fuel level sensor (FLS) EPSILON failure and a control unit (CU) it is
strictly forbidden to connect the common (black) power wire of the
sensor in the area between the battery and disconnect switcher!
(Pic.8.10)
Pic. 8.10 INCORRECT connection of common wire.
The resistance between the body of installed sensor and the point of connection of its common
wire to the "mass" should not exceed 0.5 Ohms. In any case, the total resistance of the earth
wires from the sensor to the control unit should not exceed 0.5 Ohms.
During installation of the sensor to the vehicle with switched "mass" and necessity to save
functionality when ”mass” is switched off, additionally a galvanic isolated voltage stabilizer or
other galvanic power supply is set (Pic.8.11).
ДУТ
БУ
-
Выключатель
массы
1
2
...
n
Электроприборы ТС
+
Гальвани-
ческая
развязка
питания
+
Pic. 8.11 Installation of sensor on vehicle if it is necessary to save functionality when ”mass” is
switched off.
FLS
Control
Block
Disconnect
Switcher
Disconnect
Switcher
common
common
black
FLS
Control
Unit
Galvanic
Power
Supply
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