With the ignition key to MAR and the side lights on, the instrument panel lights up, but when the lighting controls are operated it remains on constantly.
| 1 | ACTIVE DIAGNOSIS CHECK | All OK | Problems encountered | Operation |
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| With the Examiner in Instrument Panel Node mode, check that the instrument panel light is correctly activated in Active Diagnosis. | Move on to Step 6 | The panel lighting is not activated. | Replace the Instrument Panel Op. 5560B10 CONTROL PANEL - R+R |
| 2 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
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| With Examiner in Instrument Panel Node mode, check that there are no errors and that the lighting parameter varies. | Move on to Step 3 | 1. Presence of errors.2. The parameter values do not change. | 1. Continue by following the instructions on the diagnostic instrument.2. Move on to Step 3 |
| 3 | CONNECTIONS CHECK | All OK | Problems encountered | Operation |
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| Check the continuity of the wiring between the control panel and instrument panel [EL_4010]. Also check that the +/- Menu key works. | End of diagnosis. | 1. Electrical connections not operational.2. Buttons faulty. | 1. Renew the damaged electrical connections See E4010 INSTRUMENT PANEL 2. Replace the control panel Op. 7040A82 SWITCH UNIT ON LEFT SIDE OF DASHBOARD - R.R. |
