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Diagnostic procedure

WARNING: This page is about a different car, the 2005 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
DTC B1013 DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 INSPECT SEAT WEIGHT SENSOR 
Properly install the passenger-side front seat.
Inspect the seat weight sensor. (See SEAT WEIGHT SENSOR CALIBRATION .) Is the seat weight sensor normal?		 Yes Replace the SAS control module (See: SAS CONTROL MODULE REMOVAL/INSTALLATION .)
No Go to the next step.
2 INSPECT PASSENGER-SIDE FRONT SEAT 
Turn the ignition switch to the LOCK position. Disconnect the negative battery cable and wait for 1 min or more. 
Remove the passenger-side front seat and visually inspect for the following:
  • Seat under-bracket deformation
  • Seat frame deformation
  • Seat weight sensor deformation
  • Foreign objects stuck in seat

Are any of the parts deformed or are any foreign objects stuck in the seat?		 Yes Replace any deformed parts or remove any foreign objects.
  • After replacement, perform seat weight sensor calibration and reperform the DTC inspection. If the DTC is displayed, go the next step. (See SEAT WEIGHT SENSOR CALIBRATION .)
No Go to the next step.
3 INSPECT FLOOR 
Visually inspect the installation parts of the passenger-side front seat for the following:
  • Abnormal floor deformation
  • Installation hole of passenger-side front seat is improperly positioned

Is the floor normal?		 Yes Go to the next step.
No Repair floor deformation.
  • After repair, perform seat weight sensor calibration and reperform the DTC inspection. If the DTC is displayed even though the floor has been repaired, go the next step. (See SEAT WEIGHT SENSOR CALIBRATION .)
4 INSPECT SEAT WEIGHT SENSOR CONTROL MODULE 
Replace the seat weight sensor.
After replacement, perform seat weight sensor calibration. (See SEAT WEIGHT SENSOR CALIBRATION .)
Reperform the DTC inspection.
Is DTC B1013 indicated?		 Yes Replace the seat weight sensor control module. (See SAS CONTROL MODULE REMOVAL/INSTALLATION .)
  • After replacement, perform seat weight sensor calibration and reperform the DTC inspection. If the DTC is displayed even though the seat weight sensor control module has been replaced, replace the SAS control module. (See SAS CONTROL MODULE REMOVAL/INSTALLATION .)
No DTC troubleshooting completed.
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