fuel cap RENAULT SCENIC 2011 J95 / 3.G Engine And Peripherals Workshop Manual

13B-10V4 MR-372-J84-13B000$020.mif
DIESEL INJECTION
Fault finding – System operation13B
DDCR INJECTION
Vdiag No.: 44, 48
Measuring the angular position (Cylinder reference sensor)
The angular position is measured using a magneto-inductive sensor triggered by machined teeth on the engine
flywheel. This flywheel has 60 teeth separated by six degrees, minus 2 missing teeth that form a notch.
A second sensor (Hall effect), activated by a machined tooth on the high pressure pump drive pulley
(synchronised with the camshaft), which rotates at half the engine speed, supplies a signal showing the progress of
the injection cycle. By comparing the signals from these two sensors, the computer's APS module (Angular Position
Subsystem) can supply the entire system with the synchronisation factors, namely: the angular position of
the flywheel, the engine speed, the number of the active injector, and the injection cycle timing. This module also
supplies the system with the engine speed signal.
Flow capacity function (VLC)
Because of the combination of several parameters such as the diesel fuel temperature, part wear, clogging of the
diesel filter, etc., the system may reach its limit during its service life. If this happens, the rail pressure cannot be
maintained because the pump lacks the necessary capacity. If the pump lacks the necessary capacity, this
programming will therefore reduce the requested flow to a value that will enable the pressure monitoring system to
control the pressure again.
The customer may have noticed a loss of vehicle performance when this program is activated (confirmed by
ET563 Flow capacity function). This is part of normal operation.
Function: Air flow management.
EGR valve control
The EGR (Exhaust gas recirculation) system comprises a proportional EGR valve with a built-in valve position
feedback potentiometer. The EGR valve position is controlled by the potentiometer in a closed loop and/or by
changes in the estimated air flow.
Calculation of the air flow
WITHOUT FLOWMETER (K9K 722)
Certain models are not fitted with air flowmeters. In this case the amount of fresh inlet air must be evaluated, based
on the values supplied by the surrounding systems. The (theoretical) air volume is calculated using a model with
these calculation parameters:
– the inlet air temperature measured by a sensor located after the turbocharger and/or after the intercooler (if fitted),
– the turbocharging pressure,
– the atmospheric pressure (external air),
– the EGR valve position,
– the fuel flow,
– the engine speed.
The atmospheric pressure sensor is optional. If fitted, it sends back an atmospheric pressure signal to an analogue
port on the micro-controller. If not, atmospheric pressure is recovered based on the turbocharger pressure
and the engine field.

13B-23V4 MR-372-J84-13B000$050.mif
DIESEL INJECTION
Fault finding – Fault summary table13B
DDCR INJECTION
Vdiag No.: 44, 48
Tool faultAssociated
DTCDiagnostic tool title
DF049 0530 Refrigerant sensor circuit
DF050 0571 Brake switch circuit
DF051 0575 Cruise control/speed limiterfunction
DF052 0200 Injector control circuit
DF053 0089 Rail pressure regulation function
DF054 0033 Turbocharging solenoid valve control circuit (728, 729)
DF056 0100 Air flow sensor circuit (728, 729)
DF057 2264 Water in diesel fuel detector circuit
DF059 0301 Misfiring on cylinder 1
DF060 0302 Misfiring on cylinder 2
DF061 0303 Misfiring on cylinder 3
DF062 0304 Misfiring on cylinder 4
DF089 0235 Inlet manifold pressure sensor circuit
DF098 0180 Fuel temperature sensor circuit
DF107 0604 Computer memory
DF112 0340 Cylinder reference sensor circuit
DF113 0608 Sensor feed voltage
DF114 0400 EGR solenoid valve circuit
DF116 C001 Multiplex network
DF121 0325 Accelerometer circuit
DF122 0609 Supply voltage pedal potentiometer gang 2
DF130 0087 Flow capacity function
DF1070 0534 Cold loop

13B-81
AFTER REPAIRDeal with any faults declared by the diagnostic tool. Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V4 MR-372-J84-13B000$062.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DDCR INJECTION
Vdiag No.: 44, 48
DF130
STOREDFLOW CAPACITY FUNCTION
NOTESSpecial notes:
If DF130, the engine may stop with the level 1 and 2 warning lights illuminated along
with the message Faulty injection.
Conditions for applying fault finding procedures to stored faults:
The fault is present with the engine running.
Check the connection and condition of the of the fuel flow actuator connector (IMV), and repair it if necessary.
Measure the resistance between tracks 1 and 2 of the flow actuator.
Replace the flow actuator if the resistance is not 5.3 Ω ± 0.5 Ω at 20°C.
Check the connection and condition of the computer 48-track brown connector B.
Repair if necessary.
Check the insulation, continuity and the absence of interference resistance on the following connection:
Computer connector B track M4 track 1 fuel flow actuator
Repair if necessary.
Check that there is fuel present in the tank and that it is correct. Run Test 13 Diesel fuel conformity check.
Run Test 1 Low pressure circuit check.
Run Test 6 High pressure system check.
Repair if necessary.
DDCR_V44_DF130M/DDCR_V48_DF130M

