Airbag control unit with part number 77960-TS4-Z611-M1

What does the airbag control unit 77960-TS4-Z611-M1 do?

The airbag control unit 77960-TS4-Z611-M1 coordinates the restraint system (SRS) for Honda. It reads the crash sensors, decides in a collision within milliseconds on the triggering of airbags and seatbelt pretensioners, and monitors the system continuously.

If the unit detects a fault, it indicates this via the airbag warning light in the instrument cluster. It stores the fault information in memory so that a workshop can read it out.

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

Why does the control unit 77960-TS4-Z611-M1 fail?

In the 77960-TS4-Z611-M1, the most common cause is crash data stored after an accident, even if no airbag has deployed. Further causes are ageing electronics, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data cannot be erased with an ordinary diagnostic tool. Airbag24 removes it during the repair.

The other triggers concern mainly the electrics. Ageing components and cold solder joints belong to them, as does moisture at the plugs. A weak battery or a jump start can cause voltage spikes that affect the control unit.

How can you tell that the 77960-TS4-Z611-M1 is defective?

These signs point to a defect in the 77960-TS4-Z611-M1. In an emergency, airbags and seatbelt pretensioners may fail to trigger, so you should take the warning light seriously.

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

The warning light reports the fault before any check is due. A lit warning light is therefore reason enough to have the system checked.

Which vehicles is the 77960-TS4-Z611-M1 fitted in?

The control unit 77960-TS4-Z611-M1 is fitted in these vehicles: Honda Civic 9th generation (2011-2017). The most reliable check is the comparison with the part number on the removed unit.

These vehicles are assigned to the control unit:

• Honda Civic 9th generation (2011-2017)

Comparing the part number on the label with this page only makes sure that you have the correct unit. The cause of the fault is shown by the fault memory. Therefore have it read out before removal, because it shows whether the control unit itself is affected.

For the same vehicles, we also repair control units with the part numbers 77960-S02-A840-M3, 77960-SMG-G120-M1, 77960-TV0-G020-M4.

How does the repair of the 77960-TS4-Z611-M1 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and only afterwards remove the control unit 77960-TS4-Z611-M1. Next, create a repair order online and send the well-packed unit in. Processing at Airbag24 usually takes 3–4 working days.

At the test bench, Airbag24 checks the unit, replaces defective components, erases the stored crash data and carries out a function test. Your own unit then goes back to you.

The 3–4 working days apply only to checking, repairing and testing at Airbag24.

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-TS4-Z611-M1 get to Airbag24?

You send the control unit as a parcel to Airbag24, or book a UPS collection for an extra charge. After the repair, Airbag24 returns your own unit by UPS.

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