Airbag control unit with part number 77960-T0N-F710-M4

What does the airbag control unit 77960-T0N-F710-M4 do?

The airbag control unit 77960-T0N-F710-M4 coordinates the SRS in Honda. Based on the sensor signals, it calculates within milliseconds in a crash which airbags and seatbelt pretensioners to trigger, and monitors the other components continuously. If it detects a fault, it indicates this via the airbag warning light.

After an accident, the unit stores crash data and then locks itself. In the vehicle, it works together with sensors, wiring and triggering elements, whose plausibility it checks continuously.

Why does the control unit 77960-T0N-F710-M4 fail?

The most common cause with 77960-T0N-F710-M4 is crash data stored after an accident, even if no airbag has deployed. Beyond this, other causes may come into consideration, which can be described in general terms.

Crash data cannot be erased with a standard diagnostic tool. Airbag24 erases it during the repair and then checks the unit.

The other causes concern the electronics themselves or their environment:

• aged electronic components
• cold solder joints
• moisture and corrosion at plug connections
• voltage spikes, for example from a weak battery or a jump start

How can you tell that the 77960-T0N-F710-M4 is defective?

A fault in the 77960-T0N-F710-M4 shows up as the airbag warning light in the instrument cluster, which can light up constantly or intermittently. A fault message also appears, the diagnostic tool cannot find the control unit, and the fault memory remains.

A fault can mean that airbags and seatbelt pretensioners may not deploy in an emergency. Take these signs seriously and have the vehicle checked promptly.

• Airbag warning light lights up constantly
• Airbag warning light lights up intermittently
• Fault message in the instrument cluster
• Diagnostic tool has no connection to the control unit
• Fault memory cannot be cleared

Which vehicles is the 77960-T0N-F710-M4 fitted in?

The 77960-T0N-F710-M4 is fitted in these vehicles: Honda CR-V 4 RM (2012-2018).

The list shows which vehicles this part number is assigned to:

• Honda CR-V 4 RM (2012-2018)

Compare the number on the label of the removed unit with this page. This tells you that it is the right unit, but nothing more. Whether the control unit is defective or a plug or cable is causing the problem is shown only by the fault memory read out. Therefore have it read out before removal.

For the same vehicles, we also repair control units with the part numbers 77960-T0A-3070-M4, 77960-T0A-A012-M1, 77960-T0A-A013-M1, 77960-T0A-A210-M1, 77960-T0A-A212-M1, 77960-T0A-A230-M1.

How does the repair of the 77960-T0N-F710-M4 work?

With the 77960-T0N-F710-M4, this sequence applies: first have the fault memory read out and enclose the log, then disconnect the battery and only then remove the control unit. Afterwards, create a repair order online and send in the well-packed unit. At Airbag24, processing takes 3–4 working days.

Airbag24 first checks the unit on the test bench and puts defective components back in order. Then stored crash data is erased and a function test is carried out. Your own unit then 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-T0N-F710-M4 get to Airbag24?

You can send the unit in as a parcel or book a UPS collection for an extra charge. Airbag24 returns the repaired control unit 77960-T0N-F710-M4 by UPS.

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