K07 MILOMETER NOT SWITCHING TO SHOW OUTSIDE TEMPERATURE - Alfa - 156 - eLearn

3233078 - K07 MILOMETER NOT SWITCHING TO SHOW OUTSIDE TEMPERATURE

With the ignition key in the ON position, the speedometer works properly, but does not manage to switch to the outside temperature reading.

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	Check the operation of the speedometer	Continue to Step 1	The speedometer is not working at all	See table K05
1	ZEROING BUTTON CHECK	All OK	Problems met	Operation
	Check the operation of the speedometer zeroing button ( See E4021 SPEEDOMETER ).	Continue to Step 2	Zeroing button faulty	Renew or replace the zeroing button Op. 5540C18
2	OUTSIDE TEMPERATURE SIGNAL ELECTRICAL CIRCUIT CHECK	All OK	Problems met	Operation
	Check, in order: the connection between the speedometer and the climate control unit the connection between the speedometer and the zeroing button the trip meter zeroing button earth ( See E4021 SPEEDOMETER ).	Continue to Step 3	Connections broken	Restore the connections
3	CHECK WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
	Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socketCheck that there are no faults in the climate control unit, in particular check the outside temperature sensor and the signal	Continue to Step 4	Signal not sent	Check and, if necessary, replace the outside temperature sensor Op. 5010D12
		Continue to Step 4	Climate control unit faulty	Check and, if necessary, replace the climate control unit Op. 5040D18
4	SPEEDOMETER CHECK	All OK	Problems met	Operation
	Check the operation of the speedometer, in particular the outside temperature display function: see DESCRIPTION AND OPERATION: 5560 INSTRUMENT PANEL	Continue to Step 5	Instrument not working	Replace the speedometer Op. 5560B02
5	CHECK CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis	Fault persists	Search for the fault starting from another symptom'