300CD (123.153) L5-3.0L DSL Turbo (617.952) (1982)
Evaporator Temperature Sensor / Switch: Description and Operation
PURPOSE
The evaporator temperature regulator (ETR) controls compressor cutout when evaporator temperature drops below freezing temperature 0°C (32°
F).
OPERATION
During cooling operation of the automatic climate control (ACC) system, the ETR switch interrupts compressor clutch relay (code 12) actuating
coil when the evaporator temperature drops below 0°C (32°F).