cooling RENAULT SCENIC 2009 J84 / 2.G Air Conditioning Climate Control Workshop Manual

62B-53
CLIMATE CONTROL
Fault finding – Fault Finding Chart62B
V3 MR-372-J84-62B000$110.mif
Vdiag No.: 44
ALP 12 Water is present in the passenger compartment
NOTESOnly consult this customer complaint after a complete check using the
diagnostic tool.
Pressurise the cooling circuit.
Is there any coolant leaking into the vehicle?
NO
Check that the evaporator drain ring is not blocked
(under the body).
Repair if necessary.
Is the fault still present?
YES
Check that the scuttle panel (under the windscreen frame) is not filled with water.
If it is, check that the drain valve is fitted to the scuttle panel and is in good condition.
Replace the valve if necessary.
Has the customer just washed the vehicle?
YES
Explain to the customer that when washing the car using a
hose pipe, the water jet must not be left for too long on the air
inlet in the scuttle panel (on the bonnet).
YES
NO
NORepair.
End of fault finding procedure.
End of fault finding procedure.
AFTER REPAIRPerform a complete check using the diagnostic tool.
ACREG X84 1.1
Edition 2

62B-56
CLIMATE CONTROL
Fault finding – Fault Finding Chart62B
V3 MR-372-J84-62B000$110.mif
Vdiag No.: 44
ALP 14 Air conditioning noises during operation
NOTESOnly deal with this customer complaint after a full check with the diagnostic tool
(fault reading and configuration checks).
Check that the computers involved in the air conditioning function (Injection, Protection and
Switching Unit, UCH and Air conditioning control panel) are correctly configured.
Reconfigure if necessary (see 62A, Air conditioning, Configurations and Configuration reading).
Check that:
–the compressor fitted to the vehicle corresponds correctly to the engine (see MR 370 Mechanical, 62A, Air
conditioning, Air conditioning: Parts and consumables for the repair).
Replace the compressor if necessary (see MR 370, Mechanical, 62A, Air conditioning, Compressor: Removal
- Refitting).
–the compressor is correctly fixed (see MR 370 Mechanical, 62A, Air conditioning, Compressor: Removal -
Refitting).
Check the condition of the compressor belt and check its tension. Replace the belt if necessary (see MR 370
Mechanical, 11A, Top and front of engine, Accessories belt: Removal - Refitting).
Check that the intermediate pipes, condenser and dehydrator reservoir are correctly fitted.
–Check the mountings and brackets of the components.
–Check the contact between and proximity of the components.
(see MR 370 Mechanical, 62A, Air conditioning, Air conditioning: List and location of components).
Check the correct operation of the cooling fan assembly or passenger compartment fan assembly and
condenser:
–check the electrical supply of the fan using parameters ET007 High speed fan assembly control, AC009 Low
speed fan assembly and AC010 High speed fan assembly (see 62A, Air conditioning, Conformity check,
Cold loop sub-function).
Check the quantity of refrigerant (see MR 370 Mechanical, 62A, Air conditioning, Air conditioning: Parts
and consumables for the repair).
If the quantity of refrigerant is:
–Greater than the manufacturer's information, recharge according to the manufacturer's values (see MR 370
Mechanical, 62A, Air conditioning: Draining - Filling).
–Less than the manufacturer's information, check for leaks (see MR 370 Mechanical, 62A, Air conditioning,
Refrigerant circuit: Check).
If the fault is still present, replace the compressor (see MR 370, Mechanical, 62A, Air conditioning,
Compressor: Removal - Refitting).
AFTER REPAIRPerform a complete check using the diagnostic tool.
ACREG X84 1.1
Edition 2

62B - 60
CLIMATE CONTROL
Fault finding – Help62B
V3 MR-372-J84-62B000$120.mif
Vdiag No.: 44
Operation of the engine cooling fan assembly according to the refrigerant fluid pressure
and vehicle speed.
GMV = 1 Engine cooling fan low speed
GMV = 2 Engine cooling fan high speed
GMV = 0 Engine cooling fan stopped
The engine cooling fan assembly is not used for vehicle speeds over 42 mph (70 km/h), except in rare cases where
the refrigerant fluid pressure is above 23 bar in spite of the speed (e.g.: driving behind a lorry).
When stationary, the engine cooling fan is used systematically at low speed if the refrigerant fluid relative pressure is
below 19 bar, at high speed in the opposite case.
While driving, the engine cooling fan may either not operate, or operate at low or high speed depending on the
refrigerant fluid pressure at the condenser outlet and the vehicle speed.Pressure (relative bar)
AIR CONDITIONING DEACTIVATION
GMV = 2
GMV = 2 GMV = 1 GMV = 0
GMV = 1 GMV = 0
GMV = 1 GMV = 0
AIR CONDITIONING DEACTIVATION
12 (20) 18 (30) 27 (45) 42 (70) Vehicle speed in
mph (km/h)
ACREG X84 1.1
Edition 2