Airbag control unit with part number 77960-THR-A010-M2

What does the airbag control unit 77960-THR-A010-M2 do?

As part of the SRS restraint system of Honda, the airbag control unit 77960-THR-A010-M2 controls the airbags and seatbelt pretensioners. In an impact it captures the signals from the crash sensors and decides within milliseconds on triggering. After an accident, it stores crash data and locks itself.

During operation the electronics monitor all connections. If they detect a fault, it is shown via the airbag warning light in the instrument cluster.

The system is designed so that evaluation and sensor queries work together without any noticeable delay.

Why does the control unit 77960-THR-A010-M2 fail?

The most common reason is crash data stored from an accident, even if no airbag has deployed; a standard diagnostic tool cannot erase it. Further causes include aged components, dry solder joints, moisture on plug connections and voltage spikes.

The stored data keeps the fault condition in place. In addition, the following triggers may be relevant:

• aged electronic components
• dry solder joints
• moisture or corrosion on plug connections
• voltage spikes, for example from a weak battery or a jump start

Which cause applies in an individual case only becomes clear once the unit has been examined.

How can you tell that the 77960-THR-A010-M2 is defective?

A defect is first indicated by the airbag warning light, as soon as it lights up permanently or intermittently. A fault message, or a fault memory that cannot be cleared, also counts as a sign. In an emergency, the airbags and seatbelt pretensioners may then not deploy.

These signs are usually noticeable:

• airbag warning light in the instrument cluster
• fault message in the instrument cluster
• diagnostic tool without a connection to the control unit
• fault memory that cannot be reset

Have the finding checked promptly.

Which vehicles is the 77960-THR-A010-M2 fitted in?

Before removal, check the assignment to your vehicle. Control unit 77960-THR-A010-M2 is fitted for Honda in these vehicles: Honda Odyssey 5th generation (from 2013).

The assigned vehicles are listed here:

• Honda Odyssey 5th generation (from 2013)

Comparing the part number on the label of the removed unit with this page only confirms that it is the correct unit. Reading out the fault memory shows whether the control unit is defective or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 77960-THR-A02, 77960-THR-A03, 77960-TK8-A011-M1, 77960-TK8-D01.

How does the repair of the 77960-THR-A010-M2 work?

Processing at Airbag24 usually takes 3–4 working days. First have the fault memory read out and attach the log. Then disconnect the battery, remove the control unit and create the repair order online.

The order of steps is binding for safety reasons: only once the fault memory has been read out does the battery get disconnected, and only after that does the unit come out of the vehicle.

At Airbag24 the unit is examined on the test bench, defective components are repaired, crash data is erased and a function test is carried out. Afterwards you receive your own unit back.

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-THR-A010-M2 get to Airbag24?

You send the unit as a parcel or book a UPS collection. The return after repair is made via UPS.

Enclose the printed repair order and pack the control unit so that it is shock-proof and arrives undamaged.