L01 Heater does not heat
- Make
- Fiat
- Model
- Seicento Factory Service Manual
- Year
- 1998–2010
- Section
- Climate control › L01 Heater does not heat
DiagnosisL01 Heater does not heat
L01 Heater does not heat
The ECU operates the fan normally. The fan sends air to the passenger compartment according to the set flow rates but this air does not provide the heating required.
| Step | Validity | Operation to be performed | Test results | ||
|---|---|---|---|---|---|
| OK | ⚠ | 🔧 | |||
| 1 | CHECK HEATER PIPE | All OK | Problems found | Intervention | |
| Check efficiency and tightness of heater delivery and return pipes When the engine is warm, the pipes should be warm |
Go to Step 2 | Pipes not connected | Restore correct connection | ||
| Pipes dirty or clogged | Clean or replace pipes PROCEDURE OP. 5010A10 and 5010A14 | ||||
| 2 | CHECK MIXING CONTROL WIRE | All OK | Problems found | Intervention | |
| Check correct assembly of mixing control wire | Go to Step 3 | Faulty connection | Restore connection or replace wire PROCEDURE OP. 5020B42 | ||
| 3 | CHECK HEATER RADIATOR | All OK | Problems found | Intervention | |
| Check heater radiator tightness | Go to Step 4 | Pipes not connected | Restore correct connection | ||
| Radiator dirty or clogged | Clean or replace radiator PROCEDURE OP. 5020A24 | ||||
| 4 | CHECK CORRECT OPERATION | All OK | Problems found | Intervention | |
| Check the fault is no longer present | End of test | – | – | ||
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