2011 RENAULT SCENIC Rail pressure regulator

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

13B-362
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
SC035
CONTINUED
Explanation of results interpretation:
Check 1:
– Use scenario SC031: Operational fault finding of cylinders.
–For VDiag 44, run Test 10 Poor injector operation.
–Apply ALP6 Fuel circuit external leaks.
–Run Test 3 Low pressure circuit check.
– Replace the high pressure pump.
Check 2:
– Use scenario SC031: Operational fault finding of cylinders.
–For VDiag 44, run Test 10 Poor injector operation.
–Apply ALP6 Fuel circuit external leaks.
– Run the part of Test 3 Low pressure circuit check which concerns the fuel filter.
– Replace the high pressure pump.
– Check the injector return flow and the injectors, run Test 10 Poor injector operation.
– Check the rail pressure regulator by running command AC011 “Rail pressure regulator”.
Check 3:
– Use scenario SC031: Operational fault finding of cylinders.
–For VDiag 44, run Test 10 Poor injector operation.
–Apply ALP6 Fuel circuit external leaks.
–Run Test 3 Low pressure circuit check.
– Replace the high pressure pump.
Check 4:
Replace the high pressure pump.
Check 5:
– Check the injector return flow and the injectors (run Test 10 Poor injector operation).
– Check the rail pressure regulator by running command AC011 “Rail pressure regulator”.
Consult the repair manual for the various checks (from 1 to 5), see MR 364 (Mégane II ph2), MR 370 (Scénic II
ph2), Mechanical, 13B, Diesel injection, Injector rail, Removal - Refitting.
Repair if necessary.
EDC16 C36
Program No.: 91
Vdiag No.: 4C, 48, 50,
54, 58

13B-369
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
AC011RAIL PRESSURE REGULATOR
NOTESPerform this fault finding procedure:
– following interpretation of an unresolved fault
– following an inconsistency recorded in the parameters,
– following a customer complaint (starting problems, engine speed instability, injection
noise).
Ignition on and engine stopped.
Use Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2.
Step 1
Check the continuity and absence of interference resistance on the following connections:
– Connection code 3HI between components 1105 and 120.
– Connection code 3FB between components 1105 and 983.
Run command AC011. If there is a slight whistling noise and clicking from the pressure regulator, go to step 2,
otherwise, check that the computer output stage is operating correctly:
Vehicle under + after ignition feed, clear the faults displayed by the diagnostic tool.
With the voltmeter in the direct current position:
With the pressure regulator connected, connect the voltmeter earth lead to connection 3HI of component 1105
and the positive lead to connection 3FB.
Run command AC011; the voltmeter should display four successive voltages of 2.2 V ± 0.2 V.
If the measurement is not correct, contact the Techline.
STEP 2
EDC16C36_V44_AC011/EDC16C36_V4C_AC011/EDC16C36_V48_AC011/EDC16C36_V50_AC011/EDC16C36_V54_AC011/
EDC16C36_V58_AC011EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58

13B-370
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
AC011
CONTINUED
Step 2
In the event of rail overpressure:
Check that there are no air bubbles in the diesel fuel low pressure circuit.
Check that the rail pressure sensor is operating correctly.
Consult the interpretation of parameter PR038 Rail pressure.
If these checks reveal no irregularities, replace the regulator.
in the event of rail underpressure:
Check that the rail pressure sensor is operating correctly.
Consult the interpretation of parameter PR038 Rail pressure.
Check the low pressure diesel circuit priming.
Check the conformity of the diesel filter connections.
Check the condition of the filter (clogging and water saturation).
Check that there are no air bubbles between the filter and the high pressure pump.
Check the sealing of the low and high pressure diesel fuel systems: use ALP6 Fuel circuit leaks (visual
inspections, touch tests, odours, etc.) on:
pump body, pressure release valve, pipes, rail and injectors unions, injector wells, etc.
Check the conformity of the seal fitting on the pressure regulator.
Check the operation of the injectors, run Test 10 Poor injector operation.
Carry out the necessary repairs.
If the engine starts:
Clear any faults.
Check the pressure regulator by applying (see ALP7 Rough idle).
With the engine warm, leave it to idle for a few minutes (3 to 5 minutes):
– If it stalls and the fault reappears, replace the regulator.
– If it does not stall, stabilise the engine speed at 2000 rpm(1 minute) then accelerate at full load until it cuts out.
If the engine stalls, contact the Techline
If the engine does not startor there is no timing:
first, replace the regulator and if the fault is still present, contact the Techline.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58

