1994 MAZDA MX-5 Workshop Manual

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

ANTILOCK BRAKE SYSTEM (ABS) 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 4. If continuity is not as specified, replace the valve relay. Connect to a 0 12V - b Ground - d b 0 c d e - 0 0 Gartner Banana

ANTILOCK BRAKE SYSTEM (ABS) ABS WHEEL SPEED SENSOR (FRONT) Removal 1 Inspection / Installation 1. Removal in the order shown in the figure. 2. Install in the reverse order of removal. I. Connector 2. Bolts 3. Bolt 4. Wheel speed sensor lnspection . . . . . . . . . . . . . . . . . . . . . . . below Inspection Wheel speed sensor 1. Measure resistance between terminals of the wheel speed sensor. Resistance: 1 .&I .2 kQ 2. If not as specified, replace the wheel speed sensor. Gartner Banana

ANTILOCK BRAKE SYSTEM (ABS) P ABS SENSOR ROTOR (FRONT) Removal l Inspection / lnstallation 1. Inspect the ABS sensor rotor for missing and damaged teeth. Note The sensor rotor does not need to be removed unless you are replacing it. 2. Remove in the order shown in the figure, referring to Removal Note. 3. Install in the reverse order of removal, referring to lnstallation Note. 25UOPX-03 1. Wheel hub 2. ABS sensor rotor .......... Removal / Installation section M Removal Note ................... below Installation Note ................. below Removal note ABS sensor rotor Remove the sensor rotor from the wheel hub with the SST. lnstallation note ABS sensor rotor Press a new sensor rotor onto the wheel hub with the SST. Gartner Banana

ANTILOCK BRAKE SYSTEM (ABS) ABS WHEEL SPEED SENSOR (REAR) Removal 1 Inspection I Installation 1. Remove the filler pipe protector (left side). 2. Remove the spare tire (right side). 3. Remove in the order shown in the figure. 4. Install in the reverse order of removal. 1. Connector 2. Mud guard 3. Bolts 4. Wheel speed sensor lnspection . . . . . . . . . . . . . . . . . . . . . . . below lnspection Wheel speed sensor 1. Measure resistance between terminals of the wheel speed sensor. Resistance: 1 .O-1.2 kR 2. If not as specified, replace the wheel speed sensor. Gartner Banana

ANTILOCK BRAKE SYSTEM (ABS) P ABS SENSOR ROTOR (REAR) Removal / Inspection 1. Inspect the ABS sensor rotor for missing and damaged teeth. Note The sensor rotor does not need to be removed unless you are replacing it. 2. Remove in the order shown in the figure, referring to Removal Note. 25uopx-o: 1. Drive shaft 2. Sensor rotor Removal . :. . . . . . . . . . . . . . . . . . . section M Removal Note . . . . . . . . . . . . . . . . . . . below 3. Boot band and boot Removal note Sensor rotor Tap the sensor rotor off the drive shaft with a chisel. Gartner Banana

P ANTILOCK BRAKE SYSTEM (ABS) -.A 1. Sensor rotor 3. Drive shaft ................... ................. Installation Note below Installation section M 2. Boot and boot band ................... Installation section M lnstallation note ABS sensor rotor Set a new sensor rotor on the drive shaft and press it on with the SST. Gartner Banana

WHEELS AND TIRES OUTLINE. .. .. . . . . . . . . . ... . . .. .. . .. .. . . . . . . . . . Q- 2 SPECIFICATIONS ....... ......... ... .. .. .. .. Q- 2 TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . Q- 2 WHEELS AND TIRES . . . . . . . . . . . . . . . . . . . . . . . . . Q- 3 SPECIAL NOTES ABOUT WHEELS AND TIRES.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Q- 3 NOTES REGARDING TIRE REPLACEMENT . . . Q- 3 INSPECTION 1 ADJUSTMENT . . . . . . . . . . . . . . . . Q- 3 REMOVAL I INSTALLATION . . . . . . . . . . . . . . . . . . Q- 4 TIRE ROTATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . Q- 5 WHEEL BALANCE ADJUSTMENT . . . . . . . . . . . . Q- 5 05UOQX-001 Gartner Banana