Circuit Operation
This circuit supplies the power to the vacuum pump. The battery positive voltage is supplied to the auto-cruise control vacuum pump by turning on the transistor at terminal number 16 of the auto-cruise control ECU.
The conditions for turning on the transistor at terminal number 16 of the auto-cruise control ECU are as follows.
- Ignition switch "ON".
- Auto-cruise control main switch "ON".
- Stoplight switch ON.