1997 MAZDA MX-5 audio

GENERATOR & REGULATOR
1997 STARTING & CHARGING SYSTEMS Mazda - Generators & Regulators
DESCRIPTION & OPERATION
Generator is a conventional 3-phase, self-rectifying type with 6 diodes (3 positive and 3 negative) that rectify
current. Internal regulator is solid-state type.
ADJUSTMENTS
BELT DEFLECTION
Measure belt deflection in center of longest pulley-to-pulley span. See BELT DEFLECTION
SPECIFICATIONS table. If belt deflection is not as specified, adjust as necessary.
BELT DEFLECTION SPECIFICATIONS
TROUBLE SHOOTING
TROUBLE SHOOTING PRECAUTIONS
Observe the following precautions when trouble shooting or testing charging system:
Obtain code number and deactivate audio anti-theft system before disconnecting battery (if equipped).
DO NOT reverse battery cable connections. Rectifier will be damaged.
DO NOT use high voltage type testers.
Battery voltage should always exist at generator terminal "B".
DO NOT ground generator terminal "L" while engine is running.
DO NOT start engine with connector disconnected from generator terminals "L" and "S".
DO NOT apply battery voltage to terminal "L".
ON-VEHICLE TESTING
* PLEASE READ FIRST *
Application(1) Deflection - In. (mm)
New Belt0.22-0.28 (5.5-7.0)
Used Belt0.24-0.30 (6.0-7.5)
(1)With 22 lbs. (10 kg) applied to belt.
NOTE: See TROUBLE SHOOTING article in GENERAL INFORMATION.

1997 Mazda MX-5 Miata
GENERATOR & REGULATOR 1997 STARTING & CHARGING SYSTEMS Mazda - Generators & Regulators

1997 Mazda MX-5 Miata
GENERATOR & REGULATOR 1997 STARTING & CHARGING SYSTEMS Mazda - Generators & Regulators
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ENGINE
Removal (Miata)
1. Release residual pressure from fuel system. See FUEL PRESSURE RELEASE & PRIMING .
Disconnect negative battery cable from trunk-mounted battery. Reference mark and remove hood. Raise
vehicle and remove engine undercover. See Fig. 2
. Drain engine, transmission and cooling system fluids.
2. Remove transmission. For automatic transmission removal procedure, see REMOVAL &
INSTALLATION article in TRANSMISSION SERVICING. For manual transmission removal
procedure, see appropriate article in CLUTCHES. NOTE: On Miata with audio anti-theft system, radio will not operate if power to radio is
cut. Obtain code from customer to reactivate radio. To reactivate radio after
reconnecting power supply, turn ignition switch to ACC position. Press and
hold FF and REW buttons until CODE is displayed. Again press and hold FF and
REW buttons until bars (----) are displayed. Use preset button No. 1 to enter first
number. Use preset buttons No. 2 to enter second number, 3 for third number,
etc. Press FF and REW buttons for about 1.5 seconds until a beep is heard.
After 5 seconds, flashing CODE will disappear and radio will operate.

1997 Mazda MX-5 Miata
1997-98 ENGINES 1.8L 4-Cylinder
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STARTER - DIRECT DRIVE
1997 STARTING & CHARGING SYSTEMS Mazda - Starters - Direct Drive
DESCRIPTION & OPERATION
Direct drive starter is a conventional 12-volt, 4-pole, brush-type starter. The integral solenoid is attached to the
drive housing. The overrunning clutch pinion drive is mounted directly on end of armature shaft drive.
TROUBLE SHOOTING
ON-VEHICLE TESTING
* PLEASE READ FIRST *
CIRCUIT TESTING
If starter does not operate, check voltage at starter "S" terminal with ignition switch in START position (and
clutch depressed on M/T). See Fig. 1
. If voltage is greater than 8 volts, repair or replace starter as required. If
volta
ge is 8 volts or less, check ignition switch, park/neutral switch (A/T), interlock switch (M/T) and wiring. NOTE: See TROUBLE SHOOTING article in GENERAL INFORMATION.
NOTE: On all models with anti-theft system, obtain code number and deactivate audio
anti-theft system before disconnecting battery.
NOTE: Before testing, ensure battery is fully charged, battery cables and terminals are
clean and tight, and engine grounds are good.

