LEXUS RX 300

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
   + System of cooling of the engine
   - Systems of heating, ventilation and air conditioning
      General information
      Replacement, dismantling and To/in block assembly
      Removal, dismantling, assembly and installation of the block of the fan of a heater
      Check and compressor and K/V magnetic coupling replacement
      Removal and To/in condenser installation
      Checks of components of systems of heating and To/in
      Removal and control unit installation
+ 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
+ Schematic diagrams of electric connections

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Checks of components of systems of heating and To/in

Broad valve

 PERFORMANCE ORDER

  1. Start the engine and let's to it work on 1500 rpm in a current not less than 5 minutes then make sure that in a contour of a high pressure pressure of 13.6 ÷ 15.5 atm was established.
  2. At malfunction of the valve pressure in a contour of low pressure should reduce to zero. Check the reception and final parties of a receiver dehumidifier – they should be identical temperature.

Pressure switch

 PERFORMANCE ORDER

  1. Start the engine and leave it to work for 1500 rpm.
  2. Establish the maximum turns of the fan of a heater and the minimum temperature.
  1. Separate the socket of the sensor of pressure.
  1. Connect positive щуп an ohmmeter to contact 4, and negative – to contact of 1 socket and make sure of conductivity change at change of pressure of a coolant. Thus management of the magnetic coupling is checked.
1 — the Contour of low pressure
2 — there is a conductivity
3 — there is no conductivity
4 — the Contour of a high pressure
  1. Connect positive щуп an ohmmeter to contact 2, and negative – to contact 3 sockets and make sure of conductivity change at change of pressure of a coolant. Thus management of the condenser fan is checked.
1 — there is a conductivity
2 — there is no conductivity

Main relay of a heater

 PERFORMANCE ORDER

  1. Take the main relay of a heater of the assembly block (see. Head Onboard electric equipment).
  1. Certify available conductivity between contacts 1 and 2, and also 3 and 4. Submit tension of the battery on contacts 1 and 2 and certify available conductivity between contacts 3 and 5. At unsatisfactory results of checks replace the relay.

Relay of the magnetic coupling

 PERFORMANCE ORDER

  1. Take the relay of the magnetic coupling from the assembly block in an impellent compartment (see. Head Onboard electric equipment).
  1. Certify available conductivity between contacts 1 and 2. Submit tension of the battery on contacts 1 and 2 and certify available conductivity between contacts 3 and 5. At unsatisfactory results of checks replace the relay.

Condenser fan

 PERFORMANCE ORDER

  1. Start the engine, establish the maximum speed of rotation of the fan of a heater, the minimum temperature and include К/В.
  2. Make sure that the fan of the condenser works at low speed at OZh 90 temperature a hail., and also at pressure less than 15 atm. At temperature the 95th hail. and pressure 15 atm are higher – the fan should work on high speed.
  1. Separate the electroconducting socket the fan of the condenser and connect to its contacts the storage battery and the ampermeter. Make sure that the krylchatka of the fan rotates smoothly. Indications of the ampermeter should make 9.8 ± 1.5 And at temperature the 20th hail.

System checks through ECU contacts

Below the table of tension on control unit contacts by the K/V serviceable system under certain conditions is provided.

Contacts of the module of management To/in

Contacts

Color of wires

Check conditions

Tension, In

<—>IG GND <—>(C14-1 C14-11)

<—>R-L BR

Ignition is included

10 ÷ 14

In <—>GND <—>(C14-3 C14-11)

<—>W-L BR

Constantly

10 ÷ 14

<—>BLW GND <—>(C14-4 C14-11)

<—>P-L BR

Ignition is included. The fan switch in the situation "ON"

1 ÷ 3

THERE <—>SG-5 <—>(C14-7 C14-16)

<—>BR WR

External temperature 25th hail.

1.35 ÷ 1.75

External temperature 40th hail.

0.85 ÷ 1.25

<—>TR SG-3 <—>(C13-3 C13-9)

GR <—>of G-W

Salon 25 temperature hail.

1.8 ÷ 2.2

Salon 40 temperature hail.

1.2 ÷ 1.6

<—>TPI SG-2 <—>(C13-11 C13-1)

GR <—>of B-W

The REC switch is pressed

3.5 ÷ 4.5

The FRS switch is pressed

0.5 ÷ 1.5

<—>AIR GND <—>(C13-12 C14-11)

<—>R BR

The FRS switch is pressed

10 ÷ 14

The REC switch is pressed

Below 1.0

A I <—>of F GND <—>(C13-13 C14-11)

<—>BR-W BR

The FRS switch is pressed

Below 1.0

The REC switch is pressed

10 ÷ 14

<—>TS S5-3 <—>(C13-15 C13-16)

<—>Y-B L

The sensor is shined with an electric lamp

0.8 ÷ 4.3

The sensor is covered with rags

Below 0.8

THOSE <—>SG-1 <—>(C12-1 C12-9)

<—>G-Y B-Y

Evaporator 0 temperature hail.

2.0 ÷ 2.4

Evaporator 15 temperature hail.

1.4 ÷ 1.8

<—>TPO SG-1 (C12-3 <—>C12-9)

<—>LG-R B-Y

Ignition is included. The FACE mode is chosen

3.5 ÷ 4.5

Ignition is included. The forward DEF switch is pressed

0.5 ÷ 1.5

<—>AOD GND <—>(C12-4 C14-11)

<—>LG-B BR

Ignition is included. The FACE mode is chosen

Below 1.0

Ignition is included. The DEF mode is chosen

10 ÷ 14

<—>AOF GND <—>(C12-5 C14-11)

<—>W BR

Ignition is included. The FACE mode is chosen

10 ÷ 14

Ignition is included. The DEF mode is chosen

Below 1.0

<—>TP SG-1 <—>(C12-6 C12-9)

<—>O B-Y

Ignition is included. A temperature regulator in the provision of the maximum cooling

3.5 ÷ 4.5

Ignition is included. A temperature regulator in the provision of the maximum warming up

0.5 ÷ 1.5

АМН <—>GND <—>(C12-7 C14-11)

<—>Y-G BR

Ignition is included. A temperature regulator in the provision of the maximum warming up

10 ÷ 14

Ignition is included. A temperature regulator in the provision of the maximum cooling

Below 1.0

<—>AMC GND <—>(C12-8 C14-11)

<—>Y BR

Ignition is included. A temperature regulator in the provision of the maximum cooling

10 ÷ 14

Ignition is included. A temperature regulator in the provision of the maximum warming up

Below 1.0