| 1 | CHECK USING DIAGNOSTIC EQUIPMENT | ALL OK | PROBLEMS ENCOUNTERED | ACTION | 
|---|
|  | Connect the Examiner equipment to the diagnostic socket.Check that there are no faults in the instrument panel | Move on to Step 2 | Presence of errors | Continue following the instructions for the diagnostic equipment | 
| 2 | ELECTRICAL CIRCUIT CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION | 
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|  | Check: See E4010 INSTRUMENT PANELConnections between right steering column switch unit lever and instrument panelConnections between right steering column switch unit lever and earth
 | Move on to Step 3 | Connections defective, earth or power suply defective | Restore the correct connections, if necessary, replace the wiring. | 
| 3 | STEERING COLUMN SWITCH UNIT CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION | 
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|  | Check that the TRIP button the right steering column switch unit lever is working properly    See E4010 INSTRUMENT PANEL | Move on to Step 4 | Right lever defective | Replace the steering column switch unit    Op. 5550A10 STALK UNIT ASSEMBLY - R+R | 
| 4 | CHECK ON CORRECT OPERATION | ALL OK | PROBLEMS ENCOUNTERED | ACTION | 
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|  | Check that the fault is no longer present | End of diagnosis |  |  |