1997 Mazda MX-5 Miata
STARTER - DIRECT DRIVE 1997 STARTING & CHARGING SYSTEMS Mazda - Starters - Direct Drive

1997 Mazda MX-5 Miata
STARTER - DIRECT DRIVE 1997 STARTING & CHARGING SYSTEMS Mazda - Starters - Direct Drive
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FIELD WINDING TEST
1. Connect one ohmmeter lead to field coil lead ("M" terminal wire). Connect other lead of ohmmeter to
soldered portion of brush lead. If continuity does not exist, repair or replace field coil.
2. Check field coil for short to ground by connecting one ohmmeter lead to field coil lead ("M" terminal
wire) and other ohmmeter lead to field coil housing. If continuity exists, repair or replace field coil.
OVERRUNNING CLUTCH PINION DRIVE
Hold overrunning clutch housing and turn pinion gear by hand. If pinion turns in both directions or does not
turn at all, clutch is faulty. Replace clutch. DO NOT clean overrunning clutch with solvent, as it is packed with
grease and sealed by manufacturer.
REMOVAL & INSTALLATION
Removal & Installation
Disconnect negative battery cable. Raise vehicle on hoist. Remove engine undercover (if equipped). Disconnect
wiring from starter. Remove starter mounting bolts and starter. To install, reverse removal procedure. Tighten
starter mounting bolts to specification. See TORQUE SPECIFICATIONS
.
OVERHAUL
(1)Information is not available at time of publication.
NOTE: On models with anti-theft system, obtain code number and deactivate audio
anti-theft system before disconnecting battery.
NOTE: Overhaul procedures are not available at time of publication. See illustration for
exploded view of starter. See Fig. 4
.

1997 Mazda MX-5 Miata
STARTER - DIRECT DRIVE 1997 STARTING & CHARGING SYSTEMS Mazda - Starters - Direct Drive
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ON-VEHICLE TESTING
* PLEASE READ FIRST *
CIRCUIT TEST
If starter does not operate, check voltage at starter "S" terminal with ignition switch in START position. See
Fig. 2
. If voltage is greater than 8 volts and vehicle does not crank, repair or replace starter as required. If
volta
ge is 8 volts or less, check ignition switch, park/neutral switch (A/T) and wiring. NOTE: See TROUBLE SHOOTING - BASIC PROCEDURES article.
NOTE: On models with anti-theft system, obtain code number and deactivate audio
anti-theft system before disconnecting battery.
NOTE: Before testing, ensure battery is fully charged, battery cables and terminals are
clean and tight, and engine grounds are good.

1997 Mazda MX-5 Miata
STARTER - REDUCTION GEAR 1997 STARTING & CHARGING SYSTEMS Mazda - Starters - Reduction Gear
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FIELD WINDING TEST
1. Connect one ohmmeter lead to field coil lead ("M" terminal wire). Connect other lead of ohmmeter to
soldered portion of brush lead. If continuity does not exist, repair or replace field coil.
2. Check field coil for short to ground by connecting one ohmmeter lead to field coil lead ("M" terminal
wire) and other ohmmeter lead to field coil housing. If continuity exists, repair or replace field coil.
OVERRUNNING CLUTCH PINION DRIVE
Hold overrunning clutch housing and turn pinion gear by hand. If pinion turns in both directions or does not
turn at all, clutch is faulty. Replace clutch. DO NOT clean overrunning clutch with solvent, as it is packed with
grease and sealed by manufacturer.
REMOVAL & INSTALLATION
Removal & Installation
Disconnect negative battery cable. Raise vehicle on hoist. Remove engine undercover (if equipped). Disconnect
wiring from starter. Remove starter mounting bolts and starter. To install, reverse removal procedure. Tighten
starter mounting bolts to specification. See TORQUE SPECIFICATIONS
.
OVERHAUL
Fig. 4: Exploded View Of Coaxial Planetary Gear Type Starter
Courtesy of MAZDA MOTORS CORP. NOTE: On models with anti-theft system, obtain code number and deactivate audio
anti-theft system before disconnecting battery.
NOTE: Overhaul procedures are not available at time of publication. See illustrations
for exploded views of starters. See Fig. 4
.

