Airbag control unit with part number 77960-T3W-D010-M4

What does the airbag control unit 77960-T3W-D010-M4 do?

The control unit 77960-T3W-D010-M4 is the airbag control unit of Honda and forms the central control of the restraint system. It processes the signals from the crash sensors, decides on airbags and seatbelt pretensioners in an accident and monitors the system continuously. After an accident it stores crash data and locks itself.

The monitoring protects you in everyday use, because faults become visible early. If the unit shows a fault, the airbag warning light in the instrument cluster lights up.

Why does the control unit 77960-T3W-D010-M4 fail?

The most common cause is crash data after an accident, even if no airbag was deployed. Airbag24 deletes this data during the repair of the control unit 77960-T3W-D010-M4.

The crash data remains in the memory, and a normal diagnostic tool cannot delete it; deletion takes place at Airbag24. Aged electronic components are also possible causes, as are cold solder joints on the circuit board, which can interrupt signals.

Moisture and corrosion at plug connectors worsen the contact. Voltage spikes, for example from a weak battery or a jump start, also count among the possible causes.

How can you tell that the 77960-T3W-D010-M4 is defective?

The airbag warning light in the instrument cluster indicates a defect when it lights up permanently or intermittently. Fault messages may also appear in the instrument cluster, and the diagnostic tool finds no connection to the control unit 77960-T3W-D010-M4.

Pay particular attention to these signs:

• The warning light stays on permanently
• The warning light only comes on intermittently
• A fault message appears in the instrument cluster
• The diagnostic tool cannot establish a connection to the control unit
• The fault memory cannot be cleared

With these signs, airbags and seatbelt pretensioners may fail to deploy in an emergency. A prompt check therefore makes sense, even if the vehicle otherwise seems unremarkable.

Which vehicles is the 77960-T3W-D010-M4 fitted in?

The control unit 77960-T3W-D010-M4 is fitted in these Honda vehicles: Honda Accord 9th generation (2012-2019). The assignment is based on our data for this part number.

The list of vehicles follows directly below:

• Honda Accord 9th generation (2012-2019)

A comparison of the part number on the unit with this page shows whether you have removed the right unit. It does not establish the cause. Only the read-out fault memory shows whether the control unit is defective or a connector or cable is responsible.

For the same vehicles, we also repair control units with the part numbers 77960-T2A-A013-M4, 77960-T2A-A020-M4, 77960-T2A-A021-M4, 77960-T2A-A030-M4, 77960-T2A-D011-M4, 77960-T2A-D020-M4.

How does the repair of the 77960-T3W-D010-M4 work?

First have the fault memory read out and attach the log. Then disconnect the battery and then remove the control unit 77960-T3W-D010-M4. At Airbag24, checking, repairing and testing take 3–4 working days.

Online, you create the repair order, then pack the unit well and send it in.

Airbag24 checks the control unit on the test bench, replaces defective components, deletes stored crash data and carries out a function test. Afterwards, your own unit is returned 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 77960-T3W-D010-M4 get to Airbag24?

You send the control unit 77960-T3W-D010-M4 as a parcel or book a UPS collection for an extra charge. Airbag24 sends the repaired unit back by UPS.

The printed repair order goes into the parcel, and the unit is packed shock-resistant.