Airbag control unit with part number 77960-TA0-L030-M4

What does the airbag control unit 77960-TA0-L030-M4 do?

The airbag control unit 77960-TA0-L030-M4 is the central control unit of the restraint system (SRS) for Honda. It evaluates the signals from the crash sensors and decides in an accident, within milliseconds, which airbags and seatbelt pretensioners are triggered.

It also monitors the system continuously and reports faults via the airbag warning light in the instrument cluster.

After an accident, it stores crash data and then locks itself.

Why does the control unit 77960-TA0-L030-M4 fail?

The most common cause is crash data stored after an accident, even if no airbag was triggered. A normal diagnostic tool cannot delete it. Other causes include aged components, cold solder joints, moisture and corrosion on plug connections, as well as voltage spikes.

Crash data stays in the memory until it is specifically removed.

The remaining causes lie in the electronics themselves. Voltage spikes arise, for example, from a weak battery or when jump-starting.

How can you tell that the 77960-TA0-L030-M4 is defective?

A defect first shows up on the airbag warning light in the instrument cluster, which lights up permanently or only at times. Added to this are a fault message on the instrument cluster, a missing connection to the diagnostic tool and a fault memory that cannot be cleared.

In this case, airbags and seatbelt pretensioners may possibly fail to trigger in an emergency. An inspection of the system is therefore advisable.

The warning light shows the fault as soon as it is present. Every lit warning light therefore deserves attention and must not be overlooked.

Which vehicles is the 77960-TA0-L030-M4 fitted in?

The 77960-TA0-L030-M4 is fitted in the following vehicles: Honda Accord 8th generation (2008-2015).

The vehicles at a glance:

• Honda Accord 8th generation (2008-2015)

Compare the part number on the label of the removed unit with this page. This ensures you have the right unit. Also have the fault memory read out beforehand, because only this log shows whether the control unit itself is defective or whether a plug or a cable is the cause.

For the same vehicles, we also repair control units with the part numbers 77960-S84-A86, 77960-TA0-A01, 77960-TA0-A011M4, 77960-TA0-A02, 77960-TA0-L02.

How does the repair of the 77960-TA0-L030-M4 work?

First you have the fault memory read out and enclose the log. Then you disconnect the battery and only afterwards remove the control unit; then you create a repair order online.

Pack the unit well and send it in. Airbag24 checks it on the test bench, replaces defective components, deletes stored crash data and carries out a function test.

Processing at Airbag24 usually takes 3–4 working days. Afterwards your own unit is sent 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 77960-TA0-L030-M4 get to Airbag24?

You send the control unit as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 sends the unit back to you by UPS.

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