184000499 - K141 MODE BUTTON NOT WORKING
The Instrument Panel Node receives information directly from the 'Mode', '+' and '-' panel| Results of the tests | ||||
| 1 | CHECK WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
|---|---|---|---|---|
| Connect the Examiner diagnostic equipment and check, in the Instrument Panel Node ambient, that there are no errors and the following parameters are present. | Continue to Step 8 | Impossible to connect with the NQS control unit | Continue to Step 2 | |
| There are errors | Continue to Step 5 | |||
| 2 | ELECTRIC POWER SUPPLY CHECK | All OK | Problems met | Operation |
| Check that the Instrument Panel Node electrical power supply is correct See E4010 INSTRUMENT PANEL | Continue to Step 3 | Positive and/or earth electrical power supply faulty | Positive and/or earth electrical power supply faulty. | |
| 3 | CHECK ELECTRICAL CONNECTIONS | All OK | Problems met | Operation |
| Check the wiring/electrical connections for the Instrument Panel Node and between the node and the control panel, in particular that each pin is correctly connected and inserted in its housing. | Continue to Step 4 | Wiring and/or electrical connections not working. | Restore the wiring and/or damaged electrical connections. | |
| 4 | CHECK WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
| Using the Examiner, check whether it is possible to connect with the Instrument Panel Node. | Continue to Step 1 | Impossible to connect with the control unit. | Replace the instrument panel control unit Op. 5560B11 | |
| 5 | ERRORS CHECK | All OK | Problems met | Operation |
Using the Examiner in the Instrument Panel Node ambient, check that one or more of the following errors is not present:
| End of diagnosis | No additional information and/or BUS off detected. | Continue according to the instructions for the diagnostic equipment. | |
| EEPROM faulty | Replace the instrument panel control unit Op. 5560B11 | |||
| 6 | ELECTRICAL CIRCUIT CHECK | All OK | Problems met | Operation |
Check that the following components are working properly:
| Continue to Step 7 | Wiring faulty | Renew the wiring. | |
| Control panel not working properly. | Replace the control panel Op. 7040A56 | |||
| 7 | CHECK ON CORRECT OPERATION | All OK | Problems met | Operation |
| Check that the fault is no longer present | End of diagnosis | Fault persists | Continue to Step 1 | |