Airbag control unit with part number 77960-TS9-B010-M4

What does the airbag control unit 77960-TS9-B010-M4 do?

Honda fits the airbag control unit 77960-TS9-B010-M4 in the restraint system (SRS). The unit evaluates the crash sensors, determines within milliseconds in an accident which airbags and seatbelt pretensioners are triggered, and monitors the system throughout. It shows detected faults via the airbag warning light.

After an accident, the unit stores crash data and locks itself. In normal operation it remains unobtrusive, but continuously checks the connected components.

Why does the control unit 77960-TS9-B010-M4 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed; a standard diagnostic tool cannot remove it. Other causes include ageing components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Stored crash data remains until Airbag24 erases it during repair.

The other causes mainly involve ageing and moisture at the contacts, as well as stress from voltage spikes, for example with a weak battery or a jump start.

How can you tell that the 77960-TS9-B010-M4 is defective?

A defect shows itself through the airbag warning light in the instrument cluster, which stays on permanently or intermittently. Added to this are fault messages, a missing connection to the diagnostic tool and a fault memory that cannot be cleared.

In an emergency, the airbags and seatbelt pretensioners may then not deploy, so have such signs checked promptly.

• Warning light in the instrument cluster, permanently or intermittently on
• Fault message in the instrument cluster
• Diagnostic tool receives no connection
• Fault memory cannot be cleared

Which vehicles is the 77960-TS9-B010-M4 fitted in?

The control unit 77960-TS9-B010-M4 is fitted in these vehicles: Honda Civic 9th generation (2011-2017). Compare your car with this information before you remove anything.

The vehicles for this number are compiled here:

• Honda Civic 9th generation (2011-2017)

Compare the part number on the label of the removed unit with this page. It only confirms that you have the correct unit. Also have the fault memory read out, because only this result 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-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-TS9-B010-M4 work?

First have the fault memory read out, including the log; then disconnect the battery and remove the control unit. Next, create the repair order online and pack the unit before you send it. Airbag24 tests it on the test bench, corrects the damage to the components, erases the crash data and tests the result; this usually takes 3–4 working days.

The order of these steps is binding for your safety.

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-TS9-B010-M4 get to Airbag24?

Either you send the unit as a parcel, or you book a UPS collection for an extra charge. UPS handles the return after the repair on behalf of Airbag24.

Enclose the printed repair order with the parcel, and pack the control unit shockproof.