Mazda 323

since 1985 release

Repair and operation of the car

Mazda 323

+ Introduction
+ Petrol engines
+ Engine lubrication system
- Engine cooling system
   Contour of cooling liquid
   Antifrizny concentrate
   Replacement of cooling liquid
   Check of tightness of the cooling system
   Removal and installation/check of the thermostat
   Removal and installation of the water pump
   Removal and installation of a radiator
   Removal and installation of the motor of the fan
   Check of a thermoswitch
+ System of ignition
+ Power supply system, carburetor, system of injection of fuel
+ Diesel engine
+ System of production of the fulfilled gases
+ Coupling
+ Manual transmission
+ Automatic transmission
+ Suspension bracket and system of steering
+ Brake system
+ Wheels and tires, body, coloring of the car, care of the car
+ System of electric equipment
+ Heater, system of lighting, devices
+ Governing bodies and methods of operation
+ Electric circuits

Check of a thermoswitch


  1. The thermoswitch is screwed in in the inlet union of cooling liquid. It turns on the electric fan of a radiator when cooling liquid reaches a certain temperature. The switch should be checked if at a hot radiator the fan does not turn on. Check conditions: To check electric wires, the relay and motor of the fan according to the scheme. The thermostat and the reducing valve in a cover of a radiator are serviceable. If these elements are faulty, the thermoswitch will not be able to turn on the fan as it does not heat up cooling liquid.
  1. To disconnect the plug from a thermoswitch.
  2. To unscrew a thermoswitch.

Cooling liquid will follow from an opening on the inlet union. To substitute capacity for collecting liquid.

  1. To suspend a thermoswitch in the container with water. To slowly heat water.
  2. By means of an ohmmeter to control course of current via the switch. At a temperature of +91 °C current has to proceed.
  3. To leave water to cool down and control that at the water temperature of +84 °C current stopped proceeding.
  1. If values do not correspond demanded, the switch should be replaced.
  1. To screw the switch with new laying with effort of 10 Nanometers.
  2. To fill in cooling liquid.
  3. To warm up the engine and to leave to idle, the fan will not turn on yet. To double-check the level of cooling liquid.