Page 311 of 431
13B-311V9 MR-372-J84-13B450$152.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR157FUEL FLOW SETPOINT
PARAMETER
DEFINITIONThis parameter indicates the fuel flow setpoint in mg/st.
NOTESSpecial notes:
Only perform these tests if the parameters do not correspond with the system
operation programming.
Conformity check with engine stopped and ignition on
Ignition on: 0.0 mg/st.
In the event of a fault, refer to the interpretation of fault DF643 Rail pressure regulator circuit.
Conformity check with engine running, engine coolant temperature > 80°C
Engine running: PR017: Fuel flow = PR157.
In the event of a fault, refer to the interpretation of fault DF643 Rail pressure regulator circuit.
EDC16C36_V44_PR157/EDC16C36_V4C_PR157/EDC16C36_V48_PR157/EDC16C36_V50_PR157/EDC16C36_V54_PR157/
EDC16C36_V58_PR157
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
Page 318 of 431
13B-318V9 MR-372-J84-13B450$152.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR364CYLINDER NO. 1 FUEL FLOW CORRECTION
PARAMETER
DEFINITIONThis parameter indicates the cylinder's fuel flow correction in mg/st.
NOTESSpecial notes:
Only perform these tests if the parameters do not correspond with the system
operation programming.
Conformity check with engine stopped and ignition on
PR364 = 0.0 mg/st.
In the event of a fault, consult test 10 Poor injector operation.
Conformity check with engine running, engine coolant temperature > 80°C
– 6 mg/st < PR364 < 6 mg/st.
In the event of a fault, consult test 10 Poor injector operation.
EDC16C36_V44_PR364/EDC16C36_V4C_PR364/EDC16C36_V48_PR364/EDC16C36_V50_PR364/EDC16C36_V54_PR364/
EDC16C36_V58_PR364
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
Page 319 of 431
13B-319V9 MR-372-J84-13B450$152.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR365CYLINDER NO. 4 FUEL FLOW CORRECTION
PARAMETER
DEFINITIONThis parameter indicates the cylinder's fuel flow correction in mg/st.
NOTESSpecial notes:
Only perform these tests if the parameters do not correspond with the system
operation programming.
Conformity check with engine stopped and ignition on
PR365 = 0.0 mg/st.
In the event of a fault, consult test 10 Poor injector operation.
Conformity check with engine running, engine coolant temperature > 80°C
– 6 mg/st < PR365 < 6 mg/st.
In the event of a fault, consult test 10 Poor injector operation.
EDC16C36_V44_PR365/EDC16C36_V4C_PR365/EDC16C36_V48_PR365/EDC16C36_V50_PR365/EDC16C36_V54_PR365/
EDC16C36_V58_PR365
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
Page 325 of 431
13B-325V9 MR-372-J84-13B450$152.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR405CYLINDER NO. 2 FUEL FLOW CORRECTION
PARAMETER
DEFINITIONThis parameter indicates the cylinder's fuel flow correction in mg/st.
NOTESSpecial notes:
Only perform these tests if the parameters do not correspond with the system
operation programming.
Conformity check with engine stopped and ignition on
PR405 = 0.0 mg/st.
In the event of a fault, consult test 10 Poor injector operation.
Conformity check with engine running, engine coolant temperature > 80°C
– 6 mg/st < PR405 < 6 mg/st.
In the event of a fault, consult test 10 Poor injector operation.
EDC16C36_V44_PR405/EDC16C36_V4C_PR405/EDC16C36_V48_PR405/EDC16C36_V50_PR405/EDC16C36_V54_PR405/
EDC16C36_V58_PR405
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
Page 326 of 431
13B-326V9 MR-372-J84-13B450$152.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR406CYLINDER NO. 3 FUEL FLOW CORRECTION
PARAMETER
DEFINITIONThis parameter indicates the cylinder's fuel flow correction in mg/st.
NOTESSpecial notes:
Only perform these tests if the parameters do not correspond with the system
operation programming.
Conformity check with engine stopped and ignition on
PR406 = 0.0 mg/st.
In the event of a fault, consult test 10 Poor injector operation.
Conformity check with engine running, engine coolant temperature > 80°C
– 6 mg/st < PR406 < 6 mg/st.
In the event of a fault, consult test 10 Poor injector operation.
EDC16C36_V44_PR406/EDC16C36_V4C_PR406/EDC16C36_V48_PR406/EDC16C36_V50_PR406/EDC16C36_V54_PR406/
EDC16C36_V58_PR406
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
Page 350 of 431

