ......... T- 78
STRUCTURAL VIEW.. ................... T- 78
TROUBLESHOOTING GUIDE.. ....... T- 79
SELF-DIAGNOSTIC INSPECTION .... T- 80
TROUBLESHOOTING ................... T- 83
CRUISE CONTROL UNIT .............. T- 85
HORN ........................................... T- 88
HORN AND HORN RELAY.. .......... T- 88
AUDIO .......................................... T- 89
STRUCTURAL VIEW.. ................... T- 89
OUTLINE OF AUDIO.. .................. T- 90
SYSTEM ..................................... T- 91
TROUBLESHOOTING ................... T- 92
CAUSES OF NOISE ..................... T- 96
AUDIO COMPONENT.. ................. T- 98
DOOR SPEAKER .........................
REARSPEAKER .......................... ;-
- !3;
ANTENNA FEEDER ..................... T- 99
23UOTX-001

INDEX T
INSTRUMENT CLUSTER AND SWITCHES
23UOTX-00
1. Rear window defroster switch
7. Fuel gauge sender unit
Inspection
........................... page T-21 Removal / Installation ..................
page T-73
2. Remote control door mirror switch
Inspection ................................... page T-73
Inspection
........................... page T-20 8. Hazard warning switch
3. Ignition switch
Removal / installation .................. page T-20
Removal / Installation..
........ page T-20 Inspection ................................... page T-21
Inspection ........................... page
T-2 1 9. Cruise control main switch
4. Combination switch Inspection ...................................
page T-21
Removal / installation
.......... pages T-23, 25 10. Cruise control switch
Disassembly / Assembly ..... pages T-24, 26 Removal / Installation ..................
page T-20
Inspection
........................... pages T-27, 28 Inspection ................................... page T-21
5. Instrument cluster 11. Power window main switch
Troubleshooting..
................ page T-65 Inspection ................................... page T-22
Removal / Installation
.......... page T-69 12. Power window switch
Disassembly I Assembly ..... page T-70 Inspection ................................... page T-22
Inspection
........................... page T-71 13. Panel lamp control switch
6. Water thermosensor
Inspection ................................... page T-22
Removal / Installation..
........ page T-72
Inspection ........................... page T-72
T-3