Airbag control unit with part number 77960-TL4-G911-M1

What does the airbag control unit 77960-TL4-G911-M1 do?

The airbag control unit 77960-TL4-G911-M1 is the control unit of the SRS restraint system for Honda. From the signals of the crash sensors it determines, within milliseconds of an accident, which airbags and seatbelt pretensioners to trigger. It also monitors the system continuously and reports faults via the airbag warning light.

In normal operation it works unobtrusively in the background. It checks the connections and sensors so that triggering stays reliable in an emergency.

After an accident the unit stores crash data and then locks itself.

Why does the control unit 77960-TL4-G911-M1 fail?

The most common cause is crash data left in the memory after an accident, even without an airbag deployment. This data cannot be erased with an ordinary diagnostic tool. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery or a jump start.

Airbag24 erases the crash data as part of the repair. The other causes act on solder joints and contacts over time.

How can you tell that the 77960-TL4-G911-M1 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently. Other signs are fault messages in the instrument cluster, no connection to the diagnostic tool, and a fault memory that cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then fail to trigger.

In this case a prompt check is advisable, even if the car seems to behave normally in everyday use.

Which vehicles is the 77960-TL4-G911-M1 fitted in?

The control unit 77960-TL4-G911-M1 is used in Honda, specifically in the following vehicles: Honda Accord 8th generation (2008-2015).

The overview shows the vehicles stored for this part number.

• Honda Accord 8th generation (2008-2015)

Comparing the part number on the label with this page only shows that the unit is correctly assigned. Whether the control unit itself is defective, or whether a plug or cable is the cause, can only be established by a fault memory read out beforehand.

For the same vehicles, we also repair control units with the part numbers 77960-TA0-A01, 77960-TA0-A011M4, 77960-TA0-A02, 77960-TA0-A020-M4, 77960-TA0-A040-M4, 77960-TA0-A202-M4.

How does the repair of the 77960-TL4-G911-M1 work?

First have the fault memory read out and enclose the log, then disconnect the battery and only then remove the control unit. Checking, repair and function test at Airbag24 usually take 3–4 working days.

Then create a repair order online and send in the well-packed unit. Airbag24 then examines it, repairs defective components, erases stored crash data and tests the function. Your own unit is then returned 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-TL4-G911-M1 get to Airbag24?

You can send the unit as a parcel or have it collected by UPS for an extra charge. Airbag24 sends it back to you by UPS after the repair.

Enclose the printed repair order in the parcel and pack the control unit shockproof.