1994 MAZDA MX-5 Workshop Manual

T LIGHTING SYSTEM FRONT TURN REAR TURN Step 9 1. Reconnect connector and turn the ignition switch to ON. 2. Set the turn signal switch to the right position and mea- sure voltage at terminal G(G/W) of the flasher unit con- -i nector. B+: Batterv ~ositive voltaae I Other I Replace flasher unit I Voltage 3. Set the turn signal switch to the left position and measure voltage at terminal D(G/B) of the flasher unit connector. Action B+: Battery positive voltage Alternates OV and B+ I Go to Step 10 I Voltage I Action I 1 Alternates OV and B+ 1 Go to Ste~ 10 1 I Other I Replace flasher unit I Step 10 1. Disconnect the turn signal light connectors. 2. Set the turn signal switch to the left or right position. 3. Measure the voltage at the terminals of the combination light connector. Light 1 Terminal I Voltage I I Alternates Front Alternates Front C (GIO) OV and B+ LH Alternates qyr I A (WB, I OV and B+ Ln I 1 Other - B+: Battery positive voltage Action I Go to Step 11 Go to Step 11 Go to Step 11 I Repair wiring harness (Flasher unit - Front combination liaht) Go to Step 11 I Repair wiring harness (Flasher unit - Rear combination light) 1. Turn the ignition switch to OFF. 2. Remove and check the bulbs. I Position I BUM I Action I Hazard warning 7 Hazard warning Bulb OK Burn OK Replace bulb Repair wiring harness (Front combination light - GND) Replace bulb Repair wiring harness (Rear combination light - GND) 4 Gartner Banana

LIGHTING SYSTEM T Symptom: Turn signals do not operate. (Hazard warning function operates normally.) J 45UOTX-I23 Step 1 Check the METER 15A fuse in the fuse block. Fuse 1 Action 1 I Burnt I Replace fuse after checking and repairing wirina harness I OK I GO to step 2 I Step 2 1. Turn the ignition switch to ON. 2. Measure voltage at terminal A(B/Y) of the combination switch connector. Other B+: Battery positive voltage Repair wiring harness (TURN fuse - Combination switch) Voltage B+ Step 3 Set the turn signal switch to ON (right or left) and mea- sure voltage at terminal C (GN) and terminal B(G/R) of the combination switch connector (&pin connector). Action Go to Step 3 B+: Battery positive voltage Terminal I Wire IVoltage 1 Action inspect combination switch (Refer to Daae T-20) Gartner Banana

T LIGHTING SYSTEM Step 4 1. Set the turn signal switch to the right position and mea- sure voltage at terminal F(GN) of the flasher unit con- nector. -/ B+: Battery positive voltage I Voltage I Action I 2. Set the turn signal switch to the left position and measure voltage at terminal E(G/R) of the flasher unit connector. B+ Other B+: Battery positive voltage I Voltage Action I Replace flasher unit Repair wiring harness (Combination switch - Flasher unit) B+ Other Replace flasher unit Repair wiring harness (Combination switch - Flasher unit) Gartner Banana

LIGHTING SYSTEM T L Symptom: Hazard warning function does not operate. (Turn signals function normally.) 05UOTX-310 Step 1 1. Remove the hazard warning switch. 2. Check for continuity between terminal H(B) of the hazard warning switch connector and ground. I Continuity I Action I I Yes I GO to step 2 1 I No Repair wiring harness (Hazard warning switch connector - GND) I Step 2 1. Check for continuity between terminals of the hazard warning switch. Switch - -- Terminal 2. If correct, reconnect connector and go to Step 3. 3. If not as specified, replace the hazard warning switch. G ON OFF H I No Repair wiring harness (Flasher unit - Hazard warnina switch) I 0---0: Continuity 0 Step 3 1. Disconnect the flasher unit connector. 2. Turn on the hazard warning switch. 3. Check for continuity between terminal C(0) of the flasher unit and ground. 0 Continuity Yes Action Re~lace flasher unit Gartner Banana

T LIGHTING SYSTEM Turn Signal and Hazard Warning Light Removal / Installation Remove and install as shown in the figure. 1 FLASHER UNIT Turn Signal Switch Inspection 1. Remove the knee protector. 2. Disconnect the combination switch connector. 3. Check for continuity between terminals of the switch. Terminal I Switch FU 1 TL I TR I I I I Left 0 -0 1 I Right 0 I I 0 M: Continuity 4. If not as specified, replace the combination switch as an assembly. Gartner Banana

LIGHTING SYSTEM T Hazard Warning Switch Inspection 1. Remove the hazard warning switch. 2. Check for continuity between terminals of the switch. I off 0---0 : Continuity Switch On 3. If not as specified, replace the hazard warning switch and retractor switch as an assembly. Flasher Unit Inspection 1. Turn the ignition switch to ON. 2. Operate the following switches and check the operation of the turn signal and hazard warning lights. Terminal Switch G 0 Turn signal switch H 0 Hazard warning switch Procedure Operation I --- -- - ON 1 All turn signal lights flash I Right side ON Left side ON 3. If not as specified, troubleshoot the circuit. Right turn signal lights flash Left turn signal lights flash I > L R ? TURN SIGNAL SWITCH HAZARD WARNING LIGHT LIGHT SW 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

LIGHTING SYSTEM T Troubleshooting Symptom: Back-up light(s) does not illuminate. 45UOTX-I 36 Step 1 1. Check METER 15A fuse. 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. Step 2 1. Check the back-up light bulbs. 2. If a bulb is burned, replace it. 3. If the bulbs are OK, go to Step 3. Step 3 1. Turn the ignition switch ON, and shift the transmission to reverse. 2. Measure the voltacle at the terminal wires of the rear combination light cknectors. B+: Battery positive voltage . light Action C Left B+ Other Right Check F terminal Go to Step 4 F C T-67 F '+ Other B+ Other Repair wiring harness (Rear combination light - GND) Check for poor connection of back- up light connector Check F terminal Go to Step 4 B+ Other Repair wiring harness (Refer combination light - GND) Check for poor connection of back- up light connector Gartner Banana