Structure and inner circuit

The diagnosis module for tank leakage consists of an electrically driven overpressure pump (leakage diagnosis pump) as well as an electromagnetic changeover valve and reference bore hole. In addition, a heating element is integrated in the DMTL to remove any condensate that might be present.

Fig 1: Diagnosis Module For Tank Leakage (DMTL) - Circuit Diagram

Courtesy of BMW OF NORTH AMERICA, INC.