fuel pressure RENAULT SCENIC 2009 J84 / 2.G Engine And Peripherals EDC16 User Guide

DIESEL INJECTION
Fault finding – Interpretation of faults13B
13B-81V3 MR-372-J84-13B250$360.mif
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16
PROGRAM No.: C1
Vdiag No.: 51
*Opening cyclic ratioDF053
CONTINUED 3
●Or usingavoltmeter:
With the regulator connected, connect the negative terminal of the voltmeter totrack 2of the rail pressure regulator
and thepositive terminal totrack 1.Clear any fuel pressure solenoid valve faults, then run commandAC011 Rail
pressure re gulator:
Thevoltmeter should display two successive voltage readings:
~3.15voltsfor an opening cycle ratio of 25% then~9.45Vfor an opening cycle ratio of 75% (ten cycles).
●Or using an oscillos cope(at 5 V range/division a nd 1 ms/div tim e base):
With the regulator connected, connect the negative terminal of the oscill oscope to the battery earth and the positive
terminal totrack 2of the fuel pressure solenoid valve, clear any r ail pressure regulator faults, and r un command
AC0 11 R ail pressure regulator:
theoscillo sco pe sh ould disp lay a square pulse signal with an a mplitude o f 1 2.5 V at a frequency of 1 85 Hz (with a n
OCR* alternating successively from 25 to 75%).
if the measurement does not show any control or continuous voltage, contact the techline.

DIESEL INJECTION
Fault finding – Interpretation of faults13B
13B-82V3 MR-372-J84-13B250$360.mif
DF053
CONTINUED 4
2.DEF to
8.DEF
NOTESNone
Check the rail pressure regulator connectors.
Check the injection computer connections.
Check the low pressure circuit by running test 2 Low pressure circuit check.
Check the conformity of the fuel used by applying test 10 Diesel fuel conformity check.
Check the injector return flow, run test 8 Poor injector operation.
Check the operation of the overpressure valve if fitted to the vehicle, run test 11 Incorrect operation of the
overpressure valve.
Repair if necessary.
Measure the resistance of the pressure regulator between its tracks 1 and 2.
If the resistance is not 3 ± 1 Ω at 20˚C, replace the injection pump.
Check the continuity and for the absence of interference resistance on the following connections:
Injection computer brown 48-track
connector B, track M4Track 2 of the rail pressure regulator
Injection supply relay mounting track 5 track 1 of the rail pressure regulator
Repair if necessary.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16
PROGRAM No.: C1
Vdiag No.: 51

DIESEL INJECTION
Fault finding – Interpretation of faults13B
13B-83V3 MR-372-J84-13B250$360.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
DF053
CONTINUED 5
In the event of rail overpressure:
Check the operation of the injectors: refer to test 8 Poor injector operation.
Check that the rail pressure sensor is operating correctly using command AC011 Rail pressure regulator. Display
parameter PR038 Rail pressure, and refer to the conformity check to check the operating values.
If these checks do not reveal any faults, and if the fault is still present, replace the injection pump.
in the event of rail underpressure:
Check that the rail pressure sensor is operating correctly using command AC011 Rail pressure regulator. Display
parameter PR038 Rail pressure, and refer to the conformity check to check the operating values.
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 low and high pressure diesel fuel circuit sealing (visual inspections, odour, etc.): pump housing,
pressure relief valve, pipes, rail and injector unions, injector wells, etc.
Check the operation of the injectors: refer to test 8 Poor injector operation.
Carry out the necessary operations.
If the fault is still present, replace the injection pump.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.

DIESEL INJECTION
Fault finding – Interpretation of faults13B
13B-94V3 MR-372-J84-13B250$405.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
DF057
PRESENT
OR
STOREDWATER IN DIESEL FUEL DETECTOR CIRCUIT
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present after the engine is started or following a road test.
Check the conformity of the fuel used by applying test 10 Diesel fuel conformity check.
Check the sealing of the tank and low pressure circuit by applying test 2 Low pressure circuit check.
A) Make sure the water in diesel fuel detection sensor is properly connected.
–If not, clear the fault,
–Carry out a road test (speed > 12 mph (20 km/h) and engine speed > 1200 rpm) for more than 30 seconds.
–If the fault does not recur, end the fault finding procedure.
–If the fault does recur, go to step C.
B) If the water detection sensor is absent:
–Insulate the electrical connector not connected to the vehicle (risk of dampness, oxidation, and erratic
appearance of faults).
Check that the configuration reading LC065 Water detected in the diesel is NONE.
If LC065 is WITH, run command RZ005 Programming to reinitialise the vehicle configurations.
–Clear the faults.
–Carry out a road test (speed > 12 mph (20 km/h) and engine speed > 1200 rpm) for more than 30 seconds.
–If the fault does not recur, end the fault finding procedure.
C) If the sensor is properly connected:
–Bleed the diesel filter unit (see MR 364, Mechanics, 13A, Fuel supply).
–Clear the fault.
–Carry out a road test (speed > 12 mph (20 km/h) and engine speed > 1200 rpm) for more than 30 seconds.
–If the fault does not recur, end the fault finding procedure.
D) If the fault recurs:
–Check for continuity and the absence of interference resistance on the connection between:
Injection computer 32-track grey connector track A2 Track 3 of the water detection sensor
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V51_DF057

