Interior lights not working / under no circumstances

Fault diagnosisInterior lights not working / under no circumstances

INTERIOR LIGHTS NOT WORKING / UNDER NO CIRCUMSTANCES

The interior lights do not work when the controls are operated. The interior lights are controlled by the Body Computer Node BSI.

The lights on the same supply branch are:

STEP	OPERATIONS TO BE CARRIED OUT	TEST RESULTS
0	PRELIMINARY CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the condition of the interior lighting system.	Move on to Step	1. Interior lighting system completely faulty	1. Continue as described in the table See table I55 INTERIOR LIGHTS NOT WORKING / TIMED
	Check the condition of the interior lighting system.	Move on to Step	2. Individual courtesy light faulty.	Move on to Step
1	INDIVIDUAL BULB CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the condition of the individual bulbs and the associated bulb holder which often also contains the switch for the actual lights	Move on to Step	1. Bulbs damaged	1. Replace the bulbs
		Move on to Step	2. Bulb holder unit fault	2. Renew and/or replace the bulb holder
2	INTERIOR LIGHTS ELECTRICAL CIRCUIT CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the following, in order: Service fuse(s). Wiring between Body Computer and courtesy light involved. Supply for individual courtesy light. Earth for individual courtesy light. See E2510 COURTESY LIGHTS	Move on to Step	1. Component defective	1. Replace the component involved (in the case of a fuse, find out what caused it to blow).
		Move on to Step	2. Connections interrupted	2. Restore the electrical connections.
3	CHECK ON CORRECT OPERATION	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the fault is no longer present

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