Vacuum System - Testing

HVAC Vacuum Moding:

To diagnose the vacuum delivery system refer to the table, and Functional Test.

Refer to Insufficient Heating and Defrosting Diagnosis. Refer to Too Much Heat Diagnosis. Refer to Improper Air Delivery Or No Mode Shift Diagnosis. Too Much Heat Insufficient Heating or Defrosting System Diagnosis Improper Air Delivery or No Mode Shift