1997 MAZDA MX-5 sensor

Disconnect output speed sensor connector. See Fig. 3. Measure resistance between terminals. Resistance
should be 245 ohms. Replace as needed.
SOLENOID VALVES (EXCEPT TCC SOLENOID)
Disconnect negative battery cable. Disconnect transmission solenoid harness connector. See Fig. 3
. Note that
solenoids ground through transmission case. Check resistance between connector terminals and ground. See
Fig. 7
. Resistance should be 13-27 ohms. Replace solenoids as necessary. See SOLENOID VALVE
IDENTIFICATION table. Ensure transmission case is grounded.
Fig. 7: Identifying Solenoid Valve Terminals

Courtesy of MAZDA MOTORS CORP.
SOLENOID VALVE IDENTIFICATION
TCC SOLENOID
Disconnect ne
gative battery cable. Disconnect TCC solenoid harness connector. See Fig. 3 . Check resistance
Solenoid Valve(1) Terminal No.
1-2 Shift SolenoidC
2-3 Shift SolenoidD
3-4 Shift SolenoidA
3-2 ControlB
(1)See Fig. 7 for terminal identification.

1997 Mazda MX-5 Miata
1997 AUTOMATIC TRANSMISSIONS NC4A-EL Electronic Controls
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between connector terminals and ground. Resistance should be 13-25 ohms. Replace solenoids as necessary.
Ensure transmission case is grounded.
VEHICLE SPEED SENSOR (VSS)
Disconnect negative battery cable. Remove combination meter. Disconnect harness connectors and speedometer
cable. Connect analog voltmeter leads to meter terminals "A" and "B". See Fig. 8
. Using appropriate
screwdriver, rotate speedometer cable shaft. If voltmeter needle does not fluctuate, replace sensor.
Fig. 8: Testing Vehicle Speed Sensor

Courtesy of MAZDA MOTORS CORP.
TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR
Disconnect TFT sensor harness connector. Sensor is threaded into cooler line banjo mounting on side of
transmission case. Measure resistance between connector terminals. See TFT SENSOR SPECIFICATIONS

table.
TFT SENSOR SPECIFICATIONS NOTE: Vehicle speed sensor signal is input to TCM from combination meter driven by
speedometer cable.
Fluid Temperaturek/ohms
68°F (20°C)2.5
140°F (60°C).6

1997 Mazda MX-5 Miata
1997 AUTOMATIC TRANSMISSIONS NC4A-EL Electronic Controls
Microsoft
Sunday, July 05, 2009 1:35:04 PMPage 23 © 2005 Mitchell Repair Information Company, LLC.

Fig. 11: TCM Pin Voltage Table (2 Of 2)
Courtesy of MAZDA MOTORS CORP.
ELECTRICAL SPECIFICATIONS
SOLENOID RESISTANCE SPECIFICATIONS
ComponentResistance Ohms
Solenoids
Shift Solenoids13-27
TCC Solenoid13-25
Sensor
TSS245

1997 Mazda MX-5 Miata
1997 AUTOMATIC TRANSMISSIONS NC4A-EL Electronic Controls
Microsoft
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1997-2001 DRIVE AXLES
Axle Shafts - MX-5 Miata
TROUBLE SHOOTING
Inspect CV joint boot on axle shaft for cracks, damage, leaking, grease, and looseness in boot band. Inspect axle
shaft for bending, cracks, and wear of joint splines. Repair or replace as necessary.
REMOVAL & INSTALLATION
AXLE SHAFTS
Removal
1. Raise vehicle and support with safety stands. Remove wheel and tire assembly. Remove axle shaft lock
nut. See Fig. 1
.
2. Remove brake caliper assembly. Remove lower control arm bolt at knuckle, and pull knuckle/hub
assembly outward. Using pry bar between differential housing and inner CV joint, remove inner CV joint
from differential. See Fig. 2
. Remove axle shaft from knuckle/hub assembly. NOTE: See DRIVE AXLE NOISE DIAGNOSIS article in GENERAL INFORMATION.
CAUTION: If vehicle is equipped with ABS, before performing following procedure,
remove ABS wheel speed sensor (axle side) and fix it to an appropriate
place where sensor will not be pulled by mistake while servicing vehicle.
NOTE: If axle shaft will not come out of rear hub support easily, install a discarded nut
onto axle shaft so that nut is flush with end of axle shaft. Tap nut with a copper
hammer to loosen axle shaft from wheel hub.

1997 Mazda MX-5 Miata
1997-2001 DRIVE AXLES Axle Shafts - MX-5 Miata

1997 Mazda MX-5 Miata
1997-2001 DRIVE AXLES Axle Shafts - MX-5 Miata
Microsoft
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MASTER CYLINDER
Removal & Installation
Disconnect fluid level sensor electrical connector at fluid reservoir. Disconnect and plug brake lines at master
cylinder to prevent entry of dirt and loss of fluid. Remove nuts attaching master cylinder to power brake unit.
Remove master cylinder from vehicle. To install master cylinder, reverse removal procedure. Bleed air from
system.
POWER BRAKE UNIT
Removal & Installation
Remove master cylinder from power brake unit. See MASTER CYLINDER . Disconnect vacuum line at
power brake unit. See Fig. 19 . From inside vehicle, remove cotter pin and clevis pin. Separate push rod from
brake pedal. Remove power brake unit-to-firewall nuts. Remove power brake unit. To install, reverse removal
procedure. Bleed air from system.
Fig. 19: Removing Power Brake Unit (Typical)

Courtesy of MAZDA MOTORS CORP.
OVERHAUL
in SUSPENSION.

