CLIMATRONIC Control Module (CCM): Notes

Climatronic Control Module (CCM) is integrated with A/C-heater control head and cannot be serviced separately. CCM is equipped with Diagnostic Trouble Code (DTC) memory which can be checked using Scan Tool (VAG 1551). Automatic climate control system receives input information from various electrical components and sensors. This information is processed by CCM in accordance with specified values which provide corresponding output signals that control electrical components.

A Diagnostic Trouble Code (DTC) is set when a malfunction occurs which will have a permanent adverse effect on operation of CCM. If a DTC is present, A/C-heater control head will display flashes for about 15 seconds when ignition is turned on. On malfunctions that do not cause display to flash, CCM allows emergency operation at preprogrammed settings indicated on display.