Climate control not heating
- Make
- Alfa Romeo
- Model
- 147 Factory Service Manual
- Year
- 2000–2004
- Section
- Climate control › Climate control not heating
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.
| Results of the tests | ||||
| 1 | CHECKING WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
|---|---|---|---|---|
Connect the diagnostic equipment (Examiner) 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 | |
| Lack of dialogue with the control unit | Restore connection between climate control system control unit and body computer See E6020 AIR CONDITIONING | |||
| 2 | ACTIVE DIAGNOSIS WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
| Using the diagnostic equipment (Examiner), carry out active diagnosis on the mixing motor (for manual versionj) or the two right and left mixing motors (for automatic version) | Continue to Step 3 | Mixing motor connection faulty | Restore the connections See E6020 AIR CONDITIONING | |
| Fault in left mixing motor flap | Replace the motor Op. 5040D84 | |||
| Fault in right mixing motor flap | Replace the motor Op. 5040D84 | |||
| Fault in mixing ports | Replace the mixing motor ports see under Op. 5040C24 | |||
| 3 | CHECKING HEATER PIPES | All OK | Problems met | Operation |
| Check the efficiency and seal of the supply and return pipes to/from the heater. | Continue to Step 4 | Pipes incorrectly connected | Restore the correct connection | |
| Pipes damaged | Replace the pipes Op. 5040C24 | |||
| 4 | CHECKING HEATER RADIATOR | All OK | Problems met | Operation |
| Check the seal of the heater radiator | Continue to Step 5 | Radiator dirty or obstructed | Clean the radiator and replace if necessary Op. 5040C24 | |
| 5 | CHECKING CORRECT OPERATION | All OK | Problems met | Operation |
| Check that the fault is no longer present | Fault persists | Search for the fault starting from another symptom' | ||
Parts & tools for this job For 2000 Alfa Romeo 147
- TOOLA/C manifold gauge setSearch: AC manifold gauge set
- TOOLUV leak detection kitSearch: AC UV leak detection kit
- PARTCabin filterSearch: Alfa Romeo 147 2000 cabin filter
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