Airbag control unit with part number 77960-T0A-B810-M4

What does the airbag control unit 77960-T0A-B810-M4 do?

The airbag control unit 77960-T0A-B810-M4 controls the restraint system (SRS) of Honda. It evaluates the crash sensors, decides in an accident within milliseconds whether airbags and seatbelt pretensioners are triggered, and monitors the system during everyday driving.

It shows detected faults via the airbag warning light. This makes the condition of the system traceable even between accidents.

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

Why does the control unit 77960-T0A-B810-M4 fail?

The most common cause is crash data stored after an accident, even without a triggered airbag.

• Aged electronic components.
• Cold solder joints.
• Moisture and corrosion at plug connections.
• Voltage spikes, for example from a weak battery or a jump-start.

Crash data cannot be erased with a normal diagnostic tool. Airbag24 removes it during the repair, together with the check of the other components.

How can you tell that the 77960-T0A-B810-M4 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently. The diagnostic tool finds no connection to the control unit, and the fault memory cannot be cleared. In an emergency, airbags and seatbelt pretensioners may not trigger.

An error message in the instrument cluster confirms the finding as soon as it appears. However, this display does not show which cause lies behind it.

Which vehicles is the 77960-T0A-B810-M4 fitted in?

The control unit 77960-T0A-B810-M4 is fitted in these vehicles: Honda CR-V 4 RM (2012-2018).

These models are assigned to the part number:

• Honda CR-V 4 RM (2012-2018)

On the one hand, compare the part number on the label of the removed unit with this page. This only shows that it is the right unit. On the other hand, have the fault memory read before removal. Only this result shows whether the control unit itself or a connector 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-B810-M4 work?

Airbag24 usually processes the unit in 3–4 working days. First you read out the fault memory and enclose the log. Then you disconnect the battery and remove the control unit. Next, you create a repair order online and send the unit in well packed.

Airbag24 checks the unit on the test bench, replaces defective components and erases the stored crash data. A function test follows before the 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 77960-T0A-B810-M4 get to Airbag24?

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

Place the printed repair order in the parcel. Pack the unit shock-resistant.