2011 RENAULT SCENIC rail pressure regulation

13B-17V9 MR-372-J84-13B450$050.mif
DIESEL INJECTION
Fault finding – Features13B
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
a. The computer:
Determines the value of injection pressure necessary for the engine to operate correctly and then controls the
pressure regulator.
Checks that the pressure value is correct by analysing the value transmitted by the pressure sensor located on the
rail.
It determines the injection timing required to deliver the right quantity of diesel fuel and the moment when injection
should start. Controls each injector electrically and individually after determining these two values.
The flow injected into the engine is determined by:
– the duration of injector control,
– the rail pressure (regulated by the computer),
– the injector opening and closing speed,
– the needle stroke (determined by a constant for the type of injector),
– the nominal hydraulic flow of the injector (specific to each injector).
The computer manages:
– idling regulation,
– exhaust gas flow reinjection to the inlet (EGR),
– fuel supply check (advance, flow and rail pressure),
– the fan assembly control,
– the air conditioning (cold loop function),
– the cruise control/speed limiter function,
– pre-post heating control,
– indicator lights control via the multiplex network,
– the catalysed particle filter operation (F9Q816 engine only).

13B-35V9 MR-372-J84-13B450$090.mif
DIESEL INJECTION
Fault finding – Fault summary table13B
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
Management of instrument panel warning lights according to the faults notified.
FaultDTC code in
hexadecimalLevel 1 fault
warning light
(orange
SERVICE
warning light)Level 2 fault
warning light
(red STOP
warning light)No fault
warning
light litOBD
warning
light lit
DF032 Thermoplunger 1 relay
control circuit1641 - - CC.1/1.DEF -
DF033 Thermoplunger 2 relay
control circuit1642 - - CC.1/1.DEF -
DF034 Thermoplunger 3 relay
control circuit1643 - - CC.1/1.DEF -
DF038 Computer 606 1.DEF/ 3.DEF 1.DEF/2.DEF 1.DEF -
DF046 Battery voltage 560 - -1.DEF/
2.DEF/
3.DEF
DF047 Computer feed voltage 2505 - - 1.DEF -
DF051 Cruise control/speed
limiter function575 - - 1.DEF -
DF053 Rail pressure
regulation function89 3.DEF/2.DEF1.DEF/4.DEF/
3.DEF--
DF054Turbocharging
solenoid valve control circuit45CC.1/CC.0/
CO/ 1.DEF--CC.1/
CC.0/CO/
1.DEF
D F055 Turbocharging
pressure regulation circuit2263 1.DEF/2.DEF - -1.DEF/
2.DEF
DF056 Air flow sensor circuit 100CO.0/CC.1/
1.DEF--CO.0/
CC.1/
1.DEF
DF059 Misfiring on cylinder 1 301 - - 1.DEF -

13B-38V9 MR-372-J84-13B450$090.mif
DIESEL INJECTION
Fault finding – Fault summary table13B
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
Management of instrument panel warning lights according to the faults notified.
*diff: differentialFaultDTC code in
hexadecimalLevel 1 fault
warning light
(orange
SERVICE
warning light)Level 2 fault
warning light
(red STOP
warning light)No fault
warning
light litOBD
warning
light lit
DF312 Speed request 1436 - - X -
DF315 Particle filter diff*
pressure sensor2452 CO/CO.0CC.1/ - -CO/CO.0/
CC.1
DF316 Particle filter diff*
pressure2453 1.DEF/2.DEF - -1.DEF/
2.DEF
DF502 Cruise control or
speed limiter button565 - - 1.DEF -
DF530 EGR adaptives 404 - - 1.DEF -
DF643 Rail pressure regulator
circuit90 -CO/ CC.0/
CC.1/1.DEF--
DF647 EGR valve position
regulation4881.DEF/2.DEF/
3.DEF-4.DEF/
5.DEF1.DEF/
2.DEF
3.DEF/
4.DEF /
5.DEF
DF652 Turbine upstream
temperature sensor circuit544 CC.0/CO.1 - -
DF778 Turbine upstream
temperature control 2080 1.DEF

13B-86V9 MR-372-J84-13B450$102.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DF053
PRESENT
OR
STOREDRAIL PRESSURE REGULATION FUNCTION1.DEF: Above maximum threshold.
2.DEF: Negative loop deviation.
3.DEF: Positive loop deviation.
4.DEF: Below minimum threshold.
NOTESOrder of priority for a combination of faults:
Deal with fault DF643 Rail pressure regulator circuit first if it is present or stored.
Conditions for applying the fault finding procedure to a stored fault:
The fault is declared present after:
– the engine is started,
– a road test.
Special notes:
If the fault is present:
– engine torque limited for 2.DEF/3.DEF,
–the level 1 warning light comes on for 2DEF/3.DEF.
–the level 2 warning light comes on for 1.DEF/3.DEF/4.DEF,
– engine stops for 1.DEF/3.DEF/4.DEF.
Use bornier Elé.1681 for any operations on the injection computer connectors.
Use Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2.
EDC16C36_V44_DF053/EDC16C36_V4C_DF053/EDC16C36_V48_DF053/EDC16C36_V50_DF053/EDC16C36_V54_DF053/
EDC16C36_V58_DF053
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition until the end of the power-latch phase, and carry out a road test
followed by a check using the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58

13B-259V9 MR-372-J84-13B450$140.mif
13B
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
* OCR: Opening cycle ratioTool parameter Diagnostic tool title
PR002Alternator charge
PR005EGR valve opening setpoint
PR006Rail pressure regulator current
PR007Rail pressure regulator current setpoint
PR008Rail reference pressure
PR009Turbocharging pressure setpoint
PR015Engine torque
PR017Fuel flow
PR022EGR valve position feedback loop difference
PR025Mileage
PR030Accelerator pedal position
PR035Atmospheric pressure
PR037Refrigerant pressure
PR038Rail pressure
PR041Turbocharging pressure
PR045Power requested by heating elements
PR047Turbocharging pressure OCR*
PR048OCR* Rail pressure regulation valve
PR051EGR valve position feedback
PR053Engine speed requested by air conditioning
PR054Engine speed requested by heating elements
PR055Engine speed
PR058Air temperature
PR063Fuel temperature
PR064Coolant temperature
PR066Oil temperature
PR071Computer feed voltage
PR073Air flowmeter supply voltage
DIESEL INJECTION
Fault finding – Parameter summary table

13B-281
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V9 MR-372-J84-13B450$151.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
* OCR: opening cycle ratio
PR048RAIL PRESSURE REGULATION VALVE OCR*
PARAMETER
DEFINITIONThis parameter indicates the turbocharger pressure opening cyclic ratio in %.
NOTESSpecial notes:
Only perform these tests if the parameters do not correspond with the system
operation programming.
Engine running, engine coolant temperature > 80°C
The value must be between 35 < PR048 < 45%
In the event of a fault, consult the interpretation of fault DF007 Rail pressure sensor circuit.
Engine stopped, ignition on
The value should be: PR048 = 15%
In the event of a fault, consult the interpretation of faults DF007 Rail pressure sensor circuit and DF053 Rail
pressure regulation function.
EDC16C36_V44_PR048/EDC16C36_V4C_PR048/EDC16C36_V48_PR048/EDC16C36_V50_PR048/EDC16C36_V54_PR048/
EDC16C36_V58_PR048EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58