1997 Mazda MX-5 Miata
BRAKE SYSTEM 1995-97 BRAKES Mazda - Disc & Drum
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axle shaft housing. Remove axle oil seal. See Fig. 5. With axle shaft removed, remove retaining ring.
Remove ABS sensor rotor.
4. To remove bearing collar, grind collar until a section about .02" (.50 mm) remains. Using chisel, cut
remaining bearing collar from axle shaft. Using Puller (49-S121-520A), remove axle bearing from axle
shaft. Remove dust shield and backing plate.
5. Using dial indicator and "V" blocks, check axle shaft for straightness. Maximum axle shaft runout
is .059" (1.50 mm). Also check axle shaft splines for wear and damage. Use a press to replace wheel studs
as necessary. DO NOT reuse wheel studs if removed.
Installation
To install, reverse removal procedure. Lubricate oil seal lip before replacement. Use Attachment (49-1011-748)
and a press to install axle bearing onto axle shaft. DO NOT lubricate bearing collar before replacement. Use
Attachment (49-1011-748) and a press to install NEW bearing collar. If press fit of collar requires less than 2.7
tons (2699 k
g) to install, replace axle shaft. Tighten nuts to specification. See TORQUE SPECIFICATIONS.

1997 Mazda MX-5 Miata
1997-98 DRIVE AXLES Differentials & Drive Axles - MPV & MX-5 Miata
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See REAR AXLE SHAFTS & BEARINGS.
2. Remove ABS wheel speed sensor. Mark drive shaft and differential carrier flanges for reassembly
reference and remove drive shaft from differential carrier. Remove differential carrier-to-housing bolts.
Remove differential carrier.
Installation
To install, reverse removal procedure. Apply sealant to carrier mating flange. Align marks made during
removal. Refill differential with lubricant. Tighten all nuts and bolts to specification. See TORQUE
SPECIFICATIONS .
Removal (Miata)
1. Raise and support vehicle. Remove wheel and tire assembly. Drain differential. Remove differential
mounting pipe. Remove exhaust pipe. Mark drive shaft and differential carrier flanges for reassembly
reference and remove drive shaft from differential carrier. See Fig. 7
. Disconnect speedometer cable
from transmission. Notin
g locations, disconnect wiring harness from Power Plant Frame (PPF).

1997 Mazda MX-5 Miata
1997-98 DRIVE AXLES Differentials & Drive Axles - MPV & MX-5 Miata
Microsoft
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TORQUE SPECIFICATIONS (MPV)
Power Plant Frame-To-Differential
Side Mounting Bolts (Long)77-91 (104-123)
Spacer Bolt (Short)27-38 (37-52)
Power Plant Frame-To-Transmission Side Mounting Bolts (Long)77-91 (104-123)
Ring Gear Retaining Bolts51-61 (69-83)
Wheel Lug Nuts65-87 (88-118)
ApplicationFt. Lbs. (N.m)
AFW Extension Housing Mount Nut (4WD)49-72 (66-98)
Brake Pipe Union10-16 (14-22)
Differential Carrier Bearings Cap Bolts Front Differential27-38 (37-52)
Differential Carrier Bearings Cap Bolts Rear Differential54-78 (73-106)
Differential Carrier Bearings Lock Plate Bolt13-19 (18-26)
Differential Carrier-To-Housing Nuts/Bolts17-19 (23-26)
Differential-To-Chassis Mount Nuts (4WD)49-72 (66-98)
Drive Pinion Lock Nut94-210 (127-284)
Drive Shaft Companion Flange Nuts37-43 (50-58)
Filler Plug29-40 (39-54)
Lower Ball Joint-To-Control Arm Bolts (4WD)75-101 (102-137)
Lower Ball Joint-To-Control Arm Nut (4WD)94-127 (127-172)
Rear ABS Wheel Speed Sensor Bolt12-16 (16-22)
Rear Axle Shaft Assembly-To-Axle Shaft Housing Retaining Nuts40-49 (54-66)
Rear Brake Caliper Bolts37-43 (50-58)
Ring Gear Retaining Bolts51-61 (69-83)
Skid Plate Bolts (4WD)12-17 (16-23)
Tie Rod End Nut (4WD)43-58 (58-78)
Wheel Lug Nuts65-87 (88-118)

1997 Mazda MX-5 Miata
1997-98 DRIVE AXLES Differentials & Drive Axles - MPV & MX-5 Miata
Microsoft
Sunday, July 05, 2009 1:52:42 PMPage 23 © 2005 Mitchell Repair Information Company, LLC.