B03 The starter motor does not work (page 3 of 5)
- Make
- Fiat
- Model
- Seicento Factory Service Manual
- Year
- 1998–2010
- Section
- Starting
DiagnosisB03 The starter motor does not work · page 3 of 5
| Step | Validity | Operation to be performed | Test results | ||
|---|---|---|---|---|---|
| All OK | Problems found | Intervention | |||
| 3 continued |
CHECK GEAR SELECTION POTENTIOMETER K93 Connect a digital multimeter (set to read Ohm) between connector K93 pin 2 and connector M85 pin 41. ~ 0 should be read. Ω |
Perform the next check | If > 10 Ω is read, the connection between the potentiometer cursor and the ECU is uncertain. | Restore connection between connector K93 pin 2 and connector M85 pin 41 (wiring diagram: E7040 "ELECTRONIC CLUTCH") |
|
| Connect a digital multimeter (set to read Ohm) between connector K93 pin 3 and connector M85 pin 14. >1 kΩ should be read. |
Perform the next check | If < 1 kΩ is read, there is a short circuit to earth. | Restore correct connection (wiring diagram: E7040 "ELECTRONIC CLUTCH") | ||
| Connect a digital multimeter (set to read Ohm) between connector K93 pin 2 and earth. >1 kΩ should be read. |
Go to Step 4 | If < 1 kΩ is read, there is a short circuit to earth. | Restore correct connection (wiring diagram: E7040 "ELECTRONIC CLUTCH") | ||
| 4 | CHECK GEAR SELECTION POTENTIOMETER K93 Disconnect connector K93. Turn the key to STOP. Connect a digital multimeter (set to read Ohm) between gear selection potentiometer pins 1 and 3. ~ 5 kΩ should be read. |
Perform the next check | If a value other than ~ 5 kΩ is read, the potentiometer resistance is damaged or broken. | Replace gear selection potentiometer K93 PROCEDURE OP. 1820E64 |
|
| Connect a digital multimeter (set to read Ohm) between gear selection potentiometer pins 1 and 2. A value between 2 - 5 k should be readΩ |
Go to Step 5 | Move the potentiometer lever (complete range). If a value other than 2 - 5 kΩ is read, the potentiometer cursor is damaged. | Replace gear selection potentiometer K93 PROCEDURE OP. 1820E64 |
||
(Cont..)
Parts & tools for this job For 1998 Fiat Seicento
- TOOLBattery testerSearch: car battery tester
- TOOLDigital multimeterSearch: automotive digital multimeter
- TOOLBattery terminal cleanerSearch: battery terminal cleaner
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