Description of operation
- Make
- Fiat
- Model
- Seicento Factory Service Manual
- Year
- 1998–2010
- Section
- E4020 Rev counter › Description of operation
Wiring diagramsDescription of operation
DESCRIPTION OF OPERATION
The supply for the rev counter E15 (pin 1) is controlled by the ignition (INT) via the line for fuse F22 of the junction unit B1. Pin 3 is earthed C20.
The rev counter E15 receives the engine rpm signal at pin 4 processed by the control unit M10 via pin 9 connector A.
The sensor K46 sends a signal whose frequency is proportional to the engine rpm at pins 25 and 35 of the control unit M10; the connection is shielded to prevent interference between the control unit and the sensor.
COMPONENTS
| Component code | Description | Assembly drawing reference |
|---|---|---|
| B01 | Junction unit | - |
| C20 | Radio phone earth | - |
| C20 | Right dashboard earth | - |
| C60 | Injection ECU earth | - |
| D04 | Front / engine coupling | - |
| D46 | Rear dashboard./ front- coupling | - |
| E15 | Rev counter | 5560B |
| E50 | Instrument panel | 5560B |
| H01 | Ignition switch | 5520A |
| K46 | RPM sensor | 5510C |
| M10 | Engine management ECU | - |
| M10 | Engine management ECU | 1056A |
Parts & tools for this job For 1998 Fiat Seicento
- TOOLDigital multimeterSearch: automotive digital multimeter
- PARTAssorted fuse kitSearch: car fuse assortment kit
- TOOLWire crimper and connector kitSearch: wire crimper connector kit
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