125000520 - F33

When the ASR is switched on the ''ASR on'' message is not shown on the display for 5 seconds; the LED in the button remains on (indicating that it is switched off).
Results of the tests
1CHECK WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation

Connect the Examiner Plus or Smart diagnostic equipment to the diagnostic connector and check the following at the brake nodes:

  • For faults in error mode;
  • In the parameters ambient, the plausibility of all the parameters
Continue to Step 2An error is detected in the control unitContinue following the instructions for the diagnostic equipment
2SWITCH CHECKAll OKProblems metOperation
Check the operation of the ASR switch checking that there is a short circuit with the button pressed and an open circuit with the button released See    See E7022 VDCContinue to Step 3Faulty switchReplace switch Op.    Op. 3350A10 ASR DISENGAGEMENT SWITCH - R R
3CHECKING ELECTRICAL EQUIPMENTAll OKProblems metOperation
Check the continuity/insulation of the ASR switch connectionsSee    See E7022 VDCContinue to Step 4No continuity/insulationRestore the correct connections See    See E7022 VDC
4CHECK ON CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosis.