1994 MAZDA MX-5 ignition

WINDSHIELD WIPER AND WASHER S WINDSHIELD WIPER AND WASHER TROUBLESHOOTING i/ Circuit Diagram WINDSHIELD WIPER & WASHER MAIN FUSE BLOCK MAIN BOA FUSE BLOCK // WIPER \ & 20A IGNITION SWITCH WINDSHIELD WIPER AND WASHER SWITCH i WIPER SWITCH --------------------- o -I MIST o OFF HIGH o o LOW INT I I I - MOTOR - I I I WINDSHIELO WIPER MOTOR ( ( I -01 WINDSHIELD WASHER MOTOR (F) IITHOUT ABS - ----- 'ITH ABS 1-02 WINDSHIELO WIPER MOTOR (F) 1-03 WINDSHIELD WTPER AND WASHER SWITCH(F) Gartner Banana

WINDSHIELD WIPER AND WASHER Wlper does not operate in Lo or Hi position 1 B+: Battery positive voltage - Check WIPER 20 A fuse Short circuit Turn ignition switch ON I OK 1 I Checkfor B+ at terminal-wire windphieldwiper.witchu Repair harness (Fuse box - Switch) 1 I connector I I I OK Check for B+ at terminal-wires (UR) and (VW) of switch connector with switch, as shown Lo : VW) B+ Hi : [uR) s+ Check windshield wiper switch (Refer to Section T) I 1 OK Check for continuity of motor terminal-wire (B) to ground Repair brush plate holder (Refer to page S-43) 1 Check for B+ at terminal-wi-(VR) Repair (UW) or (UR) wire harness 1 Check wiper motor (Refer to page 538) motor connector with switch, as shown Lo: VW) B+ Hi : [UR) B+ Wiper automatic park function does not work 1 (Switch-Wiper motor) Turn ignition switch ON t Repair harness (Fuse box - Wiper motor) Check wiper motor (Refer to page S-38) Gartner Banana

WINDSHIELD WIPER AND WASHER Intermittent function does not operate L I B+: Battery positive voltage Check for continuity of m Repair brush plate holder (Refer to page S-43) Oy Check windshield wiper switch (Refer to Section T) 45UOSX-036 Wiper continues to operate when switch is OFF Check windshield wiper switch (Refer to Section T) One-touch function does not operate Check windshield wiper switch (Refer to Section T) Washer does not operate (Wiper operates OK) L O5uoSX-050 Washer continues to operate when switch is OFF 1 Turn ignition switch ON Check windshield washer switch (Refer to Section T) Check for B+ at terminal-wire (UO) of windshield washer Check windshield washer switch (Refer to Section T) switch connector with washer switch ON I o5UosX-052 Check for B+ at terminal-wire (UO) of washer motor con- Repair harness (Switch - Motor) nector with washer switch ON I OK I I NGr I I Disconnect washer motor 2-pin connector; check for conti- Repair harness (Motor - Ground) nuity of terminal-wire (B) to ground Check washer motor (Refer to page S-38) 45UOSX-037 Gartner Banana

