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 relevant controls are operated (including the boot light).

1	CHECKING INDIVIDUAL LIGHTS	All OK	Problems met	Operation
		Results of the tests
	Verify: condition of individual bulbs condition of the relevant bulb holders condition and operation of courtesy light switches.	Continue to Step 2	Faulty bulb or front courtesy light	Restore or replace the courtesy light Op. 7040E40
			Faulty bulb or rear courtesy light.	Restore or replace the courtesy light Op. 7040E16
			Faulty boot bulb or bulb holder	Restore or replace the bulb holder Op. 7040G30
2	CHECK ON INTERIOR LIGHTING ELECTRICAL CIRCUIT	All OK	Problems met	Operation
	Check, in order: Body Computer supply; connections between courtesy lights and Body Computer; connection to +30 courtesy lights; courtesy light earth connection: See E2510 COURTESY LIGHTS,	Continue to Step 3	Connections not correct	Restore correct connections See E2510 COURTESY LIGHTS
			Body Computer earth faulty	Restore earth connection: See E2510 COURTESY LIGHTS
			Faulty Body Computer supply	Restore connection: See E2510 COURTESY LIGHTS
3	CHECK ON SIGNAL	All OK	Problems met	Operation
	Check that when one of the side doors is opened, an earth signal is sent from the Body Computer to the courtesy light	Continue to Step 4	No earth signal from Body Computer	Restore the correct supply to the Body Computer. If necessary, replace the Body Computer Op. 5505A32
4	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present		Fault persists	Search for the fault starting from another symptom'

Links open Amazon search results in a new tab. As an Amazon Associate I earn from qualifying purchases.