| STEP | OPERATIONS TO BE CARRIED OUT | TEST RESULTS |
|---|
| 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 (N.P.B.):in error environment- that there are no faults;
in parameters ambient- the plausibility of all the parameters
| Move on to Step | 1. No dialogue with the NPB control unit | Restore the connection between the NPB control unit and the diagnostic socket (Wiring Diagram ) E7020 ABS |
| Presence of errors in the NPB control unit | 2. Continue following the instructions in the diagnostic table |
| 2 | CHECK USING DIAGNOSTIC EQUIPMENT | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| With the Examiner diagnostic equipment connected to the diagnostic socket, carry out the active diagnosis of the rear brake caliper actuators | Move on to Step | Actuators not activated | Move on to Step |
| 3 | ELECTRICAL SYSTEM CHECK. | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check the continuity/insulation of the electrical connections between the Parking Brake Node (N.P.B.) and the rear caliper actuators (Wiring Diagram ) E7025 ELECTRIC HANDBRAKE | Move on to Step | 1. Electrical connections faulty | 1. Restore the connections (Wiring Diagram ) E7025 ELECTRIC HANDBRAKE |
| 2. Electrical connections correct: actuators faulty | 2. Replace the rear brake caliper actuatotrs [PR.3380A66] |
| 4 | CHECK ON CORRECT OPERATION | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check the correct static and dynamic operation of the parking brake | The test is essential becaues the braking system is one of the vehicle's safety systems |
| | Fault persists | Replace the parking brake control unit [PR.3380A64] |