| | Results of the tests |
| 1 | CHECKING WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
|---|
| Connect
the Examiner to the diagnostic socketCheck that there are no faults in the Body Computer | Continue to Step 2 | Brake lights faulty. | Check the individual lights. Continue
to Step 2 |
| 2 | CHECK ON INDIVIDUAL LIGHTS | All OK | Problems met | Operation |
|---|
| Check
the condition of the individual bulbs and complete bulb holder assembly | Continue to Step 3 | Bulbs damaged/unsuitable | Replace bulbs |
| Bulbs damaged/unsuitable | Renew or replace the rear light cluster |
| 3 | BRAKE LIGHTS ELECTRICAL CIRCUIT CHECK | All OK | Problems met | Operation |
|---|
| Check, in order: - stop lights fuse
- connection between dashboard control unit, Body Computer
and brake pedal switch;
- connections between Body Computer and bulbs
- bulb earth : See E2021 BRAKE LIGHTS
| Continue to Step 4 | Defective component | Replace the component involved
(if a fuse is involved, search for the cause of the problem) |
| Connections broken | Restore the connections |
| Faulty earth | Restore the earth contact See E2021 BRAKE LIGHTS |
| 4 | CHECK ON BRAKE PEDAL SWITCH | All OK | Problems met | Operation |
|---|
| Check
that the brake pedal switch is fitted correctly and working See E2021 BRAKE LIGHTS | Continue to Step 5 | Switch fastening / adjustment
incorrect | Adjust the switch |
| Brake pedal switch faulty | Replace the switch |
| 5 | CHECKING FACIA CONTROL UNIT | All OK | Problems met | Operation |
|---|
| Check
the continuity of the facia control unit internal circuit See E2021 BRAKE LIGHTS | Continue to Step 6 | Facia control unit circuit
broken | Change
the facia junction unit |
| 6 | CHECK ON CORRECT OPERATION | All OK | Problems met | Operation |
|---|
| Check
that the fault is no longer present | End of diagnosis | | |
