4. Disconnect SAS unit connector. Check wiring between terminal K of SAS unit connector and terminal C
of passenger-side air bag module connector for short to ground, short to power or open circuit. If wiring
is OK, replace SAS unit. See SAS UNIT
under REMOVAL & INSTALLATION. If wiring is not OK,
replace wiring harness between passenger-side air bag module and SAS unit. Perform SYSTEM
OPERATION CHECK .
WIRE REPAIR
DO NOT repair air bag system wiring. If a problem is found with air bag system wiring, replace faulty wiring.
TORQUE SPECIFICATIONS
TORQUE SPECIFICATIONS
WIRING DIAGRAM
ApplicationFt. Lbs. (N.m)
Passenger-Side Air Bag Module Retaining Bolts13-20 (18-27)
Steering Wheel Nut29-36 (39-49)
INCH Lbs. (N.m)
Driver-Side Air Bag Module Retaining Nuts35-52 (4.0-5.8)
SAS Unit Retaining Nuts61-86 (6.7-9.8)
1997 Mazda MX-5 Miata
AIR BAG RESTRAINT SYSTEM 1997 ACCESSORIES/SAFETY EQUIPMENT Mazda - Air Bag Restraint System
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2. Disconnect ABS control module electrical connector. Remove ABS control module mounting bolts/nuts.
Remove ABS control module. To install, reverse removal procedure. Tighten ABS control module
mounting bolts/nuts to 61-87 INCH lbs. (6.9-9.8 N.m).
HYDRAULIC UNIT
Removal & Installation
1. Disconnect negative battery cable. Disconnect hydraulic unit electrical connector. Using Flare Nut
Wrench (49-0259-770B), disconnect brakelines from hydraulic unit. Note location of brakelines for
installation reference. Disconnect electrical connectors. Remove hydraulic unit mounting bolts and nuts.
2. Remove hydraulic unit. To install, reverse removal procedure. Tighten mounting bolts and nuts to
specification. See TORQUE SPECIFICATIONS
. Add fluid and bleed air from system. See
BLEEDING BRAKE SYSTEM
.
FRONT WHEEL SPEED SENSOR ROTOR
Removal
Raise and support vehicle. Remove front wheel assemblies. Remove brake caliper and wire aside. Remove
rotor. Remove grease cap and wheel bearing lock nut. Remove wheel hub. Using Puller (49-0839-425C) and
Attachment (49-F027-007), remove wheel speed sensor rotor from hub.
Installation
To install, reverse removal procedure. Tighten bolts and nuts to specification. See TORQUE
SPECIFICATIONS .
REAR WHEEL SPEED SENSOR ROTOR
Removal
Raise and support vehicle. Remove rear wheel assemblies. Remove brake caliper and wire aside. Remove wheel
bearing lock nut. Remove lower control arm-to-rear steering knuckle bolt and nut. Remove drive axle. DO NOT
disassemble drive axle assembly to remove sensor rotor. Replace drive axle assembly.
Installation
To install, reverse removal procedure. Tighten bolts and nuts to specification. See TORQUE
SPECIFICATIONS .
WHEEL SPEED SENSOR
Removal & Installation
Raise and support vehicle. Remove wheel assemblies. Disconnect wheel speed sensor electrical connector.
Remove wheel speed sensor mounting bolt. Remove wheel speed sensor from vehicle. To install, reverse
1997 Mazda MX-5 Miata
ANTI-LOCK BRAKE SYSTEM 1997 BRAKES Mazda - Anti-Lock
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With engine off, depress pedal a few times to eliminate vacuum. Depress brake pedal by hand and check pedal
free play. See BRAKE PEDAL FREE PLAY SPECIFICATIONS
table. Adjust play by loosening push rod
lock nut. Turn push rod until correct free play is obtained. Tighten push rod lock nut to 18-25 ft. lbs. (24-34
N.m).
BRAKE PEDAL FREE PLAY SPECIFICATIONS
PARKING/EMERGENCY BRAKE
1. Depress brake pedal several times. Pull parking brake lever with a force of 44 lbs. (20 kg). If stroke is 7-9
notches, parking brake is properly adjusted. If stroke is not 7-9 notches, raise and support rear of vehicle.
Release parking brake lever.
2. Rotate cable adjusting nut at lever end of cable, located under console cover, until stroke is within
specification. Ensure rear brakes do not drag. Ensure parking brake warning light illuminates when brake
lever is pulled one notch.
