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Home >> Saab >> 2003 >> 9-3 Vector, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 44 (Theft Protection) >> Fault Diagnosis, General >> Fault Diagnosis Strategy For Electronic Systems >> General Fault Diagnosis In Electronic Systems >> Control Module
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Control Module

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.

When the control module is supplied with current, the processor in it is tripped. The processor then reads the instructions stored in the control module's memory.

The control module is programmed to read the inputs and activate the outputs. If the control module program is faulty, the diagnostic trouble code "Internal Control Module Fault" will be generated.

The control module must be supplied with current before the system will function. The control module is supplied with current and the processor tripped when the control module can be contacted by the diagnostics instrument.

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