22 · Diagnostics

Low engine oil pressure

Fault diagnosisLow engine oil pressure

LOW ENGINE OIL PRESSURE

The warning light indicates a decrease in pressure in the engine lubrication circuit.

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	Check that the engine oil level is correct Op. 0010T11	Continue to Step 1	Low oil level	Restore the correct level Op. 0010T11
1	CHECKING LUBRICATION SYSTEM PRESSURE	All OK	Problems met	Operation
	Check the pressure of the lubrication system Op. 0510C20	Continue to Step 2	Low engine oil pressure	Oil pump check
2	CHECK ON OIL PRESSURE INDICATION ELECTRICAL CIRCUIT	All OK	Problems met	Operation
	See table K30 MINIMUM ENGINE OIL PRESSURE WARNING LIGHT NOT WORKING	End of diagnosis	Fault persists

The warning light indicates a decrease in pressure in the engine lubrication circuit.

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	Verify: that the engine oil level is correct that there are no leaks from the lubrication circuit	Continue to Step 1	Low oil level	Restore the correct level
		Continue to Step 1	Leaks detected	Eliminate the leaks
1	CHECKING LUBRICATION SYSTEM PRESSURE	All OK	Problems met	Operation
	Check that the lubrication system pressure is correct Op. 0510C20	Continue to Step 4	Low engine oil pressure	Continue to Step 2
2	CHECKING LUBRICATION SYSTEM	All OK	Problems met	Operation
	Check that the engine oil pump is working properly Op. 1084B18	Continue to Step 3	Oil pump faulty	Replace the oil pump Op. 1084B10
3	CHECKING LUBRICATION SYSTEM	All OK	Problems met	Operation
	Verify: seal of crankshaft channel plugs play on main journal/big end bearings	Continue to Step 4	Plugs faulty	Replace the plugs Op. 1024A20
		Continue to Step 4	Excessive play	Restore the correct play
4	CHECKING CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis	Fault persists	Continue according to the instructions for the See table K109 DISPLAYING ENGINE OIL PRESSURE FAULT ON MATRIX

The warning light indicates a decrease in pressure in the engine lubrication circuit.

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	Verify: that the engine oil level is correct that there are no leaks from the lubrication circuit	Continue to Step 1	Low oil level	Restore the correct level
		Continue to Step 1	Leaks detected	Eliminate the leaks
1	CHECKING LUBRICATION SYSTEM PRESSURE	All OK	Problems met	Operation
	Check that the lubrication system pressure is correct Op. 0510C20	Continue to Step 4	Low engine oil pressure	Continue to Step 2
2	CHECKING LUBRICATION SYSTEM	All OK	Problems met	Operation
	Check that the engine oil pump is working properly Op. 1084B18	Continue to Step 3	Oil pump faulty	Replace the oil pump Op. 1084B10
3	CHECKING LUBRICATION SYSTEM	All OK	Problems met	Operation
	Verify: seal of crankshaft channel plugs play on main journal/big end bearings	Continue to Step 4	Plugs faulty	Replace the plugsOp. 1024A20
		Continue to Step 4	Excessive play	Restore the correct play
4	CHECKING CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis	Fault persists	Continue according to the instructions for the See table K109 DISPLAYING ENGINE OIL PRESSURE FAULT ON MATRIX

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