TC/Abs Ecu Input Signals
WARNING: This page is about a different car, the 1995 Saab 9000. However, it is still accessible from the selected car via links, so may be relevant.
TC/ABS ECU receives signals from 4 wheel sensors which provide input on wheel speed. TC/ABS ECU also receives signals from monitoring circuit for hydraulic pressure and brake fluid level. Pressure switch in TC block sends signals to TC/ABS ECU with information on whether the brake is activated and whether TC or ABS mode is operative (manual transmission version only). See Fig 1 . Signal from pressure switch is compared with input signal from brake light switch. TC/ABS ECU also communicates with ETS ECU. TC/ABS ECU is located on battery shelf. ETS ECU is located under driver's seat.