1994 MAZDA MX-5 fuse

SHIFT MECHANISM (WITH SHIFT-LOCK SYSTEM) K TROUBLESHOOTING Circuit Diagram - 1-21 AT SHIFT-LOCK SYSTEM Diagnosis chart Problem -- Selector lever cannot be moved from P range with brake pedal depressed and ignition switch ON Possible cause ROOM 1 OA fuse burned or not installed METER 10A fuse burned IG1 system malfunction Wire harness broken Poor connection IG 80A fuse burned Ignition switch malfunction Stop light switch remains OFF Stop light system malfunction Wire harness broken Poor connection STOP 15A fuse burned P range switch remains OFF P range switch system malfunction Wire harness broken (poor ground) Poor connection Shift-lock actuator malfunction Wire harness broken Poor connection Misadjustrnent of selector lever or improper assembly of shift-lock actuator Action I Page Repair or replace Connect firmly Replace Install or replace Replace K-155 K-155 Repair or replace K-155 Connect firmly K-155 Replace K-155 Inspect and replace Adjust or replace section T section T Repair or replace Connect firmly Inspect and replace Repair or replace Connect firmly Adjust or repair K-155 K-I55 K-155 K-155 K-159 Gartner Banana

K ' SHIFT MECHANISM (WITH SHIFT-LOCK SYSTEM) Problem Possible cause Selector lever can be ROOM 1OA fuse burned or not installed moved lrom nnp. [stop light switch remains ON with ignition switch ON, but without brake pedal I Shift-lock actuator malfunction depressed Misadjustment of selector lever or improper assembly of shift-lock actuator Selector lever can be ROOM 10A fuse burned or not installed range Ignition switch malfunction with ignition switch OFF and brake pedal de- Shift-lock actuator malfunction pressed Misadjustrnent of selector lever or improper assembly of shift-iock actuator Shift-lock actuator op- P range switch remains ON eration heard when brake pedal depressed ' Misadjustment of selector lever or improper assembly with ignition switch ON of shift-lock actuator in other than P range Action -- Install or replace Adjust or replace lnspect and replace Adjust or replace Install or replace Inspect and replace inspect and replace Adjust or replace Inspect and replace Adjust or replace section T K-159 Selector lever remains locked when emergency override button oper- ated Emergency override button not pushed fully down Broken emergency override button lgnitlon key can be turned to lock position with selector lever in other than P range Push down fully and hold emergency override but- Misadjustment of indicator pedal ROOM 10A fuse burned or not installed Key interlock solenoid malfunction Wire harness broken Poor connection P range switch remains ON P range switch system malfunction Wire harness broken Poor connection lnspect and replace Repair or replace Connect firmly Adjust Install or replace K-161 - K-151 Inspect and replace Repair or replace Connect firmly I lanition kev cannot be I P ranae switch remains OFF I lns~ect and replace 1 K-158 I K-159 K-166 K-166 Key cylinder (push switch) malfunction Wire harness broken Poor connection Key interlock unit malfunction I ~~~~~$1~~~~ I Key iierlock solenoid malfunction I' I I Inspect and replace I K-158 I range Inspect and replace Repair or replace Connect firmly Inspect and replace Key cylinder (push switch) malfunction I Inspect and replace I section T section T K-155 K-155 section T I I Misadjustment of selector lever 1 Adjust I K-160 ] Gartner Banana

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