Too Cold In Vehicle - Auxiliary (A/C Only)

TOO COLD IN VEHICLE - AUXILIARY

TEST DESCRIPTION

Steps 1-2:

Steps 2-7:

Steps 8-10:

Steps 11-18:

The number below refers to the step number in the diagnostic table.
16. The primary HVAC control module controls the coolant bypass valve. It receives a Class 2 message from the auxiliary HVAC control module for the proper position of valve.