Airbag control unit with part number 77960-T90-A310-M2

What does the airbag control unit 77960-T90-A310-M2 do?

The airbag control unit 77960-T90-A310-M2 brings together all the threads of the restraint system (SRS) in Honda. In a collision, it reads the crash sensors and determines within milliseconds which airbags and seatbelt pretensioners fire.

At the same time, it checks the system during normal driving. If it finds a fault, it passes the signal on to the airbag warning light in the instrument cluster.

After an accident, the unit stores crash data and locks itself.

Why does the control unit 77960-T90-A310-M2 fail?

The most common cause is crash data after an accident, even if no airbag was triggered. Further causes are aged electronic components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes.

Crash data remains inaccessible to a standard diagnostic tool. Airbag24 erases it during the repair, so that the unit can be checked again afterwards.

The remaining factors can work unseen. Aged components and cold solder joints change the electrical behaviour of the circuit board.

Moisture at the plugs and corrosion disrupt the contact. Voltage spikes arise, for example, from a weak battery or a jump start.

How can you tell that the 77960-T90-A310-M2 is defective?

The airbag warning light in the instrument cluster indicates the defect by lighting up permanently or intermittently. An error message may appear in addition, or the diagnostic tool cannot reach the control unit. In an emergency, airbags and seatbelt pretensioners may then fail to trigger.

The warning light is the central sign to watch for. It stays lit even when the vehicle continues to drive normally.

Please check the condition promptly.

Which vehicles is the 77960-T90-A310-M2 fitted in?

The control unit 77960-T90-A310-M2 is fitted in these vehicles: Honda Pilot 4th generation (from 2022).

The following list names the vehicles for which this part number is recorded.

• Honda Pilot 4th generation (from 2022)

Two separate steps help you. Compare the part number on the label of the removed unit with this page, so you can identify the right unit. Also have the fault memory read out, because only this result shows whether the control unit is defective or whether a plug or cable is the cause.

How does the repair of the 77960-T90-A310-M2 work?

First read out the fault memory and attach the log. Then disconnect the battery, and only after that remove the control unit. Next, create a repair order online and send in the carefully packed unit.

Airbag24 checks the unit on the test bench, repairs defective components, erases the stored crash data and carries out a function test. Afterwards you receive your own unit back.

Processing at Airbag24 usually takes 3–4 working days, referring solely to inspection, repair and testing.

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 77960-T90-A310-M2 get to Airbag24?

You send the unit as a package or book a UPS collection for an extra charge. Airbag24 sends it back by UPS after the repair.

Pack the control unit shockproof and enclose the printed repair order.