22 · Diagnostics

Climate control too cold

Make: Alfa Romeo
Model: GT Factory Service Manual
Year: 2003–2010
Section: Climate control › Climate control too cold

‹ Prev Climate control not cooling Next › Climate control not heating

Fault diagnosisClimate control too cold

CLIMATE CONTROL TOO COLD

The control button operates the passenger compartment air fan normally, but the temperature of the air is not correct.

1	AIR TEMPERATURE CHECK	All OK	Problems met	Operation
		Results of the tests
	Check the temperature of the air at the vents	Continue to Step 8	Ambient temperature at the vents	Continue to Step 2
	Check the temperature of the air at the vents	Continue to Step 8	Temperature at the vents higher than desired	Continue to Step 3
2	CHECKING SYSTEM PRESSURE	All OK	Problems met	Operation
	Connect the climate control system to the recharging equipment and check the system pressures	Continue to Step 8	High and low pressure values below correct figures	Repressurize the system Op. Op. 0010T84 COOLANT FOR AIR CONDITIONING SYSTEM DEHYDRATE AND RECHARGE
			High and low pressure values above correct figures	Continue to Step 3
			Low pressure value correct, but high pressure value above correct figure (rapid compressor cycle as engine rpm increases)	Continue to Step 4
			Low pressure value high and high pressure value below correct figure	Replace the compressor Op. Op. 5040A20 AIR CONDITIONER COMPRESSOR - R+R - INCLUDES FLUID LEVEL CHECK AND TOP UP IF NECESSARY
			High and low pressure vaules do not alter when the air conditioning is activated.	Replace the compressor Op. Op. 5040A20 AIR CONDITIONER COMPRESSOR - R+R - INCLUDES FLUID LEVEL CHECK AND TOP UP IF NECESSARY
3	CONDENSER FAN CHECK	All OK	Problems met	Operation
	Check that the fan cools the condenser correctly.	Continue to Step 4	Electric fan defective	Replace the electric fan Op. Op. 5040C30 FAN MOTOR - R+R
4	CIRCUIT LOADING CHECK	All OK	Problems met	Operation
	Check that the system loading is not excessive.	Continue to Step 5	System loading excessive.	Restore the correct loading Op. Op. 0010T84 COOLANT FOR AIR CONDITIONING SYSTEM DEHYDRATE AND RECHARGE
5	COOLANT CIRCUIT OBSTRUCTION CHECK	All OK	Problems met	Operation
1.9 JTD 16V Two-zone climate control system	Check that the pipes and the filter are not obstructed.	Continue to Step 6	Pipe from condenser to drier filter obstructed	Replace the pipe Op. 5040A52
1.9 JTD 16V Two-zone climate control system	Check that the pipes and the filter are not obstructed.	Continue to Step 6	Filter obstructed	Replace the filter Op. Op. 5040A44 AIR CONDITIONER DEHYDRATING FILTER/ACCUMULATOR - R+R
2.0 JTS 3.2 V6 Two-zone climate control system	Check that the pipes and the filter are not obstructed.	Continue to Step 6	Pipe from compressor to condenser obstructed	Replace the pipe Op. Op. 5040A50 PIPE FROM COMPRESSOR TO AIR CONDITIONER CONDENSER - R+R
			Pipe from condenser to filter obstructed	Replace the pipe Op. 5040A52
			Pipe from filter to evaporator obstructed	Replace the pipe Op. 5040A56
			Filter obstructed	Replace the filter Op. Op. 5040A44 AIR CONDITIONER DEHYDRATING FILTER/ACCUMULATOR - R+R
6	CONDENSER CHECK	All OK	Problems met	Operation
	Check that the condenser is not blocked.	Continue to Step 7	Condenser blocked	Replace the condenser Op. Op. 5040A40 AIR CONDITIONER CONDENSER - R+R
7	EXPANSION VALVE CHECK	All OK	Problems met	Operation
	Check the operation of the expansion valve.	Continue to Step 8	Expansion valve defective	Replace the expansion valve Op. Op. 5040B30 EXPANSION VALVE (TUBE ORIFICE) - R+R
8	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis

‹ Prev Climate control not cooling Next › Climate control not heating

Parts & tools for this job For 2003 Alfa Romeo GT

Links open Amazon search results in a new tab. As an Amazon Associate I earn from qualifying purchases.