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Mercedes M-Class W163since 1997 releaseRepair and operation of the car |
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Mercedes W163 + Mercedes-Benz cars of a class M (W163) + Governing bodies and methods of safe operation + Current leaving and service + Engine + Cooling systems, heating and air conditioner + A power supply system and production of the fulfilled gases + Systems of electric equipment of the engine + Manual box of gear shifting + Automatic transmission + Transmission line + Brake and auxiliary systems + Suspension bracket and steering + Body - Onboard electric equipment General information and precautionary measures Search of causes of failures of electric equipment Safety locks - the general information Chain breakers - the general information The relay - the general information and check of serviceability of functioning Digital tire of data of CAN + Assembly blocks, elements of control systems + Dashboard, switches, traveling computer + Driving electric motors + Alarm and lighting fixtures, sensors of a rain and temperature of external air + Systems of additional safety (SRS) + Audio system + Schemes of electric connections |
The relay - the general information and check of serviceability of functioning General information For giving of power supply or a signal of management on many of consumers of the electric power in the car (such as components of system of injection of fuel, a horn, a starter, the cooling system fan(s), fog lights and so forth) relays are used. Actually, the relay represents the electric key providing short circuit of VV of a contour on NV to a signal. In case of a relay exit out of operation there is a refusal of functioning of the corresponding consumer. The most part of the relay is located in a motive compartment, others "are scattered" on the car. The description of check of serviceability of functioning of the relay is given below. The failed relays are subject to replacement. Check
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