LEXUS RX 300

1998-2003 of release

Repair and car operation



Лексус RX 300
+ Cars Lexus RX-300
+ Controls and operation receptions
+ Options and car routine maintenance
+ The engine
- Systems of cooling of the engine, heating, ventilation and air conditioning
   - System of cooling of the engine
      The general information and safety measures
      Removal, check and installation of the water pump
      Removal, check and thermostat installation
      Check of components of system of cooling
      Removal and installation of a radiator and fans
   + Systems of heating, ventilation and air conditioning
+ The power supply system and release of the fulfilled gases
+ Systems of an electric equipment of the engine
+ Automatic transmission and interaxal differential
+ Трансмиссионная a line
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Basic schemes of electric connections


Check of components of system of cooling

Check of a cover of a radiator

 PERFORMANCE ORDER

  1. Establish on a radiator cover the special pump-tester and, holding it under a corner not less than 30 hailstones. To horizon, create constant pressure, making one pressing in not less, than 3 seconds. Make sure that through the vacuum valve there passes air, otherwise replace a radiator cover.
  1. Under the same conditions create pressure 0.9 1.2 атм – the safety valve should open. If the valve does not open even at pressure 0.75 атм, replace a radiator cover.

Check on leaks

 PERFORMANCE ORDER

  1. Fill a radiator with a cooling liquid and establish on its mouth the pump-tester. Warm up the engine to working temperature, create by means of the pump pressure 1.2 атм and make sure that it does not fall. Otherwise check up hoses of system of cooling, a radiator and the water pump on presence of leaks. If external leaks are not found out, check up the heater heat exchanger, the block and a head of cylinders. Eliminate leaks.

Check of fans

 PERFORMANCE ORDER

  1. Start the engine and make sure of inclusion of fans at achievement ОЖ of temperature 98 hailstones. Otherwise replace Д/В №1 ECT.
  1. Separate sockets of electroconducting of fans, submit on them pressure of the battery and connect to them ampermeters. Make sure of smoothness of rotation of fans and compare indications of ampermeters to requirements of Specifications of the Head of System of cooling of the engine, heating, ventilation and an air conditioning.

Check Д/В ECT

 PERFORMANCE ORDER

  1. Empty system of cooling and remove Д/В №1 and №2 ECT.
Site Д/В №1 ECT.
Site Д/В №2 ECT.
  1. By means of an ohmmeter make sure available conductivity between contacts of gauges №1 and №2 at temperature above accordingly 98 or 94 hailstones. At temperature more low 88 or 83 hailstones. Accordingly for Д/В №1 and №2 conductivity between their contacts should be absent.
Measurement of resistance Д/В №1 ECT.
Measurement of resistance Д/В №2 ECT.
  1. At unsatisfactory results of checks replace faulty Д/В.
  2. Establish Д/В, fill system of cooling of the engine and make sure of absence of leaks.

Check of the relay of fans

 PERFORMANCE ORDER

  1. Take from the relay block in an impellent compartment of the relay №1, №2 and №3 fans (the Onboard electric equipment see the Head).
  2. By means of an ohmmeter make sure available conductivity between contacts 3 and 5 each relays, and also of absence of conductivity between contacts 1 and 2 each relays. Besides, conductivity should be between contacts 2 and 4 relays №2.
Contacts of the relay of №1 and №3 fans.
Contacts of the relay of №2 fans.
  1. Put pressure of the battery to contacts 3 (+) and 5 (-) each relay (serially) and make sure available conductivity between contacts 1 and 2 each relays. Besides, under these conditions conductivity should be absent between contacts 2 and 4 relays №2.
  2. If checks have yielded unsatisfactory results, replace faulty relays.





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