ignition MAZDA MX-5 1994 Workshop Manual

P ANTILOCK BRAKE SYSTEM (ABS) TROUBLESHOOTING GUIDE Troubleshooting Guide with ABS Tester ABS tester ADAPTER PART No.0000-42-0010 HYDRAULIC UNIT CONNECTOR POSSlTlVE BATTERY 97UOPX469 Connecting ABS tester 1. Turn the ignition switch OFF. 2. Connect the SST harness to an extension harness, and wrap the connection with electrical tape to prevent short- ing. 3. Connect the SST between the hydraulic unit wiring har- ness connectors and to the positive battery terminal. 4. Roll back the carpet and remove the protecter. 5. Connect the ABS tester to the control unit connector at harness side .using the adaptor. Warning Driving the vehicle while the tester is connected to the ABS control unit is extremely dangerous. The brakes could fail, resulting in death or seri- / -1 ous injury. Disconnect the tester from the ABS control unit before driving the vehicle. Gartner Banana

P ANTILOCK BRAKE SYSTEM (ABS) Troubleshooting procedure 2. ALTEnuAtOR TEST START mtmE (ALTWJATOR TESTED BY RWNa ENQlNE) 3. A88 SYSTEM TEST TURN IGNITION K€Y ON (00 NOT ROES EWWE) - - 1. LOCATE ABS CONTROL UNIT. 2. DISCONNECT CONTROL UNlT HARNESS CONNECTOR FROM CONTROL UNIT. 3. CONNECT ABS TESTER HARNESS TO CONTROL UNlT HARNESS CON- NECTOR. 4. TURN IGNITION KEY TO ON POSITION. TESTER WlLL RAPIDLY DISPLAY SEVERAL MESSAGES DURING AN INITIAL SEGMENT CHECK I THEN 1 I MAZDA ABS 2 TEST 1 4 I YES ENG RUN? NO 1 I MAZDA ALT TEST I CHK ALTERNATOR NO FAULT DETECTED t I TURN OFF ENGINE I TESTER WlLL RAPIDLY DISPLAY SEVERAL MESSAGES DURING AN INITIAL SEGMENT CHECK. I THEN t 1 YES ENG RUN? NO t 1 MAZDA ABS 2 TEST I Gartner Banana

POWER WINDOW SYSTEM Power windows do not operate w Turn ignition switch ON B+: Battery positive voltage Check P.WINDOW (30A) fuse W Shon circuit Disconnect power window main switch connector, check Repair harness (Main switch--Ground) continuity of terminal-wire (B) to ground Check for B+ at terminal-wire (BNV) of power window main switch connector 1 Check power window switch (Refer to page S-22) 1 45UOSX-016 One power window does not operate w --c NG' I Turn ignition switch ON I Repair harness (Fuse box-Main switch) Check for B+ at terminal-wires of power window main Check power window switch (Refer to page S-22) switch connector Up : (GIR), ((RIB)) wire Down: (G), ((RIG)) wire I Repair harness (Main switch-Motor) connector Up : G/R) wire Down: [G) wire Check power window regulator (Refer to page S-22) (( )): Passenger side Gartner Banana

OUTSIDE MIRROR Power outside mirrors do not operate 1 B+: Battery positive voltage 1 u Check CIGAR 15A fuse Replace fuse after checking and repairing wiring harness I Turn ignition switch to ON I ,,.,,,,,,,,,.,,,,.,. switch connector Repair harness (Fuse box - Power outside mirror switch) 1 OK I I I RIGHT i i~&) wire Disconnect power outside mirror switch connector Check for continuity between terminal wire (0) and ground Fbpair harness (Power outside mirror switch -Ground) 1 Check power outside mirror switch (Refer to page S-33) Reconnect power outside mirror switch connector Check for B+ at terminal wires of power outside mirror I I Switch position I Terminal I Voltage I UP I (BRl wire 1 B+ switch connector with mirror switch in positions indicated below NG c OK Right Left Check for B+ at terminal wires py of power outside mirror con- nector with mirror switch in positions indicated below Check power outside mirror (Refer to page S-33) - DOWN LEFT RIGHT UP DOWN LEFT RIGHT OK > ,- , - (LGIB) wire (LG/B) wire (B R/B) wire (BR) wire (LGIB) wire (LGIB) wire (BRIB) wire - Repair harness (Power outside mirror switch - Power outside mirror) B+ B+ B+ B+ B+ B+ B+ Gartner Banana

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