LV ELECTRICAL SYSTEM 126 (a) The normally open-type When a normally open relay as illustrated here is checked, there should be no continuity between terminals 30 and 87 when the relay is deenergized. There should be continuity between terminals 30 and 87 when battery voltage and ground are applied to terminals 85 and 86. The relay condition is determined by this check. NOTE Check the relay in both condition, i.e. energized and not energized (b) The normally closed-type When a normally closed relay as illustrated here is checked, there should be continuity between terminals 30 and 87 when the relay is deenergized. There should be no continuity between terminals 30 and 87 when battery voltage and ground are applied to terminals 85 and 86. The relay condition is determined by this check. NOTE: Check the relay in both conditions, i.e. Energized and not energized. (c) The NO NC (Changeover) type It has 2 relay out pins. One will be in contact in the changeover state as in NC relay. When it is energized it brakes the NC contact and connect the other output pins. C. FUSE AND RELAY BOX LAYOUT This fuse boxes are located at 3 location. 1. BATTERY MOUNTED FUSE BOX (BDU) FUSE DETAIL FUSE NO. FUNCTION FUSE RATING F01 DC – DC Converter 200A NOTE The battery mounted fuse is not re-placeable. If F01 fuse blows, the 12V battery +ve cable along with fuse has to be replaced. WARNING If Fuse box cover is removed for any reason, it should be refitted properly at its original position. If you manipulate or bridge a faulty fuse or if you replace it with a fuse with higher amperage, the electric cables could be overloaded. This could result in a fire. There is a risk of an accident and injury. Always replace faulty fuses with the specified new fuses having the correct amperage.
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