3233097 - K63 HANDBRAKE WARNING LIGHT OFF / (DO NOT CARRY OUT INITIAL TEST)

On starting, the "handbrake" warning light does not come on (it should come on for 2 seconds to indicate the initial test of the control unit, and then go out)
The "low brake fluid" and "handbrake on" warning light, it also indicates an EBD function fault if it comes on at the same time as the ABS warning light
Results of the tests
1CHECK WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socketCheck that there is a regular dialogue with the ABS control unit Continue to Step 2 Lack of dialogue with the control unit

Restore:

  • the connection between the ABS control unit and the diagnostic connector
  • the ABS control unit supply
( See   E7020  ABS ).
An error is detected in the control unitContinue according to the instructions for the diagnostic equipment
2CHECKING CHECK CONTROL POWER SUPPLYAll OKProblems metOperation

Check, in order:

  • connection between ABs control unit and check control instrument.
  • supply to check control instrument
( See   E4022  CENTRE INSTRUMENT (CHECK) ).
Continue to Step 3 Connections not correctRestore the connections
Component defectiveReplace the component involved (if a fuse is involved, search for the cause of the problem)
3CHECK CONTROL CHECKAll OKProblems metOperation
Check the operation of the check control instrument see DESCRIPTION AND OPERATION: 5560 INSTRUMENT PANEL Continue to Step 4 Instrument not working Replace the check control instrument Op.   5560C60 
4CHECK CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosisFault persistsSearch for the fault starting from another symptom'