Airbag control unit with part number 89170-02660

What does the airbag control unit 89170-02660 do?

The airbag control unit 89170-02660 operates the airbags and seatbelt pretensioners in Toyota via the restraint system (SRS). It measures the signals from the impact sensors, decides within milliseconds in an accident what gets triggered, and checks the system constantly. After an accident it stores crash data and locks itself.

If it detects a fault, it activates the airbag warning light in the instrument cluster.

During driving, the unit works unnoticed in the background.

Why does the control unit 89170-02660 fail?

The most common cause is crash data from an earlier accident, even if no airbag fired in it. Other causes are aged components, cold solder joints, corrosion at plug connections and voltage spikes.

• Aged components in the electronics
• Cold solder joints
• Corrosion at plug connections
• Voltage spikes, for example with a weak battery or jump-starting

Crash data stays in the unit, and an ordinary diagnostic tool cannot remove it. Only reading out the fault memory reveals which cause is actually present.

How can you tell that the 89170-02660 is defective?

A fault shows first at the airbag warning light in the instrument cluster. Add to that error messages, a missing connection to the diagnostic tool and a fault memory that cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then fail to deploy.

The warning light checks itself on start-up. If it stays on afterwards or keeps coming back on, a check is advisable.

A loose plug or a damaged cable can also be the cause. The light alone does not reveal what the cause is.

Which vehicles is the 89170-02660 fitted in?

The control unit 89170-02660 is fitted in these vehicles: Toyota Corolla E140 (2006-2013) and E150 (2006-2013). The brand is Toyota.

Here is an overview of the vehicle details:

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

The label and the fault memory address different questions. Comparing the part number on the removed unit with this page only shows that you have the right unit. Have the fault memory read out in advance; only this log 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 89170-02810, 89170-02830, 89170-02840, 89170-02860, 89170-02870, 89170-02A90.

How does the repair of the 89170-02660 work?

First, have the fault memory read out, with the log enclosed. Only then disconnect the battery and remove the control unit. Then create a repair order online and send the unit off well packed.

Airbag24 checks the unit on the test bench, replaces defective components, clears stored crash data and runs a function test. You then get your own unit back.

Airbag24 usually needs 3–4 working days, counted exclusively for checking, repairing and testing.

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 89170-02660 get to Airbag24?

Either send a parcel to Airbag24, or UPS collects the unit for an extra charge. The return after repair also goes by UPS.

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