22 · Diagnostics

Ignition switch not working

Fault diagnosisIgnition switch not working

IGNITION SWITCH NOT WORKING

When the ignition is turned 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	CHECK ON 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
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	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'

3.2 V6

When the ignition is turned 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	CHECK ON 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	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present

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