First of all, check the presence of the stabilizer supply voltage by connecting a voltmeter between its input and «weight», the value of which should be almost equal to the battery voltage.
Then measure the output voltage of the regulator between «weight» and its output, which should be between 9.75-10.25 V. If the output voltage obtained is not correct, replace the voltage regulator.
Fuel gauge
Labels on the scale of the fuel gauge: A - position «empty tank»; B - position «full tank»
If the device malfunctions, check the serviceability of the sensor installed in the fuel tank. To do this, in no case do not directly connect the indicator wire with «weight». The check is made by connecting a resistor between the two plugs of the sensor connector.
When the 544 ohm resistor is turned on, the pointer arrow should be at the beginning of the scale (position «empty tank»), and when a 60 ohm resistor is turned on, it should deviate to the end of the scale (position «full tank»). Each of these pointer positions is marked on the scale with two dots indicating tolerance. If the pointer is not in the same position relative to the marks at the beginning and end of the scale, adjust the pointer as indicated below. If this succeeds, replace the sensor. If the difference in the position of the arrow between the marks remains significant, check the supply voltage of the device and, if necessary, replace it.
Fuel gauge adjustment
Pour 12 liters of fuel into a completely empty tank. Turn on the ignition (moreover, do this at least 2 minutes before adjusting the pointer): the arrow should be on the right border of the red zone of the scale. If not, adjust the instrument with the adjustment screw underneath.
Visitor comments