Airbag control unit with part number 77960-TF0-E832-M3

What does the airbag control unit 77960-TF0-E832-M3 do?

The airbag control unit 77960-TF0-E832-M3 forms the central control unit of the restraint system (SRS) of Honda. It reads the signals from the crash sensors and, in an emergency, decides within milliseconds which airbags and seatbelt pretensioners are triggered. Faults in the system are shown via the airbag warning light.

The evaluation runs in the background. If the unit detects a fault, it creates an entry in the fault memory that a diagnostic tool can read out.

After an accident the unit stores crash data and locks itself. The next section explains what this means for the repair.

Why does the control unit 77960-TF0-E832-M3 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed. A normal diagnostic tool cannot erase it. Further causes are aged components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Airbag24 erases the crash data during the repair.

• aged electronic components
• cold solder joints on the circuit board
• moisture and corrosion at plug connections
• voltage spikes, for example from a weak battery or after jump-starting

How can you tell that the 77960-TF0-E832-M3 is defective?

A defect shows up as the airbag warning light, which stays on constantly or intermittently, and as a fault message in the instrument cluster. Add to this a missing connection to the diagnostic tool and a fault memory that cannot be cleared. Airbags and seatbelt pretensioners may then fail to trigger in an emergency.

Typical signs at a glance:

• Airbag warning light in the instrument cluster stays on constantly
• Airbag warning light lights up only intermittently
• Fault message in the instrument cluster
• Diagnostic tool finds no connection to the control unit
• Fault memory cannot be cleared

The warning light therefore indicates the finding itself. If it stays on, an early look into the fault memory is worthwhile.

Which vehicles is the 77960-TF0-E832-M3 fitted in?

At Honda, the assignment to vehicles follows this part number. The 77960-TF0-E832-M3 is fitted in these vehicles: Honda Jazz GE (2008-2015).

The models in which this unit was installed are listed here:

• Honda Jazz GE (2008-2015)

Compare the part number on the label of the removed unit with this page. This only confirms that you have the right control unit in front of you. Additionally have the fault memory read out, because only this result shows whether the control unit itself is the cause or a plug or cable is.

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-E832-M3 work?

Have the fault memory read out first and attach the log. Then disconnect the battery before you remove the control unit. Next, create a repair order online and send the unit in well packed. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 checks the unit on the test bench and renews defective components. The stored crash data is then erased and a function test is carried out before your own unit is sent 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-E832-M3 get to Airbag24?

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

Enclose the printed repair order in the parcel and pack the control unit shock-proof.