Mazda 626 Station Wagon, Workshop Manual, Page: 501 / 577

ON-BOARD DIAGNOSTIC
STEP INSPECTION
ACTION
5 VERIFY WHETHER SAS UNIT IS
MALFUNCTIONING OR NOT
• Turn ignition switch to LOCK position.
• Disconnect negative battery cable and wait
for more than 1 minute.
• Connect driver-side side air bag sensor
connector.
• Connect negative battery cable.
• Turn ignition switch to ON position.
• Is DTC 22 indicated?
Yes Replace SAS unit.
(See T-59 SAS UNIT REMOVAL/INSTALLATION)
No Troubleshooting completed.
6 VERIFY THAT SAS UNIT CONNECTOR
TERMINAL 2AA IS GROUNDED
Warning
• Handling air bag system components
improperly can accidentally deploy
air bag modules and pre-tensioner
seat belts, which may seriously injure
you. Read AIR BAG SYSTEM
SERVICE WARNINGS before handling
air bag system components. See
T-56 SERVICE WARNINGS
• Turn ignition switch to LOCK position.
• Disconnect negative battery cable and wait
for more than 1 minute.
• Remove clock spring.
(See Section T)
• Remove glove compartment.
• Disconnect passenger-side air bag module
connector.
• Disconnect driver and passenger-side pre-
tensioner seat belt connectors.
• Remove B-pillar lower trims.
• Remove side walls.
• Disconnect all SAS unit connectors.
• Inspect wiring harness between SAS unit
connector terminal 2AA and ground for
following.
— Short to power supply
— Open circuit
• Is wiring harness okay?
Yes Present malfunction diagnosis:
• Replace SAS unit.
(See T-59 SAS UNIT REMOVAL/INSTALLATION)
Past malfunction diagnosis:
• Troubleshooting completed.
No Replace wiring harness.
T -7 9