Airbag control unit with part number 77960-T0A-F620-M4

What does the airbag control unit 77960-T0A-F620-M4 do?

The airbag control unit 77960-T0A-F620-M4 is the central control unit of the restraint system (SRS) of Honda. It evaluates the crash sensors, decides within milliseconds in an accident on airbags and seatbelt pretensioners, and monitors the system continuously. After an accident it stores crash data and locks itself.

Faults are reported via the airbag warning light in the instrument cluster, so the state of the system is always recognisable.

Why does the control unit 77960-T0A-F620-M4 fail?

The most common cause on the 77960-T0A-F620-M4 is crash data stored after an accident, even if no airbag has deployed. A normal diagnostic tool cannot erase it. Further causes are aged components, cold solder joints, moisture and corrosion at plugs, and voltage spikes.

Airbag24 removes the crash data during the repair.

Aged components and cold solder joints affect the electronics themselves. Moisture, corrosion and voltage spikes, on the other hand, act from outside on contacts and the vehicle electrics.

How can you tell that the 77960-T0A-F620-M4 is defective?

A defect in the 77960-T0A-F620-M4 shows up as the airbag warning light, which stays on permanently or intermittently, as an error message in the instrument cluster, as a lack of connection to the diagnostic tool, and as a fault memory that cannot be cleared.

The airbag warning light in the instrument cluster is the clearest sign. If it lights up, airbags and seatbelt pretensioners may not deploy in an emergency. Please have the warning checked promptly.

Which vehicles is the 77960-T0A-F620-M4 fitted in?

The control unit 77960-T0A-F620-M4 is fitted in this assignment: Honda CR-V 4 RM (2012-2018).

The assignment as a list:

• Honda CR-V 4 RM (2012-2018)

Compare the part number on the label of the removed unit with this page; then you only know that you have the right unit. Also have the fault memory read out beforehand. Only this log shows whether the control unit or 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-F620-M4 work?

First have the fault memory read out and attach the log. Then disconnect the battery and only then remove the control unit 77960-T0A-F620-M4. Create a repair order online and send in the well-packed unit. Airbag24 usually needs 3–4 working days for testing, repair and checking.

First, Airbag24 checks the unit on the test bench, then comes the component replacement, the erasing of the crash data and the function test. Afterwards the unit returns 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-F620-M4 get to Airbag24?

The control unit 77960-T0A-F620-M4 reaches Airbag24 either as a parcel or with a UPS collection booked for an extra charge. After the repair it goes back to you by UPS.

Pack the unit shock-proof and include the printed repair order.