|  |  | Results of the tests | 
| 1 | CHECK WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation | 
|---|
|  | Connect
the diagnostic equipment (Examiner or other instruments) to the
diagnostic socketCheck that there is a regular dialogue with the ABS control unit | Continue to Step 2 | Lack of dialogue with
the control unit | Restore: the
connection between the ABS control unit and the diagnostic connectorthe
supply for the ABS control unit (  See   E7020  ABS  ).
 | 
| An error is detected in the control unit | Continue according to the instructions for the diagnostic
equipment | 
| 2 | CHECK INSTRUMENT | All OK | Problems met | Operation | 
|---|
|  | Check
the condition of the ABS warning light., located in the instrument  see DESCRIPTION AND OPERATION: 5560 INSTRUMENT PANEL |  | The warning lights consist of LEDs
built into the electronic circuit, and so CANNOT be replaced. | 
 | Continue to Step 3 | Instrument not working | Change the instrument Op.   5560B10 | 
| 3 | CHECKING CORRECT OPERATION | All OK | Problems met | Operation | 
|---|
|  | Check
that the fault is no longer present | End of diagnosis | Fault persists | Search for the
fault starting from another symptom' |