Schematic diagram of the control system switch
Checking the technical condition of the switch
1. Disconnect the switch and remove it from the panel.

2. Apply battery voltage to contacts 4 "-" and 5 "+". (Battery voltage VB).
3. Measure the voltage between contacts 3 and 4.
4. Compare the percentage ratio (V/VB * 100 measured voltage/battery voltage) with the values below.
5. If the voltage does not match the specified values, replace the switch.
