Control Module Outputs For The Immobilizer, Bus (Trionic T7)

WARNING: This page is about a different car, the 2002 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Communication Diagram - Control Module Outputs For Immobilizer, Bus (Trionic T7)

Courtesy of SAAB-SCANIA OF AMERICA, INC.

Immobilizer (on/off) used by MIU (540)
Key Correct (on/off) used by Audio system (353), CD changer (355)
Text message used by SID (541)
Diagnostics communication

For a more detailed description of the control module's input information from the bus, see BUS COMMUNICATION

For a further description of diagnostics, see BUS AND DIAGNOSTICS COMMUNICATION