TORQUE SPECIFICATIONS
TORQUE SPECIFICATIONS
WIRING DIAGRAMS
ApplicationIn. (mm)
Miata.16-.28 (4-7)
ApplicationFt. Lbs. (N.m)
Brake Caliper Mounting Bolts37-50 (50-68)
Brakeline Nuts10-16 (14-22)
Hydraulic Unit Brakeline Union Bolts18-26 (24-35)
Hydraulic Unit Mounting Bolts/Nuts14-18 (19-24)
I-Arm-To-Rear Steering Knuckle Bolt (RX7)44-54 (59-73)
Lower Control Arm-To-Rear Steering Knuckle Nut47-54 (64-73)
Push Rod Lock Nut18-25 (24-34)
Stoplight Switch Lock Nut10-13 (14-18)
Wheel Bearing Lock Nut
Front123-159 (167-216)
Rear159-217 (216-294)
Wheel Lug Nuts66-86 (89-117)
Wheel Speed Sensor Mounting Bolt12-16 (16-22)
INCH Lbs. (N.m)
ABS Control Unit Mounting Bolts/Nuts61-87 (6.9-9.8)
1997 Mazda MX-5 Miata
ANTI-LOCK BRAKE SYSTEM 1997 BRAKES Mazda - Anti-Lock
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TORQUE SPECIFICATIONS
ApplicationFt. Lbs. (N.m)
Axle Shaft Lock Nut
1997160-216 (216-294)
1999-2001174-235 (236-318)
Brake Caliper Mounting Bolt37-50 (50-68)
Lower Control Arm Bolt/Nut47-54 (64-73)
Wheel Lug Nuts66-86 (89-117)
1997 Mazda MX-5 Miata
1997-2001 DRIVE AXLES Axle Shafts - MX-5 Miata
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caliper. Remove rear brake pads. See REAR DISC BRAKE PADS. Remove remaining caliper guide
bolt. Remove brake caliper from caliper mount. To install, reverse removal procedure. Bleed air from
system.
Removal & Installation (MX-3)
1. Raise and support rear of vehicle. Remove rear wheel assemblies. Release parking brake and disconnect
parking brake cable from caliper. Disconnect brake flexhose from caliper. See Fig. 13
.
2. Remove upper caliper mounting bolt. Rotate caliper downward. Remove "V" spring, pads, shims and
guide plates. Replace brake pads if pad lining thickness is less than .04" (1.0 mm).
3. Remove lower caliper mounting bolt. Pull caliper toward center of vehicle to slide it off of caliper mount.
To install, reverse removal procedure. Using Brake Piston Wrench (49 FA18 602), turn wrench clockwise
until piston bottoms out in brake caliper. Bleed air from system.
REAR BRAKE ROTOR
Removal & Installation (Miata, Millenia, MPV, MX-3, MX-6, Protege, RX7, 626 & 929)
1. Raise and support vehicle. Remove rear wheel assemblies. Remove rear brake caliper with brake hose
connected. See REAR BRAKE CALIPER
. Support caliper using wire. Remove rotor-to-hub screws (if
equipped). Remove rotor.
2. Machine rotor if lateral runout exceeds specification. Replace rotor if measured thickness is less than
specified minimum thickness. See DISC BRAKE SPECIFICATIONS
.
3. To install, reverse removal procedure. Check end play at grease cap. On 929, if end play
exceeds .004" (.10 mm), check lock nut torque or replace wheel bearings. On all other models, if end play
exceeds .002" (.05 mm), check lock nut torque or replace wheel bearings.
REAR BRAKE SHOES & WHEEL CYLINDERS
Removal (B2300, B3000 & B4000)
1. Raise and support vehicle. Remove rear wheel assemblies. Remove brake drum. Machine or replace drum
as necessary if inner diameter is not as specified. See DRUM BRAKE SPECIFICATIONS
.
2. Place a wheel cylinder clamp over ends of wheel cylinder. Disengage adjusting lever from adjusting
screw by pulling backwards on self adjuster cable. See Fig. 15
.
3. Move outboard side of adjusting screw upward and back off pivot nut as far as possible. Pull adjusting
lever, cable and adjusting lever spring down and toward rear to unhook pivot hook from large hole in
secondary shoe. DO NOT pry pivot hook from hole.
4. Remove adjusting lever spring and adjusting lever. Remove secondary shoe-to-retracting spring. Remove
primary shoe-to-retracting spring. Unhook cable anchor and remove anchor pin plate.
5. Note color and position of shoe hold-down springs for reassembly. Remove cable guide, shoe hold-down
springs, brake shoes, adjusting screw, pivot nut and socket. Remove parking brake link spring and link.
6. Disconnect parking brake cable from lever. Remove secondary shoe. Disassemble parking brake lever
from shoe by removing retaining clip and spring washer. See Fig. 16
. Remove brake cylinder-to-shoe
connectin
g links. Disconnect brake line from brake cylinder. Remove brake cylinder.
