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 rev counter E15 supply (pin 1) arrives from the ignition switch power supply(INT) through the line of fuse F22 of junction unit B1. Pin 3 is earthed.
The engine revs signal arrives on pin 4 of engine control unit M10.
This processes the information concerning engine speed through a frequency signal sent to pins 11 and 28 by rev sensor K46; these two signals have a very low intensity and are therefore suitably shielded.
COMPONENTS
| Code component | Description | Unit reference |
|---|---|---|
| B1 | Fuse carrier | 5505A |
| C20 | Right dashboard earth | 5505A |
| C60 | Injection control unit earth | - |
| D4 | Front/engine connection | - |
| D46 | Front/dashboard - rear connection | - |
| E15 | Rev counter | 5560B |
| H1 | Ignition switch | 5520A |
| K46 | Rev sensor | 5510C |
| M10 | Engine control unit | 1056B |
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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