Airbag control unit with part number 77960-T5C-J810-M1

What does the airbag control unit 77960-T5C-J810-M1 do?

The airbag control unit 77960-T5C-J810-M1 controls the restraint system (SRS) of Honda. It evaluates the signals from the crash sensors, determines in an accident within fractions of a second which airbags and seatbelt pretensioners to trigger, and monitors the system continuously. It reports detected faults via the airbag warning light.

Sensor data is evaluated throughout the entire journey. The unit constantly compares the readings with stored limits and triggers only when an impact exceeds the threshold.

After an accident the unit stores crash data and locks itself. The lock is only lifted by the repair.

Why does the control unit 77960-T5C-J810-M1 fail?

The most common cause is crash data stored after an accident, even if no airbag has triggered; a normal diagnostic tool cannot clear it. Other causes can be summarised in a few points:

• aged electronic components,
• cold solder joints on the circuit board,
• moisture and corrosion at plug connectors,
• voltage spikes, for example from a weak battery or a jump start.

The crash data remains stored in the unit, regardless of how well the vehicle continues to drive after the accident. A diagnostic tool cannot reach this data.

How can you tell that the 77960-T5C-J810-M1 is defective?

A defect shows as an airbag warning light in the instrument cluster that lights permanently or intermittently, as an error message in the instrument cluster, as a diagnostic tool without connection to the control unit, and as a fault memory that cannot be cleared.

The airbag warning light in the instrument cluster indicates a fault in the restraint system as soon as it lights permanently or intermittently. A fault can also show itself through an error message on the display. If the diagnostic tool cannot establish a connection to the control unit, or the fault memory remains despite a clearing attempt, have the fault checked promptly. Until then, airbags and seatbelt pretensioners may not be able to trigger in an emergency.

Which vehicles is the 77960-T5C-J810-M1 fitted in?

The control unit 77960-T5C-J810-M1 is fitted in these vehicles: Honda Jazz GK (2013-2023).

The vehicles for which this control unit is listed are shown here:

• Honda Jazz GK (2013-2023)

Comparing the part number on the label of the removed unit with this page only confirms that it is the right unit. It does not clarify whether the control unit is defective. Therefore have the fault memory read out beforehand, because the log 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 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-T5C-J810-M1 work?

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

At Airbag24 the unit is tested on the test bench and defective components are replaced, followed by a function test. Stored crash data is deleted. Processing usually takes 3–4 working days; afterwards your own 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-T5C-J810-M1 get to Airbag24?

You send the unit in as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it by UPS. Put the printed repair order into the parcel and pack the unit shockproof.

A stable packaging protects the control unit along the entire transport route.