Climate control too cold
- Make
- Fiat
- Model
- Stilo Factory Service Manual
- Year
- 2001–2007
- Section
- Climate control › Climate control too cold
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.
| Results of the tests | ||||
| 1 | CHECKING SYSTEM PRESSURE | All OK | Problems met | Operation |
|---|---|---|---|---|
| Connect the climate control system to the repressurizing equipment and check the system pressure | Continue to Step 2 | System pressure incorrect. | Restore correct system pressure.Op. 5040A10 | |
| 2 | CHECKING WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
Connect an Examiner and check for errors:
| Continue to Step 4 | Air mixing motor damaged | Continue to Step 3 | |
| Treated air sensor damaged. | Continue to Step 3 | |||
| Frost sensor damaged. | Continue to Step 3 | |||
| 3 | CHECKING ELECTRICAL CIRCUIT | All OK | Problems met | Operation |
Check electrical connection continuity/insulation:
| Continue to Step 8 | Electrical connection interrupted or not insulated. | Restore electrical connection continuity/insulation | |
| 4 | CHECKING PIPES AND FILTER | All OK | Problems met | Operation |
| Check high and low pressure pipes and air conditioning system filter are not blocked. | Continue to Step 5 | Pipes from compressor to condenser blocked. | Change the pipe from compressor to condenser Op. 5040A50 | |
| Pipes from compressor to condenser blocked. | Change the pipe from condenser to filter Op. 5040A52 | |||
| Pipes from compressor to condenser blocked. | Change the pipe from filter to expansion valve Op. 5040S54 | |||
| Pipes from compressor to condenser blocked. | Replace the filter Op. 5040A44 | |||
| 5 | CONDENSER CHECK | All OK | Problems met | Operation |
| Check that the condenser is not blocked. | Continue to Step 6 | Condenser blocked | Replace the condenser Op. 5040A40 | |
| 6 | EXPANSION VALVE CHECK | All OK | Problems met | Operation |
| Check that the expansion valve is working properly | Continue to Step 8 | Expansion valve not working properly | Replace the expansion valveOp. 5040B30 | |
| 7 | CHECKING CORRECT OPERATION USING A TESTER | All OK | Problems met | Operation |
Check errors do not persist:
| End of diagnosis | Air mixing motor damaged | Change mixed air motor (if LH) Op. 5040D84 Change mixed air motor (if RH) Op. 5040D86 | |
| Air mixing motor damaged | Change the treated air sensorOp. 5010D28 | |||
| Air mixing motor damaged | Change the frost sensorOp. 5040D22 | |||
| 8 | CHECKING CORRECT OPERATION | All OK | Problems met | Operation |
| Check that the fault is no longer present | End of diagnosis | Fault persists | Change the climate control nodeOp. 5040D18 Search for the fault starting from another symptom' | |
Parts & tools for this job For 2001 Fiat Stilo
- TOOLA/C manifold gauge setSearch: AC manifold gauge set
- TOOLUV leak detection kitSearch: AC UV leak detection kit
- PARTCabin filterSearch: Fiat Stilo 2001 cabin filter
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