Airbag control unit with part number 152300-3430

What is the function of the airbag control unit 152300-3430?

The Denso airbag control unit with part number 152300-3430, also known under the Mitsubishi designation MR472773, serves as the central control unit for the occupant protection system in the Mitsubishi Pajero V60. It analyzes data from the crash sensors and is responsible for precisely and promptly deploying the airbags and seatbelt pretensioners in the event of a collision.

As an original component from Denso, this control unit is specifically tailored to the vehicle architecture of the Pajero III (V60). It continuously monitors all components of the airbag system—from the sensors and ignition circuits to the warning light in the instrument cluster—to ensure constant operational readiness.

The proper functioning of this device is absolutely safety-critical. Whenever any irregularity is detected—whether an internal fault or a malfunction in an external component—the airbag warning light illuminates to provide clear and unambiguous notification to the driver.

Why does the control unit 152300-3430 fail?

The most common cause of failure for the control unit 152300-3430 is the storage of crash data following an accident. Other typical defects include internal electronic faults on the circuit board or a complete loss of communication, rendering the unit inaccessible via the diagnostic interface.

After a collision, the control unit locks internally and permanently stores the crash event data. This condition is intentionally designed by the manufacturer to prevent unintended deployment. Professionally erasing this stored data is a crucial step in electronic repair.

Internal faults can arise due to aging of electronic components or voltage spikes in the vehicle’s electrical system. These often result in the airbag warning light remaining illuminated even when no accident has occurred and the rest of the system remains technically intact.

A total loss of communication indicates a more severe hardware defect within the control unit. In such cases, neither the workshop nor a diagnostic tool can access the stored information, making targeted troubleshooting on the vehicle impossible.

How do you recognize a defect in the control unit 152300-3430?

A defect in the airbag control unit 152300-3430 primarily manifests as the airbag warning light staying constantly illuminated on the dashboard. Another clear indication is that the control unit cannot be read during diagnostics. Specific error codes such as “Internal Error” or “Crash Data Stored” directly point to a problem within the device itself.

The most obvious symptom is the persistently lit airbag warning light. It does not turn off after starting the engine, signaling that the entire restraint system is non-functional and would fail to deploy in the event of a crash.

In many cases, the workshop cannot establish a connection to the airbag control unit via the OBD port. The unit fails to respond to diagnostic requests, complicating fault analysis on the vehicle and usually indicating an internal defect within the control unit itself.

Even when communication is possible, specific error codes confirm the root cause. Entries like “Internal Control Unit Error” or “Crash Data Stored” demonstrate that the fault lies within the control unit rather than in external components such as sensors or wiring.

In which vehicles is the control unit 152300-3430 installed?

The Denso airbag control unit 152300-3430 was specifically developed for the third-generation Mitsubishi Pajero. At Airbag24, we repair this control unit for the specific model variants of the Pajero V60, covering both pre-facelift and facelift versions produced between 2000 and 2006.

The repair service at Airbag24 covers the following specific models where this control unit was factory-installed:

Mitsubishi Pajero V60 (2000–2003)

Mitsubishi Pajero V60 Facelift (2003–2006)

Compatibility also extends to the technical Pajero III series (V7_W, V6_W), particularly the 3.2 Di-D variant with designations V68W and V78W.

How is the repair of the control unit 152300-3430 carried out?

At Airbag24, the repair of the control unit 152300-3430 begins with a professional initial inspection to verify the reported fault. Subsequently, stored crash data is erased, and any electronic defects on the circuit board are rectified. Following successful repair and a final test, the unit is returned with 2 years' statutory liability for defects.

Before removal, the workshop should perform a thorough diagnosis and document the fault history. This information is essential for targeted and efficient repairs and should be included with the control unit upon submission.

After removal and shipment to Airbag24, our technicians perform a comprehensive analysis. The primary focus is on addressing the root cause—whether it’s erasing crash data using specialized tools or repairing hardware defects at the component level.

Following repair, the control unit undergoes a functional test to ensure all faults have been resolved and communication operates flawlessly. The unit is returned in “plug-and-play” condition, eliminating the need for further vehicle coding.

We provide 2 years’ statutory liability for defects on every repair performed, underscoring the quality and durability of our workmanship.