361979 - K109 ENGINE OIL PRESSURE FAULT DIAPLAY AT THE MATRIX

The engine oil pressure fault message is displayed at the matrix;
the engine oil pressure fault and engine oil pressure sensor fault messages are made available by the Engine Management Node at the C-CAN and via the Body Computer Node gateway to the B-CAN and consequently to the instrument panel node.
STEPOPERATIONS TO BE CARRIED OUTTEST RESULTS
0CHECK USING DIAGNOSTIC EQUIPMENT. ALL OKPROBLEMS ENCOUNTEREDACTION
Check that there is no engine oil pressure sensor fault message with the ignition on Move on to Step Fault messageMove on to Step
1CHECK USING DIAGNOSTIC EQUIPMENT. ALL OKPROBLEMS ENCOUNTEREDACTION
Connect the Examiner diagnostic equipment to the diagnostic connector check the following at the Engine Management Node: in errors ambient

  • that there are no faults.
Move on to Step Fault in the engine management control unitContinue following the instructions for the diagnostic equipment.
2CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Connect the Examiner diagnostic equipment to the diagnostic connector and check the following at the CAN:

  • no control unit not activated;
  • that there are no faulty control units;
  • no control unit with faulty CAN line;
Move on to Step Presence of faultsContinue following the instructions for the diagnostic equipment
3COMPONENT CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check that the sensor has an open circuit with the engine switched off and a short circuit to earth with the engine running Move on to Step Sensor faultyReplace the sensor     See in Op. 1084A42 Engine oil pressure warning light SWITCH - R.R.
4ELECTRICAL SYSTEM CHECKALL OKPROBLEMS ENCOUNTEREDACTION
2.4 20 V,2.0 TB,3.0 V6Check the continuity of the connections between the sensor and the engine management control unit (Wiring Diagram ) E5030 PETROL ENGINE ELECTRONIC MANAGEMENT Move on to Step Connection with open circuit or short circuitRestore the electrical connection (Wiring Diagram ) E5030 PETROL ENGINE ELECTRONIC MANAGEMENT
4ELECTRICAL SYSTEM CHECKALL OKPROBLEMS ENCOUNTEREDACTION
2.4 JTD 10VCheck the continuity of the connections between the sensor and the engine management control unit (Wiring Diagram ) E5050 DIESEL ENGINE ELECTRONIC MANAGEMENT Move on to Step Connection with open circuit or short circuitRestore the electrical connection (Wiring Diagram ) E5050 DIESEL ENGINE ELECTRONIC MANAGEMENT
5CHECK USING DIAGNOSTIC EQUIPMENT. ALL OKPROBLEMS ENCOUNTEREDACTION
2.4 20 V,2.0 TB,3.0 V6Connect the Examiner diagnostic equipment to the diagnostic connector check the following at the Engine Management Node: in parameters ambient

  • the plausibility of the engine oil pressure parameter
Move on to Step Parameter not plausibleReplace the engine management control unit    See in Op. 1056B82 Injection/ignition system CONTROL UNIT (one) - R.R.
5CHECK USING DIAGNOSTIC EQUIPMENT. ALL OKPROBLEMS ENCOUNTEREDACTION
2.4 JTD 10VConnect the Examiner diagnostic equipment to the diagnostic connector check the following at the Engine Management Node: in parameters ambient

  • the plausibility of the engine oil pressure parameter
Move on to Step Parameter not plausibleReplace the engine management control unit    See in Op. 1060G80 Diesel electronic injection system CONTROL UNIT - R.R.
6CHECK ON CORRECT OPERATIONALL OKPROBLEMS ENCOUNTEREDACTION
Check that the fault is no longer presentFault persistsReplace instrument panel    See in Op. 5560B11 ANALOGUE CONTROL PANEL - R.R. or Replace