13B-384
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
V9 MR-372-J84-13B450$190.mif
DIESEL INJECTION
Fault finding – Fault Finding Chart13B
ALP2
CONTINUED 1
Test the high pressure fuel circuit:
Run the scenario SC035 High pressure fuel circuit fault finding (see Interpretation of commands).
Check that the heater plugs are actuated using the AC037 Preheating relay command.
Check the tightness and the condition of the inlet circuit: run test 4: Turbocharged air inlet circuit check and
follow the procedure.
Check that the exhaust is not blocked, run test 1 Exhaust system check and follow the procedure.
Check the consistency of the signal from the engine coolant temperature sensor.
Check the operation of the rail pressure regulator (DRV) using command AC011 Rail pressure regulator.
Check the timing setting.
End of part A
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58

13B-387
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
V9 MR-372-J84-13B450$190.mif
DIESEL INJECTION
Fault finding – Fault Finding Chart13B
ALP4
CONTINUED
is the engine running on all cylinders?
Check the operation of the injectors, run test 10 Poor injector operation.
If the fault is still present
Check the conformity of the accelerator pedal position sensor, the brake pedal sensor, the atmospheric pressure
sensor, the exhaust gas recirculation valve, and the damper valve (see Interpretation of statuses and
Interpretation of parameters).
Check the consistency of the signal for the air flowmeter, the engine coolant temperature sensor, the fuel
temperature sensor and the engine speed.
Check the connectors, the continuity, and the absence of interference resistance of the air flowmeter (apply DF056
Air flow sensor circuit), the engine coolant temperature sensor (apply DF001 Coolant temperature circuit), the
fuel temperature sensor (apply DF098 Fuel temperature sensor circuit), and the engine speed (apply DF195
Camshaft sensor - engine speed consistency).
Check:
– That the diesel filter is not clogged.
– That there are no leaks on the high and low pressure diesel circuits: run test 3 Low pressure circuit check.
– The connection of the oil vapour rebreathing circuit.
– The rail pressure regulator (MPROP) (jammed - stuck), apply the interpretation of command AC011 Rail
pressure regulator.
Check the engine timing (and the position of the high pressure pump sprocket). See the procedure in the
Workshop Repair Manual if necessary.
Test the high pressure fuel circuit:
Run the scenario SC035 High pressure fuel circuit fault finding (see Interpretation of commands).
If the fault is still present, contact the techline.
A
NO
YES
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58

13B-430V9 MR-372-J84-13B450$210.mif
13B
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
Injection computer128-track (BOSCH)
Connectors: black A 32-track, brown B 48-track, grey C 48-track
Atmospheric pressure sensorIntegrated into the computer (BOSCH)
Injector0.25 Ω at +20°C / 2 Ω max (BOSCH)
1600 bar (1800 bar max.)
Flow regulator (high pressure
pump)R = 3 ± 0.1 Ω at +20°C (BOSCH, CP3.2+ pump)
Rail pressure sensorRail pressure limiter: opening at around 1800 bar (BOSCH, bolted on rail)
Engine speed sensor R = 235 ± 35 Ω at + 23°C (MGI)
Camshaft sensorHall effect sensor (ELECTRICFIL)
R = 10250 ± 500 Ω at +20°C (measured between connections 3CQ and
3FB1 of the sensor)
Turbocharger control solenoid
valve15.4 ± 0.7 Ω at +20°C (PIERBURG)
Electric EGR valveConnection code 3VP: +12 V electric motor
Connection code 3GC: +5 V potentiometer
Connection code 3JM: potentiometer earth
Connection code 3VQ: motor earth
Connection code 3EL: potentiometer signal
DIRECT CURRENT MOTOR: R between connections 3VP and 3VQ = 1
Ω τo 400 Ω at +20°C
POTENTIOMETER: R between connections 3GC and 3JM: 3.9 kΩ < X <
9.1 kΩ at +20°C
(SIEMENS)
EGR by-pass solenoid valve 46 ± 3 W at +25°C (PIERBURG)
Electric damper valveDIRECT CURRENT MOTOR (VDO type)
Air flow sensorConnection code 3ABQ: air temperature signal
Connection code
3DW: flowmeter earth
Connection code 3KJ: +5 V flowmeter
Connection code 3FB2: +12 V battery
Connection code 3DV: air flow signal
Connection code 3DU: battery earth
(SIEMENS)
DIESEL INJECTION
Fault finding – Glossary