| | Test results |
| 1 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
|---|
| Connect the Examiner diagnostic equipment to the diagnostic socket and check the following at the Body Computer Node:- that there are no faults at the Brake Lights- the operation of the Brake Lights through active diagnosis- the plausibility of the Brake Lights On/Off parameter | End of diagnosis | 1. Presence of error at Brake Lights bulbs2. The lights do not come on in active diagnosis3. The Brake Lights on/off parameter does not alter | 1. Proceed as instructed by the diagnostic tester2. Move on to Step 33. Move on to Step 2 |
| 2 | ELECTRICAL SYSTEM CHECK | All OK | Problems encountered | Operation |
|---|
| Check the continuity/insulation between the Body Computer Node and the rear brake lights See E2021 BRAKE LIGHTS | Move on to Step 3 | Wiring faulty | Restore the electrical connection See E2021 BRAKE LIGHTS |
| 3 | BRAKE LIGHT BULBS CHECK | All OK | Problems encountered | Operation |
|---|
| Bulb efficiency check | Move on to Step 4 | Brake light bulbs faulty | Replace the brake light bulbs Op. 5540A50 BULB FOR REAR LIGHT CLUSTER (ONE), LEFT OR RIGHT - REPLACE |
| 4 | REAR LIGHTS CHECK | All OK | Problems encountered | Operation |
|---|
| Check the condition of the rear light clusters | Move on to Step 5 | Rear light clusters faulty | Restore operation, replace the rear light clusters if necessary Op. 5540A44 REAR LIGHT CLUSTER (ONE), LEFT OR RIGHT - R.R. |
| 5 | CHECK ON CORRECT OPERATION | All OK | Problems encountered | Operation |
|---|
| Check that the fault is no longer present | End of diagnosis | Fault persists | Replace body computer Op. 5505A32 BODY COMPUTER - R.R |
