1997 MAZDA MX-5 display

DIAGNOSIS
SELF-DIAGNOSTIC SYSTEM
SAS unit will only display one code at a time. SAS unit will always display highest priority code first. After
repairing system, perform SYSTEM OPERATION CHECK
. If AIR BAG warning light is still flashing
during SYSTEM OPERATION CHECK, record code displayed. Repair system as necessary.
Retrieving & Clearing Codes
If codes are stored, AIR BAG warning light will flash or remain on when ignition is turned on. Codes are
automatically cleared when fault is corrected.
AIR BAG Warning Light Flashes
AIR BAG warning light indicates fault codes by flashing. Count the number of flashes between pauses to
determine code. See AIR BAG CODES
table. Codes are prioritized. If 2 or more faults are present, SAS unit
will display highest priority code first. After identifying code, go to appropriate code test.
AIR BAG Warning Light Remains On
Illumination of AIR BAG warning light continuously when ignition is turned on indicates a Code 0 (zero). See
AIR BAG CODES
table.
AIR BAG Warning Light Does Not Come On
Check for blown fuses, burned-out bulb, disconnected SAS unit, or open circuit between warning light and SAS
unit.
AIR BAG CODES
WARNING LIGHT DOES NOT COME ON WARNING:Follow air bag service precautions to prevent accidental air bag
deployment and personal injury. See SERVICE PRECAUTIONS
.
NOTE: If AIR BAG warning light does not come on and buzzer sounds when ignition is
turned on, check and repair warning light circuit first.
CodePossible Cause
0 (1) SAS unit
3Power Source Circuit
6Driver-Side Air Bag Module Circuit
7Passenger-Side Air Bag Module Circuit
(1)AIR BAG warning light remains on, indicating a Code 0.

1997 Mazda MX-5 Miata
AIR BAG RESTRAINT SYSTEM 1997 ACCESSORIES/SAFETY EQUIPMENT Mazda - Air Bag Restraint System
Microsoft
Sunday, July 05, 2009 1:40:47 PMPage 15 © 2005 Mitchell Repair Information Company, LLC.

Remove driver-side air bag module. See DRIVER-SIDE AIR BAG MODULE under REMOVAL &
INSTALLATION.
2. Inspect clockspring connectors for damage. If connectors are okay, go to next step. If connectors are
damaged, replace clockspring. Perform SYSTEM OPERATION CHECK
.
3. Connect Special Service Tool (49 0839 285) to terminal No. 3B and terminal No. 3C of clockspring. Set
SST resistance to 2 ohms. Connect clockspring connector. Connect negative battery cable. Turn ignition
switch to ON position and cheek for codes. If CODE 6 is displayed, go to next step. If CODE 6 is not
present, replace driver-side air bag module. Perform SYSTEM OPERATION CHECK
.
4. Turn ignition switch to LOCK position. Disconnect negative battery cable and wait for 1 minute.
Disconnect clockspring connector and inspect. If pins are ok go next step. If pins are damaged, replace
wiring harness from clockspring to SAS unit.
5. Connect Special Service Tool (49 0839 285) to terminal No. A and terminal No. B of clockspring
connector. Set SST resistance to 2 ohms. Connect clockspring connector and connect negative battery
cable. Turn ignition switch to ON position and cheek for codes. If CODE 6 is displayed, go to next step.
If CODE 6 is not present, replace clockspring. See CLOCKSPRING
under REMOVAL &
INSTALLATION. Perform SYSTEM OPERATION CHECK
.
6. Turn ignition switch to LOCK position. Disconnect negative battery cable. Wait for 1 minute. Remove
dashboard and heater unit. Disconnect SAS unit connector.
7. Check wiring harness between terminal No. O of SAS unit connector and between terminal No. A of
clockspring connector. Also check between terminal No. M of SAS unit connector and terminal No. B of
clockspring connector. Check 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 from clockspring to SAS unit. Perform SYSTEM OPERATION CHECK
.
DTC 7 - PASSENGER-SIDE AIR BAG MODULE
1. Disable air bag system. See DISABLING & ACTIVATING AIR BAG SYSTEM
. Inspect passenger-
side air bag module connectors for damage. If connectors are okay, go to next step. If connectors are
damaged, replace wiring harness from passenger-side air bag module to SAS unit. Perform SYSTEM
OPERATION CHECK .
2. Connect Special Service Tool (49 0839 285) to terminal No A and terminal No. B of passenger-side air
bag module connector. Set Special Service Tool resistance to 2 ohms. Connect clockspring connector.
Connect negative battery cable. Turn ignition switch to ON position and check for codes. If DTC 7 is
displayed, go to next step. If CODE 7 is not present replace passenger-side air bag module. See
PASSENGER
-SIDE AIR BAG MODULE under REMOVAL & INSTALLATION. Perform SYSTEM
OPERATION CHECK .
3. Turn ignition switch to LOCK position. Disconnect negative battery cable and wait 1 minute. Disconnect
clocksprin
g connector. Remove dashboard and heater unit. NOTE: For connector terminal identification, see WIRING DIAGRAM
.
NOTE: When resistance is detected between terminals l-K of SAS unit is NOT 2 ohms
and/or there is no continuity between terminal No. E of SAS unit and ground,
DTC 7 will set

