Direct Clutch Vehicle Speed Sensor Signal
WARNING: This page is about a different car, the 2002 Toyota Avalon and 2001 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
Vehicle Speed Sensor (VSS) for Anti-Lock Brake System (ABS) detects wheel speed and sends appropriate signal to ABS ECU. ABS ECU converts signals into a 4-pulse signal and outputs signal to instrument cluster, then outputs 4-pulse signal to ECM. ECM determines vehicle speed based on frequency of pulse signals.