Heater not working / at different speeds
- Make
- Fiat
- Model
- Doblò Factory Service Manual
- Year
- 2000–2010
- Section
- Climate control › Heater not working / at different speeds
Fault diagnosisHeater not working / at different speeds
HEATER NOT WORKING / AT DIFFERENT SPEEDS
The heater works, but the air flow in the passenger compartment does not alter when the position of the speed selector is changed.
| Results of the tests | ||||
| 1 | FAN CONTROL CHECK | All OK | Problems met | Operation |
|---|---|---|---|---|
| Check the continuity at the passenger compartment air fan control contacts See E6010 HEATER | Continue to Step 2 | Passenger compartment air fan control defective. | Replace the control Op. 5020B22 | |
| 2 | ADJUSTMENT RESISTANCES CHECK | All OK | Problems met | Operation |
| Check the continuity of the passenger compartment air fan speed adjustment resistances See Test 5040CC | Continue to Step 3 | Adjustment resistances open circuit | Replace the resistance Op. 5020A44 | |
| 3 | CHECK ELECTRICAL CIRCUIT | All OK | Problems met | Operation |
| Check the continuity of the connecting cables between the passenger compartment air fan control, the adjustment resistances and the fan motor See E6010 HEATER | Continue to Step 4 | Connections not correct | Restore connections | |
| 4 | CHECK ON 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 Fiat Doblò
- TOOLA/C manifold gauge setSearch: AC manifold gauge set
- TOOLUV leak detection kitSearch: AC UV leak detection kit
- PARTCabin filterSearch: Fiat Doblò 2000 cabin filter
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