1994 MAZDA MX-5 warning

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

RELAY TIMER a 45UOTX-01 FLASHER UNIT Inspection 1. Turn the ianition switch to ON. RETRACTABLE HEADLIGHT RELAY Inspection 1. Disconnect the relay. 2. Apply battery positive voltage and check for continuity .- between terminals of the relay. B+: Batterv ~ositive voltaae Step -- -- M: Continuity Terminal A I H I G I B I D 1 2 3. If not as specified, replace the relay. 2. Operate the following switches and check the operation of the turn signal and hazard warning lights. 0 0 3. If not as specified, troubleshoot the circuit., 0 Switch Turn signal switch Hazard warning switch HAZARD WARNING SW - - 0 Procedure Right side ON Left side ON ON 0 B+ Operation Right turn signal lights flash Left turn signal lights flash All turn signal lights flash 0 GND V 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

SWITCH T RETRACTOR SWITCH AND HAZARD WARNING SWITCH Removal l Installation Remove and install as shown in the figure. RETRACTOR SWITCH AND HAZARD WARNING SWITCH ASSEMBLY Inspection Retractor switch 1. Remove the retractor switch. 2. Check for continuity between terminals of the switch. Switch 3. If not as specified, replace the retractor switch and haz- ard warning switch as an assembly. 7 OFF ON Hazard warning switch 1. Remove the hazard warning switch. 2. Check for continuity between terminals of the switch. Terminal Switch B m: Continuity 0 D I F 0 Terminal - -- - M : Continuity 0 0 , G OFF ON 3. If not as specified, replace the retractor switch and haz- ard warning switch as an assembly. H 0 0 Gartner Banana

T INSTRUMENT CLUSTER INSTRUMENT CLUSTER STRUCTURAL VIEW 1. Speedometer 2. Tachometer 3. Water temperature gauge 4. Fuel gauge 5. Oil pressure gauge 6. Warning and indicator lights 7. Trip meter 8. Odometer DESCRIPTION Speedometer Two scales are shown on the speedometer face. The main scale for U.S. specification vehicles is MPH (0-140 MPH); the main scale for Canada specification vehicles is kmlh (0-220 kmlh). The odometer indication is the same as the main scale. Tachometer The tachometer has a RED STRIPED ZONE (6,500-7,000 rpm) that indicates momentary allowable engine speed. The engine should not be operated in the RED ZONE (7,000-8,000 rpm). Fuel Gauge 2 The fuel gauge continues to indicate the amount of fuel remaining in the fuel tank after the ignition switch has been turned OFF. Gartner Banana

T WARNING LIGHT AND SENDER UNIT WARNING LIGHT AND SENDER UNlT STRUCTURAL VIEW 1. Brake system warning light 2. Seat belt warning light 3. Air bag system warning light 4. Retractor indicator light 5. Alternator warning light 6. MIL (malfunction indicator light) 7. O/D OFF indicator light 8. Antilock brake system warning light 9. Washer level indicator light 10. Rear window defroster indicator light Reference Table Warning indicator light SRS air bag system Retractor indicator light Alternator MIL (malfunction indicator light) O/D OFF Antilock brake system Washer level 45UOTX-062 T-34 Reference page or section T-154 T- 48 section G section F section K section P T- 39 J Gartner Banana

WARNING LIGHT AND SENDER UNIT T CIRCUIT DIAGRAM :-a m INSTRUMENT CLUSTER MLiN FUSS LICCd I n L IL/V~~J~,IB/M~W/BIG/LII R IL/V~Y/B[LG ( Y BILIB/Y~ 3 1 R I~/all r IG/R~R/w] B ~G/U~Y/G~G/B 1~ li IJ 91 n 10 w IE to 1~ 11 16 XL ar 11 b 30s a WXidZ.<, A, :-07 PLUlffi BRAKE SUlTCH 11) Gartner Banana