Airbag control unit with part number MN141262

What does the airbag control unit MN141262 do?

The airbag control unit MN141262 processes the signals of the crash sensors in Mitsubishi. In an accident, it decides which airbags and seatbelt pretensioners are triggered, and monitors the system continuously. After an accident it stores crash data and locks itself.

The monitoring covers sensors, wiring and the output stages.

If the device reports a fault, the airbag warning light comes on. This warning makes the state of the system permanently visible.

Why does the control unit MN141262 fail?

The most common cause for the MN141262 is crash data stored after an accident, even if no airbag has triggered, and a normal diagnostic tool cannot delete it. Further causes include aged electronic components, cold solder joints, moisture and corrosion, and voltage spikes.

Crash data is an entry that the device creates after an event. A standard diagnostic tool does not touch it.

Aged components and cold solder joints are hardly visible from outside.

Moisture and corrosion at plug connections, as well as voltage spikes, for example from a weak battery or a jump start, also throw the electronics out of step.

How can you tell that the MN141262 is defective?

The airbag warning light is on permanently or intermittently, and a fault message appears in the instrument cluster. If the fault memory cannot be cleared or the diagnostic tool does not find the control unit, there is also a suspicion of a fault. Airbags and seatbelt pretensioners may then not trigger in an emergency.

Not every sign appears at the same time, and some are initially difficult to interpret.

The light shows that the system has noticed something. Only reading out the fault memory reveals which point is affected.

Which vehicles is the MN141262 fitted in?

The airbag control unit MN141262 is fitted in these vehicles: Mitsubishi Lancer CJ (1996-2003) and CS (2003-2007). For the comparison, it is easiest to have the vehicle registration document to hand.

The vehicles from the assignment are listed one below the other:

• Mitsubishi Lancer CJ (1996-2003)
• Mitsubishi Lancer CS (2003-2007)

Comparing the part number on the label of the removed device confirms that it matches this page. The decisive factor is the fault memory, which you have read out in advance. Only this record shows whether the control unit itself is defective or whether a connector or a cable is the cause.

For the same vehicles, we also repair control units with the part numbers MN141446, MN141447, MN141473, MR260703, W2T62175, W2T62176.

How does the repair of the MN141262 work?

You read out the fault memory first, and the log goes with the repair order. Then disconnect the battery and only then remove the control unit MN141262. Processing at Airbag24 usually takes 3–4 working days.

Then you create a repair order online and send the device in packed. Airbag24 checks it on the test bench, repairs defective components, deletes stored crash data and carries out a function test.

Then your own device goes back to you.

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 MN141262 get to Airbag24?

The device reaches Airbag24 either by parcel or via a UPS collection that you book for an extra charge. The return after the repair also runs via UPS.

Print the repair order and put it into the parcel; the device goes in shockproof packaging.