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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 124 (HVAC System - Automatic) >> Diagnostic Information and Procedures >> DTC B0173, B0178, B0509, B0514 or B3933: Duct Air Temperature Sensor >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2016 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify DTC B3933 is not set.
    • If DTC B3933 is set 

      Refer to Circuit/System Testing - Without Scan Tool Support.

    • If DTC B3933 is not set 
  3. Verify the appropriate temperature sensor has a parameter displayed in HVAC scan tool information.
    • If there is no scan tool parameter 

      Refer to Circuit/System Testing - Without Scan Tool Support.

    • If there is a scan tool parameter 
  4. Refer to Circuit/System Testing - With Scan Tool Support
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