ADJUSTMENTS
CLOCKSPRING CENTERING
Set front wheels in straight-ahead position. Turn clockspring connector clockwise until it stops (do not force).
Return connector 2 3/4 turns counterclockwise. Rotate clockspring connector further, if necessary, to align
marks on connector and outer housing.
DISPOSAL PROCEDURES
DEPLOYED AIR BAG
Dispose deployed air bag module as you would any other part. Wear gloves and safety glasses when handling
air bag module.
SCRAPPED VEHICLE
1. Ensure vehicle is outside, and away from other vehicles and people. Open convertible top and doors.
Disconnect negative battery cable.
2. Ensure air bag module is firmly mounted to steering wheel. Remove knee protector and disconnect
Orange and Blue clockspring connectors at base of steering column. See Fig. 1
. Cut clockspring
connector Blue wires.
3. Connect 2 jumper wires (20 feet long) to cut clockspring wires. Connect other ends of wires to a 12-volt
battery to deploy air bag. Because of heat, wait 10 MINUTES before touching deployed air bag.
REMOVAL & INSTALLATION
CRASH SENSORS NOTE: Perform the following procedures when scrapping a vehicle with undeployed air
bag.
WARNING:Follow air bag service precautions to prevent accidentalair bag
deployment and personal injury. See SERVICE PRECAUTIONS.
NOTE: After component replacement, check system to ensure proper operation. See
SYSTEM OPERATION CHECK.
NOTE: Crash sensor orientation and mounting is important for proper operation. All
sensors must be positioned so that arrow points forward. If there is sheet metal
damage near sensor mounting point, inspect body structure at sensor
mounting point for deformation. If damaged, restore to original shape. Ensure
sensor mounting bolts or nuts are tightened to specification. See TORQUE
SPECIFICATIONS table.
1991 Mazda MX-5 Miata
AIR BAG RESTRAINT SYSTEM MAZDA 1990-91 AIR BAGS
Microsoft
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DIAGNOSTIC TEST NO. 1
Warning Light Remains On
Disable air bag system. See DISABLING & ACTIVATING AIR BAG SYSTEM. Ensure diagnostic module
connectors are properly connected. If connector is okay, replace diagnostic module.
DIAGNOSTIC TEST NO. 2
Warning Light Flashes 3 Times
1. Measure battery voltage. If voltage is less than 9 volts, charge battery. If battery voltage is okay, check
fuses/relays in order given in FUSE/RELAY LOCATION table. See Fig. 6
or Fig. 7 .
2. If fuses and relays are okay, disable air bag system. See DISABLING & ACTIVATING AIR BAG
SYSTEM. Ensure back-up battery connector is properly connected. If connection is okay, disconnect
back-up battery connector.
Circuit (See DIAGNOSTIC TEST
NO. 2)
3Flashes 5 TimesFaulty Front Impact Sensor (See
DIAGNOSTIC TEST NO. 3)
4Flashes 10 TimesFaulty Diagnostic Module (System
Down-Fused Burned) (See
DIAGNOSTIC TEST NO. 4)
5Flashes 4 TimesFaulty Rear safing Sensor (See
DIAGNOSTIC TEST NO. 5)
6Flashes 6 TimesFaulty Air Bag Module
Poor Connection Of Clockspring
Connector (See DIAGNOSTIC
TEST NO. 6)
7 (1) Flashes 7 TimesPoor Wiring Harness Ground (See
DIAGNOSTIC TEST NO. 8)
8Flashes 8 TimesPoor Ground Of Front Impact
Sensor (See DIAGNOSTIC TEST
NO. 8)
9Flashes 9 TimesOpen Circuit Between Diagnostic
Module and Front Impact Sensor
(See DIAGNOSTIC TEST NO. 3)
10Flashes 2 TimesPoor Ground Of All Front Impact
Sensors (See DIAGNOSTIC TSET
NO. 7)
(1)Code 7 Does not apply to 1990 Miata
1991 Mazda MX-5 Miata
AIR BAG RESTRAINT SYSTEM MAZDA 1990-91 AIR BAGS
Microsoft
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1 - 30 Amp (Pink) Headlights
2 - 30 Amp (Pink) Fuel Injection, Alternator
3 - 80 Amp (Black) Protection Of All Circuits
4 - 40 Amp (Green) Taillights, Shift Lock, Cruise Control, Horn, Stoplights, Hazard Warning Lights,
Interior Lights, Warning Buzzers, Radio/Cassette, Compact Disc Player, Clock
5 - Empty (1990); 60 Amp (Yellow) (1991-94) Anti-Lock Brake System
6 - 30 Amp (Pink) Cooling Fan
7 - 10 Amp (Red) Air Bag
8 - 20 Amp (Yellow) A/C Additional Fan
9 - 10 Amp (Red) Fuel Injection
10 - 30 Amp (Pink) Headlight Retractor
TRUNK MOUNTED FUSE PANEL IDENTIFICATION
1991 Mazda MX-5 Miata
FUSES & CIRCUIT BREAKERS Fuses & Circuit Breakers 1990-95 Mazda
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23 - Empty
24 - 10 Amp (Red) Interior Lights, Warning Buzzers, Radio/Cassette, Compact Disc Player, Clock
25 - 15 Amp (Blue) Radio/Cassette, Compact Disc Player, Clock, Cigarette Lighter
26 - Empty
27 - Empty
BATTERY SPECIFICATIONS
Vehicle is equipped with a special 9 9/16" x 4 3/4" x 7 3/8" 12-volt battery that is vented to outside of vehicle.
