| STEP | OPERATIONS TO BE CARRIED OUT | TEST RESULTS |
|---|
| 1 | ELECTRICAL SYSTEM CHECK. | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check the following at the dashboard junction unit:- a positive output to the third brake light bulb (Wiring Diagram ) E2021 BRAKE LIGHTS
| Move on to Step | No positive output to the third brake light bulb | Move on to Step |
| 2 | DASHBOARD JUNCTION UNIT CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Remove the dashboard junction unit, separate it from the Body Computer Node and check the internal continuity (Wiring Diagram ) E2021 BRAKE LIGHTS | Move on to Step | Dashboard junction unit internal interruption | Replace the dashboard junction unit See in Op. 5505A10 Junction UNIT - R.R. |
| 3 | ELECTRICAL SYSTEM CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| check the continuity/insulation between:- left rear earth and third brake light bulb
- dashboard junction unit and third brake light bulb (Wiring Diagram ) E2021 BRAKE LIGHTS
| Move on to Step | Wiring faulty. | Repair the electrical connections (Wiring Diagram ) E2021 BRAKE LIGHTS |
| 4 | THIRD BRAKE LIGHT BULB CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| check the condition of the third brake light bulb | Move on to Step | Bulb burnt out | Replace the third brake light bulb See in Op. 5550D16 third brake light - r r |
| 5 | CHECK ON CORRECT OPERATION. | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check that the fault is no longer present | | | |
