T8010/T8020/T8030/T8040 MASTER TABLE OF CONTENTS Evaporator Temperature Sensor .............................................................................................................. 50-1-83 Background ............................................................................................................................................. 50-1-83 Electrical Test – Sensor .......................................................................................................................... 50-1-83 Power Circuit ........................................................................................................................................... 50-1-84 Service Note:
Too Little Cooling/Too Much Heating without Symptoms ................................................. 50-1-84 Evaporator Temperature Sensor and Circuit Test .................................................................................. 50-1-84 Controller Power, Ground And A/C Switch ............................................................................................... 50-1-86 Background ............................................................................................................................................. 50-1-86 Power and Ground Circuit .......................................................................................................................
50-1-86 Possible Failure Modes ........................................................................................................................... 50-1-86 Controller Power Supply and Ground Test ............................................................................................. 50-1-86 A/C Switch and Circuit Test .................................................................................................................... 50-1-87 Cab Pressurizer Blower ............................................................................................................................
50-1-88 Background ............................................................................................................................................. 50-1-88 Power and Ground .................................................................................................................................. 50-1-88 Cab Pressurizer Blower & Relay Power Supply and Ground Test .......................................................... 50-1-89 11