fuse MAZDA MX-5 1994 User Guide

ANTILOCK BRAKE SYSTEM (ABS) P Inspection of ABS system Check system ground Caution To prevent damage to the terminals, create a probe by wrapping a thin wire around the tester lead before inserting. Check for an open circuit in (B) wire from terminals 1 Dl 1 S, and 2F of the control unit connector and ground. Check antilock warning light 1. Remove the instrument cluster. 2. Connect 12V to terminal 2K (C-Ol), and ground to termi- nal 1 K ((2-01). 3. Verify that the ABS warning light illuminates. 4. If there is no illumination, check the meter fuse, bulb, and wiring harness. 5. If OK, check the wiring harness (Warning light - Control unit - Hydraulic unit) and repair or replace as necessary. Check ABS diode 1. Check the meter fuse, bulb, and wiring harness. 2. Check the wiring harness (Warning light - Control unit - Hydraulic unit). 3. Disconnect the hydraulic unit 12-pin connector. 4. Using an ohmmeter, check for continuity of the terminals. 5. If continuity is not as specified, replace the hydraulic unit. Check front and rear valves 1. Disconnect the hydraulic unit 12-pin connector. 2. Using an ohmmeter, check for resistance of the termi- nals. -- 3. If resistance is not as specified, replace the hydraulic unit. 4. If resistance is as spe'cified, check the wiring harness (Hydraulic unit - ABS control unit). E (YIG) - H (B) (Rear Valve) C (BR) - H (B) (Right Front Valve) A (B/W) - H (B) (Left Front Valve) Check brake light switch 1. Disconnect the brake light switch connector. 2. Check for continuity between the terminals of the switch. Resistance (n) Approx. 1 .O-1.2 Approx. 1.0-1.2 Approx. 1 .+I .2 M : Indicates continuity Depressed brake pedal 3. If the continuity is not as specified, check the STOP fuse and wiring harness (Brake light switch - Control unit). 0 I 0 Released brake pedal Gartner Banana

P ANTILOCK BRAKE SYSTEM (ABS) MOTOR RELAY I I VALVE RELAY / I Check motor relay 1. Disconnect the negative battery cable. 2. Remove the motor relay. 3. Connect an ohmmeter and check for continuity at the .,i relay terminals. 4. If continuity is not as specified, replace the motor relay. 5. If OK, check the wiring harness (Motor relay - Control unit main fuse [ABS 60A1). Check pump motor Disconnect the control unit 2-pin connector and check for continuity between terminal a (FIN) wire and ground. If there is no continuity, replace the hydraulic unit. d 0 Check valve relay 1. Disconnect the negative battery cable. 2. Release the valve relay locks from the hydraulic unit and remove the valve relay. 3. Using an ohmmeter, check continuity of the relay termi- nals. M: Indicates continuity Connect to a 0 12V - c I b d 0 I I C++3: lndicates continuity Ground - b 4. If continuity is not as specified, replace the valve relay. b 0 e Connect to 12V I Ground c 0 a b c d Gartner Banana

P ANTILOCK BRAKE SYSTEM (ABS) RELAYS Removal 1 Inspection / Installation 1. Disconnect the negative battery cable. 2. Remove in the order shown. 3. Inspect all parts and replace as necessary. 4. Install in the reverse order of removal. 1. Cover 3. Valve relay 2. Motor relay Inspection ................... page P-57 Inspection ....................... below lnspection Motor relay 1. Disconnect the negative battery cable. 2. Release the motor relay lock from the hydraulic unit and remove the motor relay. 3. Connect an ohmmeter and check for continuity at the relay terminals. Ground M: Indicates continuity 4. If continuity is not as specified, replace the motor relay. 5. If OK, check the wiring harness (Motor relay - Control unit main fuse [ABS 60A1). Gartner Banana

POWER WINDOW SYSTEM TROUBLESHOOTING Circuit Diagram MAIN FUSE BLOCK e (EI /I \ IX-021 OFF SWITCH FUSE BLOCK K POWER WINDOW SWITCH CLOSE OPEN POWER WINDOWS POWER WINOOW REGULATORS l., -03 POWER WINDOW REGULATOR RH(OR2) -01 POWER WINDOW SWITCH(1) K-02 POWER WiNCOW REGULATO2 LH (ORI) Gartner Banana

