LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Volkswagen >> 1999 >> Jetta TDI, Standard >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> A/C Heater Systems - Automatic (A3 Platform) >> Operation >> A/C-Heater Control Panel/CLIMATRONIC Control Module (CCM) >> Notes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

A/C-Heater Control Panel/CLIMATRONIC Control Module (CCM): Notes

Climatronic Control Module (CCM) is integrated into A/C-heater control panel and cannot be serviced separately. Control module 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 the control module in accordance with specified values to provide corresponding output signals that control electrical components.

A Diagnostic Trouble Code (DTC) is set when a malfunction occurs that will have a permanent adverse effect on operation of the CCM. If a DTC is present, A/C-heater control panel 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.