Airbag control unit with part number 89170-02620

What does the airbag control unit 89170-02620 do?

The airbag control unit 89170-02620 forms the centre of the restraint system (SRS) of Toyota. It evaluates crash sensors and decides in an accident within milliseconds which airbags and seatbelt pretensioners to trigger. It also monitors the entire system continuously.

The sensor data converge in the unit, which checks them according to fixed rules.

It reports faults via the airbag warning light. After an accident it stores crash data and locks itself.

Why does the control unit 89170-02620 fail?

The most common cause is stored crash data that arises after an accident, even if no airbag was triggered. An ordinary diagnostic tool cannot delete this data. Other causes are aged components, cold solder joints, moisture and voltage spikes.

Further causes at a glance:

• electronic components that age over time
• cold solder joints
• moisture or corrosion at plug connections
• voltage spikes, for example from a weak battery or jump-starting

Crash data is considered the most common cause, but Airbag24 checks during the inspection whether it alone causes the failure.

How can you tell that the 89170-02620 is defective?

The airbag warning light in the instrument cluster indicates a defect as soon as it lights up permanently or intermittently. Fault messages in the instrument cluster, a missing connection to the diagnostic tool and a fault memory that cannot be cleared are added. In an emergency, airbags and seatbelt pretensioners may then not trigger.

The light coming on is a clear sign that the system has detected a fault.

Have the fault memory read out so that the message can be classified.

Which vehicles is the 89170-02620 fitted in?

The control unit 89170-02620 is fitted in these vehicles: Toyota Corolla E140 (2006-2013) and E150 (2006-2013). The assignment to this part number forms the basis.

The affected models are listed here.

• Toyota Corolla E140 (2006-2013)
• Toyota Corolla E150 (2006-2013)

Comparing the part number on the label with this page only ensures that you have the correct unit. Whether the control unit is defective or a connector or cable is the cause is shown by the fault memory. Therefore have it read out beforehand.

For the same vehicles, we also repair control units with the part numbers 89170-02810, 89170-02830, 89170-02840, 89170-02860, 89170-02870, 89170-02A90.

How does the repair of the 89170-02620 work?

First have the fault memory read out and attach the log, then disconnect the battery before the control unit is removed. Create the repair order online and send in the well-packed unit. Airbag24 usually processes the unit within 3–4 working days.

Airbag24 checks the unit on the test bench, repairs the defective components and deletes the stored crash data. The team then carries out a function test.

Finally you receive your own unit 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 89170-02620 get to Airbag24?

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

Enclose the printed repair order and pack the unit shock-resistant.