DIESEL INJECTION
Fault finding – Conformity check13B
13B - 137V3 MR-372-J84-13B250$450.mif
EDC16
PROGRAM NO.: C1
Vdiag No.: 51
FUEL CIRCUIT
*Opening cyclic ratio signal
NOTESOnly check conformity after a complete check using the diagnostic tool. The values
shown in this conformity check are given as a guide.
Test conditions: ENGINE OFF, IGNITION ON.
Order FunctionParameter or Status
checked or ActionDisplay and Notes Fault finding
1Engine speedPR055:Engine speedIndicates the engine's
rotational speed in rpm.
With the ignition on,
0 rpm.In the event of a fault, refer
to the interpretation for
fault DF005 Engine
speed sensor circuit.
2Injector codesET104:Injector code
useYES
Indicates whether the
injector codes have been
programmedIn the event of a fault,
consult the interpretation
of DF276 Injector code
programming.
3PressurePR008:Rail pressure
setpointIndicates the theoretical
pressure value for
optimum engine operation
X = 250 ± 50 barIn the event of a fault, refer
to the interpretation of
faults DF053 Rail
pressure regulation
function and DF007 Rail
pressure sensor circuit. PR038:Rail pressure0 < X < 10 bar
Default value: 250 bar.
PR048:OCR* rail
pressure
regulation valveX = 15 %
PR213:Rail pressure
loop differenceX = PR008 - PR038The fuel pressure
variation is the difference
between the rail pressure
and the rail pressure
setpoint. In the event of a
fault, consult the
interpretation of faults
DF007 Rail pressure
sensor circuit and
DF053 Rail pressure
regulation function.

DIESEL INJECTION
Fault finding – Conformity check13B
13B - 138V3 MR-372-J84-13B250$450.mif
EDC16
PROGRAM NO.: C1
Vdiag No.: 51
FUEL CIRCUIT (continued)
NOTESOnly check conformity after a complete check using the diagnostic tool. The values
shown in this conformity check are given as a guide.
Test conditions: ENGINE OFF, IGNITION ON.
Order FunctionParameter or Status
checked or ActionDisplay and Notes Fault finding
4FlowPR157:Fuel flow setpoint0 < X < 60 mg/stNone
PR017:Fuel flowPR017 = PR157None
PR364:Cylinder no. 1
fuel flow
correction
0.0 mg/stIn the event of a fault, refer
to test 8: POOR
INJECTOR OPERATION. PR405:Cylinder no. 2
fuel flow
correction
PR406:Cylinder no. 3
fuel flow
correction
PR365:Cylinder no. 4
fuel flow
correction
5Rail currentPR007:Rail pressure
regulator current
setpointX = 400 ± 5 mA
Default value:
1600 mAIn the event of a fault,
consult the interpretation
of faults DF053 Rail
pressure regulation
function and DF007 Rail
pressure sensor circuit. PR006:Rail pressure
regulator currentX = PR007 ± 5 mA
Default value:
1600 mA
PR080:Rail pressure
sensor voltageX = 0.5 V
Safe value: 5 VIn the event of a fault, refer
to the interpretation of
fault DF013 Sensor feed
voltage no. 3. 6Sensor voltagePR080:Rail pressure
sensor voltage0.5 < X < 1 V
Safe value: 5 V

DIESEL INJECTION
Fault finding – Conformity check13B
13B - 156V3 MR-372-J84-13B250$450.mif
EDC16
PROGRAM NO.: C1
Vdiag No.: 51
FUEL CIRCUIT
*Opening cyclic ratio signal
NOTESOnly check conformity after a complete check using the diagnostic tool. The values
shown in this conformity check are given as a guide.
Test Conditions: ENGINE AT IDLE SPEED, COOLANT TEMPERATURE > 80 ˚C.
Order FunctionParameter or Status
checked or ActionDisplay and Notes Fault finding
1Engine speedPR055:Engine speedIndicates the engine's
rotational speed in rpm.In the event of a fault, refer
to the interpretation for
fault DF005 Engine
speed sensor circuit.
2Injector codesET104:Injector code
operationYES
Indicates whether the
injector codes have been
programmedIn the event of a fault,
consult the interpretation
of DF276 Injector code
programming.
3PressurePR008:Rail pressure
setpointIndicates the theoretical
pressure value for
optimum engine
operation
X = 270 ± 50 barIn the event of a fault, refer
to the interpretation of
fault DF053 Rail
pressure regulator
function.
PR038:Rail pressureX = ~ 315 bar
Default value: 250 bar.In the event of a fault,
consult the interpretation
of fault DF007 Rail
pressure sensor circuit. PR048:OCR* rail
pressure
regulation valve35 < X <45 %
PR213:Rail pressure
loop differenceX = PR008 - PR038The fuel pressure
variation is the difference
between the rail pressure
and the rail pressure
setpoint. In the event of a
fault, consult the
interpretation of fault
DF007 Rail pressure
sensor circuit.

