Kl_30 TCU power supply low voltage warning Описание Software; Normal mode Причина Power supply of the TCU (KL_30) has a low voltage (below 20V). Примечания Engine brake is switched off (only relevant if vehicle is eqipped with engine brake). Available retarder torque or engine brake torque is limited (standard value 50%). Increased fuel consumption. Available engine torque is limited. Действие Switch off ignition; Connect terminal tester between TCU and vehicle; Switch on ignition; Measure voltage between pin 8 (VP1) and pin 17 (VM1), nominal value: > 20 V; If you find deviations from nominal value, check wiring and power supply (vehicle side);