22 · Diagnostics

Ignition switch not working

Make: Fiat
Model: Doblò Factory Service Manual
Year: 2000–2010
Section: Starting › Ignition switch not working

‹ Prev Q009 driver''s air bag Next › Starter motor not working

Fault diagnosisIgnition switch not working

IGNITION SWITCH NOT WORKING

When the ignition is turned ON nothing happens. The starter motor does not turn and none of the appliances connected to the ignition barrel work.

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	Preliminarily check the efficiency of the battery	Continue to Step 1	Battery discharged	Recharge the battery Op. 5530B14
	Preliminarily check the efficiency of the battery	Continue to Step 1	Battery discharged and no longer rechargeable	Replace the battery Op. 5530B10
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 oxidation at the negative battery lead earth point; See E1010 SUPPLY	Continue to Step 2	Connections not correct	Restore the battery connections See E1010 SUPPLY
			Damaged earth lead	Replace the cable Op. 5530B22
			Cable between the battery and the starter motor.	Replace the cable Op. 5530B26
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 See E5010 STARTING AND RECHARING Supply	Continue to Step 3	Connections not correct	Restore connections between battery and ignition switch See E5010 STARTING AND RECHARING
		Continue to Step 3	Maxifuse box damaged	Replace maxifuse box Op. 5505A13
3	CHECK IGNITION SWITCH	All OK	Problems met	Operation
	Check that the correct supply is reaching the ignition switch. In particular, check the condition of the fuse See E1010 SUPPLY	Continue to Step 4	Connections not correct	Restore connections
		Continue to Step 4	Fuse damaged	Replace the damaged fuse (then search for the cause of the problem)
4	LOCK BARREL CHECK	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		Fault persists	Search for the fault starting from another symptom'

When the ignition is turned ON nothing happens. The starter motor does not turn and none of the appliances connected to the ignition barrel work.

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	Check the condition of the protective fuse See E5010 STARTING AND RECHARING	Continue to Step 1	Fuse blown	Change the blown fuse See E5010 STARTING AND RECHARING
1	CHECKING BATTERY	All OK	Problems met	Operation
	Check battery charge	Continue to Step 2	Battery charge status insufficient.	Recharge the battery Op. 5530B14
	Check battery charge	Continue to Step 2	Battery flat and no longer rechargeable	Replace the battery Op. 5530B10
2	CHECKING BATTERY	All OK	Problems met	Operation
	Check, in order: correct fixing or connection of positive and negative battery terminal No oxidation at the negative battery lead earth point;	Continue to Step 3	Connections not correct	Renew the electrical connections
		Continue to Step 3	Damaged earth lead terminal	Change the battery earth lead Op. 5530B22
3	CHECKING ELECTRICAL CIRCUIT	All OK	Problems met	Operation
	Check the continuity/insulation of the electrical connection between the battery and the engine bay control unit See E5010 STARTING AND RECHARING	Continue to Step 4	Electrical connection interrupted or not insulated.	Restore continuity/insulation of electrical connection See E5010 STARTING AND RECHARING
4	CHECKING ELECTRICAL CIRCUIT	All OK	Problems met	Operation
	Check continuity/insulation of electrical connection between the engine bay control unit and ignition barrel.	Continue to Step 5	Electrical connection interrupted or not insulated.	Restore continuity/insulation of electrical connection See E5010 STARTING AND RECHARING
5	CHECKING CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis	Fault persists	Change the ignition barrel Op. 5520A12

When the ignition is turned ON nothing happens. The starter motor does not turn and none of the appliances connected to the ignition barrel work.

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	Check the condition of the protective fuse See E5010 STARTING AND RECHARING	Continue to Step 1	Fuse blown	Change the blown fuse See E5010 STARTING AND RECHARING
1	CHECKING BATTERY	All OK	Problems met	Operation
	Check battery charge	Continue to Step 2	Battery charge status insufficient.	Recharge the battery Op. 5530B14
	Check battery charge	Continue to Step 2	Battery flat and no longer rechargeable	Replace the battery Op. 5530B10
2	CHECKING BATTERY	All OK	Problems met	Operation
	Check, in order: correct fixing or connection of positive and negative battery terminal No oxidation at the negative battery lead earth point;	Continue to Step 3	Connections not correct	Renew the electrical connections
		Continue to Step 3	Damaged earth lead terminal	Change the battery earth lead Op. 5530B22
3	CHECKING ELECTRICAL CIRCUIT	All OK	Problems met	Operation
	Check the continuity/insulation of the electrical connection between the battery and the engine bay control unit See E5010 STARTING AND RECHARING	Continue to Step 4	Electrical connection interrupted or not insulated.	Restore continuity/insulation of electrical connection See E5010 STARTING AND RECHARING
4	CHECKING ELECTRICAL CIRCUIT	All OK	Problems met	Operation
	Check continuity/insulation of electrical connection between the engine bay control unit and ignition barrel.	Continue to Step 5	Electrical connection interrupted or not insulated.	Restore continuity/insulation of electrical connection See E5010 STARTING AND RECHARING
5	CHECKING CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis	Fault persists	Change the ignition barrel Op. 5520A12

‹ Prev Q009 driver''s air bag Next › Starter motor not working

Parts & tools for this job Staging For 2000 Fiat Doblò

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