BODY ELECTRICAL SYSTEM ................................... INDEX T- 2 ........................... SWITCHES T- 2 FUSES AND RELAYS .................. T- 3 .............................. LIGHTS T- 4 CRUISE CONTROL SYSTEM ........... T- 5 ...................... AUDIO SYSTEM T- 6 SRS AIR BAG SYSTEM ................ T- 7 ............................... OUTLINE T- 8 TROUBLESHOOTING GUIDE ........... T- 8 ELECTRICAL SYMBOLS ............... T- 9 ................................... FUSE T- 10 STRUCTURAL VIEW ................... T- 10 ...................... SPECIFICATIONS T- 11 ........................ DESCRIPTION T- 12 ....................... REPLACEMENT T- 12 ....................... RELAY .. ....... T- 13 STRUCTURAL VIEW ................... T- 13 ........................ DESCRIPTION T- 13 RETRACTABLE HEADLIGHT RELAY .... T- 14 ....................... FLASHER UNIT T- 14 ........................... TNS RELAY T- 15 .......................... HORN RELAY T- 15 COOLANT FAN RELAY ................. T- 15 REAR WINDOW DEFROSTER RELAY ... T- 16 HEADLIGHT RELAY ................... T- 16 ................................ SWITCH T- 17 ................... STRUCTURAL VIEW T- 17 ........................ DESCRIPTION T- 17 .................... IGNITION SWITCH T- 18 COMBINATION SWITCH ............... T- 19 RETRACTOR SWITCH AND HAZARD WARNING ............................. SWITCH T- 21 ................. INSTRUMENT CLUSTER T- 22 ................... STRUCTURAL VIEW T- 22 ........................ DESCRIPTION T- 22 .................... CIRCUIT DIAGRAM T- 23 ................. TROUBLESHOOTING T- 24 ............ REMOVAL / INSTALLATION T- 29 ........... DISASSEMBLY 1 ASSEMBLY T- 29 ...................... SPEEDOMETER T- 30 ........................ TACHOMETER T- 30 WATER TEMPERATURE GAUGE ....... T- 30 ......................... FUEL GAUGE T- 31 OIL PRESSURE GAUGE ............... T- 31 .................... PRINTED CIRCUIT T- 32 VEHICLE SPEED SENSOR ............. T- 32 WATER TEMPERATURE SENDER UNlT . T- 32 FUEL GAUGE SENDER UNlT ...................... (IN FUEL TANK) T- 32 OIL PRESSURE SENSOR .............. T- 33 ............... SPEEDOMETER CABLE T- 33 WARNING LIGHT AND SENDER UNIT ..... T- 34 ................... STRUCTURAL VIEW T- 34 CIRCUIT DIAGRAM .................... T- 35 ................. TROUBLESHOOTING T- 36 BRAKE FLUID LEVEL SENSOR ......... T- 39 PARKING BRAKE SWITCH ............. T- 39 ..................... BUCKLE SWITCH T- 39 ...................... LIGHTING SYSTEM T- 40 ................... STRUCTURAL VIEW T- 40 ......................... HEADLIGHTS T- 41 ......................... STOPLIGHTS T- 53 TURN AND HAZARD WARNING LIGHTS . T- 57 ..................... BACK-UP LIGHTS T- 66 TAILLIGHTS. SIDE MARKER LIGHTS. PARKING LIGHTS AND LICENSE PLATE LIGHTS . T- 69 DAYTIME RUNNING LIGHTS (DRL) .................... (CANADA SPEC.) T- 72 ........... REAR COMBINATION LIGHT T- 76 .................... INTERIOR LIGHTS T- 78 ................ ILLUMINATION LIGHTS T- 82 .................................. HORN T- 84 ................... STRUCTURAL VIEW T- 84 .................... CIRCUIT DIAGRAM T- 85 ................. TROUBLESHOOTING T- 86 ............ REMOVAL 1 INSTALLATION T- 87 ............ REAR WINDOW DEFROSTER T- 89 ................... STRUCTURAL VIEW T- 89 ........................ DESCRIPTION T- 89 ................. TROUBLESHOOTING T- 90 ................ REPAIRING FILAMENT T- 93 ............. CRUISE CONTROL SYSTEM T- 94 ................... STRUCTURAL VIEW T- 94 .................... CIRCUIT DIAGRAM T- 95 ................. TROUBLESHOOTING T- 96 ....... SELF-DIAGNOSTIC INSPECTION T-100 ............... CRUISE CONTROL UNIT T-103 .................... ACTUATOR CABLE T-104 ..................... CLUTCH SWITCH T-105 .......... STOP LIGHTIBRAKE SWITCH T-105 ...... CRUISE CONTROL MAIN SWITCH T-106 ........... CRUISE CONTROL SWITCH T-106 ............. VEHICLE SPEED SENSOR T-106 ........................... ACTUATOR T-107 a .................................. AUDIO T-108 ................... STRUCTURAL VIEW T-108 ................... SYSTEM DIAGRAM T-109 ............................ FEATURES T-110 FUNCTION AND OPERATING ......................... PROCEDURE 1-111 ............. OPERATION DESCRIPTION T-113 .................. ANTITHEFT SYSTEM T-120 ................. TROUBLESHOOTING T-122 ............ REMOVAL I INSTALLATION T-145 .................... POWER ANTENNA T-149 ......................... INSPECTION T-153 CONNECTOR TERMINAL .................... SPECIFICATIONS T-154 SRS AIR BAG SYSTEM .................. T-156 PREPARATION ........................ T-156 ................... STRUCTURAL VIEW T-156 .......... COMPONENT DESCRIPTION T-157 SYSTEM DIAGRAM ................... T-158 ................. SERVICE WARNINGS T-159 GENERAL PROCEDURES ............. T-160 TROUBLESHOOTING ................. T-160 DRIVER-SIDE AIR BAG MODULE ....... T-206 PASSENGER-SIDE AIR BAG MODULE . . T-207 DIAGNOSTIC MODULE ................ T-208 CLOCK SPRING ....................... T-209 CRASH SENSOR (D-SENSOR) ......... T-210 CRASH SENSOR (S-SENSOR) ......... T-213 AIR BAG MODULE DISPOSAL . .. PROCEDURE ........................ T-215 INSPECTION OF SST (DEPLOYMENT TOOL) ............... T-217 Gartner Banana

