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
   + ignition and engine management Systems
   + Diagnostics of systems of electronic control and diagnostic equipment
   - Charge and start systems
      General information
      The storage battery - the general information, recommendations about service
      Charge system - general information and security measures
      Check of system of a charge
      Removal and generator installation
      System of start of the engine - the general information
      Removal and starter installation
+ Automatic transmission and interaxal differential
+ Transmission line
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Schematic diagrams of electric connections

Check of system of a charge

Remember that failure of the generator is not the unique possible cause of infringement of serviceability of functioning of system of a charge. At identification of signs of refusal of system execute the following checks:

  • Check a condition and effort of a tension of a driving belt of the generator, in case of need make its replacement (see. Head of Control and routine maintenance of the car);
  • Check reliability of a tightening of bolts of fastening of the generator;
  • Check a condition of electroconducting of the generator and its terminal connections, in case of need remove oxidation products, tighten fixture;
  • Check a condition of the corresponding safety locks (see. Head Onboard electric equipment), - before replacement of the punched safety lock eliminate the overload reason;
  • Start the engine and make sure that the generator does not publish any extraneous noise, - whistle or squeal can testify to wear of bearings or brushes;
  • Check completeness of level of a charging of the storage battery, - remember that one damage of a banok can lead to increase of a current of consumption;
  • Disconnect from the wire battery both (at first negative) and attentively study a condition of polar plugs, - in case of detection of traces of corrosion carefully smooth out plugs, it is desirable with use of special adaptations, track reliability of fixing on plugs of tips of wires.


  1. Check target tension of the storage battery at the switched-off engine, - the result of measurement should make about 12 Century.
  1. Check a charging chain without loading. For this purpose disconnect a wire from the plug B of the generator and connect this wire to negative щупу the ampermeter. Positive щупы the ampermeter and the voltmeter connect to the generator plug B. Negative щуп the voltmeter connect to mass of the car. Start the engine and, having increased turns with single to 2000 rpm, consider indications of measuring devices and compare them to requirements of Specifications of the Head of System of electric equipment of the engine.
  1. If tension is higher admissible, replace a tension regulator (on the L3B generator) or winding assembly (on the SC1 generator).
  1. If tension of the L3B generator is lower admissible, check the generator and a tension regulator. For this purpose at the earthed plug F start the engine and check tension on the plug B. If tension is higher admissible, replace a tension regulator. If tension is lower admissible, check the generator.
  1. Check a charging chain without loading. For this purpose at the engine working at 2000 rpm include a driving beam of headlights and turn on the heater fan in the HI mode. Measure a current of the generator and compare it to requirements of Specifications of the Head of System of electric equipment of the engine. If the measured value is lower admissible, repair the generator.

Indications of the ampermeter can be below admissible value if the battery is completely charged.

  1. At excess by target tension of the top border of an admissible range it is necessary to make replacement of a regulator of tension.
  2. Wear of brushes of the generator, weakening of shchetochny springs, regulator refusal, diode failure, winding break, and also damage of rings of a collector can be the reason of excessive understating of tension. The condition of brushes and collector rings can be checked visually, - in the absence of obvious damages the generator should be removed from the car (see. The section Removal and generator installation) for more detailed check and regenerative repairs/replacements.