1997 Mazda MX-5 Miata
AIR BAG RESTRAINT SYSTEM 1997 ACCESSORIES/SAFETY EQUIPMENT Mazda - Air Bag Restraint System
Microsoft
Sunday, July 05, 2009 1:40:48 PMPage 18 © 2005 Mitchell Repair Information Company, LLC.

(DLC). Set NGS Adapter (49-T088-003) to ABS. Select VEHICLE & ENGINE SELECTION, then select
vehicle model, engine type and model year. Select DIAGNOSTIC DATA LINK. Select ABS-ANTI
LOCK BRAKE MODULE.
2. Select DIAGNOSTIC TEST MODE and note any codes displayed. See DIAGNOSTIC TROUBLE
CODE DESCRIPTION table. Perform appropriate test. See DIAGNOSTIC TROUBLE CODE (DTC)
TESTING . Clear codes after servicing. See CLEARING CODES .
DIAGNOSTIC TROUBLE CODE DESCRIPTION
DTCProbable Cause
05 Stoplight Switch Wiring Harness
11 Right Front Wheel Speed Sensor/Sensor Rotor
12 Left Front Wheel Speed Sensor/Sensor Rotor
13 Right Rear Wheel Speed Sensor/Sensor Rotor
14 Left Rear Wheel Speed Sensor/Sensor Rotor
15 Wheel Speed Sensor/Sensor Rotor
22 (1) Right Front Solenoid Valve (AV)
23 (2) Right Front Solenoid Valve (EV)
24 (1) Left Front Solenoid Valve (AV)
25 (2) Left Front Solenoid Valve (EV)
26 (1) Rear Solenoid Valve (AV)
27 (2) Rear Solenoid Valve (EV)
51 Valve Relay
53 Motor Relay/Pump Motor
61 ABS Control Module
(1)Pressure retention valve.
(2)Pressure reduction valve.

1997 Mazda MX-5 Miata
ANTI-LOCK BRAKE SYSTEM 1997 BRAKES Mazda - Anti-Lock
Microsoft
Sunday, July 05, 2009 1:48:48 PMPage 6 © 2005 Mitchell Repair Information Company, LLC.

