Does that signal go to the PCU that then activates the solenoid at the IP?First one is the fast idle/timing advance for cold start, second one is the gauge coolant temp sensor.
I'm not sure what a PCU is. That sensor is just a temperature activated switch. When the engine's cold, it allows current to flow though it, which then powers the fast idle and timing advance. When the coolant temperature gets to around 120*, the switch opens, and keeps the current from going through it which deactivates the two.Does that signal go to the PCU that then activates the solenoid at the IP?