Radio system operation check
- Make
- Fiat
- Model
- 500 Factory Service Manual
- Year
- 2007–2024
- Section
- Accessories › Radio system operation check
RADIO SYSTEM OPERATION CHECK
| STEP | CHECK TO BE PERFORMED | REMEDIAL ACTION IF THE CHECK IS NOT OK |
|---|---|---|
| 1 | Check the wiring
Examine the crimping: Use a lens to examine the terminal crimping area. The barrels must be turned symmetrically and no strands should emerge from the crimped area. The bare wire section under the barrels must emerge by 0.5 | Restore the correct positioning of the connectors |
| 2 | Check power supply (+30) Check for battery voltage +30 between pin 4 of the radio connector A and earth | Check the continuity of the +30 connection between the Body Computer (fuse F36) and the radio |
| 4 | Earth check Disconnect the negative battery terminal Disconnect amplifier connector A and connect an ohmmeter accross pin 8 and earth and check the resistance is lower than 1 ohm | Restore the earth connection on the chassis in the area of the left dashboard |
| 5 | Amplifier enablement power supply check Turn the key to the ON position Using the voltmeter, check for a battery voltage between pin 5 of the radio connector A and earth | Restore correct power supply |
| Radio connectors pin out | |
|---|---|
| Pin | Function |
| A1 | Can B (high) |
| A2 | N.C. |
| A3 | Can B (low) |
| A4 | + Battery power supply |
| A5 | Power supply for subwoofer enablement |
| A6 | N.C. |
| A7 | N.C. |
| A8 | Chassis earth |
| B1 | Right rear speaker (+) |
| B2 | Right rear speaker (-) |
| B3 | Right front speaker (+) |
| B4 | Right front speaker (-) |
| B5 | Left front speaker (+) |
| B6 | Left front speaker (-) |
| B7 | Left rear speaker (+) |
| B8 | Right rear speaker (-) |
Parts & tools for this job For 2007 Fiat 500
- 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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