I16 Centre stop light (third stop) not working

Fault diagnosisI16 Centre stop light (third stop) not working

When the brake pedal is pressed, with the ignition on, the central stop light ("third stop light") does not work.

Step	Test procedure	Result	Action
0	PRELIMINARY CHECKS Check the operation of the side stop lights	OK	Move onto step 1
0		The side stop lights are not working	Move onto step (see I15)
1	CHECK INDIVIDUAL LIGHTS Check the condition of the individual ten bulbs and complete bulb holder assembly	OK	Move onto step 2
		Bulbs damaged	Replace bulbs End of diagnosis
		Bulb holder faulty	Repair or replace the third stop light Op. 5050D17 End of diagnosis
2	CHECK STOP LIGHTS ELECTRICAL CIRCUIT Check, in order: stop lights fuse (services) connections between junction unit and brake pedal switch connections between junction unit and bulb bulb earth (Wiring diagram E2021 STOP LIGHT "Stop lights")	OK	Move onto step 3
		Component defective	Replace the component involved (if a fuse is involved, search for the cause of the problem) End of diagnosis
		Connections broken	Restore the connections ( End of diagnosis
3	BRAKE PEDAL SWITCH CHECK Check that the brake pedal switch is fitted correctly and working (Wiring diagram E2021 STOP LIGHT ).	OK	Move onto step 4
3		Brake pedal switch faulty	Repair or replace the brake pedal switch Op. 5550D10 End of diagnosis
4	CHECK CORRECT OPERATION Check that the fault is no longer present	OK	End of diagnosis
4		Fault persists	Incorrect selection of diagnostic procedure

Parts & tools for this job For 1997 Alfa Romeo 156

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