1997 Mazda MX-5 Miata
BRAKE SYSTEM 1995-97 BRAKES Mazda - Disc & Drum
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Installation (B2300, B2500, B3000 & B4000)
1. Lightly coat input shaft splines, release bearing, and fork contact areas with molybdenum disulfide
grease. Align clutch cover dowel holes with flywheel dowels. Tighten clutch cover bolts evenly in a
crisscross pattern to specification. See TORQUE SPECIFICATIONS
.
2. Raise transmission into position. Install and tighten transmission-to-engine block bolts. See TORQUE
SPECIFICATIONS . Install crossmember.
3. On 4WD models, install NEW transfer case gasket. Install transfer case. Tighten transfer case bolts to
specification is sequence. See Fig. 3
. See TORQUE SPECIFICATIONS .
4. On all models, to complete installation, reverse removal procedure. Bleed hydraulic clutch system. See
HYDRAULIC SYSTEM BLEEDING
under ADJUSTMENTS.
Fig. 3: Tightening Transfer Case Bolts (B2300, B2500, B3000 & B4000)
Courtesy of MAZDA MOTORS CORP.
Removal (Miata)
1. Disconnect negative battery cable. Remove gearshift knob, console, and shift lever. See Fig. 4. Raise and
support vehicle. Remove engine undercover. Disconnect exhaust pipe from manifold. Mark drive shaft
flanges for installation reference. Remove drive shaft.
1997 Mazda MX-5 Miata
CLUTCH 1997-98 CLUTCHES Mazda - RWD
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Installation (Miata)
1. Lightly coat input shaft splines, release bearing, and fork contact areas with molybdenum disulfide
grease. Align clutch cover dowel holes with flywheel dowels. Tighten clutch cover bolts evenly in a
crisscross pattern to specification. See TORQUE SPECIFICATIONS
.
2. Place a wooden block on jack, and position jack under front of oil pan. Raise front of engine to ease
transmission installation. Install transmission. Tighten transmission-to-engine block bolts to specification.
See TORQUE SPECIFICATIONS
. Place jack (from front of engine) under transmission.
3. Raise transmission until level with engine. Position Power Plant Frame (PPF) in place. Install
PPF/differential mounting spacer, and tighten bolts to 27-38 ft. lbs. (37-51 N.m). Install and tighten PPF
side mounting bolts.
4. Install sleeve into PPF housing block. Install spacer and bolts. Install reamer bolt into front hole, and
tighten bolt. See Fig. 5
.
5. Install transmission-to-PPF bracket. Install remaining PPF bolts, and tighten to specification. See
TORQUE SPECIFICATIONS
. To complete installation, reverse removal procedure.
RELEASE BEARING & FORK
Removal (B2300, B2500, B3000 & B4000)
With transmission removed, twist release bearing and carrier assembly until preload spring pushes bearing
assembly from slave cylinder. See Fig. 8
.
Installation
Lubricate bearing bore and bearing carrier with NIGI No. 2 (lithium base) grease. Push release bearing
assembl
y onto clutch slave cylinder. NOTE: Front PPF-to-differential side mounting bolt is the reamer bolt, used to
align frame.
NOTE: Use only lithium base grease on release bearing. DO NOT use petroleum base
lubricants.
1997 Mazda MX-5 Miata
CLUTCH 1997-98 CLUTCHES Mazda - RWD
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Fig. 11: Exploded View Of Clutch Release Cylinder (Miata)
Courtesy of MAZDA MOTORS CORP.
TORQUE SPECIFICATIONS
TORQUE SPECIFICATIONS NOTE: Use exploded view of clutch release cylinder for overhaul procedure. See Fig.
11 .
ApplicationFt. Lbs. (N.m)
B2300, B2500, B3000 & B4000
Clutch Cover Bolts (1) 17-24 (23-32)
Crossmember Nuts39-53 (53-72)
Drive Shaft Bolts65-87 (88-119)
Flywheel-To-Crankshaft Nuts54-67 (73-91)
Gearshift Lever Bolt20-30 (27-40)
Starter Mounting Bolts17-20 (23-27)
Transfer Case Bolts (4WD) (2) 35-46 (47-62)
Transmission-To-Engine Block Bolts37-50 (50-68)
Miata
Clutch Cover Bolts (1) 13-19 (18-26)
Drive Shaft Nuts37-43 (50-58)
Flywheel-To-Crankshaft Bolts71-76 (96-103)
PPF-To-Differential Mounting Spacer Bolt (Short)27-38 (37-51)
PPF-To-Differential Side Mounting Bolts (Long)77-91 (104-123)
PPF-To-PPF Bracket Bolt27-40 (37-54)
1997 Mazda MX-5 Miata
CLUTCH 1997-98 CLUTCHES Mazda - RWD
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