warning lights MAZDA MX-5 1994 User Guide

LIGHTING SYSTEM T Symptom: Daytime running lights (DRL) do not illuminate. (Turn signals function normally.) DRL operate with engine running and following switches are off: Headlight switch Turn signal switch (Selected turn signal light flashes, other light remains illumi- nated) Hazard warning switch Parking brake switch (Parking brake released) Step 1 1. Position the vehicle on a flat surface and block the wheels to prevent vehicle movement. 2. Turn the ignition switch to ON. 3. Measure the voltage at the following terminal wires of the DRL control unit. 4. If correct, replace the DRL control unit. B+: Battery positive voltage Step 2 1. Disconnect the parking brake switch connector. 2. Check for continuity between the terminal of the switch and a body ground. Terminal J (L) u Connected to WIPER 20A fuse I(B) B (R) C (WIR) Parking brake lever Pulled one notch Continuity Yes Released Test condition Constant GND Parking brake switch Headlight switch No I 3. If not as specified, adjust or replace the parking brake switch. 4. If correct, repair wiring harness. (DRL control unit - Parking brake switch) Specification B+ Constant Parking brake released Headlight switch off Action Repair wiring harness (WIPER 20A - DRL control unit) Other B+ Other Repair wiring harness (DRL control unit - GND) Go to Step 2 Go to Step 3 Gartner Banana

T LIGHTING SYSTEM Step 3 1. Remove the column cover and disconnect the connec- tors of the headlight switch. 2. Check for continuity between the terminals of the head- Q light switch connector. Position I Terminal I I I I Headlight High beam I I 3. If not as specified, replace the combination switch. 4. If correct, repair wiring harness. (Headlight switch - DRL control unit) I Symptom: Daytime running lights (DRL) function does not cancel. OSUOTX-161 Headlight Low beam Step 1 1. Turn the ignition switch ON. 2. Verify the symptom by operating the following switches; the DRL should cancel. Go to the specified Step. Headlight switch. Hazard warning switch. Turn signal switch. Parking brake switch (lever pulled one notch). 0 1 0 0---0 : Continuity Symptom: DRL function not canceled when Headlight switch ON I Parking brake switch ON Step 5 I 05UOTX-163 Next Step Step 2 Hazard warning switch ON Turn signal switch ON Step 4 Step 4 4. If not as specified, go to Step 3. 5. If correct, replace the DRL control unit. Step 2 1. Turn on the ignition switch. 2. Turn on the headlight switch. 3. Check the voltage at the terminal wire C (WIR) of the DRL control unit connector. B+: Battery positive voltage J Terminal Voltage C (WIR) B+ Gartner Banana

T LIGHTING SYSTEM r REAR COMBINATION LIGHT Disassembly 1. Use a hot air blower to soften the "hot melt" (bonding Turn signal switch (in combination switch) Front turn signal lights agent) around the lens. Step 6 1. Disconnect the parking brake switch connector. 2. Check for continuity between the terminal of the switch and ground. u T-19 T-64 2. Remove the lens from the light rear of the lens with a hammer I Parking brake lever Pulled one notch Released 45U0TX-153 4. If correct, repair wirring harness. (Parking brake switch - DRL control unit) Removal 1 Installation Refer to the following pages: housing by pushing the handle or round bar. Continuity Yes No Item Headlight switch (in combination switch) Hazard warning switch 3. Remove the old hot melt from the light housing. 3. If not as specified, adjust or replace the parking brake switch. Reference page T-19 T-21 Gartner Banana

nia (i' [-I PACL LIGHT '-6 1.4k HEATER CDNTRCL CONTROL X3 SWITCH SWITCH ILLMI1UATIONS 1 -a? .ILLUMINATION LIGHTS WARNING I CRUISE CCNTQOL ILLVMINATION -0l PANEL LIGHT CONTROL SWITCH (I1 I 1-02 HEATER CONTROL SWITCH ILLGMINA~IONS (11 11-03 ASHTRAY ILLUMINATION (I) H-06 AT SELECT ILLUMINATION(II I -07 HAZARD WAWING AND RETRACTOFi SWITCH ILLUMINATION(II I-oz CRUISE CONTROL MAIN snITcn ILLWINATION (11 E-10 FRONT FOG LIGHT ANO REAR WIMOW DEFROSTER SUITCH ILLUMINATION (I) I Gartner Banana