Airbag control unit with part number MR472691

What does the airbag control unit MR472691 do?

The airbag control unit MR472691 regulates the restraint system (SRS) of Mitsubishi. It evaluates the crash sensors, determines in an impact which airbags and seatbelt pretensioners fire, and keeps the state of the entire system under observation. After an accident, it stores crash data and locks itself.

If the unit detects a deviation, it writes it into the fault memory and activates the warning indicator. In this way, it remains visible when something is wrong with the restraint system.

Why does the control unit MR472691 fail?

The most common cause is crash data from an earlier accident, even if no airbag was triggered. They cannot be removed with a normal diagnostic tool. Besides that, ageing electronics, cold solder joints, moisture at the plugs and voltage spikes are suspected for MR472691.

• Ageing of the electronic components
• Cold solder joints
• Moisture and corrosion at plug connections
• Voltage spikes, for example from a jump start

A stored crash entry is no proof of damage to the electronics. Which cause actually applies can only be determined by the examination.

How can you tell that the MR472691 is defective?

The airbag warning light stays on permanently or intermittently, an error message appears, the diagnostic tool cannot establish a connection to the control unit MR472691, or the fault memory cannot be cleared. In an emergency, the airbags and seatbelt pretensioners may then not trigger.

The light reflects the state of the restraint system and is the most important sign you can observe. This state persists until the cause has been rectified.

If no connection to the diagnostic tool is established, the cause does not necessarily lie in the control unit. Plugs, cables and the power supply are equally possible.

Which vehicles is the MR472691 fitted in?

The airbag control unit MR472691 is fitted in these vehicles: Mitsubishi Space Runner N50 (1999-2002).

The following vehicle information is stored for this part number.

• Mitsubishi Space Runner N50 (1999-2002)

The part number is printed on the label of the removed unit. If you compare it with this page, you know that you have the right unit. That says nothing about a defect, however. Only the fault memory read out beforehand shows whether the control unit is affected or whether a plug or cable is the cause.

How does the repair of the MR472691 work?

First, have the fault memory read out and attach the log. Then disconnect the battery, and only then remove the control unit MR472691. Next, create a repair order online and pack the unit carefully for sending.

Airbag24 then takes the unit onto the test bench. Defective components are repaired, crash data is erased and a function test is carried out. Airbag24 typically needs 3–4 working days for this; afterwards, your own unit 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 MR472691 get to Airbag24?

You send the unit MR472691 as a parcel, or have it collected by UPS for an extra charge. Airbag24 returns it to you by UPS after the repair.

The printed repair order goes into the parcel together with the unit, which is packed shock-proof.