C10 Gears are not engaged
- Make
- Fiat
- Model
- Seicento Factory Service Manual
- Year
- 1998–2010
- Section
- Gear shifting › C10 Gears are not engaged
DiagnosisC10 Gears are not engaged
C10 Gears are not engaged
When the vehicle is stationary and the engine is running, the gear cannot be engaged. It scrapes (the clutch does not disengage).
First check:
- fuse B51 intactness (wiring diagram: E7040 "ELECTRONIC CLUTCH")
- presence of oil in the hydraulic circuit reservoir
- intactness of connection between clutch disengagement lever and electric control
- intactness and correct connection of connectors N91 and M85
| Step | Validity | Operation to be performed | Test results | ||
|---|---|---|---|---|---|
| All OK | Problems found | Intervention | |||
| 1 | CHECK POWER UNIT N91 AND WIRING | ||||
| Remove connector N91 and turn the key to MAR. Connect a digital multimeter (set to read Volt) as follows: – red probe to connector N91 in R – black probe to connector N91 pin N Check for presence of battery voltage |
Perform the next check | No battery voltage is found. The power unit is not powered. | Restore connection between power unit and battery (wiring diagram: E7040 "ELECTRONIC CLUTCH") | ||
| Remove connector N91. Turn key to STOP. Connect a digital multimeter (set to read Ohm) between connector N91 pin N and earth. ~ 0 Ω should be read. |
Perform the next check | If > 10 Ω is read, the connection to earth is uncertain. | Restore earth connection (wiring diagram: E7040 "ELECTRONIC CLUTCH") | ||
| Turn the key to STOP. Disconnect power unit N91. Disconnect ECU connector M85. Connect a digital multimeter (set to Ohm) between connector N91 pin 1 and connector M85 pin 20. ~ 0 Ω should be read. |
Perform the next check | If > 10 Ω is read, the connection is uncertain. | Restore correct connection. (wiring diagram: E7040 "ELECTRONIC CLUTCH") | ||
| Connect a digital multimeter (set to Ohm) between connector N91 pin 2 and connector M85 pin 18. ~ 0 Ω should be read. |
Perform the next check | If > 10 Ω is read, the connection is uncertain. | Restore correct connection. (wiring diagram: E7040 "ELECTRONIC CLUTCH") | ||
| Connect a digital multimeter (set to Ohm) between connector N91 pin 3 and connector M85 pin 19. ~ 0 Ω should be read. |
Perform the next check | If > 10 Ω is uncertain | Restore correct connection. (wiring diagram: E7040 "ELECTRONIC CLUTCH") | ||
(Cont..)
Parts & tools for this job For 1998 Fiat Seicento
- TOOLTorque wrenchSearch: 3/8 inch torque wrench
- TOOLSocket setSearch: socket set metric
- BOOKHaynes manualSearch: Haynes manual Fiat Seicento
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