DTC 05: STOPLIGHT SWITCH WIRING HARNESS
1. Check stoplight switch wiring harness for open or short to ground between stoplight switch and ABS
control module. See WIRING DIAGRAMS
. Repair as necessary. If wiring harness is okay, go to next
step.
2. Clear DTCs. See CLEARING CODES under DIAGNOSIS & TESTING. Recheck for DTCs. If DTC 05
is displayed, replace ABS control module. If DTC 05 is not displayed, a temporary poor contact in wiring
may have occurred and ABS is now functioning properly.
DTCS 11, 12, 13 & 14: WHEEL SPEED SENSOR, SENSOR ROTOR, HYDRAULIC UNIT OR
WIRING HARNESS
1. Check ABS control module connector for poor connection. See COMPONENT LOCATIONS
. Repair
as necessary. If connector is okay, go to next step.
2. Check wiring harness for open or short to ground between suspect wheel speed sensor and ABS control
module. See WIRING DIAGRAMS
. Repair as necessary. If wiring harness is okay, go to next step.
3. Check suspect wheel speed sensor. See WHEEL SPEED SENSORS under COMPONENT TESTING
.
Replace as necessary. If wheel speed sensor is okay, go to next step.
4. Inspect wheel speed sensor rotor for damage or missing teeth. If sensor rotor is damaged or has missing
teeth, replace sensor rotor. If sensor rotor is okay, go to next step.
5. Inspect brakeline for damage. If brakeline is damaged, replace brakeline. If brakeline is okay, go to next
step.
6. Check hydraulic unit. See HYDRAULIC UNIT under COMPONENT TESTING
. Replace as
necessary. If hydraulic unit is okay, go to next step.
7. Clear DTCs. See CLEARING CODES
under DIAGNOSIS & TESTING. Recheck for DTCs after
driving vehicle from a stop to faster than 6.2 MPH. If DTC 11, 12, 13 or 14 is displayed, replace ABS
control module. If DTC 11, 12, 13 or 14 is not displayed, a temporary poor contact in wiring may have
occurred and ABS is now functioning properly.
DTC 15: WHEEL SPEED SENSOR, SENSOR ROTOR, HYDRAULIC UNIT OR WIRING HARNESS
If DTC 15 is displayed, perform DTCS 11
, 12, 13 & 14: WHEEL SPEED SENSOR, SENSOR ROTOR,
HYDRAULIC UNIT OR WIRING HARNESS test.
DTCS 22, 23, 24, 25, 26 & 27: SOLENOID VALVE OR WIRING HARNESS
1. Check ABS control module connector for poor connection. See COMPONENT LOCATIONS
. Repair
as necessary. If connection is okay, go to next step.
2. Check suspect solenoid valve with valve relay installed. See SOLENOID VALVES
under
COMPONENT TESTING. Replace as necessary. If solenoid valve with valve relay installed is okay, go
to next step.
3. Check suspect solenoid valve with valve relay removed. See SOLENOID VALVES
under
COMPONENT TESTING. Replace solenoid valve as necessary. If solenoid valve with valve relay
removed is oka
y, go to next step.

1997 Mazda MX-5 Miata
ANTI-LOCK BRAKE SYSTEM 1997 BRAKES Mazda - Anti-Lock
Microsoft
Sunday, July 05, 2009 1:48:48 PMPage 8 © 2005 Mitchell Repair Information Company, LLC.

4. Check wiring harness for open or short to ground between hydraulic unit and ABS control module. See
WIRING DIAGRAMS
. Repair as necessary. If wiring harness is okay, go to next step.
5. Clear DTCs. See CLEARING CODES
under DIAGNOSIS & TESTING. Recheck for DTCs. If DTC
22, 23, 24, 25, 26 or 27 is displayed, replace ABS control module. If DTC 22, 23, 24, 25, 26 or 27 is not
displayed, a temporary poor contact in wiring may have occurred and ABS is now functioning properly.
DTC 51: VALVE RELAY OR WIRING HARNESS
1. Check BTN fuse. Replace as necessary. If BTN or ABS fuse is okay, go to next step.
2. Check valve relay. See VALVE RELAY
under COMPONENT TESTING. Replace as necessary. If
valve relay is okay, check wiring harness for open or short to ground between valve relay and ABS
control module. See WIRING DIAGRAMS
. Repair as necessary. If wiring harness is okay, go to next
step.
3. Clear DTCs. See CLEARING CODES
under DIAGNOSIS & TESTING. Recheck for DTCs. If DTC 51
is displayed, replace ABS control module. If DTC 51 is not displayed, a temporary poor contact in wiring
may have occurred and ABS is now functioning properly.
DTC 53: PUMP MOTOR, MOTOR RELAY OR WIRING HARNESS
1. Turn ignition off and check if pump motor continues to operate. If pump motor continues operating after
ignition is off, replace motor relay. If pump motor does not continue to operate after ignition is off, go to
next step.
2. Check ABS fuse. Replace as necessary. If ABS fuse is okay, go to next step.
3. Check motor relay. See MOTOR RELAY
under COMPONENT TESTING. Replace as necessary. If
motor relay is okay, check wiring harness for open or short to ground between motor relay and ABS
control module. See WIRING DIAGRAMS
. Repair as necessary. If wiring harness is okay, go to next
step.
4. Check pump motor. See PUMP MOTOR
under COMPONENT TESTING. Replace as necessary. If
pump motor is okay, check wiring harness for open or short to ground between hydraulic unit and ABS
control module. Repair as necessary. If wiring harness is okay, go to next step.
5. Clear DTCs. See CLEARING CODES
under DIAGNOSIS & TESTING. Recheck for DTCs. If DTC 53
is displayed, replace ABS control module. If DTC 53 is not displayed, a temporary poor contact in wiring
may have occurred and ABS is now functioning properly.
DTC 61: ABS CONTROL MODULE
1. Check ABS control module connector for poor connection. See COMPONENT LOCATIONS
. Repair
as necessary. If connector is okay, go to next step.
2. Clear DTCs. See CLEARING CODES under DIAGNOSIS & TESTING. Recheck for DTCs. If DTC 61
is displayed, replace ABS control module. If DTC 61 is not displayed, a temporary poor contact in wiring
may have occurred and ABS is now functioning properly.
COMPONENT TESTING

1997 Mazda MX-5 Miata
ANTI-LOCK BRAKE SYSTEM 1997 BRAKES Mazda - Anti-Lock
Microsoft
Sunday, July 05, 2009 1:48:48 PMPage 9 © 2005 Mitchell Repair Information Company, LLC.

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
Microsoft
Sunday, July 05, 2009 1:55:15 PMPage 3 © 2005 Mitchell Repair Information Company, LLC.

REPLACING BLOWN FUSES
BRAKE PAD WEAR INDICATOR
CATALYTIC CONVERTER
ELECTROSTATIC DISCHARGE SENSITIVE (ESD) PARTS
ENGINE OIL
FUEL SYSTEM SERVICE WARNING: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 GENERAL
INFORMATION section.
CAUTION: Before replacing a blown fuse, remove ignition key, turn off all lights and
accessories to avoid damaging the electrical system. Be sure to use fuse
with the correct indicated amperage rating. The use of an incorrect
amperage rating fuse may result in a dangerous electrical system
overload.
CAUTION: Indicator will cause a squealing or scraping noise, warning that brake
pads need replacement.
CAUTION: Continued operation of vehicle with a severe malfunction could cause
converter to overheat, resulting in possible damage to converter and
vehicle.
CAUTION: Any modification to the exhaust system on turbo models, which reduces
exhaust backpressure, will lead to lean fuel mixtures and excessive spark
advance. This could cause serious engine damage.
WARNING:Many solid state electrical components can be damaged by static
electricity (ESD). Some will display a warning label, but many will not.
Discharge personal static electricity by touching a metal ground point on
the vehicle prior to servicing any ESD sensitive component.
CAUTION: Never use non-detergent or straight mineral oil.

1997 Mazda MX-5 Miata
MAINTENANCE INFORMATION 1997 MAINTENANCE Mazda Maintenance Information
Microsoft
Sunday, July 05, 2009 1:41:19 PMPage 6 © 2005 Mitchell Repair Information Company, LLC.