Airbag control unit with part number 77960-TF0-H832-M3

What does the airbag control unit 77960-TF0-H832-M3 do?

The 77960-TF0-H832-M3 is the airbag control unit of the restraint system in Honda vehicles. It processes the signals from the crash sensors and triggers the correct airbags and seatbelt pretensioners within a fraction of a second in a crash.

In the background it monitors the entire system. Faults are shown via the airbag warning light in the instrument cluster, so that a malfunction becomes visible early.

After an accident the unit stores crash data and then locks itself. This fact shapes the rest of the repair process, which the following sections describe.

Why does the control unit 77960-TF0-H832-M3 fail?

The most common cause is crash data from a previous accident, even if no airbag was triggered. Other causes include aged components, cold solder joints, moisture and corrosion on connectors, and voltage spikes in the vehicle electrical system.

Crash data cannot be erased with a standard diagnostic tool. Airbag24 erases it as part of the repair, so that the memory is clear afterwards.

Over time, ageing, cold solder joints and moisture weaken the electronics. Voltage spikes from the vehicle electrical system are a further cause and put additional strain on the components.

How can you tell that the 77960-TF0-H832-M3 is defective?

The airbag warning light in the instrument cluster stays on constantly or only intermittently. In addition, an error message appears, the diagnostic tool cannot make contact with the control unit, and the fault memory cannot be cleared.

With such findings, airbags and seatbelt pretensioners may not trigger in an emergency. Please have the system checked promptly.

The warning light therefore shows the defect directly.

Which vehicles is the 77960-TF0-H832-M3 fitted in?

Check your vehicle registration document to see whether your own car is one of them. The 77960-TF0-H832-M3 is fitted in these vehicles: Honda Jazz GE (2008-2015).

The vehicles recorded for this part number are shown here:

• Honda Jazz GE (2008-2015)

Compare the part number on the label of the removed unit with this page. This only confirms that it is the correct unit. Also have the fault memory read out, because only the result shows whether the control unit is defective or whether a connector 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-H832-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 pack it well.

At Airbag24 the unit is examined on the test bench. Defective components are repaired, the crash data is erased and a final functional test is carried out.

Processing at Airbag24 usually takes 3–4 working days before your unit is sent 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-TF0-H832-M3 get to Airbag24?

You send the control unit 77960-TF0-H832-M3 as a parcel or optionally book a UPS collection for an extra charge. After the repair, Airbag24 sends it back by UPS.

Put the printed repair order into the parcel and pack the unit shockproof.