DIAGNOSTIC ITEM 19: Diagnose When The Scan Tool Cannot Receive The Data Sent By A/C-ECU <Vehicles With A/C> Or Heater Control Unit <Vehicles Without A/C>: Function
WARNING: This page is about a different car, the 2012 Mitsubishi Lancer. However, it is still accessible from the selected car via links, so may be relevant.
If the scan tool MB991958 cannot communicate with the A/C-ECU <vehicles with A/C> or heater control unit <vehicles without A/C>, this diagnosis result will be set.