Diagnostic Procedure

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Step	Inspection		Action
1	INSPECT SEAT WEIGHT SENSOR CONTROL MODULE CONNECTOR WARNING: Handling the component parts improperly can accidentally operate (deploy) the air bag module, which may seriously injure you. Read the service warnings/cautions and the Service Information before handling the air bag system components. (See AIR BAG SYSTEM SERVICE WARNINGS .) (See AIR BAG SYSTEM SERVICE CAUTIONS .) Switch the ignition to off Disconnect the negative battery cable and wait for 1 min or more . Disconnect the seat weight sensor control module connector Is there any malfunction of the seat weight sensor control module connector?	Yes	Go to the next step.
1		No	Repair or replace the wiring harness. After replacement, reperform the DTC inspection and verify that no DTCs are displayed.
2	INSPECT SEAT WEIGHT SENSOR CONTROL MODULE COMMUNICATION CIRCUIT FOR OPEN CIRCUIT Disconnect the SAS control module connector. Inspect for continuity between SAS control module connector terminal 2N and seat weight sensor control module connector terminal 3D Is there continuity?	Yes	Go to the next step
2		No	Repair the related wiring harness.
3	INSPECT SEAT WEIGHT SENSOR CONTROL MODULE POWER SUPPLY CIRCUIT Disconnect the SAS control module connector Connect the negative battery cable Switch the ignition to ON Measure the voltage of seat weight sensor control module connector terminals 3A Is the voltage measured?	Yes	Repair the related wiring harness.
3		No	Go to the next step.
4	INSPECT WIRING HARNESS BETWEEN SEAT WEIGHT SENSOR CONTROL MODULE AND BODY GROUND Switch the ignition to off Disconnect the negative battery cable and wait 1 min or more Inspect for continuity between seat weight sensor control module connector terminal 3B and body ground Is there continuity?	Yes	Repair the related wiring harness
4		No	Go to the next step.
5	PERFORM SAS CONTROL MODULE DTC INSPECTION Reconnect the disconnected connectors Connect the negative battery cable Clear DTCs using the M-MDS (See CLEARING DTC .) Verify DTCs using the M-MDS (See DTC INSPECTION .) Are DTCs B00A0:81, B00A0:87 displayed?	Yes	Replace the seat weight sensor control module (See SEAT WEIGHT SENSOR CONTROL MODULE REMOVAL/INSTALLATION .)
5		No	DTC troubleshooting completed.
6	VERIFY TROUBLESHOOTING COMPLETED Clear DTCs using the M-MDS (See CLEARING DTC .) Verify DTCs using the M-MDS (See DTC INSPECTION .) Are DTCs B00A0:81, B00A0:87 displayed?	Yes	Replace the SAS control module (See SAS CONTROL MODULE REMOVAL/INSTALLATION .)
6		No	DTC troubleshooting completed