194002067 - S003 ENGINE KNOCKING

The customer complains of: Irregular combustion noise, engine knock
Results of the tests
0PRELIMINARY CHECKSAll OKProblems encounteredOperation
Check that the engine oil level is correct    Op. 0010T11 ENGINE OIL - CHECK LEVEL AND TOP UP, IF NECESSARYCheck that the air intake/vacuum circuit is working properly by carrying out the    See Test 1048OA AIR INTAKE/VACUUM CIRCUIT CHECKCheck the condition of the fuel supply circuit and make sure that it is working properly carrying out the    See Test 1040OA FUEL SUPPLY CIRCUIT CHECKCheck the operation of the low pressure supply circuit by carrying out the    See Test 1060OB CHECK ON SUPPLY LOW PRESSURE FUEL CIRCUITMove on to Step 1Oil level incorrectRestore the correct engine oil level    Op. 0010T11 ENGINE OIL - CHECK LEVEL AND TOP UP, IF NECESSARY
1AMBIENT PARAMETERS CHECKAll OKProblems encounteredOperation
Select the following control unit at the diagnostic equipment: EDC16C39 Diesel electronic injection control unit.Check the value of the following parameters:. Battery voltage    See Test 5530BB BATTERY VOLTAGE CHECK. Atmospheric pressure    See Test 1060GD ATMOSPHERIC PRESSURE CHECK. Air temperature in the intake manifold    See Test 1064BD SUPERCHARGING TEMPERATURE CHECK. Supercharging pressure Objective. Supercharging pressure Measured    See Test 1060GF SUPERCHARGING PRESSURE CHECK. Measured air mass    See Test 1060GG MEASURED AIR MASS CHECK. Engine coolant temperature    See Test 1060OE CHECK ON OPERATION OF COOLANT TEMPERATURE SENSOR. Diesel temperature    See Test 1060EA DIESEL FUEL TEMPERATURE CHECK. Objective Diesel pressure. Measured Diesel pressure    See Test 1060GH DIESEL FUEL PRESSURE CHECK. Engine rpm    See Test 1060GI ENGINE SPEED CHECKMove on to Step 2
2PREHEATING RELAY ACTIVE DIAGNOSISAll OKProblems encounteredOperation
Carry out the active diagnosis for the preheating relay, checking that the result is positive.
The check on the following system is only necessary if the outside temperature is below 0 °C.
End of diagnosisThe result of the active diagnosis is negativeMove on to Step 3
3HEATER PLUGS CHECKAll OKProblems encounteredOperation
Check that the heater plugs are working properly    See Test 5520CA GLOW PLUGS FUNCTIONAL TESTEnd of diagnosis