1994 MAZDA MX-5 brake

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

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

T WARNING LIGHT AND SENDER UNIT TROUBLESHOOTING Check the METER 15A fuse in the fuse box before troubleshooting. If it is burnt, replace it after checking and repairing the wiring harness. i/ Brake System Warning Light I Symptom: Brake system warning light remains illuminated. 45UOTX-063 Step 1 - Check brake fluid level Check brake fluid level. Below MIN I I Check brake system (Refer to section P) I Brake fluid level Action Step 2 - Check parking brake switch 1. Disconnect the parking brake switch connector. 2. Check for continuity between the terminal of the switch and ground. Above MIN Go to Step 2 3. If not as specified, adjust or replace the parking brake switch. (Refer to section P.) 4. If the switch is OK, go to Step 3. I Step 3 - Check brake fluid level sensor I 1. Check for continuity of the sensor. *. 1' Lever Pulled one notch Released Continuity Yes No - I Above MIN No Brake fluid level Below MIN 2. If not as specified, replace the level sensor. 3. If the sensor is OK, repair the wiring harness. Continuity Yes Gartner Banana

WARNING LIGHT AND SENDER UNIT T Symptom: Brake system warning light does not illuminate when parking brake is on. (Ignition switch to ON) 45UOTX-065 Remedy 1. Disconnect the parking brake switch connector. 2. Check for continuity between the terminal of the switch and ground. I Released 1 No I Lever 3. If not as specified, adjust or replace the parking brake switch. 4. If the switch is OK, repair the wiring harness. Continuity 010 OFF Indicator Light Symptom: O/D off indicator light does not illuminate when O/D off switch turned on. 45UOTX-069 Pulled one notch I Yes Symptom: Brake system warning light does not illuminate when brake fluid in reservoir tank is below MIN. 45UOTX-067 Remedy 1. Check the bulb of the O/D off indicator light. 2. If the bulb is burned out, replace it. u Remedy 1. Disconnect the brake fluid level sensor connector. 2. Check for continuity of the brake fluid level sensor. Brake fluid level Below MIN Above MIN Continuity Yes No 3. If not as specified, replace the level sensor. 4. If the sensor is OK, repair the wiring harness. Gartner Banana

WARNING LIGHT AND SENDER UNIT T OHMMETER Washer Level Indicator lnspection 1. Disconnect the connector from the washer level sensor. 2. Jump terminal-wire L (harness side) to a body ground. 3. Start the engine and check that the WASHER indicator illuminates. 4. If there is no illumination, check the bulb, wiring harness, and sensor. Replace or repair as necessary. Washer Level Sensor lnspection 1. Connect the sensor connector (sensor side) to an ohm- meter. 2. Move the sensor float up and down. 3. Verify that there is continuity when the float is at the low- est point. BRAKE FLUID LEVEL SENSOR lnspection 1. Check for continuity of the sensor. 2. If continuity is not as specified, replace the level sensor. Float level Below MIN Above MIN BUCKLE SWITCt Continuity Yes No OHMMETER -1 PARKING BRAKE SWITCH lnspection 1. Disconnect the parking brake switch connector. 2. Check for continuity between the switch connector and ground. I Lever I Continuity I 3. If continuity is not as specified, adjust or replace the parking brake switch. (Refer to section P.) Pulled one notch Released BUCKLE SWITCH lnspection 1. Disconnect the buckle switch connector 2. Check for continuity of the switch. Yes No Seat belt I Continuity Seat belt buckled Seat belt unbuckled No Yes 3. If continuity is not as specified, replace the buckle switch. Gartner Banana

T LIGHTING SYSTEM Troubleshooting Symptom: Stoplights do not illuminate (All). 45UOTX-105 '' HIGH-MOUNT STOPLIGHT 05UOTX-12: Step 1 1. Check STOP 15A fuse in the fuse box. 2. If the fuse is burned, replace it. Check and repair the wire harness, if necessary. 3. If the fuse is OK, go to Step 2. ~easure the voltage at the following terminal wires of the stoplight switch connector. B+: Battery positive voltage Inspection 1 ~erm w I voltage 1 condition Action I B+ I Check B terminal I Repair wiring harness Other I (STOP 15A fuse - Storrliaht switch) I Brake pedal B+ I Go to Step 3 depressed Other 1 Check stoplight switch w -- 1. 6heck the stoplight bulbs. 2. If a bulb is burned, replace it. 3. If the bulbs are OK, go to Step 4. Step 4 Measure the voltage at the following terminal wires of the right and left rear combination light connectors. B+: Batterv ~ositive voltacle -. - '"spection I Terminal I Voltage 1 condition Action Brake pedal depressed B+ Other B+ Other Check F terminal Repair wiring harness (Stoplight switch - Rear combina- tion light) Repair wiring harness (Rear combination light - GND) Check for poor connection of con- nectors Gartner Banana

LIGHTING SYSTEM T u I Symptom: Stoplights does not illuminate (One only). 45UOTX-108 STOPLIGHT 'I HIGH-MOUNT STOPLIGHT Removal / Installation - -- 1. stoplight, High-mount stoplight 2. Remove and install as shown in the figure. Step 1 1. Check the stoplight bulb of the faulty side. 2. If a bulb is burned, replace it. 3. If the bulb is OK, go to Step 2. Step 2 Measure the voltage at the following terminal wires of the faulty rear combination ligjht connector. B+: Battery ~ositive voltaae -. - I Inspection I TernM I Voltage I condition Action - STOPLIGHT (LH AND RH) HIGH-MOUNT STOPLIGHT Brake pedal depressed F B+ Other B+ Other Check F terminal Repair wiring harness (Stoplight switch - Rear mrnbina- tion light) Repair wiring harness (Rear combination light - GND) Check for poor connection of con- nectors Gartner Banana