Citroen Xantia

since 1993 of release

Repair and car operation


Citroen Xantia
+ Introduction
+ Operation manual
+ Routine maintenance
+ engine Repair
+ Systems of cooling, heating
+ Power supply system and release
- Engine electric equipment
   + start and charge Systems
   + ignition System - petrol models
   - Preheat system - diesel models
      Problem diagnostics
      Removal, check of a condition and installation of candles of an incandescence
      Removal and installation of the control unit of system of preheat
+ Coupling
+ Transmission
+ Power shafts
+ Uniform hydraulic system
+ Brake system
+ Running gear and steering
+ Body and salon furnish
+ Onboard electric equipment
+ electric equipment Schemes

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Preheat system - diesel models

Functioning principle

The individual glow plug is screwed in the vortical chamber of each of cylinders of the engine. Candles are warmed up in the electric way, facilitating start of the cold engine. Management of power supply giving on candles is carried out by means of the special relay/timer.

On some models of a glow plug continue to function during even some time after implementation of start of the engine. After the starter will be switched off candles pass to a mode of 3-minute functioning on the timer. Thus within the first 15 seconds possibility of shutdown of candles is completely excluded. Then food giving on them can be interrupted under following conditions:
   a) Squeezing of a pedal of gas on a course more than 11 mm and its keeping in the pressed condition within more than 2.5 seconds;
   b) Registration by the sensor of temperature of cooling liquid of value from above 60°С.

In an instrument guard of the car the special control lamp informing the driver on operation of system of preheat is built in. Switching off of a lamp confirms readiness of the engine for start. Tension giving on candles is made within several more seconds after lamp switching off. If in allowed time it will not be undertaken attempts of start of the engine, the timer disconnects food giving in order to avoid an overheat of candles and a battery podsadka.