Cruise Control Switch Circuit: Description
WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.
This circuit sends a signal to the hybrid vehicle control ECU depending on the cruise control switch condition. The battery supplies positive (+) battery voltage to the circuit control switch Then terminal CCS of the hybrid vehicle control ECU receives the voltage according to the switch condition.