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TEST ACTION APPLICABILITY 4 Turn the ignition on. t in ATC, Monitor Display, PCI Bus Messages, look for the following message: t display: VF DIM MSG PRESENT: YES? All Yes → Replace the Automatic Temperature Control (ATC) in accordance with the Service Information. No → Replace the Body Control Module (BCM) in accordance with the Service Information. 621 HEATING & A/C VF DIMMING MESSAGE MISSING (ACTIVE) - ATC — Continued |