1994 MAZDA MX-5 SECTION T

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 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

:-2 .BACK-UP LIGHTS .HORN .STOPLIGHTS .HIGH-MOUNT STOPLIGHT MAIN FUSE BLOCK MAIN BUB TRAOE NUMBER ma-u~ LIGHTS: 11% (~WI Ix-oal OoA FUSE BLOCK \ ,, HIGH-HOUNT STOPLIGHT: 921 (l8.4W) STOP STRIGHTS: 1157 (27Wl PARK/NEUTRAL W/R (F) << IX-MI 15* FUSE BLOCK W/G IF) 0 F-O2k=zz& hORN RELAY F-03 G/O (F) STOR IGHT -5t SWITCH F-03 BACK-LP G/R LIGHT SWITCH OATA LINK PASSENGER-SIOE CONNECTOa (F) AIR BAG MOOWE (SECTION U! R/G (F) z:zzzz::zzzz:zz: G/R IF) F-0.551 HORN 0RIVE;I-SIOE AIR BAG MOOULE . E-19 E-20 A B B (R) (Rl A - VW REAR COnsINATION LIGHT F-05 HORN (F) F-06 PASSENGER-SIDE AIR BAG MXIULE(F) I U j-03 ORIVER-SIOE S-W PASSENGER-SIOE A:R BAG nrrmE (F) AIR BAG MX)UE (F) Gartner Banana

T LIGHTING SYSTEM Stoplight Switch Adjustment 1. Adjust the brake pedal height. (Refer to section P.) 2. Disconnect the stoplight switch connector. 4 3. Loosen the stoplight switch locknut. 4. Turn the stoplight switch until it contacts the pedal arm. Turn an additional 112 turn. 5. Tighten the locknut. Locknut tightening torque: 14-18 N.m (1.4-1.8 kgf-m, 120-156 in-lbf) I I I Brake pedal depress I 0 0 1 I Inspection Stoplight switch 1. Disconnect the stoplight switch connector. 2. Check for continuity between terminals of the switch. lnspection condition 3. If not as specified, replace the stoplight switch. Terminal A I B I Brake pedal released I m : Continuity Gartner Banana

RtAH TURN ANU HAZARO WARNING LIGHTS . .. . 1 156 (27W) . .. I I 6 tiAzAmJ B ' ORL CONTROL UNIT (F) (F) I (SECTICN E-2) I I I '-1 FLASHER WIT =TURN AND HAZARD WARNING LIGHTS G/B G/W G/B G/W B (A) (R) AZARO ARVING WITCH E-19 1 I HAZARO INSTRUclENT CLUSTER 0 (SECTION C-b) (:I Gartner Banana

MAIN FUSE @LOCK MAIN EUE TRADE NUMBER W (F) EACX-uP LIGHTS: 1156 (2%) Ix-oal FUSE BLOCK U ,, HIGH-MOUNT STOPLIGHT: Q1 (18.4W) STOP STCRIMTS: 1157 (27WI PARK/NEUTRAL W/R (F) - SWITCH OoA [X-031 Ix-olll 15A (SECTION H-1) FUSE ELDCK WG (F) 1 MTER 0 L (Fl HORN RELAY G/O (F) STOPLIGHT -12 SWITCH OWERTRAIN ONTROL ACK-UP G/R IGHT AT DATA LINK PASSENGER-SIDE CONNECTW RUISE CONTROL UNIT AIR BAG MOOVLE (SECTION U) m38 ::::s::t::z:::== R/G IF) t G/R G/O t I (F) (Fl G T I R/G G I I (R) (R) R/G G [R) (R) (R) 0, WW REAR COMBINATION LIGHT .BACK-UP LIGHTS .HORN .STOPLIGHTS 1 HIGH-MOUNT STOPLIGHT 1 :-06 PASSENGER-SIOE AIR 8AG HOOULE (F) U i-04 PASSENGER-SIDE AIR BAG MOWLE (F) Gartner Banana

FUSE BCOCK IX-031 I 1,05);;;! rAR WINOOW OEFROSTER 1-05 --: RELAY FUSE BLOCK 1-2 .CIGARETTE LIGHTER .INTERIOR LIGHT .REAR WINDOW DEFROSTER MAIN FUSE BLOCK FUSE BLOCK W/R (F) -- ;; ROOM L/R (FI IX-04 'OA &g [x-ZZI 1 - eh FUSE CONTROL MOOUCE (EWGINEI (SECTION 8- tc) INSTRVMENT CLUSTER (SECTION C-a) t OOW SWITCHES (SECTION T) INTERIOR LIGHT OFF. ON !;. (I1 OB CIGARETTE L .IGHTER (I) 1-09 INTERIOR LIGHT (11 I I Z-10 REAR WINOOW DEFROSTER SWITCH (I) I Gartner Banana

REAR WINDOW DEFROSTER T BATTERY POSITIVE VOLTAGE 45UOTX-18C -- FAULTY PORTION OV BATTERY POSITIVE VOLTAGE 45UOTX-18; Rear Window Defroster Switch (Refer to section U.) Rear Window Defroster Filament 1. Turn the rear window defroster switch ON. 2. Connect the (+) terminal of a voltmeter to the center of each filament and the (-) terminal to the body. The stan- dard voltage at the center of each filament is approx. 6V. If the meter indication is high, there is a short circuit be- tween the center and the grounded side of the filament. If the indication is low or zero, the fault is between the center and positive side. REPAIRING FILAMENT Caution Use only paint thinner or ethyl alcohol for clean- ing. Other solvents can damage the surrounding filament. 1. Use paint thinner or ethyl alcohol to clean the damage section of the filament. 2. Apply tape to both sides of the damaged section of fila- ment. 3. Using a small brush or marking pen, apply silver paint (part no. 2835 77 600) or equivalent to the damaged sec- tion. 4. Use a blow dryer heated to 60°C (140°F) for 30 minutes or let the paint set for 24 hours at 20°C (68°F) to let it dry completely. Do not use the rear window defroster until the paint is dry. Gartner Banana