1998 — 2003 of release

Repair and car operation

RX 300 Lexus
+ Lexus RX-300 Cars
+ Governing bodies and operation receptions
+ Settings and routine maintenance of the car
+ Engine
+ Systems of cooling of the engine, heating, ventilation and air conditioning
+ the Power supply system and production of the fulfilled gases
+ Systems of electric equipment of the engine
+ Automatic transmission and interaxal differential
+ Transmission line
+ Brake system
+ Suspension bracket and steering
+ Body
- Onboard electric equipment
   General information
   Diagnostics of malfunctions of onboard electric equipment - the general information
   Safety locks - the general information
   The relay - the general information and check of serviceability of functioning
   Screen wipers and stekloomyvatel
   Replacement of filament lamps
   Removal and installation of a casing of a steering column and podrulevy switches
   Check of serviceability of functioning of some auxiliary systems
   Removal and aerial installation
   Removal and installation of a combination of devices
   Adjustment of an inclination of headlights
   Removal and installation of components of SRS system
   Removal and installation of components of window regulators and screen wipers
+ Schematic diagrams of electric connections

The relay - the general information and check of serviceability of functioning

General information

For giving of power supply or a management signal on some of consumers of the electric power in the car (such as components of system of injection of fuel, a horn, a starter, the fan of system of cooling, fog lights and other) are used by the relay. Actually the relay represents the electric key providing short circuit In/in a contour on a low-voltage signal. In case of a relay exit out of operation there is a refusal of functioning of the corresponding consumer. Installation sites of assembly blocks of the relay and safety locks are specified illustrations the Arrangement of blocks of the relay and safety locks in an impellent compartment. The description of check of serviceability of functioning of the relay is provided below. The failed relays are subject to replacement.



  1. If it is not possible to find out a way of turning on of the relay in the corresponding electric contour according to schemes of electric connections (Schematic diagrams of electric connections), it is necessary to remember that the approach to check of any relay in principle is identical in all cases.
  2. In most cases the management contour always is connected to two of contact plugs of the relay. When giving on these plugs of low-voltage tension the current starts to circulate on a winding of management of the relay therefore there is a short circuit of big contacts of a working contour of the consumer of the electric power. Other plugs are plugs of the worker (In/in) a contour.
  3. For the purpose of simplification of identification of plugs of the relay explanatory marking is usually put on its case with the image of the scheme of connection of keys.
  4. Before removal of the relay make sure that the corresponding contour is disconnected.
  5. Connect the wire crossing point equipped with a safety lock between one of plugs of management of the relay and the positive plug of the battery. By means of the second wire crossing point earth the second plug of management, – the relay should publish click. Some relays demand obligatory observance of polarity of connection, - if click did not occur, try to change polarity of connection of plugs of management.
  6. At the connected wires crossing points check conductivity existence between contour In/to plugs, having connected an ohmmeter according to the key scheme on the relay case.
  7. At negative result of check replace the relay.