turn signal MAZDA MX-5 1994 Owner's Manual

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

CRUISE CONTROL SYSTEM T Inspection Procedure Self-diagnosis 1. Connect a 1.4W test light between terminals D and F, of the cruise control unit connector. Note There is no wire in terminal D of the connector. Push the test light through the connector and touch the cor- responding pin on the control unit. 2. Turn the ignition switch to ON. 3. Turn the cruise control on by pressing the MAlN switch. The MAlN indicator light will come on. 4. Press and hold the RESUMEIACCEL switch for more than 3 seconds. The test light will illuminate for 3 se- conds and go out for 2 seconds. 5. The on-board diagnosis system is activated and the test light will flash if there is a problem. Refer to the chart be- low to obtain the problem code number. Note The cruise control system will not operate in self-diag- nosis mode. 6. After retrieving the code(s), drive the vehicle at more than 16 kmlh (10 MPH) or press the MAlN switch to deactivate self-diagnosis. The MAlN indicator light will go off. 7. Follow the action corresponding to the problem code. Service Code Table If there are two or more problems in the system, the problem with the highest priority will be indicated. Priority Pattern of output signal ON 2 OFF n 4 OFF ON 5 OFF I No. Code I Possible cause Defective wiring (Cruise actuator- Cruise control unit, Stoplight switch-Cruise control unit) 01 Defective actuator Defective stoplight switch (For O5 1 Defective wiring (Fuse - Cruise control unit) Both stoplight and brake switch (for 07 vehicle and cruise) are ON simulta- neously Defective SETICOAST, or RESUMEIACCEL switch l5 1 Defective cruise control unit Action Repair harness lnspect actuator (Refer to page T-107) Inspect brake switch (Refer to page T-105) Replace fuse Repair harness Inspect stoplight and brake switch (Refer to pages T-105 and T-56) Inspect cruise control switch (Refer to page T-106) Go to troubleshooting Gartner Banana

T 2 CRUISE CONTROL SYSTEM PRESS 45UOTX-209 Inspection Procedure Quick inspection 1. Connect a 1.4W test light between terminals D and F, of the cruise control unit connector. u Note There is no wire in terminal D of the connector. Push the test light through the connector and touch the cor- responding pin on the control unit. 2. Turn the ignition switch to ON. 3. Shift the selector lever to D or R range. 4. Verify that the MAlN switch is off. (The MAlN indicator light will be off .) 5. Turn the RESUMEIACCEL switch and the MAlN switch simultaneously to activate the system inspection. The MAlN indicator light will come on. 6. Operate each switch as described below and obtain the problem code numbers. Note The cruise control system will not operate in self-diag- nosis mode. 7. After retrieving the code(s), press the MAlN switch to deactivate the system inspection. The MAlN indicator light will go off. 8. Follow the action corresponding to the problem code. --, Service Code Table Press SETICOAST switch Procedure Press RESUMEIACCEL switch Pattern of output signal (Test light) ON OFF nn M nn Depress brake pedal ON OFF ON Drive vehicle above 40 km/h (25 MPH) Turn ignition switch to ON and shift the selector lever to P or N range (For AT) Depress clutch pedal (For MT) Code No. oN OFF Action lnspect cruise control switch (Refer to page T-106) lnspect cruise control switch (Refer to page T-106) lnspect stoplight switches (Refer to pages T-105 and T-56) lnspect parwneutral switch (Refer to section K) or clutch switch (Refer to page T-105) lnspect vehicle speed sensor or wire harness (Refer to page T-106) Gartner Banana

