Engine coolant temperature gauge not working
- Make
- Fiat
- Model
- Doblò Factory Service Manual
- Year
- 2000–2010
- Section
- Instrument panel › Engine coolant temperature gauge not working
‹ Prev Fuel reserve warning light flashingNext › Engine coolant overheating warning light not working
Fault diagnosisEngine coolant temperature gauge not working
ENGINE COOLANT TEMPERATURE GAUGE NOT WORKING
| Results of the tests | ||||
| 1 | INSTRUMENT PANEL CONTROL UNIT TEST | All OK | Problems met | Operation |
|---|---|---|---|---|
Use an EXAMINER to carry out active diagnosis of the maximum engine coolant temperature gauge. The coolant gauge pointer should reach full scale deflection | Continue to Step 2 | The pointer does not move or moves jerkily | Replace the instrument panel Op. 5560B11 | |
| 2 | CHECKING PARAMETER IS CONSISTENT | All OK | Problems met | Operation |
Connect the EXAMINER to the testing socket. Check the temperature shown on the instrument is consistent with the parameter recorded by the injection control unit | Continue to Step 5 | Inconsistent parameters | Continue to Step 3 | |
| 3 | CHECKING ELECTRICAL CIRCUIT | All OK | Problems met | Operation |
| Instrument panel See E4010 INSTRUMENT PANEL | Continue to Step 4 | Connections not correct | Restore connections | |
| 4 | CHECKING TEMPERATURE SENSOR ELECTRICAL CIRCUIT | All OK | Problems met | Operation |
| 1.2 8v | Check coolant temperature sensor power supply and earth in order See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT | Continue to Step 5 | Sensor defective | Replace water temperature sensor Op. 1056B50 |
| Connections not correct | Restore connections See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT | |||
| 1.9 DIESEL | Check coolant temperature sensor power supply and earth in order See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT | Continue to Step 5 | ||
| 5 | CHECK ON CORRECT OPERATION | All OK | Problems met | Operation |
| 1.2 8v | Check that the fault is no longer present | Fault persists: engine control unit defective | Replace engine management control unit Op. 1056B82 Search for the fault starting from another symptom' | |
| 1.9 DIESEL | Check that the fault is no longer present | Fault persists: engine control unit defective | Replace engine management control unit Op. 1060D80 Search for the fault starting from another symptom' | |
‹ Prev Fuel reserve warning light flashingNext › Engine coolant overheating warning light not working
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