Power supply: 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 the voltage drops below 9 V DC for at least 0.5 seconds at vehicle speeds above 6 km/h (3.7 mph), diagnostic trouble code C1532 will be generated and the TCS and ABS functions will be disengaged at the same time as the warning lamps for ABS, brake fluid, central warning and TCS OFF go on.