CAUTIONS & WARNINGS
SUPPLEMENTAL RESTRAINT SYSTEM (AIR BAG)
Modifications or improper maintenance, including incorrect removal and installation of the Supplemental
Restraint System (SRS), can adversely affect system performance. DO NOT cover, obstruct or change the
steering wheel horn pad in any way, as such action could cause improper function of the system. Use only plain
water when cleaning the horn pad. Solvents or cleaners could adversely affect the air bag cover and cause
improper deployment of the system.
AIR CONDITIONING SERVICING CAUTION: When battery is disconnected, vehicles equipped with computers may
lose memory data. When battery power is restored, driveability problems
may exist on some vehicles. These vehicles may require a relearn
procedure. See COMPUTER RELEARN PROCEDURES article in the
GENERAL INFORMATION Section.
NOTE: See the AIR BAGS article in the ACCESSORIES/SAFETY EQUIPMENT Section.
WARNING:To avoid injury from accidental air bag deployment, read and carefully
follow all warnings and service precautions. See appropriate AIR BAGS
article in ACCESSORIES/SAFETY EQUIPMENT.
CAUTION: Disconnect negative battery cable before servicing any air bag system,
steering column or passenger side dash component. After any repair, turn
ignition key to the ON position from passenger's side of vehicle in case of
accidental air bag inflation
CAUTION: Avoid breathing R-134a refrigerant and PAG lubricant vapors, exposure
may irritate eyes, nose and throat. To remove R-134a from system use R-
134a recycling equipment that meets SAE J2210 specifications. If
accidental system discharge occurs, ventilate work area before resuming
1991 Mazda MX-5 Miata
FUSES & CIRCUIT BREAKERS Fuses & Circuit Breakers 1990-95 Mazda
Microsoft
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Removal & Installation (MX-6 & 626)
Pry ornament cap from horn pad with wide-blade screwdriver. Remove steering wheel nut. Use a puller to
remove steering wheel. To install, reverse removal procedure.
Removal & Installation (Protege & 323)
Remove 2 horn pad screws from behind steering wheel. Remove horn pad. Remove steering wheel nut. Use a
puller to remove steering wheel. To install, reverse removal procedure.
COMBINATION SWITCH
Removal (Miata & RX7 Convertible)
See STEERING WHEEL & HORN PAD under REMOVAL & INSTALLATION. Remove steering wheel.
Remove column covers. Remove screws and remove combination switch with clockspring connector assembly.
Installation
1. Install combination switch and clockspring assembly. Before installing steering wheel, center
clockspring. To center clockspring, set front wheels straight ahead. Turn clockspring connector clockwise
until it stops. DO NOT force it.
2. Return connector 2 3/4 turns (counterclockwise). Rotate clockspring connector further (if necessary) to
align marks on connector and outer housing. See Fig. 1
.
3. Install steering wheel. Tighten steering wheel nut to specification. See TORQUE SPECIFICATIONS
TABLE at end of article. Install air bag module. See AIR BAG article in the ACCESSORIES/SAFETY
EQUIPMENT section.
1991 Mazda MX-5 Miata
STEERING COLUMN 1991 STEERING Mazda - Steering Columns
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