| STEP | OPERATIONS TO BE CARRIED OUT | TEST RESULTS |
|---|
| 1 | ELECTRICAL SYSTEM CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Remove the control panel and check for the power supply positive at the lumbar adjustment control. | Move on to Step | No power supply positive | Move on to Step |
| 2 | ELECTRICAL SYSTEM CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check the continuity of the electrical connection between the control panel and the seat coupling | Move on to Step | Electrical connection faulty | Replace the seat wiring (Wiring Diagram ) E3076 ELECTRICALLY-ADJUSTABLE SEATS |
| 3 | COMPONENT CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check the operation of the lumbar adjustment control. (Wiring Diagram ) E3076 ELECTRICALLY-ADJUSTABLE SEATS | Move on to Step | Lumbar adjustment control faulty | Replace the lumbar adjustment control |
| 4 | ELECTRICAL SYSTEM CHECK. | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Remove the rear backrest cover and check:- the operation of the lumbar adjustment pump
- the continuity/insulation between the lumbar adjustment control and the lumbar adjustment pump (Wiring Diagram ) E3076 ELECTRICALLY-ADJUSTABLE SEATS
| Move on to Step | 1. Lumbar adjustment pump faulty | 1. replace the lumbar adjustment pump See in Op. 7045A38 DEVICE for LUMBAR ADJUSTMENT of driver's seat backrest - R.R. with seat removed |
| 2. Electrical equipment faulty | 2. restore the electrical connection (Wiring Diagram ) E3076 ELECTRICALLY-ADJUSTABLE SEATS |
| 5 | COMPONENT CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check the condition of the bags and the pneumatic connection to the lumbar adjustment pump | Move on to Step | Lumbar adjustment bags or pipes damaged | Replace the lumbar adjustment pneumatic unit. See in Op. 7045A38 DEVICE for LUMBAR ADJUSTMENT of driver's seat backrest - R.R. with seat removed |
| 6 | CHECK ON CORRECT OPERATION | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check that the fault is no longer present | | | |
