3360293 - K109 DISPLAYING ENGINE OIL PRESSURE FAULT ON MATRIX
An engine oil pressure fault message is shown on the matrix. engine oil pressure is normal. | The engine oil pressure fault and engine oil pressure sensor fault messages are made available on the C-CAN network by the Engine Control Node . They are also made available on the B-CAN network and hence the instrument panel node via a gateway. |
| Results of the tests | ||||
| 0 | PRELIMINARY CHECK | All OK | Problems met | Operation |
|---|---|---|---|---|
| With key on, check for an engine oil pressure sensor fault message. | Continue to Step 2 | Fault message present | Continue to Step 1 | |
| 1 | CHECK WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
Connect the Examiner and check the body computer node for:
| Continue to Step 2 | Fault present in the engine management control unit; | Continue as instructed by the tester | |
| 2 | CHECK WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
Connect the Examiner to the tester input and check CAN Network Information for:
| Continue to Step 3 | Presence of faults in the CAN network | Continue as instructed by the tester | |
| 3 | CHECKING SENSOR | All OK | Problems met | Operation |
| Check that the sensor is connected to earth with the engine running and in open circuit with the engine off | Continue to Step 4 | Sensor faulty | Replace sensor . | |
| 4 | CHECKING ELECTRICAL EQUIPMENT | All OK | Problems met | Operation |
| Check insulation of the connection between sensor and engine control unit | Continue to Step 5 | Connection short-circuited to earth | Restore electrical connection See E4010 INSTRUMENT PANEL | |
| 5 | CHECKING CORRECT OPERATION | All OK | Problems met | Operation |
| 1.2 16v 1.6 16v 1.8 16v 2.4 20v | Check plausibility of oil pressure parameter | Continue to Step 6 | Parameter not plausible | Replace the engine management control unit Op. 1056B82 Search for the fault starting from another symptom' |
| 1.9 JTD 8v | Check plausibility of oil pressure parameter | Continue to Step 6 | Parameter not plausible | Replace the engine management control unit Op. 1060G80 Search for the fault starting from another symptom' |
| 6 | CHECK CORRECT OPERATION | All OK | Problems met | Operation |
| Check that the fault is no longer present | End of diagnosis | Fault persists | Replace instrument panel Op. 5560B11Search for the fault starting from another symptom' | |