Connect the Examiner to the diagnostic socket.

Check that there are no faults in the Body Computer

Move onto step 2

• Check the individual lights.

Move onto step 2

Check the condition/correct rating of the individual bulbs and the bulb holder assembly

Move onto step 3

• Replace bulbs Op. 5540A44

End of diagnosis

• Repair or replace the rear lights cluster Op. 5540A44

End of diagnosis

Check, in order:

• stop lights fuse
• connection between dashboard control unit, Body Computer and brake pedal switch;
• connections between Body Computer and bulbs : Wiring diagram E2021 STOP LIGHT

Move onto step 4

• Replace the component involved (if a fuse is involved, search for the cause of the problem)

End of diagnosis

• Restore the connections : Wiring diagram E2021 STOP LIGHT

End of diagnosis

Check that the brake pedal switch is fitted correctly and working Wiring diagram E2021 STOP LIGHT

Move onto step 5

• Adjust the switch

End of diagnosis

• Replace the switch Op. 5550D10

End of diagnosis

Check that the fault is no longer present

Incorrect selection of diagnostic procedure

Incorrect selection of diagnostic procedure