22 · Diagnostics

Instrument panel lights not working

Fault diagnosisInstrument panel lights not working

INSTRUMENT PANEL LIGHTS NOT WORKING

With the ignition on, the display either does not show the time or it is not correct;

the interior lights on signal is sent from the "body computer node", via the B-CAN, to the "instrument panel node".

STEP	OPERATIONS TO BE CARRIED OUT	TEST RESULTS
1	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Connect the Examiner diagnostic equipment to the diagnostic connector and check the following at the CAN: no control unit not activated; that there are no faulty control units; no control unit with faulty CAN line;	Move on to Step	Presence of faults	Continue following the instructions for the diagnostic equipment
2	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Keeping the Examiner diagnostic equipment connected to the diagnostic connector, check the following at the instrument panel node:in active diagnosis ambient the operation of the panel lighting.	Move on to Step	The instrument panel does not light up	Replace instrument panel See in Op. 5560B11 ANALOGUE CONTROL PANEL - R.R. or Replace
3	CHECK ON CORRECT OPERATION	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the fault is no longer present		Fault persists	Replace body computer See in Op. 5505A32 BODY COMPUTER - R.R.

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