|  |  | Results of the tests | 
| 0 | PRELIMINARY CHECKS | All OK | Problems met | Operation | 
|---|
|  | With
the ignition in the ON position, check that the headlamp flasher
is working properly. | Continue to Step 2 | The flasher is not working. | Continue to Step  1 | 
| 1 | CHECKING OPERATION OF THE STEERING
COLUMN SWITCH UNIT | All OK | Problems met | Operation | 
|---|
|  | Check
the condition of the 'Follow me home' function circuit (steering
column switch unit headlamp flasher).  See   E2012  MAIN BEAM HEADLAMPS | Continue to Step 2 | Circuit damaged | Replace the steering column
switch unit   Op.   5550A12 | 
| 2 | CHECKING  WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation | 
|---|
|  | Connect
the diagnostic equipment (Examiner or Examiner Plus) to the CAN-EOBD
diagnostic socket, select the Body Computer function in CONTROL
UNITS TEST and check that there are no faults. |  | Fault persists | Replace the Body Computer  Op.   5505A32   Search
for the fault starting from another symptom' |