B01 IGNITION SWITCH NOT WORKING - Alfa - 156 - eLearn

3233001 - B01 IGNITION SWITCH NOT WORKING

When the ignition is switched on, nothing happens, the instruments do not light up; In the Start position, the starter motor does not turn.

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	First check the efficiency of the battery	Continue to Step 1	Battery discharged	Charge or replace the battery
1	CHECK BATTERY CONNECTIONS	All OK	Problems met	Operation
	Check, in order: correct fixing or connection to earth of negative battery terminal correct fixing of positive battery terminal and that all leads are connected no corrosion at the negative battery lead earth point	Continue to Step 2	Connections not correct	Restore the battery connections ( See E1010 SUPPLY )
		Continue to Step 2	Cable damaged	Replace the cable concerned (see Assembly 5530B)
2	CHECK MAXIFUSE BOX CONNECTIONS	All OK	Problems met	Operation
	Check, in order: condition of two maxifuse boxes correct fixing and connection to battery of maxifuse boxes	Continue to Step 3	Connections not correct	Restore the connections of the maxifuse boxes to the battery ( See E1010 SUPPLY ).
		Continue to Step 3	Maxifuse box damaged	Replace maxifuse box
3	CHECK IGNITION SWITCH CIRCUIT	All OK	Problems met	Operation
	Check that the correct supply is reaching the ignition switch. In particular, check the condition of the 'IGN' maxifuse	Continue to Step 4	Connections not correct	Restore connections between battery and ignition switch ( See E5010 STARTING AND RECHARING ).
		Continue to Step 4	Fuse damaged	Replace the fuse concerned: (then search for the cause of the problem)
4	CHECK LOCK BARREL	All OK	Problems met	Operation
	Check condition of lock barrel and correct operation	Continue to Step 5	Lock barrel faulty	Renew or replace the lock barrel Op. 5520A14
5	CHECK IGNITION SWITCH	All OK	Problems met	Operation
	Check condition and correct operation of ignition switch.	Continue to Step 6	Ignition switch faulty.	Renew or replace the ignition switch Op. 5520A12
6	CHECKING 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'

When the ignition is switched on, nothing happens, the instruments do not light up; In the Start position, the starter motor does not turn.

1	BATTERY EFFICIENCY CHECK	All OK	Problems met	Operation
		Results of the tests
	Check the efficiency of the battery using the appropriate diagnostic equipment	Continue to Step 2	Battery not working properly	Replace battery
2	CHECK FASTENINGS	All OK	Problems met	Operation
	Check, in order: Correct fixing or connection to earth of negative battery terminal Correct fixing of positive battery terminal and that all leads are connected No corrosion of the cable fastenings Correct fixing and connection between positive terminal and control unit with maxifuse at battery	Continue to Step 3	Cable fastenings at battery slack	Tighten cables
			Earth lead frayed	Replace lead Op. 5530B22
			Connections with slack fastenings	Restore fastenings
			Maxifuse burnt	Check the causes of the burnt fuse and replace it: wiring diagram See E1010 SUPPLY
3	CHECKING POWER SUPPLY	All OK	Problems met	Operation
	Check switch supply	Continue to Step 4	No supply reaches the switch	Check the continuity of the wiring between the maxifuse at the battery control unit and the switch See E1010 SUPPLY
4	CHECKING SWITCH	All OK	Problems met	Operation
	Check condition and correct operation of the switch	Continue to Step 5	Switch contacts not working properly	Replace switch Op. 5520A12
5	CHECKING 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'