Peugeot 406

since 1996 release

Repair and operation of the car

Peugeot 406
+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engine
- 4. Cooling systems, heating and ventilation
   4.1. Technical data
   4.2. Connection of hoses of the cooling system
   4.3. Radiator
   4.4. Thermostat
   4.5. Electric fan
   4.6. Thermal sensors
   4.7. Sensor of a lamp of excess of temperature of cooling liquid
   4.8. Water pump
   4.9. Heating system and ventilation
   4.10. Elements of system of heating
   4.11. Air conditioning systems
+ 5. Fuel system
+ 6. System of ignition
+ 7. Coupling
+ 8. Transmissions
+ 9. Power shafts
+ 10. Brake system
+ 11. Suspension bracket and steering
+ 12. Body
+ 13. Electric equipment
+ 14. Main malfunctions

4.5. Electric fan


1. Power supply to the fan(s) of cooling moves via the lock of ignition and the fuse. On petrol engines without conditioner the control of the fan is made by the thermal sensor installed on the left side in a radiator. On petrol engines with the conditioner and all diesel engines fans are run by the Bitron sensor.
2. The fan has to turn on at excess of working temperature of the engine, i.e. several minutes prior to an entrance of an arrow of the index of temperature of the engine to the red sector or before fire of a lamp of the alarm system of excess of temperature of cooling liquid. If the fan does not turn on, remove wires from the thermal sensor, connect them among themselves and include ignition. If the fan starts working after that probably the thermal sensor which is subject to replacement failed.
3. In case the fan still does not work, check whether tension to the thermal sensor moves. If tension on the thermal sensor is absent, damage of wires is possible or the fuse fused. If tension moves, check reliability of connection with the mass of the second wire of the sensor. If термодачтик and an electrical wiring in good shape, so it is possible, the fan electric motor is damaged. The electric motor can be checked by giving of tension for it additional wires from the accumulator.


1. Remove a radiator.
2. On models with the conditioner unscrew fastening screws, then remove a fastening bracket, the fixing condenser assembly to a fan casing. Move condenser assembly aside so that access to nuts of fastening of the engine of the fan opened.
3. Remove a front grille.
4. Unscrew bolts of fastening of a casing of the fan to the cowl lock. Disconnect a cowl lock cable from the lock and remove it. Unscrew fastening nuts (are specified by shooters) and take the engine with the fan from a casing.
5. If it is necessary, unscrew the screw of fastening and remove the fan from an engine shaft.


Installation is made in the sequence, the return to removal, considering the next moments:
      – before installation check a condition of a casing of the fan;
      – check a condition of an electrical wiring and its laying in fastening brackets;
      – establish a radiator.