Airbag control unit with part number 96314931

What is the function of the airbag control unit 96314931?

The airbag control unit 96314931 is a central control module manufactured by Siemens for occupant protection systems in vehicles such as the Daewoo Matiz M100 and M150. It processes signals from crash sensors to precisely and rapidly deploy airbags and seatbelt pretensioners in the event of a collision.

As the “brain” of the passive safety system, it continuously monitors all connected components—from impact sensors mounted at the front and sides of the vehicle to individual airbag modules and seatbelt pretensioners. Any system malfunction is immediately detected and reported to the driver.

This control unit is also known under compatible part numbers 96314932, 96603736, and 96603738, which were installed in the same vehicle models and perform identical functions.

Why does the control unit 96314931 fail?

A failure of the control unit 96314931 is most commonly caused by stored crash data following an accident, which the system locks out for safety reasons. Other causes include electronic malfunctions due to moisture, electrical disturbances in the vehicle’s wiring harness, or the failure of internal components such as processors and memory chips.

After an airbag deployment, the unit stores a so‑called “crash lock” in its internal memory. This entry is permanent and prevents reuse until it is professionally reset through specialized repair procedures. In this state, the system automatically deactivates itself.

Electrical malfunctions are another frequent source of failure. Since the control unit is often installed in the footwell or beneath the seats, ingress of moisture can lead to corrosion and short circuits on the circuit board. Voltage fluctuations or mechanical vibrations may also damage sensitive components over time.

How do you recognize a defect in the control unit 96314931?

The clearest indication of a defect in the control unit 96314931 is a permanently illuminated or flashing airbag warning light on the instrument cluster after starting the engine. Often, the control unit can no longer be accessed by diagnostic equipment, or specific fault codes such as “internal ECU error” or “control unit defective” are read out.

The airbag warning light indicates that the entire restraint system is non‑functional. Consequently, in the event of a crash, there is no protection provided by airbags or seatbelt pretensioners, posing a significant safety risk.

During workshop diagnostics, the defect often manifests as a lack of communication: the diagnostic tool cannot establish a connection with the airbag control unit to read fault codes or retrieve sensor data.

When fault codes are retrieved, they frequently point directly to an internal issue. Messages like “side‑impact sensor error” or “internal control unit error” are typical for affected Daewoo Matiz models and signal the need for unit repair.

In which vehicles is the control unit 96314931 installed?

The Siemens airbag control unit with part number 96314931, along with its equivalent variants 96314932, 96603736, and 96603738, is specifically designed for certain Daewoo Matiz models. Airbag24 specializes in repairing these units for the affected vehicles.

At Airbag24, we repair this control unit for the following models:

Daewoo: Matiz M100 (1998–2000), Matiz M150 (2000–2005)

A repair restores the original control unit to full functionality and offers a cost‑effective alternative to expensive replacement purchases.

How is the repair of the control unit 96314931 carried out?

At Airbag24, repairs follow a professional, standardized process. Upon receipt of the removed control unit, a detailed diagnosis is performed to precisely identify the root cause of the fault. Subsequently, crash data is erased, and any defective electronic components are replaced. A final functional test ensures quality.

First, the fault memory is read to verify the reported issues. Before removing the unit, the vehicle battery should be disconnected for at least 10 minutes to ensure safety. In the Daewoo Matiz, the control unit is typically located in the footwell or beneath one of the front seats.

The actual repair focuses on two primary sources of failure: On the software side, stored crash data is reliably erased using specialized tools. On the hardware side, components damaged by moisture, short circuits, or vibrations are expertly replaced.

Following successful repair, each control unit undergoes comprehensive testing on a test bench to simulate and guarantee proper operation of all systems. We provide 2 years' statutory liability for defects on every repaired unit.