Airbag control unit with part number 77960-T0A-A012-M1

What does the airbag control unit 77960-T0A-A012-M1 do?

The airbag control unit 77960-T0A-A012-M1 is the central control unit of the SRS restraint system in Honda. It evaluates the crash sensors and determines in an accident which airbags and seatbelt pretensioners are triggered.

The evaluation takes place in milliseconds, as soon as the sensor reports an impact. In everyday use the unit monitors the entire system without a break.

After an accident, it stores crash data and locks itself. A repair is the only way to lift this lock. It reports faults via the airbag warning light.

Why does the control unit 77960-T0A-A012-M1 fail?

The most common cause on the 77960-T0A-A012-M1 is crash data stored after an accident, even if no airbag has deployed. A standard diagnostic tool cannot erase the data, so fault messages persist.

The stored crash data can mean that the fault cannot be cleared by resetting. Only after it has been removed does it become clear whether other causes are present.

Aged electronics, cold solder joints, moisture and corrosion at plug connections, and voltage spikes from a weak battery or a jump start can also lead to failure.

How can you tell that the 77960-T0A-A012-M1 is defective?

A defect on the 77960-T0A-A012-M1 shows up as the airbag warning light that stays on permanently or intermittently, as an error message in the instrument cluster, as a diagnostic tool without a connection to the control unit, and as a fault memory that cannot be cleared.

The warning light in the instrument cluster is the clearest warning sign. If it does not go out or only comes on intermittently, there may be a fault that does not resolve itself.

As long as the control unit is faulty, airbags and seatbelt pretensioners may fail to deploy in an emergency.

Which vehicles is the 77960-T0A-A012-M1 fitted in?

The part number 77960-T0A-A012-M1 is recorded for Honda. The control unit is fitted in these vehicles: Honda CR-V 4 RM (2012-2018).

The assignment is based on the part number. It is the part number you should rely on once the label comparison matches.

These models are assigned:

• Honda CR-V 4 RM (2012-2018)

Read out the fault memory before removal. Then compare the part number on the label of the removed unit with your details, so that it is clear 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-A012-M1 work?

Checking, repairing and testing at Airbag24 usually take 3–4 working days. Reading out the fault memory, removing the control unit and creating the repair order are your tasks beforehand.

Attach the protocol of the fault memory to the unit and disconnect the battery before removing it. Create the repair order online and pack the unit carefully.

At Airbag24 the unit is checked on the test bench, defective components are repaired, crash data is deleted and a function test is carried out. Your own unit then goes back 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-A012-M1 get to Airbag24?

You send the control unit 77960-T0A-A012-M1 as a parcel or book a UPS collection for an extra charge. Airbag24 returns it to you by UPS after the repair.

Place the printed repair order in the parcel and pack the unit shock-resistant.