Airbag control unit with part number 77960-T5A-X611-M1

What does the airbag control unit 77960-T5A-X611-M1 do?

The airbag control unit 77960-T5A-X611-M1 coordinates the restraint system (SRS) in Honda. It evaluates the crash sensors, decides in an accident whether airbags and seatbelt pretensioners are triggered, and monitors the system without interruption. After an accident it stores crash data and locks itself.

The control unit shows faults via the airbag warning light in the instrument cluster, so the condition of the system remains readable.

The unit therefore serves not only to trigger the airbags but also for diagnosis.

Why does the control unit 77960-T5A-X611-M1 fail?

The most common cause is crash data from an earlier accident, even if no airbag was deployed in that accident. A normal diagnostic tool does not erase it. Other causes include aged electronic components, cold solder joints, moisture and corrosion at plug connectors, and voltage peaks such as from a weak battery or jump-starting.

This data cannot be removed with a normal diagnostic tool. The unit keeps it in memory, and reading it out changes nothing.

The other causes act over a longer period. Electronics age, solder joints can give way, and moisture and corrosion impair the contacts.

Voltage peaks occur, for example, when a battery is weak or when jump-starting.

How can you tell that the 77960-T5A-X611-M1 is defective?

The airbag warning light in the instrument cluster is an important warning sign: it lights up permanently or intermittently if a defect is present on the 77960-T5A-X611-M1. Additional signs include an error message in the instrument cluster, no connection to the diagnostic tool, and a fault memory that cannot be cleared.

Such signs mean that airbags and seatbelt pretensioners may not trigger in an emergency. Have the condition of the system checked promptly rather than ignoring the light.

An error message alone does not say what the cause is. Only the readout clarifies that.

Which vehicles is the 77960-T5A-X611-M1 fitted in?

A part number is linked to fixed vehicle assignments. The control unit 77960-T5A-X611-M1 is fitted in these vehicles: Honda Jazz GK (2013-2023).

Here is the assignment:

• Honda Jazz GK (2013-2023)

So compare the part number on the label of the removed unit with this page; this ensures that the unit matches. Have the fault memory read out before removal, because only this result 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-T5A-A212-M1, 77960-T5A-E010-M1, 77960-T5A-E011-M1, 77960-T5A-E020-M1, 77960-T5A-F010-M1, 77960-T5A-F011-M1.

How does the repair of the 77960-T5A-X611-M1 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and then remove the control unit. Finally, create a repair order online and send the unit in well packed.

Airbag24 first tests the unit on the test bench. Defective components are repaired; afterwards Airbag24 deletes stored crash data and carries out a function test before your own unit is returned.

As a rule, testing, repairing and checking takes 3–4 working days.

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-T5A-X611-M1 get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge. The return after repair is likewise made by UPS.

Put the printed repair order into the parcel. Pack the control unit shockproof so that it arrives safely.