Airbag control unit with part number 77960-T0A-A013-M1

What does the airbag control unit 77960-T0A-A013-M1 do?

The airbag control unit 77960-T0A-A013-M1 controls the restraint system (SRS) of Honda. It evaluates the signals from the crash sensors, decides in an emergency within milliseconds which airbags and seatbelt pretensioners are triggered, and monitors the system continuously. If it detects a fault, it shows this via the airbag warning light.

After an accident, the unit records crash data and is then locked. The lock is lifted only by the repair.

The control unit is connected to the sensors and triggers by wiring. In everyday use, it works unobtrusively in the background and needs no operation.

Why does the control unit 77960-T0A-A013-M1 fail?

Most often, the cause is crash data stored after an accident, even if no airbag has deployed. A standard diagnostic tool cannot erase it. Other possible causes are aged electronic components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes, for example from a weak battery or jump-starting.

The crash data remains in the memory even when the vehicle is then used normally. It cannot be removed with a diagnostic tool.

The other causes tend to develop gradually. Electronics age, solder joints can go cold, and moisture attacks plug connectors. Voltage spikes briefly stress the electronics, which is why a steady power supply is important.

How can you tell that the 77960-T0A-A013-M1 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently. In addition, there is an error message in the instrument cluster, a diagnostic tool without a connection to the control unit, and a fault memory that cannot be cleared. With these signs, airbags and seatbelt pretensioners may possibly fail to deploy in an emergency.

The warning light is the indication the vehicle gives itself. If it stays on or keeps coming back, it is worth having the system checked.

The message in the instrument cluster confirms the finding. A diagnostic tool that makes no contact also indicates that something in the system is wrong.

Which vehicles is the 77960-T0A-A013-M1 fitted in?

The airbag control unit 77960-T0A-A013-M1 is fitted in these vehicles: Honda CR-V 4 RM (2012-2018).

These vehicles are recorded in our data for this part number.

• Honda CR-V 4 RM (2012-2018)

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

For the same vehicles, we also repair control units with the part numbers 5WK43782, 77960-SWA-G212-M4, 77960-SWA-G214-M4, 77960-T1G-G920-M4.

How does the repair of the 77960-T0A-A013-M1 work?

First, you have the fault memory read out and enclose the log with the unit. Then disconnect the battery, and only after that remove the control unit. Online, you create the repair order and send the unit in well packed. Processing at Airbag24 usually takes 3–4 working days.

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

This period relates solely to checking, repairing and testing at Airbag24.

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-T0A-A013-M1 get to Airbag24?

You send the unit in as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it to you by UPS.

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