Airbag control unit with part number 77960-T6A-H140-M2

What does the airbag control unit 77960-T6A-H140-M2 do?

For the restraint system (SRS) of Honda, the airbag control unit 77960-T6A-H140-M2 controls the triggering. It evaluates the signals from the crash sensors, selects the suitable airbags and seatbelt pretensioners within milliseconds in an accident, and checks the system continuously. After an accident it stores crash data and locks itself.

Monitoring runs in the background, and every fault detected is recorded in the fault memory. In this way the defect is documented as soon as the unit detects it.

Why does the control unit 77960-T6A-H140-M2 fail?

Stored crash data is the most common cause, even when no airbag has fired. A normal diagnostic tool cannot remove it. Other triggers are aged components, cold solder joints, moisture and corrosion on plugs, and voltage spikes such as with a weak battery or jump start; Airbag24 erases the crash data during the repair.

The crash data sits in the memory of the control unit. All other causes affect the electronics and their connections, with moisture and corrosion attacking the plug connections.

How can you tell that the 77960-T6A-H140-M2 is defective?

The airbag warning light in the instrument cluster indicates the fault by lighting up permanently or intermittently. Other signs include an error message, no contact to the diagnostic tool, and a fault memory that cannot be cleared. If this is the case, airbags and seatbelt pretensioners may possibly not trigger in an emergency.

• Airbag warning light that lights up permanently or intermittently
• Error message in the instrument cluster
• Diagnostic tool with no connection to the control unit
• Fault memory that cannot be cleared

The warning comes from the system itself and not from a guess. Have it checked promptly.

Which vehicles is the 77960-T6A-H140-M2 fitted in?

The control unit 77960-T6A-H140-M2 is fitted in these vehicles: Honda Odyssey 5th generation (from 2013).

Listed below are the vehicles that are on record for this part number.

• Honda Odyssey 5th generation (from 2013)

Comparing the part number on the label of the removed unit with this page only confirms the identity of the unit. Have the fault memory read out beforehand, because only the result clarifies 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-THR-A02, 77960-THR-A03, 77960-TK8-A011-M1, 77960-TK8-D01.

How does the repair of the 77960-T6A-H140-M2 work?

The sequence begins with reading out the fault memory with the log enclosed, followed by disconnecting the battery and removal. Then create a repair order online and send in the well-packed unit. Processing at Airbag24 usually takes 3–4 working days.

Removal is carried out only after the battery has been disconnected; safety when working on the airbag system requires this.

At Airbag24 the unit is examined on the test bench, defective components are repaired, and the crash data is erased by Airbag24 as well. A function test follows last, after which your own unit is returned 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-T6A-H140-M2 get to Airbag24?

You can send the control unit 77960-T6A-H140-M2 as a parcel or book a UPS collection for an extra charge. After the repair Airbag24 sends it back to you by UPS.

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