Airbag control unit with part number MR268156

What does the airbag control unit MR268156 do?

The airbag control unit MR268156 is the central control unit of the restraint system (SRS) in Mitsubishi. It evaluates the crash sensors and decides within milliseconds in a crash which airbags and seatbelt pretensioners to trigger.

Monitoring runs in the background, and faults appear via the airbag warning light.

After a crash, the unit stores crash data and locks itself.

Why does the control unit MR268156 fail?

The most common cause with the MR268156 is crash data stored after a crash, even if no airbag has deployed. A normal diagnostic tool cannot erase this data. Other causes are also possible, such as aged components or moisture.

Other causes include:

• aged electronic components
• dry joints
• moisture and corrosion at plug connections
• voltage spikes, for example from a weak battery or a jump start

Whether any of these causes applies only becomes clear when the fault memory is read out.

How can you tell that the MR268156 is defective?

A fault in the MR268156 shows up as the airbag warning light in the instrument cluster, which lights up permanently or intermittently. In addition, an error message appears, the diagnostic tool finds no connection to the control unit, and the fault memory cannot be cleared.

In an emergency, the airbags and seatbelt pretensioners may then fail to deploy. Therefore, have the system checked promptly.

The error message appears in the instrument cluster and cannot be overlooked.

Which vehicles is the MR268156 fitted in?

The control unit MR268156 is fitted in these vehicles: Mitsubishi Pajero V20 (1990-2000). You can tell whether your vehicle is among them by make and model.

The list of vehicles is here:

• Mitsubishi Pajero V20 (1990-2000)

Compare the part number on the label of the removed unit with this page. This only shows that you have the correct unit. The cause is established only by the fault memory, which you should have read out before removal, as it shows whether the control unit or a plug or cable is causing the fault.

For the same vehicles, we also repair control units with the part numbers MB339510.

How does the repair of the MR268156 work?

First, have the fault memory read out and enclose the log. Then disconnect the battery, remove the control unit MR268156 and create a repair order online. Send in the well-packed unit. At Airbag24, processing usually takes 3–4 working days.

Airbag24 checks the unit on the test bench, replaces defective components, erases stored crash data and carries out a function test. Afterwards your own unit is returned to you.

The 3–4 working days apply only to checking, repairing and testing at Airbag24.

Our repairs come with 2 years' statutory liability for defects.

The repaired control unit comes back with all vehicle data and is ready for use as soon as it is refitted — no coding or programming is required.

How does the control unit MR268156 get to Airbag24?

You send the MR268156 in as a parcel or book a UPS collection for an extra charge. After repair, Airbag24 returns it by UPS.

Put the printed repair order into the parcel and pack the unit shock-resistant.