312000611 - K006 TRIP METER DOES NOT ZERO

With the key on, the trip meter does not zero when the TRIP button on the right-hand steering wheel interface lever is operated.
Test results
1CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Connect the Examiner diagnostic equipment to the diagnostic socket.Check that there are no faults in the Instrument panelMove on to Step 2Presence of errorsContinue following the instructions for the diagnostic equipment
2ELECTRICAL CIRCUIT CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check:

  • Connections between right steering column switch unit lever and instrument panel
  • Connections between right steering column switch unit lever and earth
    See E4010 INSTRUMENT PANEL
Move on to Step 3Connections defective, earth or power supply defectiveRestore the correct connections; if necessary, replace the wiring.
3STEERING COLUMN SWITCH UNIT CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check that the TRIP button on the right-hand steering wheel interface lever is working properly    See E4010 INSTRUMENT PANEL End of diagnosisRight lever defectiveReplace the steering column switch unit    Op. 5550A10 STALK UNIT ASSEMBLY - R+R