Vacuum System - Testing

Auxiliary Heater A/C Control:

Vacuum Logic Table
Vacuum is supplied to the control head through one input port and soured to 4 output ports. The ports are referred to according to their corresponding functions within the HVAC module.

These ports in turn interface with a 6 port/6 conductor vacuum harness. It connects the control head to the vacuum source and the HVAC module. The vacuum is switched according to the following logic table.