DTC B1128-11, B1128-12, B1128-13, B1128-19 Or B1128-1A: Driver-Side Curtain Air Bag Module Circuit (Airbag) (Us): Outline
WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.
DTC B1128:11, B1128:12, B1128:13, B1128:19 OR B1128:1A DETECTION CONDITION AND POSSIBLE CAUSE
| 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
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| Fail-safe |
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| Possible cause |
- Driver-side curtain air bag module connector malfunction
- Open circuit in driver-side curtain air bag module deployment signal circuit
- Short circuit to body ground in driver-side curtain air bag module deployment signal circuit
- Short circuit to power supply in driver-side curtain air bag module deployment signal circuit
- Short circuit to each other in driver-side curtain air bag module deployment signal circuit
- Short circuit to other air bag module circuits in driver-side curtain air bag module deployment signal circuit
- Driver-side curtain air bag module malfunction
- SAS control module malfunction
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 Courtesy of MAZDA MOTORS CORP.
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