Airbag control unit with part number 77960-TK8-A110-M1

What does the airbag control unit 77960-TK8-A110-M1 do?

The airbag control unit 77960-TK8-A110-M1 controls the restraint system (SRS) on Honda: it evaluates the crash sensors, determines in the event of an accident which airbags and seatbelt pretensioners are triggered, and monitors the system continuously. After an accident it stores crash data and locks itself.

Detected faults are shown by the control unit via the airbag warning light, which sits in the instrument cluster.

The control unit is thus the hub between sensors, seatbelt pretensioners and airbags.

Why does the control unit 77960-TK8-A110-M1 fail?

On the 77960-TK8-A110-M1 the most common cause is stored crash data after an accident, even if no airbag has triggered. Clearing this data is often not possible on this control unit; if you wish, contact Airbag24 briefly before sending it in. Further causes include ageing components, cold solder joints, moisture at plug connections and voltage spikes.

The data remain in the unit as soon as the control unit has registered an accident, regardless of whether an airbag triggers.

Voltage spikes arise, for example, with a weak battery or with a jump start; moisture and corrosion act on plug connections. Ageing components and cold solder joints also belong among the causes.

How can you tell that the 77960-TK8-A110-M1 is defective?

A defect in the 77960-TK8-A110-M1 shows itself through the airbag warning light in the instrument cluster, which lights up permanently or intermittently. Added to this are fault messages in the instrument cluster, no connection to the diagnostic tool, and a fault memory that cannot be cleared. Then the airbags and seatbelt pretensioners may not trigger in an emergency.

Intermittent lighting is no all-clear. If such signs appear, have the system checked promptly.

Which vehicles is the 77960-TK8-A110-M1 fitted in?

This control unit 77960-TK8-A110-M1 is fitted in these vehicles: Honda Odyssey 4th generation (2008-2013) and 5th generation (from 2013). The information refers to the part number, not to individual equipment variants.

The models for this number are listed here:

• Honda Odyssey 4th generation (2008-2013)
• Honda Odyssey 5th generation (from 2013)

You confirm the part number on the label of the removed unit to make sure you have the correct unit. The fault memory must be read out before removal, because it 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 77960-SHJ-A013-M1, 77960-SHJA020M1, 77960-SHJC-012-M1, 77960-THR-A02, 77960-THR-A03, 77960-TK8-A011-M1.

How does the repair of the 77960-TK8-A110-M1 work?

You first have the fault memory read out and enclose the log. Then you disconnect the battery, and only then remove the 77960-TK8-A110-M1 and create a repair order online. Afterwards you send in the well-packed unit; allow 3–4 working days as a rule for inspection and repair at Airbag24.

Airbag24 checks the unit on the test bench, replaces defective components and carries out a function test. Only then does your own unit go back to you.

If you wish to have the crash data deleted, contact Airbag24 briefly before sending.

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-TK8-A110-M1 get to Airbag24?

For dispatch, enclose the printed repair order, pack the control unit 77960-TK8-A110-M1 shock-proof and send it as a parcel. Alternatively, book a UPS collection for an extra charge. After the repair Airbag24 sends it back to you by UPS.

The unit should not lie unprotected in the box; shock-proof packaging is part of this.