2398838 - K68 CONTROL PANEL ESP WARNING LIGHT ON

The brakes node sends the ABS warning light on message via the C-CAN network to the body computer which, through the gateway, makes it available via the B-CAN network to the instrument panel node.
If there are faults at the C-CAN, the control unit failure warning lights will light up. The CAN INFORMATION check is designed precisely for this purpose
Results of the tests
0PRELIMINARY CHECKSAll OKProblems metOperation

Connect the EXAMINER diagnostic equipment and check the CAN NETWORK INFORMATION:

  • For inactive control units
  • For control units with errors
  • For control units with CAN errors
Continue to Step 1Presence of faults in the CAN Continue as instructed by the tester
Impossible to converse with the Body ComputerContinue to Step 7
1CHECKING WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation

Keep the tester connected and check the BRAKE NODE for:

  • System/component faults
  • CAN faults
Continue to Step 2System/component faultsContinue as instructed by the tester
Presence of C-CAN faults Continue to Step 9
2CHECKING WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
Using the Examiner check, in the Instrument Panel Node ambient, that there are no errors and the following parameters are present. Continue to Step 3There are errorsContinue in accordance with the instructions for the diagnostic equipment
3ELECTRICAL POWER SUPPLY CHECKAll OKProblems metOperation
Check that the Instrument Panel Node electrical power supply is correct.Continue to Step 4Positive and/or earth electrical power supply fault. Replace the defective component (if a fuse is involved, search for the cause of the problem).
4CHECK ELECTRICAL CONNECTIONSAll OKProblems metOperation
Check the electrical connections between the Body Computer and the Instrument Panel, in particular that each individual pin is correctly connected. Continue to Step 5Electrical connections not working.Restore damaged electrical connection.
5CHECK WITH ACTIVE DIAGNOSISAll OKProblems metOperation
With the Examiner in the Instrument Panel Node ambient, check, in active diagnosis, that the ESP warning light is correctly activated Continue to Step 6The ESP light does not flash Replace the instrument panel Op. 5560B11
6CHECKING WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
Using the Examiner, check, in the Body Computer Node ambient, that there are no errors and that the specific parameter varies. Continue to Step 9Impossible to connect with the Body Computer control unit.Continue to Step 7
There are errors Continue in accordance with the instructions for the diagnostic equipment.
The parameter values do not changeContinue to Step 9
7ELECTRICAL POWER SUPPLY CHECKAll OKProblems metOperation
Check that the Body Computer Node electrical power supply is correct. Continue to Step 8Positive and/or earth electrical power supply fault. Replace the defective component (if a fuse is involved, search for the cause of the problem).
8CHECKING WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
Using the Examiner, check the possibility of connecting with the Body Computer Node. Continue to Step 6Impossible to connect with the Body Computer control unit.Replace the Body Computer Op.   5505A32 
9CHECK ON CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosisThe fault persistsReplace the Body Computer Op.   5505A32