Mazda MX-5 Miata (1997+). Manual - part 5

5. Check continuity between terminal No. Q and ground. If continuity exists, replace or repair wiring

harness between instrument cluster and SAS unit. If no continuity exists, replace SAS unit. See SAS
UNIT under REMOVAL & INSTALLATION.

6. Activate air bag system and perform SYSTEM OPERATION CHECK . Check that AIR BAG warning

light is operating properly. If not, reconfirm malfunction symptoms.

DTC 0 - SAS UNIT

1. Disable system. See DISABLING & ACTIVATING AIR BAG SYSTEM . Remove dashboard.

Remove heater unit. Check if SAS unit connector is securely connected. If not, reconnect connector and
go next step. If ok, go to next step.

2. Disconnect SAS unit connector and check for continuity between terminal No. V and terminal No. Y of

SAS unit connector. If there is continuity, replace SAS unit. If there is no continuity, replace wiring
harness. Perform

SYSTEM OPERATION CHECK

DTC 3 - BATTERY

1. Check that battery voltage is at least 8 volts. If not, check battery and/or charging system. Turn ignition

on and check voltage at joint connector terminals A or E (X-33).

2. If voltage is over 8 volts, replace SAS unit. See SAS UNIT under REMOVAL & INSTALLATION. If

voltage is not over 8 volts, replace wiring harness from battery to fuse box. Perform SYSTEM
OPERATION CHECK .

DTC 6 - DRIVER-SIDE AIR BAG MODULE

1. Disable air bag system. See procedures under DISABLING & ACTIVATING AIR BAG SYSTEM .

NOTE:

When air bag warning light remains on, it can indicate a DTC 0 caused by no
continuity between terminal No. V and terminal No. Y of SAS unit This can be
due to a damaged SAS unit, an open or short circuit in wiring harness or poor
connections.

NOTE:

For connector terminal identification, see WIRING DIAGRAM .

NOTE:

When voltage supplied to SAS unit is less than 1 volt due to weak battery, open
or short in wiring harness, poor connection of connector or damaged SAS unit,
DTC 3 will set

NOTE:

For connector terminal identification, see WIRING DIAGRAM .

NOTE:

When resistance Is detected between terminals M-O of SAS unit is NOT 2 ohms,
DTC 6 will set.

NOTE:

For connector terminal identification, see WIRING DIAGRAM .

1997 Mazda MX-5 Miata

AIR BAG RESTRAINT SYSTEM 1997 ACCESSORIES/SAFETY EQUIPMENT Mazda - Air Bag Restraint System

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

clockspring 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

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

WIRING DIAGRAM

Application

Ft. Lbs. (N.m)

Passenger-Side Air Bag Module Retaining Bolts

13-20 (18-27)

Steering Wheel Nut

29-36 (39-49)

INCH Lbs. (N.m)

Driver-Side Air Bag Module Retaining Nuts

35-52 (4.0-5.8)

SAS Unit Retaining Nuts

61-86 (6.7-9.8)

1997 Mazda MX-5 Miata

AIR BAG RESTRAINT SYSTEM 1997 ACCESSORIES/SAFETY EQUIPMENT Mazda - Air Bag Restraint System

1997 Mazda MX-5 Miata

AIR BAG RESTRAINT SYSTEM 1997 ACCESSORIES/SAFETY EQUIPMENT Mazda - Air Bag Restraint System

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