DAB (Driver Air Bag): Meaning, Symptoms, and Diagnosis
DAB stands for Driver Air Bag. It is the main airbag installed on the driver side and is part of the SRS (Supplemental Restraint System). Its purpose is to protect the driver's head and chest during a severe frontal collision.
What Is a Driver Air Bag (DAB)?
The Driver Air Bag is located inside the steering wheel. When the SRS control module detects a serious collision, it activates the airbag inflator to deploy the airbag and reduce the impact between the driver and the steering wheel.
Common Symptoms of DAB Fault
- SRS or Airbag warning light stays ON
- Airbag warning message appears on the dashboard
- Stored B-code diagnostic trouble codes
- Driver airbag system disabled
- Fault communication with SRS control module
Common Causes of DAB Failure
- Open circuit in driver airbag wiring
- Damaged clock spring (steering wheel spiral cable)
- Loose or damaged airbag connector
- High resistance in deployment circuit
- Faulty SRS control module
- Previous airbag deployment
How to Diagnose DAB Problems?
Driver Air Bag faults are diagnosed using an SRS-compatible diagnostic scanner. The scan tool communicates with the SRS module and identifies the affected airbag circuit.
Crash Sensors
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SRS Control Module
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Clock Spring
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Driver Air Bag Circuit
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Diagnostic Scanner
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Fault Code Identification
Important Note About Abbreviations
Automotive abbreviations may differ between manufacturers. DAB usually means Driver Air Bag, but diagnostic systems can display different names depending on vehicle model. Always confirm the meaning using a professional scan tool or manufacturer service information.
Safety Warning
Driver airbags contain explosive inflators. Never test the airbag circuit by applying direct electrical power or using incorrect testing methods. Always follow proper SRS safety procedures.
FAQ
Where is the DAB located?
The Driver Air Bag is installed inside the steering wheel.
Can a DAB fault cause the airbag light to turn on?
Yes. Any problem in the driver airbag circuit can activate the SRS warning light.
What component often causes DAB faults?
The clock spring is a common cause because it allows electrical connection while the steering wheel rotates.