Airbag control unit with part number 89170-02670

What does the airbag control unit 89170-02670 do?

The airbag control unit 89170-02670 coordinates the restraint system (SRS) of Toyota. It processes the signals from the crash sensors continuously and selects the airbags and seatbelt pretensioners to be triggered within milliseconds in an accident. After an accident it records crash data and locks itself.

If it detects a fault, it reports this via the airbag warning light in the instrument cluster.

It has nothing to do with the engine or the brakes; its task is the protection of the occupants.

Why does the control unit 89170-02670 fail?

Most often the cause is crash data that remains stored after an accident, even if no airbag has been triggered; a normal diagnostic tool cannot delete it. Further possible causes are aged electronics, cold solder joints, moisture and corrosion at plug connections, and voltage spikes such as those from a weak battery or a jump start.

Crash data is also created by events where the airbags are not triggered. The control unit registers the incident and stores the data, and the fault stays in the memory.

The other causes are of a general nature: electronics age, solder joints can become cold, and moisture or corrosion damage plug contacts. Voltage spikes from a weak battery or a jump start also stress the circuit.

How can you tell that the 89170-02670 is defective?

A defect shows itself through several signs: the airbag warning light in the instrument cluster lights up, an error message appears, the diagnostic tool does not find the control unit, or the fault memory cannot be cleared. In this case the airbags and seatbelt pretensioners may possibly fail to deploy in an emergency.

The signs in detail:

• The airbag warning light in the instrument cluster stays on permanently or intermittently.
• An error message appears in the instrument cluster.
• The diagnostic tool cannot establish a connection to the control unit.
• The fault memory cannot be cleared.

Any one of these signs is reason enough to have the vehicle checked.

Which vehicles is the 89170-02670 fitted in?

The control unit 89170-02670 is fitted in these vehicles: Toyota Corolla E140 (2006-2013) and E150 (2006-2013).

Below you will see the vehicles that are recorded with us under this number.

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

Compare the number on the label of the removed unit with this page. This ensures that you have the correct unit; it says nothing about the cause. Whether the control unit itself is defective or a connector or cable is the cause is clarified by the fault memory, which you should have 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 89170-02670 work?

First have the fault memory read out and enclose the report; then disconnect the battery and remove the control unit. At Airbag24, checking, repair and function test usually take 3–4 working days.

Afterwards create the repair order online and pack the unit well before sending it. Airbag24 then checks the unit on the test bench, replaces defective components, deletes the stored crash data and carries out a function test.

The sequence of removal is set for safety reasons.

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 89170-02670 get to Airbag24?

You can send a parcel yourself; alternatively you book a UPS collection for an extra charge. The return after the repair is made via UPS.

The printed repair order goes into the package, and the unit is packed shock-proof.