Control module ground: 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.
If there is a break in the circuit to pin 19, the TCS and ABS functions will be disabled and the warning lamps for ABS, brakes and TCS OFF will light up as well as the central warning lamp. Communication with the diagnostic tool is not possible.
If there is a break in the circuit to pin 16, diagnostic trouble code C2465 will be set, the TCS and ABS functions will be disabled and the warning lamps for ABS, brakes and TCS OFF will light up as well as the central warning lamp.