TROUBLESHOOTING u 7- Symptom: Magnetic clutch does not operate I Normal operation of magnetic clutch The PCME controls the operation of the condenser fan and magnetic clutch, depending on engine load. (Refer to section F.) The magnetic clutch is supplied with battery positive voltage as follows: 1. The ACS and fan switch are turned on. 2. The PCME receives a signal that the ACS and fan switch are on and creates a ground circuit. 3. The A/C relay is magnetized and the contact is closed. 4. Battery positive voltage is applied to the magnetic clutch and the clutch locks. WIPER 20A AD FAN 20A FUSE BLOCK MAIN FUSE BLOCK Step 1 1. Check the following fuses. I Fuse I Amperage I Location I I I . - I WIPER I 20A 1 In fuse block I I AD FAN I 20A 1 In main fuse block I 2. If the fuses are OK, go to Step 2. 3. If a fuse is burned, check for a short circuit in the harness before replacing it. Step 2 1. Run the engine at idle. 2. Turn on the ACS and fan switch. 3. Measure the voltage at the A terminal wire of the mag- netic clutch connector. B+: Battery positive voltage I Terminal I Voltage I Action 1 Step 3 1. Start the engine. 2. Turn on the fan switch and ACS. 3. Measure the voltage at terminal C and A of the A/C relay connector. B+: Batterv positive voltaae - -- A 1 Terminal I V0lta0e 1 Action I I C I Other I Repair wiring harness (AD FAN 20A fuse - AIC relay) I B+ Other I 1. -. B+ I GO to step 4 Replace magnetic clutch Go to Step 3 I A 1 Other I Repair wiring harness (WIPER 20A fuse - AIC relay) I Gartner Banana

TROUBLESHOOTING u Symptom: Condenser fan does not operate Normal operation of condenser fan The PCME controls the operation of the condenser fan and magnetic clutch, depending on engine load. (Refer to section F.) The condenser fan is supplied with battery positive voltage as follows: 1. The ACS and fan switch are turned on. 2. The PCME receives a signal that the ACS and fan switch are on and creates a ground circuit. 3. The A/C relay is magnetized and the contact is closed. 4. Battery positive voltage is applied to the condenser fan and the fan operates. Step 1 1. Turn the ignition switch to ON. 2. Measure the voltage at terminal A (B/Y) of the condenser fan connector. B+: Battery positive voltage Step 2 1. Disconnect the condenser fan connector. 2. Check for continuity between terminal B (B) of the con- denser fan connector and ground. Voltage B+ Other I GO to step 3 Action Go to Step 2 I continuity I Action I Step 3 1. Remove the condenser fan relay. 2. Apply battery positive voltage and check for continuity between the relay terminals. B+: Battery positive voltage Yes No Replace condenser fan Repair wiring harness (Condenser fan - GND) M: Continuity - - - 3. If correct, go to Step 4. 4. If not as specified, replace the condenser fan relay. 1 0 2 B+ Step 4 Check for continuity between terminal A (BN) of the con- denser fan connector and terminal C (BN) of the con- denser fan relay connector. I Continuity I Action 1 Repair wiring harness (Condenser fan relay - Fuse) B 0 GND I Repair wiring harness (Condenser fan - Condenser fan relay) I C 0 0 E 0 F 0 Gartner Banana

TECHNICAL DATA 1 Charge I 1.4 Belt 1.4 r. BODY ELECTRICAL SYSTEM 1 Air bag I 2 1 Retractor 1.4 Item Wattage (Bulb trade number) Hold Anti lock Wamlng and indicator lights 1.4 1.4 Washer Rear window defroster Beam Turn (LH and RH) Illumination Malfanction indicator Brake 1.4 1.4 I Exterior lights 3.4 3.4 3.4 x 4 1.4 1.4 Headlights Front turn signawparking lights Front side marker lights License plate lights Rear turn signal lights Rear side marker lights Stop/taillights Back-UP linhts High-mount stoplight I 18.4 (921) ACS 1 1.4 Hazard switch 1.4 60140 2718 (1 157 NA) 3.8 (1 94) 7.5 27 (1 1 56) 3.8 (1 94) 2718 {I 157) 27 (1 1561 Interior llahts - I lllumination lights I Cruise control main switch I 1.4 I 5 Ash tray U. HEATER AND AIR CONDITIONING SYSTEM I Item I Specit lcations I 3.4 Heater control switch ane el I 1.4 STANDARD BOLT AND NUT TIGHTENING TORQUE Refrigerant amount S (04 Compressor oil amount rnl {cc, fl oz) Refrigerant normal pressure MPa (kgflcm2, psi) 600 {2 1.21 130-1 70 {I 30-1 70,3.9-5.1) Low pressure: 0.154.25 (1 .5-2.5,21-361 Hiah Pressure: 1 37-1.57 (1 4--16, 199--228) Gartner Banana