STH switchover valve component description - GF83.70-P-4205SX
MODEL 221.0 /1, 216.3 with CODE (228) Stationary heater up to Model Year 8
Shown on model 221.0
Location
The STH switchover valve is located in the front right wheel well next to the STH or HB heater unit (A6) on model 221 or the STH heater unit (A6) on model 216.
Task
The STH switchover valve regulates the flow of coolant (small or large coolant circuit).
Actuation on model 221 is conducted by the STH or HB control unit (A6n1) or on model 216 by the STH control unit (A6n1).