Preliminarily check the efficiency of the battery

Move onto step 1

• Charge or replace the battery

End of diagnosis

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

Move onto step 2

• Restore the battery connections (Wiring diagram E1010 POWER SUPPLY )

End of diagnosis

• Replace the cable concerned (see Assembly 5530B)

End of diagnosis

Check, in order:

• condition of two maxifuse boxes
• correct fixing and connection to battery of maxifuse boxes

Move onto step 3

• Restore the connections of the maxifuse boxes to the battery (Wiring diagram E1010 POWER SUPPLY ).

End of diagnosis

• Replace maxifuse box

End of diagnosis

Check that the correct supply is reaching the ignition switch. In particular, check the condition of the "IGN" maxifuse

Move onto step 4

• Restore connections between battery and ignition switch (Wiring diagram E5010 IGNITION AND RECHARGING ).

End of diagnosis

• Replace the fuse concerned: (then search for the cause of the problem)

End of diagnosis

Check condition of lock barrel and correct operation

Move onto step 5

• Renew or replace the lock barrel Op. 5520A14

End of diagnosis

Check condition and correct operation of ignition switch.

Move onto step 6

• Renew or replace the ignition switch Op. 5520A12

End of diagnosis

Check that the fault is no longer present.

End of diagnosis

Incorrect selection of diagnostic procedure