Airbag control unit with part number 285001316

What is the function of the airbag control unit 285001316?

The airbag control unit with part number 285001316 is the central control module for the passive safety system in vehicles such as the Nissan Almera N16 and Sunny N16. It analyzes data from the acceleration sensors to precisely deploy the airbags and seatbelt pretensioners at the right moment in the event of a crash.

This component is critical for occupant safety. It continuously monitors all connected sensors and actuators of the restraint system. In case of a malfunction or after deployment, the unit stores corresponding fault codes or so‑called crash data, which may result in deactivation of the system until professional repair is performed.

Why does the control unit 285001316 fail?

The most common cause of failure for control unit 285001316 is the storage of crash data following an accident. Other defects arise from internal electronic faults, indicated by error codes such as B1000, B1058, or B1059 (control unit defective), requiring component‑level repair.

After a collision—even if the airbags did not deploy—the control unit often becomes internally locked. This lock is a manufacturer‑imposed safety feature that prevents further use without prior inspection and reset. Clearing this crash data is an essential part of the repair process.

In addition, age‑related defects in electronic components on the circuit board—such as processors or memory chips—can also lead to malfunctions. These hardware issues are frequently responsible for communication problems with diagnostic equipment or for permanently stored errors that cannot be cleared.

How can you recognize a defect in control unit 285001316?

A defect in control unit 285001316 primarily manifests as a constantly illuminated or rhythmically flashing airbag warning light on the dashboard. Often, communication between a diagnostic tool and the control unit is also lost, preventing the reading or clearing of fault codes.

Another clear indication is the presence of fault codes in the fault memory, signaling an internal malfunction. Messages such as “Internal Error” or specific codes like B1000, B1058, and B1059 are typical signs of a defect associated with this part number.

In some cases, specific symptoms may appear—for example, an indication that there is no connection to the side airbag, even though the wiring and the airbag itself are functioning properly. This suggests a processing error within the control unit.

In which vehicles is control unit 285001316 installed?

The airbag control unit with part number 285001316 is primarily used in various Nissan models. Repairing this specific component is crucial for the Almera N16 and Sunny N16 series to restore full functionality of the safety system.

At Airbag24, we repair part number 285001316 for the following models:

Nissan Almera N16 (2000–2002)

Nissan Almera N16 Facelift (2002–2006)

Nissan Sunny N16

How is control unit 285001316 professionally repaired?

Repair at Airbag24 begins with a thorough analysis at the circuit board level to determine the exact cause of the defect. Depending on the nature of the damage, faulty electronic components are replaced, damaged traces are repaired, and stored crash data is erased. A final quality check ensures full functionality.

Upon receipt of the removed control unit, it is first tested on specialized test systems. Experienced technicians, drawing on more than 20,000 repairs performed, accurately identify the fault. Before proceeding with repair, it is advisable to confirm at a qualified workshop that the issue truly originates from the control unit itself and not from external components such as sensors or wiring harnesses.

The actual repair involves replacing defective parts and, if necessary, reprogramming the device. Following successful restoration, the control unit undergoes comprehensive functional testing. The results are documented in a test report included with the returned unit. All repairs come with 2 years' statutory liability for defects.