MAZDA MX-5 1994 Workshop Manual

T RELAY REAR WINDOW DEFROSTER RELAY Inspection 1. Disconnect the relay. 2. Apply battery positive voltage and check for continuity between terminals of the relay. I 1 I I I 45UOTX419 I 2 0 0 B+ I GND I M: Continuity B+: Battery positive voltage Terminal 3. If not as specified, replace the relay. Step A 1 HEADLIGHT RELAY lnspection 1. Disconnect the relay. 2. Apply battery positive voltage and check for continuity between terminals of the relay. C 3. If not as specified, replace the relay. '. B+: Battery positive voltage Terminal B 0 Step 1 2 D 0 M : Continuity A 0 B+ B 0 GND C 0 D 0 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

T SWITCH IGNITION SWITCH Replacement 1. Disconnect the negative battery cable. 2. Remove the column covers. 3. Remove the screw and the ignition switch. 4. Install in the reverse order of removal. Inspection 1. Check for continuity between terminals of the switch. ACC 82 IG1 45UOTX-OX I Terminal 1 Position I B1 1 82 1 ACC I IG1 I IG2 I ST LOCK M: Continuity 2. If not as specified, replace the combination switch. Gartner Banana

SWITCH T COMBINATION SWITCH Removal 1 Installation 1. Disconnect the negative battery cable. - 2. Remove as shown in the figure. 3. Install in the reverse order of removal. Before installing the steering wheel, reset the clock spring connec- tor. COLUMN COVER TURN CLOCKWIS RETURN 2.75 TURNS - STEERING WHEEL / AIR BAG MODULE Clock spring connector adjustment 1. Set the front wheels straight ahead. 2. Turn the clock spring connector clockwise until it stops. Caution Do not force the front wheels straight ahead. 3. Return the connector 2.75 turns. 4. Align the marks on the clock spring connector and the outer housing. Gartner Banana

T SWITCH 1 FLASHER UNlT TR CRUISE CONTROL UNlT u Inspection 1. Disconnect the negative battery cable. 2. Remove the knee protector. 3. Disconnect the combination switch connector. i 4. Check for continuity between the terminals described by using an ohmmeter. 5. If the continuity is not as specified, replace the combina- tion switch as an assembly. Lights, dimmer, and passing switch Position Low beam Headlight High beam Passing Tail, Parking W: Continuity Turn signal switch Terminal E I HL I HU (TNSJHEADI BA I B I Switch m: Continuity Left Right Windshield wiper and washer switch O--O : Continuity d Terminal 0 0 Cruise control switch FU I TL TR 0 0 I Position SETICOAST RESUME/ACCEL Terminal SE I RE W: Continuity 0 E 0 0 0 ,i 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

INSTRUMENT CLUSTER CIRCUIT DIAGRAM -O? IhSTRLNNT CLUSTER (11 C-05 BRAKE FLUiO-LEVEL SENSOFI(F1 n L ,I n n IT I L ]L/v~~~~~ :& ~~~/*~*/BIc/LII R IL/v~*/B~ LG v ( I n /L(B/Y~ 3 ( R (wall + (t/~lfi/nl B (V#(r/fi(~/e (L 3. Id %I 7" 10 ?I 18 40 1C I@ I. -07 PAFLING BRAKE S!dIlCU(Il I I I I Gartner Banana

INSTRUMENT CLUSTER TROUBLESHOOTING Symptom: Speedometer does not operate or indication is incorrect. 05UOTX-278 ON TRANSMISSION ON INSTRUMENT CASE CLUSTER 9MUOTX467 Step 1 1. Verify that the speedometer cable is connected properly. 2. If the connections are OK, go to Step 2. Step 2 - Check speedometer cable 1. Disconnect the speedometer cable from the instrument cluster and transmission case. 2. Verify that the cable and gear spin easily when turned by hand. 3. If the cable or gear is stiff, replace as necessary. 4 4. If the speedometer cable and gear are OK, replace the speedometer. Gartner Banana

INSTRUMENT CLUSTER T L Symptom: Tachometer does not operate. 9MUOTX-069 Step 1 - Preparation 1. Remove the instrument cluster. (Refer to page T-29.) 2. Connect a test tachometer between terminals 1 H and 2J of the harness side connector. Step 2 1. Start the engine. 2. Check that the test tachometer indicates engine speed. Indicates rpm Yes No 7 Action Replace tachometer Repair wiring harness (Instrument cluster - laniter1 Gartner Banana