Airbag control unit with part number 77960-TM0-H440-M3

What does the airbag control unit 77960-TM0-H440-M3 do?

The 77960-TM0-H440-M3 forms the control centre of the SRS restraint system in Honda. From the signals of the crash sensors it calculates, within milliseconds, which airbags and seatbelt pretensioners are triggered in a crash.

It also checks the system for faults constantly and displays them via the airbag warning light.

Crash data is stored after an accident, and the unit then locks itself.

Why does the control unit 77960-TM0-H440-M3 fail?

Stored crash data is the most common cause in the 77960-TM0-H440-M3, even if no airbag was triggered. Aged electronic components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes are also involved.

Crash data cannot be erased with a standard diagnostic tool. Airbag24 erases it during the repair.

Aged components and cold solder joints affect the circuit board in the unit itself. Moisture, corrosion and voltage spikes, for example from a weak battery or a jump start, are also among the causes.

How can you tell that the 77960-TM0-H440-M3 is defective?

Typical signs on the 77960-TM0-H440-M3 are an airbag warning light that stays on permanently or intermittently, and a fault message in the instrument cluster.

• Airbag warning light in the instrument cluster, on permanently or intermittently
• Fault message in the instrument cluster
• Diagnostic tool cannot establish a connection to the control unit
• Fault memory cannot be cleared

With these signs, it can happen in an emergency that airbags and seatbelt pretensioners do not trigger. Take the warning seriously, even if the vehicle otherwise drives normally.

Which vehicles is the 77960-TM0-H440-M3 fitted in?

The 77960-TM0-H440-M3 is fitted in these vehicles: Honda CR-V 4 RM (2012-2018).

The list below names the models to which the part number is assigned.

• Honda CR-V 4 RM (2012-2018)

Compare the part number on the label of the removed unit with this page. This only shows that you have the correct unit. Have the fault memory read out beforehand, because only this result shows whether the control unit 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-T0A-3070-M4, 77960-T0A-A012-M1, 77960-T0A-A013-M1, 77960-T0A-A210-M1, 77960-T0A-A212-M1, 77960-T0A-A230-M1.

How does the repair of the 77960-TM0-H440-M3 work?

Checking, repairing and testing at Airbag24 usually takes 3–4 working days. Before that, have the fault memory read out and enclose the log, disconnect the battery, only then remove the 77960-TM0-H440-M3, and send it in well packed with a repair order created online.

Airbag24 checks the unit on the test bench, repairs defective components, erases stored crash data and carries out a function test. 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-TM0-H440-M3 get to Airbag24?

You send the 77960-TM0-H440-M3 as a parcel or book a UPS collection for an extra charge, and Airbag24 returns the unit by UPS after the repair.

The printed repair order goes into the parcel, and the control unit must be packed shock-proof.