T INDEX INDEX SWITCHES 1. Ignition switch 8. Brake switch Inspection ................ page T- 18 Removal / Installation ...... page T-105 Replacement ............. page T- 18 Inspection ................ page T-105 2. Combination switch adjustment ............... page T-105 Removal / Installation ...... page T- 19 9. Back-up light switch Inspection ................ page T- 20 Inspection ................ page T- 68 3. Retractor switch 10. Door switch Removal / Installation ...... page T- 21 Inspection ................ page T- 81 Inspection ................ page T- 21 11. Interior light switch 4. Hazard warning switch Troubleshooting ........... page T- 79 Removal / Installation ...... page T- 21 12. Panel light control switch Inspection ................ page T- 21 Inspection ................ page T- 83 5. Parking brake switch 13. Horn switch Inspection ................ page T- 39 Removal / Installation ...... page T- 88 6. Buckle switch 14. Clutch switch Inspection ................ page T- 39 Removal / Installation ...... page T-105 7. Stoplight switch Inspection ................ page T-105 -/ Adjustment ............... page T- 56 Adjustment ............... page T-105 Inspection ................ page T- 56 15. Rear window defroster switch Removal 1 Installation ......... section U T-2 Gartner Banana

T OUTLINE OUTLINE TROUBLESHOOTING GUIDE Symptom a Speedometer does not operate or indication is incorrect a Tachometer does not operate Water temperature gauge does not operate Fuel gauge does not operate a Oil pressure gauge does not operate a Brake system warning light remains illuminated Brake system warning light does not illuminate when parking brake on a Brake system warning light does not illuminate when brake fluid in reservoir is below MIN a OID off indicator light does not illuminate when OID off switch turned on Seat belt warning light remains on six seconds after ignition switch is turned on (Timer function does not operate) Seat belt warning light does not illuminate when ignition switch is first turned on a Headlights do not illuminate Headlight does not illuminate (Right or left) Retractable headlight actuator do not operate (Both sides) Retractable headlight actuator does not operate (One side) Stoplights do not illuminate (All) Stoplight does not illuminate (One only) Turn and hazard warning functions do not operate Turn signals not operate (Hazard warning function operates normally) Hazard warning function does not operate (Turn signals function normally) Back-up lights does not illuminate Taillights, side marker lights, and license plate lights do not illuminate Daytime running lights do not illuminate Daytime running light function does not cancel lnterior lights do not illuminate Interior liahts remains illuminated (Control switch: DOOR ~osition) Horn does not sound Vehicle speed cannot be set (Cruise control unit will not hold vehicle speed) Speakers do not operate (Without headrest speakers) Speakers do not operate (With headrest speakers) Poor sound quality or noise (Radio) Poor sound quality (Cassette tape player) Cassette tape will not load Cassette tape will not play Compact disc will not load Compact disc skips No sound can be heard Some speakers do not operate Bodysonic will not play Service code table (With passenger-side air bag) Service code table (With out ~assenaer-side air baa) Reference page T-24 T-25 T-26 T-27 T-28 T-36 T-37 T-37 Gartner Banana

RELAY T RELAY STRUCTURAL VIEW 1. Headlight relay 2. TNS relay 3. Retractable headlight relay 4. EGI main relay 5. Circuit-opening relay 6. Rear window defroster timer unit 7. Coolant fan relay 8. Horn relay 9. Flasher unit 10. Rear window defroster relay DESCRIPTION The DRL control unit (Canada only) controls the operation of the turn signal lights. When the ignition switch is at ON or START, the front turn signal lights illuminate as running lights, except when one of the following switches is on: Headlight switch. Turn signal light switch. Hazard warning switch. Parking brake switch. Gartner Banana

SWITCH T SWITCH STRUCTURAL VIEW 1. Ignition switch 2. Combination switch 3. Retractor switch 4. Hazard warning switch DESCRIPTION Combination Switch The combination switch is includes a clock spring type electrical connector for supplying electrical cur- rent to the air bag module and horn switches. When installing the combination switch, make sure the clock spring connector is properly aligned. If it is not, it may be broken or the steering wheel may not turn fully. (Refer to page T-19.) 45UOTX-022 Gartner Banana