194002487 - K068 ESP WARNING LIGHT ON

N.B.: The brake node sends the ABS warning light on message via the C-CAN to the Body Computer which makes it available via the gateway to the Instrument Panel Node through the B-CAN.
In the event of faults in the C-CAN network, the fault warning lights for the control units that communicate via this network will light up. The CAN NETWORK INFORMATION check is intended to test for this problem.
0PRELIMINARY CHECKSALL OKPROBLEMS ENCOUNTEREDACTION
Connect the EXAMINER diagnostic tester and check on CAN NETWORK INFORMATION:

  • No control units inactive

  • No faulty control units

  • No control units with faulty CAN line;
Move on to Step 11. Fault on CAN network1. Continue following the instructions for the diagnostic equipment
2. Impossible to communicate with the Body Computer2. Move on to Step 7
1CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Keeping the diagnostic tester connected, check on the BRAKE NODE:

  • No system/component errors

  • No CAN faults
Move on to Step 21. System/components faulty1. Continue following the instructions for the diagnostic equipment
2. Fault on C-CAN network2. Move on to Step 7
2CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Using the Examiner diagnostic equipment in Instrument Panel Node mode, check that there are no errors and that the parameters are present.Move on to Step 3Presence of errorsContinue following the instructions on the diagnostic tester
3ELECTRICAL POWER SUPPLY CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the Instrument panel node electrical supply is correct.Move on to Step 4Fault in electrical supply positive and/or earth.Replace defective component (in the case of a fuse, find out what caused it to blow).
4CHECK ELECTRICAL CONNECTIONSALL OKPROBLEMS ENCOUNTEREDACTION
Check the electrical connections between the Body Computer and Instrument Panel, in particular that each individual pin is correctly connected.Move on to Step 5Electrical connections not operational.Renew the damaged electrical connections
5ACTIVE DIAGNOSIS CHECKALL OKPROBLEMS ENCOUNTEREDACTION
With the Examiner in Instrument Panel Node mode check that the ESP activation warning light is correctly activated in Active Diagnosis.Move on to Step 6The ESP warning light does not flashReplace the instrument panel    Op. 5560B10 CONTROL PANEL - R+R
6CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Using the Examiner diagnostic equipment in Body Computer Node mode that there are no errors and that the parameters are present.Move on to Step 91. Impossible to connect to the Body Computer control unit.1. Move on to Step 7
2. Presence of errors.2. Continue following the instructions on the diagnostic tester
3. The parameter values do not change3. Move on to Step 8
7ELECTRICAL POWER SUPPLY CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the Body Computer Node electrical supply is correct.Move on to Step 8Fault in electrical supply positive and/or earth.Replace defective component (in the case of a fuse, find out what caused it to blow).
8CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Use the Examiner to check the possibility of connection to the Body Computer Node.Move on to Step 9Impossible to connect to the Body Computer control unit.Replace Body Computer    Op. 5505A35 MAIN BODY COMPUTER/JUNCTION UNIT - R.R.
9CHECK ON CORRECT OPERATIONALL OKPROBLEMS ENCOUNTEREDACTION
Check that the fault is no longer presentEnd of diagnosis