Airbag control unit with part number 77960-TR3-X011-M1

What does the airbag control unit 77960-TR3-X011-M1 do?

In Honda, the airbag control unit 77960-TR3-X011-M1 belongs to the restraint system (SRS) and is its central control unit. The signals from the crash sensors converge there; in an accident it decides within milliseconds on the triggering of airbags and seatbelt pretensioners.

The device monitors the entire system continuously. Detected faults are reported via the airbag warning light.

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

Why does the control unit 77960-TR3-X011-M1 fail?

The most common cause is crash data stored after an accident, even when no airbag was triggered. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

A normal diagnostic tool cannot erase the crash data; Airbag24 handles that during the repair.

Voltage spikes arise, for example, from a weak battery or jump-starting. Which cause applies in the individual case is shown by the test on the test bench.

How can you tell that the 77960-TR3-X011-M1 is defective?

The most important sign is the airbag warning light in the instrument cluster, which lights up permanently or intermittently. Accompanying it may be an error message, a diagnostic tool without connection, and a fault memory that cannot be cleared.

Typical signs are:

• The airbag warning light stays on permanently.
• The warning light comes on intermittently.
• A message in the instrument cluster.
• No communication between the diagnostic tool and the control unit.
• A fault memory that cannot be cleared.

With these signs, airbags and seatbelt pretensioners may not trigger in an emergency. Therefore bring the vehicle in for a check promptly.

Which vehicles is the 77960-TR3-X011-M1 fitted in?

The airbag control unit 77960-TR3-X011-M1 is fitted in these vehicles: Honda Civic 9th generation (2011-2017).

The vehicles from our data in detail:

• Honda Civic 9th generation (2011-2017)

The part number is printed on the label of the removed unit, and it can be compared with this page. This only establishes that it is the right unit. Have the fault memory read out beforehand, because only this result shows whether the control unit itself is defective or whether a wire or a connector 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-TR3-X011-M1 work?

Start by having the fault memory read out, with the log attached. Then disconnect the battery and remove the control unit. Finally, send it in well packed after creating an online repair order.

Airbag24 tests the unit on the test bench, repairs defective components, erases the crash data and runs a function test. Afterwards your own unit is returned to you.

Processing usually takes 3–4 working days; this time applies only to testing, repairing and function-checking.

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-TR3-X011-M1 get to Airbag24?

The control unit goes to Airbag24 as a package, or you book a UPS collection for an extra charge. After the repair, Airbag24 sends it back by UPS.

Include the printed repair order in the package. Pack the control unit so that it is shockproof.