What is a Dacia 1309 I airbag control unit?
The Dacia 1309 I airbag control unit is the central safety unit in the vehicle. It activates all occupant restraint systems in the event of an accident. It precisely monitors sensors, stores crash data, and ensures the immediate and proper operation of all airbag modules and seatbelt pretensioners for maximum safety.
This electronic module is responsible for controlling and monitoring the entire passive safety system.
It has a microcontroller with real-time diagnostic functions and communicates with other control units, such as ABS or ESP, via the vehicle CAN bus.
Safety features include self-diagnosis for error detection and the storage of error codes that only activate the airbags if valid accident parameters are met.
Why is the Dacia 1309 I airbag control unit defective?
A Dacia 1309 I airbag control unit is often defective because it permanently stores crash data after an accident, or internal components can fail due to aging, moisture, and short circuits. A repair of the Dacia 1309 I airbag control unit is then essential to continue protecting vehicle occupants and clearing the airbag warning light.
Common causes of a defect include the storage of crash data after an accident, which requires a reset.
Internal electronic errors, moisture ingress, or physical damage to the connector can also lead to failure and require repair.
Such a defective system is usually signaled by an illuminated airbag warning light in the dashboard.
To ensure safety, quick diagnosis and repair of the Dacia 1309 I airbag control unit is essential.
Common error codes for Dacia 1309 I airbag control unit repair
During Dacia 1309 I airbag control unit repairs, generic B-codes often occur, as model-specific error codes for the Dacia 1309 I are only available in OEM databases. These generic codes indicate internal errors in the control unit or its peripherals and are essential for diagnosis.
Although there are no exact model-specific error codes for the Dacia 1309 I airbag control unit, typical OBD-II B codes serve as a reference.
These codes help workshops diagnose and precisely fix errors that require a Dacia 1309 I airbag control unit repair.
- B0001 → PCM Discrete Input Speed Signal Error → Incorrect or missing speed signal from the engine control unit.
- B0004 → PCM Discrete Input Speed Signal Not Present → Speed signal not recognized by PCM.
- B0005 → In Park Switch Circuit Malfunction → Malfunction in the parking switch circuit.
- B0071 → Roof Rail Module-Right Deployment Loop Circuit → Defect in the right roof airbag deployment loop.
- B0073 → Supplemental Deployment Loop #1 Resistance Low → Resistance in supplemental deployment loop #1 is too low.
- B0074 → Supplemental Deployment Loop #1 Open → Open circuit in trip circuit #1.
- B0075 → Supplemental Deployment Loop #1 Short to Ground/Voltage Out of Range → Short circuit or voltage fault in trip circuit #1.
- B0077 → Left Front/Driver Side Impact Sensor (SIS) Malfunction → Left front impact sensor malfunction.
- B0078 → Right Front/Passenger SIS Malfunction → Right front impact sensor malfunction.
- B0079 → Incorrect Left Front/Driver SIS Installed → Incorrect left front impact sensor installed.
- B0080 → Discard Left Front/Driver SIS → Left front impact sensor is faulty or unusable.
- B0081 → Incorrect Right Front/Passenger SIS Installed → Incorrect right front impact sensor installed.
- B0082 → Discard Right Front/Passenger SIS → Right front impact sensor is faulty or unusable.
- B0086 → Supplemental Deployment Loop #2 Resistance Low → Resistance in supplemental deployment loop #2 is too low.
- B0087 → Supplemental Deployment Loop #2 Open → Open circuit in trip circuit #2.
- B0088 → Supplemental Deployment Loop #2 Short to Ground/Voltage Out of Range → Short circuit or voltage fault in trip circuit #2.
- B0090 → Active switch voltage out of range → Active switch voltage out of range.
- B0091 → Active switch: wrong state → Active switch in the wrong state.
- B1171 → Internal SDM (Sensing and Diagnostic Module) Failure → Internal defect of the airbag control unit itself.
What part numbers are available for the Dacia 1309 I airbag control unit repair?
For the Dacia 1309 I airbag control unit repair, there are no publicly verified, exact OEM part numbers specifically for this model. Determining the part requires consulting official Renault/Dacia spare parts catalogs or direct contact with specialist workshops that have specific data on the Dacia 1309 I.
Based on the research, no direct, verified OEM part numbers could be found for the Dacia 1309 I airbag control unit.
Although suppliers such as Bosch, Continental and Autoliv manufacture airbag control units, the specific numbers for the Dacia 1309 I are not publicly documented.
For a precise Dacia 1309 I airbag control unit repair and part replacement, a VIN-based query in the official Renault/Dacia parts catalog is essential.
This is the only way to ensure the compatibility of the replacement part and avoid incorrect installation.