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Home >> Mazda >> 2015 >> 3 SV, Standard Trans >> Repair and Diagnosis (Single Page) >> Restraints >> Air Bag, SRS >> On-Board Diagnostic - Airbag System (Two-Step Deployment Control System) >> DTC B1128 11/B1128 12/B1128 13/B1128 19/B1128 1A: Driver-Side Curtain Air Bag Module >> Notes
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DTC B1128 11/B1128 12/B1128 13/B1128 19/B1128 1A: Driver-Side Curtain Air Bag Module: Notes

DTC B1127 11/B1127 12/B1127 13/B1127 19/B1127 1A - DETECTION CONDITIONS AND POSSIBLE CAUSES (TWO-STEP DEPLOYMENT CONTROL SYSTEM)

System malfunction location 
  • B1128:11: Driver-side curtain air bag module circuit short to body ground 
  • B1128:12: Driver-side curtain air bag module circuit short to power supply 
  • B1128:13: Driver-side curtain air bag module circuit open circuit or resistance high 
  • B1128:19: Short circuit to driver-side curtain air bag module and other air bag module circuits 
  • B1128:1A: Driver-side curtain air bag module circuit resistance low 
Detection condition 
WARNING:
  • Detection conditions are for understanding the DTC outline before performing an inspection. Performing an inspection according to only the detection conditions may cause injury due to an operating error, or damage the system. When performing an inspection, always follow the inspection procedure.
  • Resistance other than 0.81-6.42 ohms  detected in driver-side curtain air bag module circuit
  • Wiring harness between the driver-side curtain air bag module and SAS control module has a malfunction
Fail-safe function  Not applicable
Possible cause 
  • Driver-side curtain air bag module connector malfunction
  • Short circuit to power supply or body ground in the wiring harness between the driver-side curtain air bag module and SAS control module
  • Open circuit in the wiring harness between the driver-side curtain air bag module and SAS control module
  • Driver-side curtain air bag module malfunction
  • SAS control module malfunction
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