Mazda 626 Station Wagon, Workshop Manual

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ON-BOARD DIAGNOSTIC
STEP INSPECTION ACTION
1
2 INSPECT WIRING HARNESS BETWEEN
PASSENGER-SIDE SIDE AIR BAG SENSOR
AND SAS UNIT
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 side
air bag module connectors.
• Remove B-pillar lower trims.
• Disconnect driver and passenger-side pre-
tensioner seat belt connectors.
• Remove side walls.
• Disconnect all SAS unit connectors.
• Disconnect passenger-side side air bag
sensor connector.
• Inspect following wiring harness between
SAS unit and passenger-side side air bag
sensor terminals (harness side) for short to
ground, short to power supply, and open
circuit:
— 1L and A
— 1J and B
— 1H and C
— 1G and D
• Are wiring harnesses okay?
Yes Present malfunction diagnosis:
• Go to next step.
Past malfunction diagnosis:
• Replace SAS unit.
(See T-59 SAS UNIT REMOVAL/INSTALLATION)
No Replace wiring harnesses.
3 INSPECT PASSENGER-SIDE SIDE AIR BAG
SENSOR
• Measure resistance between
passenger-side side air bag sensor
terminals C and D.
• Is resistance approximately 1 kQ?
Yes Replace SAS unit, then go to next step.
(See T-59 SAS UNIT REMOVAL/INSTALLATION)
No Replace passenger-side side air bag sensor.
(See T-58 SIDE AIR BAG SENSOR
REMOVAL/INSTALLATION)
T -9 0