| STEP | CHECK TO BE PERFORMED | REMEDIAL ACTION IF THE CHECK IS NOT OK |
|---|
| 1 | Control panel circuit continuity checkDisconnect the wiring from the control panelConnect an Examiner in Ohmmeter mode between pins 1 and 2. The resistance value should read 4860 Ohms ±10% at 20°C | Replace the control panel Op. 5580M20 ON BOARD NAVIGATION SYSTEM CONTROLS - R.R. |
| 2 | SOS button checkDisconnect the wiring from the control panelConnect an Examiner in Ohmmeter mode between pins 1 and 2Press the SOS button. The resistance value should read 49 Ohms ±10% at 20°C | Replace the control panel Op. 5580M20 ON BOARD NAVIGATION SYSTEM CONTROLS - R.R. |
| 3 | NAV button checkDisconnect the wiring from the control panelConnect an Examiner in Ohmmeter mode between pins 1 and 2Press the NAV button. The resistance value should read 440 Ohms ±10% at 20°C | Replace the control panel Op. 5580M20 ON BOARD NAVIGATION SYSTEM CONTROLS - R.R. |
| 4 | INFOMOBILITY button checkDisconnect the wiring from the control panelConnect an Examiner in Ohmmeter mode between pins 1 and 2Press the INFOMOBILITY button. The resistance value should read 177 Ohms ±10% at 20°C | Replace the control panel Op. 5580M20 ON BOARD NAVIGATION SYSTEM CONTROLS - R.R. |
| 5 | Control panel power supply checkConnect the wiring for the control panelTurn the key to the MAR positionUsing an Examiner in Voltmeter mode, check for a battery voltage of 12 Volts between pins 5 and 6 | Replace fuse F49 from the dashboard control unit after finding out what caused it to blow See E4090 NAVIGATORRestore or, if necessary, replace the electrical wiring between the control panel and the dashboard control unit.Replace the control panel Op. 5580M20 ON BOARD NAVIGATION SYSTEM CONTROLS - R.R.if the previous checks have not revealed any faults |
| 6 | Button power supply checkConnect the wiring for the control panelTurn the key to the MAR positionUsing an Examiner in Voltmeter mode, check for a voltage of around 3.5 Volts between pins 1 and 2 | Replace the control panel Op. 5580M20 ON BOARD NAVIGATION SYSTEM CONTROLS - R.R. |
| 7 | Voltage signal checkConnect the wiring for the control panelTurn the key to the MAR positionUsing an Examiner in Voltmeter mode, check the voltage signals between pins 1 and 2 as in the table below:Press the SOS button and read a voltage of around 0.6 VoltsPress the NAV button and read a voltage of around 2.2 VoltsPress the INFOMOBILITY button and read a voltage of around 1.4 Volts | Replace the control panel Op. 5580M20 ON BOARD NAVIGATION SYSTEM CONTROLS - R.R. |
| 8 | Check the wiringCheck the continuity of the wiring between the control panel and the Bluetooth node See E4090 NAVIGATOR | Restore the continuity of the wiring between the control panel and the Bluetooth node. See E4090 NAVIGATORCheck for any errors on the CANIf no faults have been found during the previous checks, replace the Bluetooth node Op. 5570T49 BLUETOOTH ELECTRONIC CONTROL UNIT - R.R. |
