Airbag control unit with part number 77960-T0A-X011-M1

What does the airbag control unit 77960-T0A-X011-M1 do?

The airbag control unit 77960-T0A-X011-M1 is the central control unit of the restraint system (SRS) for Honda. It evaluates the signals from the crash sensors and decides in an accident within milliseconds which airbags and seatbelt pretensioners are triggered. It reports faults via the airbag warning light.

The crash sensors continuously supply the control unit with measured values. From these, it determines whether an accident has occurred and how severe it was. At the same time, it monitors the wiring of the firing circuits.

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

Why does the control unit 77960-T0A-X011-M1 fail?

The most common cause is crash data stored after an accident, even if no airbag was triggered; a standard diagnostic tool cannot erase it. Other possible causes are ageing electronic components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes.

Crash data remains stored in the unit after an accident, even if no airbag fired. An attempt to erase it with the diagnostic tool has no effect, so it does not help.

The remaining causes tend to develop gradually. Components age, solder joints can go cold, and moisture at plug connectors causes corrosion.

Voltage spikes, for example from a weak battery or from starting with external power, can also affect the electronics.

How can you tell that the 77960-T0A-X011-M1 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, a fault message appears in the instrument cluster, the diagnostic tool gets no connection to the control unit, and the fault memory cannot be cleared.

• Airbag warning light lights up permanently or flickers
• Fault message in the instrument cluster
• No connection between the diagnostic tool and the control unit
• Fault memory cannot be cleared

If there is a defect, airbags and seatbelt pretensioners may fail to trigger in an emergency. The warning light indicates it, so follow up on the signal promptly.

Which vehicles is the 77960-T0A-X011-M1 fitted in?

The airbag control unit 77960-T0A-X011-M1 is fitted in these vehicles: Honda CR-V 4 RM (2012-2018). Whether it suits your own vehicle is shown by comparing it with this list.

You will find the assignment in detail here.

• Honda CR-V 4 RM (2012-2018)

Compare the part number on the label of the removed unit with this page. This only ensures that it is the right unit. Also have the fault memory read out, because only the log 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 5WK43782, 77960-SWA-G212-M4, 77960-SWA-G214-M4, 77960-T1G-G920-M4.

How does the repair of the 77960-T0A-X011-M1 work?

First have the fault memory read out and attach the log. Then disconnect the battery and only after that remove the control unit 77960-T0A-X011-M1. Afterwards, create a repair order online and send the well-packed unit in. Testing, repairing and the function test at Airbag24 usually take 3–4 working days.

The order of these steps is fixed for safety reasons. Disconnecting the battery comes before removal.

Airbag24 tests the unit on the test bench, repairs defective components, deletes the stored crash data and carries out a function test. The 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-T0A-X011-M1 get to Airbag24?

You send the control unit 77960-T0A-X011-M1 to Airbag24 as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 sends it back to you by UPS.

Put the printed repair order in the parcel and pack the unit shockproof, so that it survives transport undamaged.