312000170 - I017 REVERSING LIGHTS NOT WORKING

The reversing lights are controlled directly by the switch on the transmission connected to the positive line.
Test results
1REVERSING SWITCH CHECKAll OKProblems encounteredOperation
Check that the reversing lights control switch is working correctlyMove on to Step 2Switch with defective contactReplace the switch
2CHECK ON OPERATION OF FUSE AND RELAYAll OKProblems encounteredOperation
Check the operation of relay T6 and fuse F59 in the engine compartment junction unitMove on to Step 31. Relay defective2. Fuse blown1. Replace the relay2. Replace the fuse (and find out what could have caused it to blow)
3ELECTRICAL SYSTEM CHECKAll OKProblems encounteredOperation
Check the continuity and the insulation of the wiring between the reversing switch and the reversing lightMove on to Step 4Wiring with short circuit or open circuitRestore the correct wiring
4BULB OPERATION CHECKAll OKProblems encounteredOperation
Check that the reversing light bulb is workingMove on to Step 5Bulb defectiveReplace the reversing light bulbOp. 5550D26 REVERSING LIGHT BULB - R+R
5BODY COMPUTER CONNECTION CHECKAll OKProblems encounteredOperation
Check for deformed terminals or connections not present on the Body ComputerMove on to Step 6Missing connections/pins bentRenew the correct connections
6CORRECT OPERATION CHECKAll OKProblems encounteredOperation
Check that the fault is no longer presentEnd of diagnosisThe fault persistsReplace Body Computer    Op. 5505A32 BODY COMPUTER - R.R