2005 Citroen C4 Sensor

Downloaded from www.Manualslib.com manuals search engine 413
BRAKES
BRAKE SPECIFICATIONS
Gyrometer sensor (7) Hydraulic block
C4AP17YCB3HP002C
Observations Part no. Supplier Components
XSARA
ESP hydraulic
blockBOSCH 5.7 ESPLocated on the front
LH wheelarch:
4 adjustmentchannels.IMPERATIVE: Respect the direction of fitting of the gyrometer/
accelerometer sensor
(connector towards the rear of the vehicle).WARNING: The gyrometer/accelerometer sensor should not be
subjected to any impact. Any gyrometer/accelerometer sensor
having suffered an impact must be replaced.
Tightening torque (15): 0,6 ± 0,1 m.daN.
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Downloaded from www.Manualslib.com manuals search engine AIR
CONDITIONING
443
CHECKING THE EFFICIENCY OF THE AIR CONDITIONING SYSTEM
Aircon circuit diagnosis table
Principal problem Symptom Possible causes
Aircon compressor clutch
Lack of aircon fluid in the aircon circuit
The clutch of the aircon compressor does not Aircon pressostat
engage, or disengages suddenly Aircon evaporator sensor
The aircon compressor does not turn Electrical circuit
(wiring, fuses, etc.)
or stops suddenly
Auxiliaries drive belt
Aircon compressor
The clutch of the aircon compressor remains Filtering and drying cartridge
engaged and stops suddenly
Aircon pressure reducer
Leak of aircon fluid
Aircon compressor clutch
Angl.-t2-page428-456-2005 9/01/06 10:25 Page 443

Downloaded from www.Manualslib.com manuals search engine AIR
CONDITIONING
445
CHECKING THE EFFICIENCY OF THE AIR CONDITIONING SYSTEM
Aircon circuit diagnosis table
Principal problem Symptom Possible causes
Low pressure and high pressure too highAircon pressure reducer defective
Duct clogged
Low pressure too high and high pressure too low Aircon compressor seal defective
Aircon evaporator sensor defective
Low pressure too low and high pressure too high Aircon pressure reducer jammed
Abnormal levels of pressuretoo high
Filtering and drying cartridge obstructed
Duct clogged
Duct clogged
Aircon pressure reducer jammed
Low pressure and high pressure too low
Lack of aircon fluid in the aircon circuit
Aircon compressor defective
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Downloaded from www.Manualslib.com manuals search engine 446
AIR
CONDITIONING
CHECKING THE EFFICIENCY OF THE AIR CONDITIONING SYSTEM
Aircon circuit diagnosis table
Principal problem Symptom Possible causes
Low pressure normal and high pressure too high Presence of air in the aircon circuit
Low pressure normal and high pressure too lowAircon pressostat defective
Evaporator sensor defective
Abnormal levels of pressure Low pressure too high and high pressure normal Aircon pressure reducer jammed open
Filtering and drying cartridge saturated or
Low pressure too low and high pressure normal clogged
Aircon pressure reducer iced up
Under cooling too weak Lack of aircon fluid
Air conditioning operating inExcess aircon fluid
back-up mode
Under cooling excessive Presence of air in the aircon circuit
Filtering and drying cartridge clogged
NOTE: In all cases, measure the excessive heating (SC)and the blow air temperature.
Angl.-t2-page428-456-2005 9/01/06 10:25 Page 446