Airbag control unit with part number 153000313

What is the function of Airbag Control Unit 153000313?

The airbag control unit with part number 153000313 is the central control module for the occupant protection system in the Mitsubishi Pajero V90. It processes data from the acceleration sensors to precisely and promptly deploy the airbags and seatbelt pretensioners in the event of a crash. Its proper functioning is critical for safety.

As the “brain” of the restraint system, this module continuously monitors all connected components, including front and side airbags, seatbelt pretensioners, and crash sensors distributed throughout the vehicle. Upon a collision, the control unit analyzes incoming signals within milliseconds and determines which restraint devices need to be activated to provide optimal protection for occupants.

Every system status, every deployment, and every detected fault is logged in the device’s internal memory. These records are essential for diagnosis and ensuring proper functionality after an incident.

Why does Airbag Control Unit 153000313 fail?

A failure of control unit 153000313 is often caused by permanently stored crash data that locks the system. Internal electronic faults—such as defective memory modules or resistors—are also common causes. External factors like wiring issues or an unstable power supply can likewise lead to malfunctions.

The most frequent cause of malfunction is the storage of crash data. After a crash—or sometimes even due to a falsely triggered signal—data gets saved in the control unit’s memory, causing the system to lock down for safety reasons. Simple erasure via diagnostic tools then becomes impossible.

Internal hardware defects represent another widespread source of errors. These include faulty memory units (EEPROM), defective internal resistors—for example, when the resistance for the driver or passenger airbag is reported as too high—or damage caused by overvoltage in the vehicle’s electrical system. Such defects often result in error codes like B1000, 65535, or 93F9, indicating an internal control unit fault.

The fault isn’t always directly in the control unit itself. Peripheral issues—such as broken wires, corroded connectors, or insufficient supply voltage—can also produce symptoms that mistakenly point to a defective control unit. A professional diagnosis is therefore essential before removing the unit.

How do you recognize a defect in control unit 153000313?

A defect in control unit 153000313 primarily manifests as the airbag warning light remaining constantly illuminated on the instrument panel. Often, the control unit can no longer be read by a diagnostic tool (no communication). Specific messages on the display, such as a flashing engine check light, may also indicate a problem.

The clearest sign is the active airbag warning lamp. It lights up when the ignition is turned on and never goes off, signaling that the restraint system is not operational.

Another critical symptom is complete loss of communication. If a workshop attempts to read the fault memory via the OBD interface, it receives no response from the airbag control unit, making external diagnostics impossible.

In the case of the Mitsubishi Pajero, additional unusual symptoms may appear, such as a flashing engine check light or a message regarding the fuel shut-off valve on the display—symptoms that at first glance seem unrelated to the airbag system.

In which vehicles is control unit 153000313 installed?

The airbag control unit with part number 153000313 is specifically designed for Mitsubishi vehicles. It is mainly used in the Pajero V90 series, including the facelifted models. At Airbag24, we professionally repair this control unit for the aforementioned models.

Specifically, this part number is used in the following models and series:

Mitsubishi Pajero V90 (model years 2007–2012)

Mitsubishi Pajero V90 Facelift (model years 2012–2021)

How is control unit 153000313 professionally repaired?

At Airbag24, repair of control unit 153000313 is performed as a professional component-level overhaul. Upon receipt, the unit is thoroughly inspected to pinpoint the exact cause of the fault. Subsequently, crash data is erased, defective electronic components are replaced, and a final functional test is conducted.

The process begins with the careful removal of the control unit from the vehicle. Prior to disassembly, it is recommended to obtain a fault report from a qualified workshop and attach it to the shipment to expedite diagnosis.

Upon receipt at Airbag24, our technicians perform a comprehensive analysis. Using specialized equipment, they read the internal memory and inspect the electronics. Depending on the fault pattern, stored crash data is securely erased, defective memory chips, resistors, or other components are desoldered, and replaced with new, high-quality parts.

After repair, the control unit undergoes thorough functional and quality testing to ensure it once again meets the manufacturer’s specifications. We provide 2 years' statutory liability for defects on every repair.