DIESEL INJECTION
Fault finding – Conformity check13B
13B - 157V3 MR-372-J84-13B250$450.mif
EDC16
PROGRAM NO.: C1
Vdiag No.: 51
FUEL CIRCUIT (continued)
NOTESOnly check conformity after a complete check using the diagnostic tool. The values
shown in this conformity check are given as a guide.
Test Conditions: ENGINE AT IDLE SPEED, COOLANT TEMPERATURE > 80 ˚C.
Order FunctionParameter or Status
checked or ActionDisplay and Notes Fault finding
4FlowPR017:Fuel flowX = 0 < X < 60 mg/stNone
PR157:Fuel flow setpointPR017 = PR157None
PR364:Cylinder no. 1
fuel flow
correction
± 1 mg/stIn the event of a fault, refer
to the interpretation of
test 8: POOR INJECTOR
OPERATION. PR405:Cylinder no. 2
fuel flow
correction
PR406:Cylinder no. 3
fuel flow
correction
PR365:Cylinder no. 4
fuel flow
correction
5Rail currentPR007:Rail pressure
regulator current
setpointX = 1400 ± 50 mA
Default value:
1600 mAIn the event of a fault,
consult the interpretation
of fault DF007 Rail
pressure sensor circuit.
PR006:Rail pressure
regulator currentX = PR007 ± 5 mA
Default value:
1600 mA
PR080:Rail pressure
sensor voltage1 < X < 1.5 V
Safe value: 5 VIn the event of a fault, refer
to the interpretation of
fault DF013 Sensor feed
voltage no. 3

DIESEL INJECTION
Fault finding – Parameter summary table13B
13B - 206V3 MR-372-J84-13B250$675.mif
EDC16
PROGRAM NO.: C1
Vdiag No.: 51DIESEL INJECTION
Fault finding – Parameter summary table
OCR*: opening cyclic ratioTool parameter Diagnostic tool title
PR005EGR valve opening setpoint
PR006Rail pressure regulator current
PR007Rail pressure regulator current setpoint
PR008Rail pressure setpoint
PR009Turbocharging pressure setpoint
PR011Turbocharging solenoid valve position correction
PR015Engine torque
PR016Alternator flow
PR017Fuel flow
PR022EGR valve position feedback loop difference
PR030Accelerator pedal position
PR035Atmospheric pressure
PR037Refrigerant pressure
PR038Rail pressure
PR041Turbocharging pressure
PR047Turbocharging pressure OCR*
PR048OCR* rail pressure regulation valve
PR051EGR valve position feedback
PR053Speed requested by air conditioning
PR055Engine speed
PR059Inlet air temperature
PR061Exterior air temperature
PR064Coolant temperature
PR071Computer feed voltage
PR073Air flowmeter feed voltage
PR076Refrigerant sensor voltage
PR077EGR valve position sensor voltage
MR-372-J84-13B250$675.mif

DIESEL INJECTION
Fault finding – Parameter summary table13B
13B - 207V3 MR-372-J84-13B250$675.mif
EDC16
PROGRAM NO.: C1
Vdiag No.: 51
OCR*: opening cyclic ratioTool parameter Diagnostic tool title
PR079Atmospheric pressure sensor voltage
PR080Rail pressure sensor voltage
PR081Inlet temperature sensor voltage
PR084Coolant temperature sensor voltage
PR089Vehicle speed
PR128First EGR valve offset
PR129Last EGR valve offset
PR130Cruise control setpoint
PR131EGR air flow variation
PR132Air flow
PR146Inlet air flow
PR147Pedal potentiometer voltage gang 1
PR148Pedal potentiometer voltage gang 2
PR157Fuel flow setpoint
PR171Air flow setpoint for EGR
PR190Engine idle speed setpoint.
PR213Rail pressure loop difference
PR220EGR valve OCR*
PR358Sensor reference voltage
PR364Cylinder no. 1 fuel flow correction
PR365Cylinder no. 4 fuel flow correction
PR385Exhaust pipe flow
PR405Cylinder no. 2 fuel flow correction
PR406Cylinder no. 3 fuel flow correction
PR417Air inlet valve OCR
PR420Damper valve error counter
PR672Damper valve position setpoint