312000633 - K047 MINIMUM ENGINE OIL PRESSURE WARNING LIGHT ON CONSTANTLY

The Engine Management Node sends a message via the C-CAN to the Body Computer, which makes it available via the B-CAN, to the Instrument Panel node.
Faults in the C-CAN will turn on the warning lights for the control units that communicate on this network. Verification of the CAN Information is intended to detect this situation
Test results
1PRELIMINARY CHECKSALL OKPROBLEMS ENCOUNTEREDACTION
Connect an Examiner and check on CAN Network Information for the absence of:

  • Inactive node/s
  • Node/s with error/s
  • Node/s with CAN network error/s
Move on to Step 61. Engine Control Node inactive and/or with error2. Fault on CAN network1. Continue as instructed by the diagnostic equipment2. Continue as instructed by the diagnostic equipment
2CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Use an Examiner to check the possibility of connection to the Body Computer Node, the lack of errors and the presenc of parametersMove on to Step 3Presence of errorsContinue as instructed by the diagnostic equipment
3ACTIVE DIAGNOSIS CHECKALL OKPROBLEMS ENCOUNTEREDACTION
With the Examiner in Instrument Panel Node mode, check that the minimum oil pressure warning light is correctly activated in Active Diagnosis.Move on to Step 41. The warning light does not flash1. Replace the Instrument Panel    Op. 5560B10 CONTROL PANEL - R+R
4OIL PRESSURE SENSOR CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check correct operation of the oil pressure sensorMove on to Step 51. Pressure sensor defective2. Oil circuit pressure not correct3. Sensor wiring defective1. Replace the pressure sensor    Op. 1084A42 ENGINE OIL PRESSURE WARNING LIGHT SWITCH - R + R 2. Restore the correct pressure3. Restore wiring
5CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Using an Examiner check, in Engine Control Node mode, that there are no errors and that the parameters are present.Move on to Step 6Fault persistsReplace the Engine Management Control unit (For the 1.3 Multijet version)    Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R For the 1.2 8V and 1.4 16V versions    Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R
6CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Check that the fault is no longer presentEnd of diagnosis