Airbag control unit with part number 77960-T90-A010-M1

What is the function of Airbag Control Unit 77960-T90-A010-M1?

The Airbag Control Unit 77960-T90-A010-M1 is the central control module of the Supplemental Restraint System (SRS) in the Honda Pilot. It processes signals from crash and acceleration sensors, monitors seatbelt pretensioners and seat occupancy detection, and, in the event of a collision, activates the ignition circuits for all airbags to provide optimal occupant protection.

Technically, the control unit contains a microcontroller and non-volatile memory (EEPROM/Flash). This memory stores vehicle configuration data, fault codes, and, in the case of a crash, critical crash data.

The module continuously performs self-tests, monitoring the resistance of ignition circuits, power supply voltage, and communication with external sensors. Any deviation from the specified parameters triggers a diagnostic trouble code (DTC), activating the SRS warning light on the dashboard.

Why does Airbag Control Unit 77960-T90-A010-M1 fail?

The most common cause of failure for the 77960-T90-A010-M1 control unit is the storage of crash data after an airbag deployment. This data permanently locks the system. Other potential issues include internal electronic faults—such as problems with voltage regulators, communication modules (CAN transceivers), or defective solder joints on the circuit board.

Even after a minor accident where only the seatbelt pretensioners have deployed, the control unit irrevocably writes crash data into its memory. This is a manufacturer‑imposed safety measure that prevents reusing the system without proper inspection. Once locked, these fault codes cannot be cleared using standard diagnostic tools.

Electronic failures can also occur without any crash. Components like voltage regulators or protective diodes may fail due to aging or voltage fluctuations in the vehicle’s electrical system. Similarly, moisture or vibrations can lead to corrosion or microscopic cracks at solder joints, causing communication issues or complete system failure.

How do you recognize a fault in 77960-T90-A010-M1?

A malfunction of the 77960-T90-A010-M1 control unit primarily manifests as a persistently illuminated airbag warning light (SRS lamp). Additionally, fault codes—especially following a crash—cannot be cleared. In some cases, the control unit becomes completely inaccessible via diagnostic equipment (no communication).

The most obvious sign is the constantly lit SRS warning light on the instrument cluster. It fails to turn off after starting the vehicle, indicating an active, safety‑critical fault within the airbag system.

A workshop diagnosis reveals entries in the fault memory such as “control unit defective,” “internal error,” or “crash data stored.” These errors are persistent and cannot be removed by simple clearing.

A more serious symptom is complete loss of communication: the diagnostic tool cannot establish a connection with the airbag control unit, making detailed troubleshooting impossible and pointing to a severe internal defect in the module.

In which vehicles is 77960-T90-A010-M1 installed?

The airbag control unit with part number 77960-T90-A010-M1 is specifically designed for the third-generation Honda Pilot. At Airbag24, we repair this control unit for both pre‑facelift and facelift models of this series. Repair offers a reliable alternative to costly new parts.

At Airbag24, we provide professional repair services for the 77960-T90-A010-M1 control unit, which is installed in the following vehicle models:

Honda Pilot (3rd Generation, model years 2015–2018)

Honda Pilot (3rd Generation Facelift, model years 2018–2022)

How is 77960-T90-A010-M1 professionally repaired?

Professional repair of the 77960-T90-A010-M1 control unit at Airbag24 includes reading and resetting stored crash data, along with a thorough examination of the electronics. Defective components on the circuit board are replaced, and a final functional test ensures full operability. We offer a 12‑month warranty on every repair.

After removing the control unit from the vehicle, it is sent to us. Our technicians first conduct an incoming inspection on a specialized test bench to verify the reported fault.

The core of the repair process is the so‑called “Crash Data Reset.” During this procedure, the control unit’s memory is read out, and crash information is professionally erased. Crucial vehicle configuration data is preserved, and necessary checksums are recalculated to ensure the control unit operates flawlessly.

If, in addition to the crash data, a hardware defect is present, defective electronic components such as voltage regulators or CAN transceivers are identified and replaced with new, high-quality parts. Following repair, a final test is performed to validate proper communication and all internal self-tests.

What are the benefits of repair?

Repairing the airbag control unit 77960-T90-A010-M1 offers a significant cost advantage over purchasing an expensive new part. Since the original vehicle coding is preserved, time-consuming reprogramming procedures are often unnecessary. With over 20 years of experience and a 12-month warranty, repair is a safe and sustainable solution.

The key benefit is cost savings. Repair is typically far more affordable than buying a new control unit directly from the vehicle manufacturer.

Because the original control unit is refurbished, the vehicle-specific configuration and coding remain intact. This avoids compatibility issues and eliminates the need for costly reprogramming of a new control unit to match your vehicle.

Repair also provides a quick solution. Thanks to specialized processes and extensive expertise, prompt turnaround is ensured, getting your vehicle back on the road swiftly. With a 12-month warranty on the work performed, you take no risks.

What shipping options are available?

Send your defective control unit to Airbag24 free of charge, or take advantage of convenient UPS pickup from your preferred location. For returning your repaired unit, we offer flexible options, including free standard UPS shipping or faster UPS Express delivery—both available with cash-on-delivery as well.

For sending your removed control unit to Airbag24, you have two choices: you can ship it yourself, or book our convenient UPS pickup service, which collects the package directly from your address.

After the repair is completed, several return shipping options are available:

Free standard UPS shipping (typically delivered within 1–3 business days).

UPS Express shipping (typically delivered within 1–2 business days).

Both shipping methods can optionally be arranged with cash-on-delivery. Alternatively, you may choose to pick up your repaired control unit directly from our facility.