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Symptoms - HVAC Systems - Automatic: Notes

IMPORTANT: The following steps must be completed before using the symptom tables.
  1. Perform the Diagnostic System Check - HVAC Systems - Automatic  before using the symptom tables in order to verify that all of the following are true:
    • There are no DTCs set.
    • The control module(s) can communicate via the serial data link.
  2. Review the system operation in order to familiarize yourself with the system functions. Refer to Automatic HVAC System Description .
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