1997 Mazda MX-5 Miata
STARTER - REDUCTION GEAR 1997 STARTING & CHARGING SYSTEMS Mazda - Starters - Reduction Gear
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This minimizes chance of injury in the event of accidental air bag deployment.
When placing a live air bag module on any surface, always face trim cover upward to reduce motion of
module if it is accidentally deployed.
If an open circuit is present, replace entire wiring harness. DO NOT attempt to repair wire(s).
Air bag system clockspring MUST be aligned in neutral position, since its rotation ability is limited. DO
NOT turn steering wheel or column after removal of steering gear.
A double-lock mechanism is used on clockspring connectors. DO NOT use excessive force when
disconnecting connectors, as damage to connector may occur.
AIR BAG DISABLING & ACTIVATING
DISABLING SYSTEM (MIATA, MILLENIA, MPV, MX-6, PROTEGE & 626)
1. Obtain radio code from customer and deactivate audio anti-theft function (if equipped). Turn ignition off.
Disconnect and shield negative battery cable. Wait at least one minute for back-up power supply to be
depleted. Remove lower cover panel(s) below left side of instrument panel.
2. On MPV, remove lower steering column shroud. On all models, disconnect Orange and Blue clockspring
connectors for driver air bag module. See Fig. 1
. On all models except 1995 Protege and 1995 MPV,
remove glove box compartment. Disconnect Orange and Blue connectors for passenger air bag module.
See Fig. 2
.
ACTIVATING SYSTEM (MIATA, MILLENIA, MPV, MX-6, PROTEGE & 626)
1. Ensure negative battery cable is still disconnected. On all models except 1995 Protege and 1995 MPV,
reconnect Orange and Blue connector for passenger air bag module. Install glove box compartment.
2. On all models, reconnect Orange and Blue clockspring connectors for driver air bag module. Install lower
cover panel(s). On MPV, install lower steering column shroud. On all models, reconnect negative battery
cable.
3. Turn ignition on. Check AIR BAG warning light to ensure air bag system is operating properly. See
SYSTEM OPERATION CHECK
. Activate audio anti-theft function (if equipped).
DISABLING SYSTEM (MX-3, RX7 & 929)
1. Obtain radio code from customer and deactivate audio anti-theft function. Turn ignition off. Disconnect
and shield ne
gative battery cable. Wait at least one minute for back-up power supply to be depleted. WARNING:Wait about one minute after disabling air bag system before servicing. Air
bag system voltage is maintained for about one minute after system is
disabled. Failure to wait one minute before servicing system may cause
accidental air bag deployment and possible personal injury.
CAUTION: When battery is disconnected, vehicle computer and memory systems
may lose memory data. Driveability problems may exist until computer
systems have completed a relearn cycle.

1997 Mazda MX-5 Miata
STEERING COLUMN 1995-97 STEERING Mazda Motors Corp. - Steering Columns
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2. Disconnect diagnostic module connectors located at base of steering column and connect Short Circuit
Connectors (49-H066-004 ) to diagnostic module harness connectors. See Fig. 3
.
ACTIVATING SYSTEM (MX-3, RX7 & 929)
1. Ensure negative battery cable is still disconnected. Remove short circuit connectors from diagnostic
module harness connectors. See Fig. 3
. Reconnect diagnostic module harness connectors to diagnostic
module.
2. Reconnect negative battery cable. Turn ignition on. Check AIR BAG warning light to ensure air bag
system is operating properly. See SYSTEM OPERATION CHECK
. Activate audio anti-theft function
(if equipped).
Fig. 1: Disconnecting Clockspring Connectors (Typical)

Courtesy of MAZDA MOTORS CORP.

1997 Mazda MX-5 Miata
STEERING COLUMN 1995-97 STEERING Mazda Motors Corp. - Steering Columns
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