Mazda 626 Station Wagon, Workshop Manual

Page: 519 / 577

ON-BOARD DIAGNOSTIC
STEP INSPECTION
ACTION
2 INSPECT FOR CONTINUITY BETWEEN
OCCUPANCY 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.
Yes Go to next step.
• 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 trim.
• Disconnect driver and passerger-side
pre-tensioner seat belt connector.
• Remove side walls.
• Disconnect all SAS unit connectors.
• Disconnect occupancy sensor connector.
• Is there continuity between terminal B of
occupancy sensor and terminal 3H of SAS
unit?
No Replace wiring harness.
3 INSPECT FOR CONTINUITY BETWEEN
OCCUPANCY SENSOR AND GROUND
Yes Go to next step.
• Is there continuity between terminal C of
occupancy sensor connector and ground?
No
Replace wiring harness.
4 INSPECT FOR CONTINUITY BETWEEN
METER 10 A FUSE AND OCCUPANCY
SENSOR
• Connect negative battery cable.
• Measure voltage at terminal A of occupancy
sensor connector.
• Is voltage more than 9 V?
Yes Present malfunction diagnosis:
Turn ignition switch to LOCK position and disconnect
negative battery cable. Then go to next step.
Past malfunction diagnosis:
Troubleshooting completed.
No Replace wiring harness.
5 VERIFY WHETHER MALFUNCTION IS IN
OCCUPANCY SENSOR OR SAS UNIT
• Connect all SAS unit connectors.
• Connect clock spring connector.
• Connect passenger-side air bag module
connector.
• Connect passenger-side side bag sensor
connector. (Vehicle with side air bag)
• Connect driver and passenger-side
pre-tensioner seat belt connectors.
• Short terminal B of occupancy sensor
connector to ground.
• Connect negative battery cable.
• Turn ignition switch to ON position.
• Is DTC 45 indicated?
Yes Replace SAS unit.
(See T-59 SAS UNIT REMOVAL/INSTALLATION)
No Replace seat cushion.
(See Section S)
T -9 7