323000936 - I015 (SIDE) BRAKE LIGHTS NOT WORKING

The brake lights are not working; the third brake light is working normally;
The left and right brake lights are operated directly by the Body Computer Node using information coming from the brake lights switch.
Test results
1CHECK USING DIAGNOSTIC EQUIPMENTAll OKProblems encounteredOperation
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 parameterEnd of diagnosis1. Presence of error at Brake Lights bulbs2. The lights do not come on in active diagnosis3. The Brake Lights on/off parameter does not alter1. Proceed as instructed by the diagnostic tester2. Move on to Step 33. Move on to Step 2
2ELECTRICAL SYSTEM CHECKAll OKProblems encounteredOperation
Check the continuity/insulation between the Body Computer Node and the rear brake lights    See E2021 BRAKE LIGHTS Move on to Step 3Wiring faultyRestore the electrical connection    See E2021 BRAKE LIGHTS
3BRAKE LIGHT BULBS CHECKAll OKProblems encounteredOperation
Bulb efficiency checkMove on to Step 4Brake light bulbs faultyReplace the brake light bulbs    Op. 5540A50 BULB FOR REAR LIGHT CLUSTER (ONE), LEFT OR RIGHT - REPLACE
4REAR LIGHTS CHECKAll OKProblems encounteredOperation
Check the condition of the rear light clustersMove on to Step 5Rear light clusters faultyRestore operation, replace the rear light clusters if necessary    Op. 5540A44 REAR LIGHT CLUSTER (ONE), LEFT OR RIGHT - R.R.
5CORRECT OPERATION CHECKAll OKProblems encounteredOperation
Check that the fault is no longer presentEnd of diagnosisFault persistsReplace body computer    Op. 5505A35 MAIN BODY COMPUTER/JUNCTION UNIT - R.R.