Ignition switch not working
- Make
- Fiat
- Model
- Grande Punto Factory Service Manual
- Year
- 2005–2012
- Section
- Starting › Ignition switch not working
IGNITION SWITCH NOT WORKING
When the key is turned to the ON position nothing happens, the instruments do not light up; In the starting position, the starter motor does not turn.
| Results of the tests | ||||
| 1 | BATTERY EFFICIENCY CHECK | All OK | Problems encountered | Operation |
|---|---|---|---|---|
| Check the efficiency of the battery using the appropriate diagnostic equipment | Move on to Step 2 | Battery not working properly | Replace the battery | |
| 2 | BATTERY CONNECTIONS CHECK | All OK | Problems encountered | Operation |
Check the following, in order: - correct fastening and earth connection of the negative battery terminal; - correct fastening of positive battery pole and all leads connected to it; - no oxidation at the earth point for the negative battery lead; | Move on to Step 3 | 1. Lead fastenings at the battery slack. 2. Earth lead frayed. 3. Connections with slack fastenings. | 1. Tighten the leads correctly. 2. Replace the lead Op. 5530B22 BATTERY EARTH LEAD - R+R 3. Restore the fastenings correctly. | |
| 3 | IGNITION SWITCH CIRCUIT CHECK | All OK | Problems encountered | Operation |
| Check that the correct power supply reaches the ignition switch, in particular check the condition of the maxi fuse. | Move on to Step 4 | 1. Connections not correct. 2. Fuse damaged. | 1. Restore the correct connections between the battery and the ignition switch see wiring diagram See E5010 STARTING AND RECHARING 2. Replace the fuse involved (and find out what could have caused it to blow). | |
| 4 | MAXI FUSE BOX CONNECTIONS CHECK | All OK | Problems encountered | Operation |
Check the following, in order: - condition of the maxi fuse box; - correct fastening and connection to the battery of the maxi fuse box. | Move on to Step 5 | 1. Connections not correct. 2. Maxi fuse box damaged. | 1. Restore the correct connections for the maxi fuse box to the battery see wiring diagram 2. Replace the maxi fuse box. | |
| 5 | IGNITION SWITCH CHECK | All OK | Problems encountered | Operation |
| Check the condition of the ignition switch and make sure that it is working properly. | End of diagnosis | Ignition switch faulty. | Repair or replace the ignition switch Op. 5520A18 IGNITION SWITCH CONTACT CARRIER LOCK BARREL - R.R. | |
Parts & tools for this job For 2005 Fiat Grande Punto
- TOOLOBD2 scannerSearch: OBD2 scanner
- TOOLDigital multimeterSearch: automotive digital multimeter
- TOOLBack-probe test leadsSearch: back probe test leads
Links open Amazon search results in a new tab. As an Amazon Associate I earn from qualifying purchases.