Heating water circulation pump, function - GF83.20-P-2102-01T

The coolant circulation pump (M13) is actuated by the front passenger SAM control unit (N10/11).

The front passenger SAM control unit (N10/11) receives the switch-on request via the interior CAN from the AAC [KLA] control and operating unit (N22) or comfort automatic air conditioning (N22/7).