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
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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.