POWER WINDOW SYSTEM Power windows do not operate w Turn ignition switch ON B+: Battery positive voltage Check P.WINDOW (30A) fuse W Shon circuit Disconnect power window main switch connector, check Repair harness (Main switch--Ground) continuity of terminal-wire (B) to ground Check for B+ at terminal-wire (BNV) of power window main switch connector 1 Check power window switch (Refer to page S-22) 1 45UOSX-016 One power window does not operate w --c NG' I Turn ignition switch ON I Repair harness (Fuse box-Main switch) Check for B+ at terminal-wires of power window main Check power window switch (Refer to page S-22) switch connector Up : (GIR), ((RIB)) wire Down: (G), ((RIG)) wire I Repair harness (Main switch-Motor) connector Up : G/R) wire Down: [G) wire Check power window regulator (Refer to page S-22) (( )): Passenger side Gartner Banana

OUTSIDE MIRROR Power outside mirrors do not operate 1 B+: Battery positive voltage 1 u Check CIGAR 15A fuse Replace fuse after checking and repairing wiring harness I Turn ignition switch to ON I ,,.,,,,,,,,,.,,,,.,. switch connector Repair harness (Fuse box - Power outside mirror switch) 1 OK I I I RIGHT i i~&) wire Disconnect power outside mirror switch connector Check for continuity between terminal wire (0) and ground Fbpair harness (Power outside mirror switch -Ground) 1 Check power outside mirror switch (Refer to page S-33) Reconnect power outside mirror switch connector Check for B+ at terminal wires of power outside mirror I I Switch position I Terminal I Voltage I UP I (BRl wire 1 B+ switch connector with mirror switch in positions indicated below NG c OK Right Left Check for B+ at terminal wires py of power outside mirror con- nector with mirror switch in positions indicated below Check power outside mirror (Refer to page S-33) - DOWN LEFT RIGHT UP DOWN LEFT RIGHT OK > ,- , - (LGIB) wire (LG/B) wire (B R/B) wire (BR) wire (LGIB) wire (LGIB) wire (BRIB) wire - Repair harness (Power outside mirror switch - Power outside mirror) B+ B+ B+ B+ B+ B+ B+ Gartner Banana

WINDSHIELD WIPER AND WASHER S WINDSHIELD WIPER AND WASHER TROUBLESHOOTING i/ Circuit Diagram WINDSHIELD WIPER & WASHER MAIN FUSE BLOCK MAIN BOA FUSE BLOCK // WIPER \ & 20A IGNITION SWITCH WINDSHIELD WIPER AND WASHER SWITCH i WIPER SWITCH --------------------- o -I MIST o OFF HIGH o o LOW INT I I I - MOTOR - I I I WINDSHIELO WIPER MOTOR ( ( I -01 WINDSHIELD WASHER MOTOR (F) IITHOUT ABS - ----- 'ITH ABS 1-02 WINDSHIELO WIPER MOTOR (F) 1-03 WINDSHIELD WTPER AND WASHER SWITCH(F) Gartner Banana

WINDSHIELD WIPER AND WASHER Wlper does not operate in Lo or Hi position 1 B+: Battery positive voltage - Check WIPER 20 A fuse Short circuit Turn ignition switch ON I OK 1 I Checkfor B+ at terminal-wire windphieldwiper.witchu Repair harness (Fuse box - Switch) 1 I connector I I I OK Check for B+ at terminal-wires (UR) and (VW) of switch connector with switch, as shown Lo : VW) B+ Hi : [uR) s+ Check windshield wiper switch (Refer to Section T) I 1 OK Check for continuity of motor terminal-wire (B) to ground Repair brush plate holder (Refer to page S-43) 1 Check for B+ at terminal-wi-(VR) Repair (UW) or (UR) wire harness 1 Check wiper motor (Refer to page 538) motor connector with switch, as shown Lo: VW) B+ Hi : [UR) B+ Wiper automatic park function does not work 1 (Switch-Wiper motor) Turn ignition switch ON t Repair harness (Fuse box - Wiper motor) Check wiper motor (Refer to page S-38) Gartner Banana

WINDSHIELD WIPER AND WASHER s COMPONENTS Removal l lnstallation u 1. Disconnect the negative battery cable. 2. Remove in the order shown in the figure. 3. Install in the reverse order of removal, referring to Installation Note. WITHOUT ABS 1. Wiper arm and blade 6. Wiper link Adjustment ................ page S-42 7. Washer tank Installation Note ........... page S-42 8. Washer motor 2. Cowl grille Inspection ................. page S-38 3. Baffle cover 9. Washer nozzle 4. Fuse box Adjustment ................ page S-42 5. Wiper motor 10. Washer pipe Inspection .................. page S-38 Gartner Banana

WINDSHIELD WIPER AND WASHER s WITH 1. Main fuse box 2. Wiper motor Inspection . . . . . . . . . . . . . . . . . page S-38 Gartner Banana