| STEP | OPERATIONS TO BE CARRIED OUT | TEST RESULTS | 
|---|
| 0 | PRELIMINARY CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION | 
|---|
|  | Check: no parking brake fault messageno Parking Brake WARNING LIGHT fault message
 | Move on to Step | 1. Parking brake fault message present on matrix | Move on to Step | 
| 2. Parking EPB warning light fault message present on matrix | Move on to Step | 
| 1 | CHECK USING DIAGNOSTIC EQUIPMENT | ALL OK | PROBLEMS ENCOUNTERED | ACTION | 
|---|
|  | Connect the Examiner diagnostic equipment to the diagnostic connector check the following at the Parking Brake node: in error environment no system/component faults
 | Move on to Step | Presence of system/component faults | Continue following the instructions in the diagnostic table | 
| 2 | CHECK USING DIAGNOSTIC EQUIPMENT | ALL OK | PROBLEMS ENCOUNTERED | ACTION | 
|---|
|  | Connect the Examiner diagnostic equipment to the diagnostic connector check the following at the Parking Brake node:in error environment no EPB input signal fault
 | Move on to Step | Presence of fault | Move on to Step | 
| 3 | ELECTRICAL SYSTEM CHECK. | ALL OK | PROBLEMS ENCOUNTERED | ACTION | 
|---|
|  | Remove the instrument panel and check continity/insulation of the wiring between the Parking Brake Node and the Instrument Panel Node (Wiring Diagram    )  E4010  INSTRUMENT PANEL | Move on to Step | wiring not insulated or interrupted | Restore the electrical connection (Wiring Diagram    )  E4010  INSTRUMENT PANEL | 
| 4 | CHECK USING DIAGNOSTIC EQUIPMENT | ALL OK | PROBLEMS ENCOUNTERED | ACTION | 
|---|
|  | Keeping the Examiner diagnostic equipment connected to the diagnostic connector, check the following at the Parking Brake node: In active diagnosis environment operation of the parking brake fault warning light
 | Move on to Step | The warning light is not activated | Replace instrument panel                           See in Op.   5560B11  ANALOGUE CONTROL PANEL - R.R. or Replace | 
| 5 | CHECK ON CORRECT OPERATION | ALL OK | PROBLEMS ENCOUNTERED | ACTION | 
|---|
|  | Check that the fault is no longer present
 |  | Fault persists | Change Parking brake node [PR. 3380A64]    See in Op.   3380A64  Electrically operated parking brake electronic control unit - R.R. |