22 · Diagnostics

Climate control not heating

Make: Alfa Romeo
Model: GT Factory Service Manual
Year: 2003–2010
Section: Climate control › Climate control not heating

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Fault diagnosisClimate control not heating

CLIMATE CONTROL NOT HEATING

The fan works properly and sends air into the interior compartment in accordance with set flow patterns, but this air does not ensure the required heating.

1	CHECK WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
		Results of the tests
	Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket Check that there are no faults in the climate control control unit.	Continue to Step 2	An error is detected in the control unit	Continue following the instructions for the diagnostic equipment
		Continue to Step 2	Communication lost with control unit - CAN error	Restore connection between climate control system control unit and body computer See See E6020 AIR CONDITIONING
2	ACTIVE DIAGNOSIS WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
	Using the diagnostic equipment (Examiner or other instruments), carry out the active diagnosis for the mixture motor	Continue to Step 3	Mixture motor connection faulty	Restore the connections See See E6020 AIR CONDITIONING
			Mixture motor faulty	Replace the motor Op. Op. 5040D88 CONTROL MOTOR OF ANY FLAP - R R WITH AIR CONDITIONER CASING REMOVED
			Fault in mixing ports	Replace the mixing motor flaps Op. Op. 5040C24 AIR CONDITIONER BOX - DISMANTLE AND REBUILD AT BENCH
3	CHECKING HEATER RADIATOR	All OK	Problems met	Operation
1.9 JTD 16V Two-zone climate control system	Check the seal of the heater radiator	Continue to Step 4	Pipe from condenser to drier filter damaged	Replace the pipe Op. 5040A52
			Pipes to compressor damaged	Replace the pipes Op. 5040A74
			Pipes to evaporator damaged	Replace the pipes Op. 5040A78
			Radiator dirty or obstructed	Clean the radiator, if necessary, replace it Op. 5040C54
2.0 JTS Two-zone climate control system	Check the seal of the heater radiator	Continue to Step 4	Pipe from compressor to condenser damaged	Replace the pipe Op. Op. 5040A50 PIPE FROM COMPRESSOR TO AIR CONDITIONER CONDENSER - R+R
			Pipe from condenser to drier filter damaged	Replace the pipe Op. 5040A52
			Pipe from drier filter to evaporator inlet pipe damaged	Replace the pipe Op. 5040A56
			Evaporator inlet pipe	Replace the pipe Op. 5040A57
			Compressor inlet pipe	Replace the pipe Op. Op. 5040A73 COMPRESSOR INLET PIPE - R R
			Pipes to evaporator damaged	Replace the pipes Op. 5040A78
			Radiator dirty or obstructed	Clean the radiator, if necessary, replace it Op. 5040C54
3.2 V6 Two-zone climate control system	Check the seal of the heater radiator	Continue to Step 4	Pipe from compressor to condenser damaged	Replace the pipe Op. Op. 5040A50 PIPE FROM COMPRESSOR TO AIR CONDITIONER CONDENSER - R+R
			Pipe from condenser to drier filter damaged	Replace the pipe Op. 5040A52
			Pipe from drier filter to evaporator inlet pipe damaged	Replace the pipe Op. 5040A56
			Compressor inlet pipe	Replace the pipe Op. Op. 5040A73 COMPRESSOR INLET PIPE - R R
			Pipes to evaporator damaged	Replace the pipes Op. 5040A78
			Radiator dirty or obstructed	Clean the radiator, if necessary, replace it Op. 5040C54
4	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis

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Parts & tools for this job For 2003 Alfa Romeo GT

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