Airbag control unit with part number 77960-TR0-P614-M1

What does the airbag control unit 77960-TR0-P614-M1 do?

The airbag control unit 77960-TR0-P614-M1 coordinates the restraint system (SRS) for Honda. It processes the signals from the crash sensors, decides in an impact within milliseconds whether airbags and seatbelt pretensioners are triggered, and monitors the system continuously. It reports faults via the airbag warning light; after an accident it stores crash data and locks itself.

In doing so, it checks the connections to the sensors and seatbelt pretensioners continuously.

Why does the control unit 77960-TR0-P614-M1 fail?

Stored crash data is the most common cause of failure of the control unit 77960-TR0-P614-M1, even if no airbag has deployed; it cannot be erased with a standard diagnostic tool. Other causes to consider are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data is the recording from the time of the impact. It remains in memory until it is deliberately erased.

The other causes are rather gradual processes. Components age, solder joints can go cold, and moisture promotes corrosion on plugs.

Voltage spikes, for example with a weak battery or a jump start, can put additional strain on circuits.

How can you tell that the 77960-TR0-P614-M1 is defective?

A defect shows up as the airbag warning light in the instrument cluster lighting up permanently or intermittently, and as a fault message in the instrument cluster. The diagnostic tool cannot reach the control unit 77960-TR0-P614-M1, or the fault memory cannot be cleared. In this state, airbags and seatbelt pretensioners may not deploy in an emergency.

Typical signs:

• Airbag warning light on permanently or intermittently
• Fault message in the instrument cluster
• Diagnostic tool without connection to the control unit
• Fault memory cannot be cleared

As soon as any of these occurs, have the fault memory read out.

Which vehicles is the 77960-TR0-P614-M1 fitted in?

The airbag control unit 77960-TR0-P614-M1 is fitted in these vehicles: Honda Civic 9th generation (2011-2017).

The following list shows the vehicles on record for this control unit.

• Honda Civic 9th generation (2011-2017)

Compare the part number on the label of the removed unit with this page. This ensures that it is the correct unit. Have the fault memory read out beforehand, as only this shows whether the control unit itself is defective or 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-TR0-P614-M1 work?

First have the fault memory read out and attach the log. Then disconnect the battery and only afterwards remove the control unit 77960-TR0-P614-M1. Then create a repair order online and send the unit in well packed.

The sequence is fixed for safety reasons.

At Airbag24 the unit is examined on the test bench, defective components are replaced, stored crash data is erased and a function test is carried out. Processing takes 3–4 working days as a rule, after which your own unit is returned.

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-TR0-P614-M1 get to Airbag24?

You send the unit as a parcel or book UPS collection for an extra charge. The return after the repair is made by UPS.

Enclose the printed repair order and pack the control unit 77960-TR0-P614-M1 shock-proof.