Airbag control unit with part number 77960-TF0-Y632-M3

What does the airbag control unit 77960-TF0-Y632-M3 do?

The airbag control unit 77960-TF0-Y632-M3 controls the restraint system (SRS) of Honda. It evaluates impact signals, decides in an accident within milliseconds on the triggering of airbags and seatbelt pretensioners, and checks the system permanently. It shows detected faults via the airbag warning light.

The evaluation runs throughout the journey. Connections and output stages are checked continuously, so that deviations are noticed early.

After a crash, it stores crash data and locks itself.

Why does the control unit 77960-TF0-Y632-M3 fail?

Crash data written to the unit after an accident is most often the cause, even without an airbag firing; a standard diagnostic tool does not remove it. Ageing electronic components, cold solder joints, moisture and corrosion, and voltage spikes are also possible.

Crash data stays in the unit even when nothing can be seen from outside.

Further causes at a glance:

• ageing electronic components
• cold solder joints
• moisture and corrosion at plug connections
• voltage spikes, for example from a weak battery or a jump start

How can you tell that the 77960-TF0-Y632-M3 is defective?

A defect shows itself through the airbag warning light, which stays on permanently or only intermittently, and through a fault message in the instrument cluster. The diagnostic tool cannot reach the control unit, and the fault memory cannot be cleared. In this state, airbags and seatbelt pretensioners could fail to trigger in an emergency.

Signs to watch for:

• airbag warning light stays on continuously
• airbag warning light comes on only now and then
• fault message in the instrument cluster
• no connection to the control unit via the diagnostic tool
• fault memory cannot be cleared

Even if the car runs normally day to day, the warning must be taken seriously.

Which vehicles is the 77960-TF0-Y632-M3 fitted in?

The airbag control unit 77960-TF0-Y632-M3 is fitted in these vehicles: Honda Jazz GE (2008-2015).

The listing comes from our records and names the vehicles stored with this unit.

• Honda Jazz GE (2008-2015)

Proceed in two steps. Comparing the part number on the label with this page only ensures that you have the right unit. Reading out the fault memory, on the other hand, shows whether the control unit itself or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 5WK43461, 77960-SAA-G821-M1, 77960-SEG-G821-M1, 77960-TF0-G820-M3, 77960-TF0-G821.

How does the repair of the 77960-TF0-Y632-M3 work?

First have the fault memory read out and attach the log to the unit. Then disconnect the battery, remove the control unit, create a repair order online and send the unit in packed. Airbag24 checks and repairs the unit, erases the crash data and tests the function.

You follow this order because it serves safety. The control unit is only removed once the battery has been disconnected.

At Airbag24, checking, repair and testing are scheduled for 3–4 working days as a rule. Afterwards your own unit 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-TF0-Y632-M3 get to Airbag24?

You send the unit as a parcel or arrange a UPS collection for an extra charge. After the repair, Airbag24 sends it back to you by UPS. A printout of the repair order goes into the parcel, and the unit is packed shock-proof.

A firm outer packaging with padding keeps vibration away from the circuit board in transit.