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2. Immobilizer, cars with Trionic T7 engine management system: Diagnostics

WARNING: This page is about a different car, the 2001 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.

The immobilizer must be reprogrammed in TWICE after changing TWICE, MIU or the Trionic control module. The engine will not start unless this is carried out and diagnostic trouble code P1460 will be generated in Trionic T7.

If the immobilizer is not reprogrammed in TWICE, it will generate the following diagnostic trouble codes: DTC B1780 after changing T7, DTC B1782 after replacing MIU.

If the diagnostic trouble code is generated even though programming has been performed, fault diagnosis must be carried out on the immobilization function in the TWICE.

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