13B-350V9 MR-372-J84-13B450$160.mif
13B
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
Tool
commandDiagnostic tool title comments
SC001Write saved data See Interpretation of commands.
SC002Enter injector codes See Interpretation of commands.
SC003Save computer data See Interpretation of commands.
SC017Particle filter regeneration See Interpretation of commands.
SC031Operational fault finding of cylinders See Interpretation of commands.
SC035High pressure fuel circuit fault finding See Interpretation of commands.
SC036Reinitialise programming See Interpretation of commands.
RZ001Fault memory See Interpretation of commands.
RZ005Programming See Interpretation of commands.
RZ034Computer memory See Interpretation of commands.
LC009Air conditioning See configuration and programming.
LC056Heating elements See configuration and programming.
LC065Water in diesel fuel sensor See configuration and programming.
LC120Cruise control See configuration and programming.
LC121Speed limiter See configuration and programming.
AC004Turbocharging solenoid valve See Interpretation of commands.
AC011Rail pressure regulator See Interpretation of commands.
AC012Damper valve See Interpretation of commands.
AC037Preheating relay See Interpretation of commands.
AC038Low speed GMV relay See Interpretation of commands.
AC039High speed GMV relay See Interpretation of commands.
AC103EGR by-pass See Interpretation of commands.
AC231Richness ratio sensor heating See Interpretation of commands.
VP010Write VIN See Interpretation of commands.
VP036Fuel supply inhibited See
Interpretation of commands.
VP037Lift fuel supply inhibition See Interpretation of commands.
DIESEL INJECTION
Fault finding – Command summary table
Page 360 of 431

13B-360
AFTER REPAIRRepeat the conformity check in the interpretation of statuses and parameters
V9 MR-372-J84-13B450$170.mif
DIESEL INJECTION
Fault finding – Interpretation of commands13B
SC031
CONTINUED
If the result of scenario SC031 is not confirmed, check the engine compressions:
Use a compression gauge and run command VP036 Fuel supply inhibition (see Interpretation of commands).
Run compressions on all cylinders.
Are the compressions correct?
Check the cylinder block.Check the fitting of the injector and repair if necessary.
Otherwise change the injector concerned.
After replacing the injector, follow the injector code programming
procedure (see Replacement of components), run SC036
Reinitialise programming, and select the number of the injector
replaced.
IMPORTANT
When removing and refitting an injector, follow the cleanliness guidelines and safety advice (see MR 364
(Mégane II) or 370 (Scénic II), Mechanical, 13B, Diesel injection, Diesel injector: Removal - Refitting).
NOYES
EDC16 C36
Program No.: 91
Vdiag No.: 4C, 48, 50,
54, 58
Page 361 of 431

13B-361
AFTER REPAIRRepeat the conformity check in the interpretation of statuses and parameters
V9 MR-372-J84-13B450$170.mif
DIESEL INJECTION
Fault finding – Interpretation of commands13B
SC035HIGH PRESSURE FUEL CIRCUIT FAULT FINDING
NOTESThis command is used to interpret the state of the high pressure fuel circuit (high
pressure pump, rail, injectors and high pressure supply pipes).
To run this command, select scenario SC035 on the diagnostic tool.
Procedure to be followed:
– select scenario SC035 High pressure fuel circuit fault finding,
– follow the instructions then “confirm”,
– with the command in progress: do not operate on the vehicle,
– switch off the engine at the end of the test,
– the tool displays the results,
– end of test.
Interpretation of correct results:
– If the results displayed are OK, the entire high pressure fuel circuit is in order. There is no need for any operation.
Stage X
(X is the variable from 1 to 4)Rising time
Rail pressureDrop off time
Rail pressureInterpretation of results
Stage X OK OK No operation
Stage 5 OK No operation
Interpretation of incorrect results:
– Is one of the value definitions for the various displayed stages is “TOO SLOW” or “TOO FAST”, see the
following table:
Stage X
(X is the variable from 1 to 4)Rising time
Rail pressureDrop off time
Rail pressureInterpretation of results
Stage X TOO SLOW TOO SLOW Check 1
Stage X TOO SLOW TOO FAST Check 2
Stage X TOO SLOW OK Check 3
Stage X OK TOO SLOW Check 4
Stage X OK TOO FAST Check 5
Stage 5 TOO FAST Check 5
EDC16C36_V4C_SC035/EDC16C36_V48_SC035/EDC16C36_V50_SC035/EDC16C36_V54_SC035/EDC16C36_V58_SC035 EDC16 C36
Program No.: 91
Vdiag No.: 4C, 48, 50,
54, 58