Manufacturer: TOYOTA
Brand: DENSO
Model: 89661-02750
Function: Immo off
Emulator: No
Serial number: TN175700-5040
Immo off Denso 89661-02750
The DENSO 89661-02750 ECU is generally used in the Toyota Corolla E120/E130 series with a 1.6 petrol engine from 2002 to 2004. This ECU integrates an immobilizer system that prevents unauthorized engine starts by requiring a key signal match. However, in scenarios like ECU replacement, key loss, or vehicle conversion, the immobilizer can block ignition even with functional components.
Disabling the immobilizer—commonly known as “immo off“—offers a practical solution in motorsport, off-road builds, or when reusing ECUs without original keys. It’s particularly useful when no reprogramming tools are available to match the immobilizer with the vehicle.
Denso 89661-02750 Immo off: How to with CK Decode
Using CK Decode software, professionals and advanced users can easily perform an immo off procedure on the DENSO 89661-02750 ECU. This process allows the vehicle to start without requiring immobilizer authentication, saving time and eliminating key matching errors.
- Download CKDecode through this link
- Click on the Functions Tab and select TOYOTA – DENSO – DENSO ALL VERSION – Immo off
- Read MPC with your interface and upload the file
- Click Process button
- Write the file processed by CKDecode
