Airbag control unit with part number 988202X325

What is the function of the airbag control unit 988202X325?

The airbag control unit with part number 988202X325 is the central control module of the passive safety system (SRS) in the Nissan Terrano R20. Its primary task is to continuously monitor signals from the vehicle’s acceleration sensors and, in the event of a crash, precisely deploy the airbags and seatbelt pretensioners at the optimal moment.

This unit serves as the brain of the restraint system. It analyzes data from the crash sensors in real time to assess the severity and nature of an impact. Based on this analysis, the control unit determines which restraint devices need to be activated to provide maximum protection for occupants. After deployment, the unit stores so‑called crash data, effectively locking out further use until professional repair is performed.

Why does the control unit 988202X325 fail?

A common cause of failure for the 988202X325 control unit is the retention of crash data after an accident, which prevents further operation. Other causes include internal electronic malfunctions, communication issues, or damage caused by external factors such as moisture or problems within the vehicle’s onboard electronics.

The most frequent reason requiring repair is an entry in the fault memory indicating stored crash data. These records remain permanently embedded in the unit’s memory after an airbag deployment and cannot be erased using standard diagnostic tools, effectively disabling the device for further use.

In addition, internal components of the control unit may also fail—this includes faults in the processor, memory chip, or power supply. Such defects can manifest as communication interruptions with diagnostic equipment or specific error codes. External factors like water damage, faulty wiring, or loose connectors can likewise lead to complete component failure.

How do you recognize a defect in the airbag control unit 988202X325?

The primary symptom of a malfunctioning 988202X325 control unit is a lit or flashing SRS airbag warning light on the instrument cluster. This indicates that the entire airbag system has been deactivated and will not deploy in the event of a crash. Often, communication with the control unit via diagnostic tools is also lost.

If the airbag warning light fails to extinguish after starting the engine, this is a clear sign of a system fault. In this condition, the vehicle is no longer roadworthy because passive safety is compromised. Immediate inspection at a specialized workshop is essential.

Another indication may be entries in the fault memory, such as “internal error” or “communication interrupted.” In some cases, the unit may completely stop responding to diagnostic requests, making it impossible to retrieve diagnostic data and pointing to a severe internal fault.

In which vehicles is the control unit 988202X325 installed?

The airbag control unit with part number 988202X325 was specifically developed for the Nissan Terrano. At Airbag24, we offer professional repair services for this control unit, which is used in the following models:

Nissan Terrano R20 (model years 1993–2007)

How does the repair of the control unit 988202X325 work?

Repair at Airbag24 follows a standardized process that begins with the submission of the removed control unit. Following an initial inspection by our technicians, the root cause of the issue is identified, crash data is cleared, and any defective electronic components are replaced. A functional test is then conducted before returning the repaired unit.

Before removal, the vehicle’s fault memory should be read out. The printed fault log must be included with the control unit when sending it to Airbag24 to expedite diagnosis. Upon receipt, our mechatronics engineers perform a systematic analysis to pinpoint the exact cause of the problem.

The core of the repair involves addressing the underlying faults, including safely erasing stored crash data and restoring internal electronics. If repair is not feasible, we offer a remanufactured replacement unit as an alternative. All repairs and replacement units undergo rigorous quality control and come with 2 years’ statutory liability for defects.