Airbag control unit with part number F01G07200F

What is the function of the airbag control unit F01G07200F?

The airbag control unit with the internal Bosch part number F01G07200F, also known by the Nissan/Infiniti number 98820JJ50A, is the central control unit for the Supplemental Restraint System (SRS) in the Infiniti G37 (V36). It continuously analyzes data from crash sensors to precisely deploy airbags and seatbelt pretensioners in the event of an accident.

As the brain of the Supplemental Restraint System (SRS), this module processes signals from acceleration and pressure sensors throughout the vehicle. Based on this data, it determines within milliseconds whether and how extensively the restraint systems should be activated.

A critical function is also the storage of event data. After a crash, so‑called crash data is permanently recorded in the control unit’s internal memory, often on an EEPROM chip of type 95640. This data logging locks the system for later analysis but necessitates professional repair of the module.

Why does the F01G07200F control unit fail?

The most common cause of failure for the F01G07200F control unit is the retention of crash data after an accident. This lockout is a safety feature that requires professional reset. In addition, internal electronic faults—such as defective microcontrollers, water damage, or communication issues—can impair functionality.

Following each airbag deployment, the control unit is locked by the system to prevent reuse without expert inspection. This condition is logged in the fault memory as “crash data stored” and is the primary reason why the unit must be repaired.

Independently of accidents, hardware defects can also occur on the circuit board. These include malfunctions in the microcontroller, faulty memory chips (EEPROM), or disruptions in sensor processing. Such internal failures often result in complete loss of communication and are reported in diagnostic logs as “internal error.”

How do you recognize a defect in the F01G07200F?

A defect in the F01G07200F control unit is primarily indicated by the airbag warning light (SRS light) remaining steadily illuminated or flashing in the cockpit. This signals that the restraint system is not operational. Often, the control unit can no longer be read via a diagnostic tool either (no communication).

The most obvious and critical symptom is the active SRS warning light. It indicates that airbags and seatbelt pretensioners would not deploy in the event of another accident. Immediate inspection at a workshop is therefore essential.

Another clear sign is the absence of communication. If a workshop attempts to access the airbag system using a diagnostic device, the control unit fails to respond. This points to a serious internal electronic fault.

If error codes can be retrieved, entries such as “crash data stored” or “internal control unit error” clearly indicate a defect within the module itself. These errors cannot be resolved simply by clearing them and require specialized repair.

In which vehicles is the F01G07200F control unit installed?

The Bosch control unit F01G07200F, corresponding to the external Nissan/Infiniti part number 98820JJ50A, is specifically designed for the Infiniti G37 of the V36 series. It was used as the central airbag system component across the entire production period from 2007 to 2016.

At Airbag24, we repair the control unit with part numbers F01G07200F and 98820JJ50A for the following specific vehicle model:

Infiniti G37 (V36 series, model years 2007–2016)

How does the repair of the F01G07200F proceed at Airbag24?

After sending your defective F01G07200F control unit to Airbag24, our technicians perform a comprehensive diagnosis. The repair includes professionally resetting the stored crash data and fixing internal electronic faults, including replacing defective components. Each repair concludes with a final functional test and 2 years' statutory liability for defects.

The repair process begins with the proper removal of the control unit from the vehicle and its safe shipment to our workshop. Please disconnect the vehicle battery before doing so.

Upon receipt, a systematic analysis takes place. Our technicians visually inspect the circuit board and read the internal fault memory as well as the data stored on the EEPROM chip (type 95640) to pinpoint the exact cause of the fault—whether it’s a crash lockout or a hardware defect.

Repair work involves safely resetting the crash data to factory settings or performing precise soldering to replace defective components such as microcontrollers. Subsequently, the module is tested on a dedicated test bench to ensure full functionality.