Sprinter 2500 L5-2.7L DSL Turbo (2003)
Refrigerant Control Solenoid Valve: Description and Operation
Rear A/C Solenoid Valve
The rear A/C solenoid valve is a two-position electrically operated shut-off valve, which is used to control refrigerant flow to the rear A/C evaporator
from the A/C compressor. The solenoid valve is located in the rear A/C evaporator housing and is attached by a bracket.
The solenoid valve is used by the rear A/C control module to control rear A/C output temperature and to prevent evaporator freezing. Evaporator
temperature is controlled by cycling the solenoid valve open and closed, thereby controlling refrigerant flow to the rear evaporator. The normally closed
valve only allows refrigerant to flow through it when power is supplied to the solenoid by the rear A/C control module.
