Airbag control unit with part number 77960-TS0-B413-M1

What does the airbag control unit 77960-TS0-B413-M1 do?

The airbag control unit 77960-TS0-B413-M1 controls the restraint system (SRS) with all airbags and seatbelt pretensioners for Honda. In a crash it evaluates the signals from the crash sensors and decides within milliseconds on triggering. It also monitors the system continuously and reports faults via the airbag warning light.

In everyday use the control unit works unobtrusively in the background until a fault occurs.

After an accident it stores crash data and locks itself.

Why does the control unit 77960-TS0-B413-M1 fail?

Most often the cause is crash data from an earlier accident, even if no airbag has deployed. A normal diagnostic tool cannot erase it. Other causes are ageing, moisture, corrosion and voltage spikes.

An accident without a deployed airbag can also leave such data behind, which is why reading it out is worthwhile in every case.

• ageing electronic components
• cold solder joints
• moisture and corrosion at plug connections
• voltage spikes, for example from jump-starting

Whether any of these causes applies is shown only by reading out the fault memory, not by looking at the unit.

How can you tell that the 77960-TS0-B413-M1 is defective?

The airbag warning light in the instrument cluster lights up constantly or only intermittently. In addition there is a fault message, a diagnostic tool without a connection to the control unit, and a fault memory that cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then not be able to trigger.

A lit warning light is the clearest sign; in that case have the system checked promptly.

Whether the control unit or the wiring is affected is determined only by the diagnosis.

Which vehicles is the 77960-TS0-B413-M1 fitted in?

The 77960-TS0-B413-M1 is fitted in these vehicles: Honda Civic 9th generation (2011-2017).

The assignment to this part number is as follows:

• Honda Civic 9th generation (2011-2017)

Check the label of the removed unit against this page; that only shows whether both numbers match. Have the fault memory read out before removal, because only that result shows whether the control unit itself 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-TS4-U411-M1, 77960-TS4-U811-M2, 77960-TS4-Z611-M1, 77960-TS6-H711-M1, 77960-TT0-T011-M1, 77960-TT0-Y610-M2.

How does the repair of the 77960-TS0-B413-M1 work?

First have the fault memory read out and attach the log to the parcel; only then disconnect the battery and remove the control unit. Create the repair order online and send in the well-packed unit. At Airbag24, checking, repair and function test usually take 3–4 working days.

Airbag24 checks the unit on the test bench, replaces defective components, erases stored crash data and carries out a function test. The unit then goes back to you.

The time specification refers solely to the work at Airbag24; removal and shipping are not included.

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-TS0-B413-M1 get to Airbag24?

One parcel is enough: pack the unit, and Airbag24 sends it back to you by UPS after the repair. Alternatively, you can book a UPS collection for an extra charge.

Enclose the printed repair order with the parcel and pack the unit shockproof.