Airbag control unit with part number 77960-TL0-B913-M1

What does the airbag control unit 77960-TL0-B913-M1 do?

The airbag control unit 77960-TL0-B913-M1 is the control unit for the restraint system (SRS) in Honda. It evaluates the crash sensors, triggers the appropriate airbags and seatbelt pretensioners within milliseconds of an accident, and monitors the system constantly. It indicates faults via the airbag warning light.

The unit works not only in an accident but also during normal operation. It checks the connections and sensors so that the system is ready in an emergency.

After an accident it stores crash data and locks itself.

Why does the control unit 77960-TL0-B913-M1 fail?

Start with the stored crash data, which is the most common cause, even without a triggered airbag. A normal diagnostic tool cannot erase it. Other possible causes are aged electronics, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data are measured values that the unit records during the event. They remain in the unit, and a reading tool does not remove them. Airbag24 erases them during the repair.

Electronics age, and solder joints can give way. Moisture and corrosion at the plugs disturb the contact.

Voltage spikes, for example from a weak battery or jump-starting, put additional strain on the components.

How can you tell that the 77960-TL0-B913-M1 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, and an error message appears in the instrument cluster. The diagnostic tool finds no connection to the control unit, and the fault memory cannot be cleared. Airbags and seatbelt pretensioners may then fail to trigger in an emergency.

The light indicates the defect. Even a light that comes on only occasionally must be taken seriously and checked.

If the diagnostic tool cannot establish a connection, the cause need not lie in the control unit. Only the read-out fault memory shows what the problem is.

Which vehicles is the 77960-TL0-B913-M1 fitted in?

The unit 77960-TL0-B913-M1 is fitted in these vehicles: Honda Accord 8th generation (2008-2015).

This list shows the vehicles recorded for this part number:

• Honda Accord 8th generation (2008-2015)

Comparing the part number on the label of the removed unit with this page only confirms that it is the correct unit. Have the fault memory read out beforehand. Only that record 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 77960-S84-A86, 77960-TA0-A01, 77960-TA0-A011M4, 77960-TA0-A02, 77960-TA0-L02.

How does the repair of the 77960-TL0-B913-M1 work?

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

Airbag24 tests the unit on the test bench, replaces defective components, erases the crash data and runs a function test. Then your own unit goes back to you.

The 3–4 working days cover only testing, repairing and checking 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-TL0-B913-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.