13B-152V4 MR-372-J84-13B000$120.mif
DIESEL INJECTION
Fault finding – Tests13B
DDCR INJECTION
Vdiag No.: 44, 48
IMV = fuel flow actuator
TEST 6 High pressure system check
NOTESSpecial note:
Certain faults make it impossible to carry out this test - deal with these first.
IMPORTANT: It is pointless and dangerous to engage the starter motor for more
than 5 seconds.
Preliminary Checks:
– Check for the presence of fuel
– Check that there is no air in the low pressure circuit. Run TEST 1: Low pressure circuit check.
– Ensure that the correct fuel is being used. Run TEST 13 Diesel fuel conformity check.
It is possible to check the high pressure supply pump capacity by carrying out the following procedure:
–With the ignition off, disconnect the low pressure actuator from the pump (IMV brown connector) and connect
a test IMV or the MOT. 1711 adapter.
– Electrically disconnect the four injectors.
– Switch on the ignition, connect the diagnostic tool and re-establish dialogue with the injection system.
– Go to the Main computer statuses and parameters screen.
– Run the test cold, PR064 Coolant temperature < 30°C or equal to the ambient temperature.
– Engage the starter for 5 seconds.
– Read the rail pressure maximum value (PR038) during the test on the diagnostic tool.
Is the rail pressure greater than 1050 bar?
A
NO
B
YES
DDCR_V44_TEST06/DDCR_V48_TEST06

13B-157V4 MR-372-J84-13B000$120.mif
DIESEL INJECTION
Fault finding – Tests13B
DDCR INJECTION
Vdiag No.: 44, 48
TEST 8
CONTINUED 2
If the engine does not start, only the static leak can be measured, that is the leak with the injector closed, not being
actuated and under high pressure.
Make sure that the ignition circuit is working correctly (minimum engine speed 200 rpm).
Tooling required
– Mot. 1711 Injector flow measuring kit.
Or: Use four tubes of internal diameter 4 mm and approximately 50 cm long and a test adapter (TEST IMV).
Procedure
– Switch off the ignition,
– disconnect the return pipes from the four injectors,
– cap the pump venturi tube to prevent the low-pressure circuit from depriming,
– connect the four transparent pipes in place of the return pipes (Mot. 1711),
– disconnect the low pressure actuator from the pump (brown IMV connector) and connect a test IMV or the
adapter of Mot. 1711,
– electrically disconnect the four injectors,
– switch on the ignition and engage the starter for 5 seconds,
– measure the amount of diesel fuel in each pipe.
Replace the injectors that have a leak return greater than 10 cm.
Switch off the ignition, and reconnect the four injectors electrically.
Disconnect the test IMV and reconnect the low-pressure actuator connector to the pump. Disconnect the
four transparent tubes and reconnect the injectors return circuit. Switch on the ignition again, and clear the injection
faults using the diagnostic tool.
A
NO

13B-159V4 MR-372-J84-13B000$120.mif
DIESEL INJECTION
Fault finding – Tests13B
DDCR INJECTION
Vdiag No.: 44, 48
TEST 9 Diesel filter check
Check the conformity of the diesel filter. Replace the filter with an original part (see MR
364 (Mégane II) or MR 370 (Scénic II),
Mechanical, 13A, Fuel supply, Fuel filter:
Removal - Refitting) Is the diesel filter in order?
– Switch off the ignition and analyse the diesel fuel in the diesel filter.
– Disconnect the diesel supply and return hoses from the filter.
– Block the filter inlets and outlets straight away with appropriate plugs.
– Remove the filter from its holder and shake it firmly while holding the caps in place. Tap the edge of the filter
with a screwdriver handle to detach any contamination. Empty the contents of the filter into a glass container by
lifting a protective plug, then loosening and completely removing the bleed screw.
Is there a deposit of black particles at the bottom of the container?
Pass a magnet beneath the container to collect
all the metal particles. Take the magnet away
from the container.Diesel filter in good order.
Do the particles collected, using the magnet,
cover a surface area greater than 1 cm
2?
Replace the entire injection system Diesel filter in good order.
NO
YES
YESNO
YES
YES
DDCR_V44_TEST09/DDCR_V48_TEST09

13B-181
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V4 MR-372-J84-13B000$140.mif
DIESEL INJECTION
Fault finding – Fault finding charts13B
InjectionDDCR
Vdiag No.: 44, 48
ALP10 Engine hesitation
NOTESOnly consult this customer complaint after a full check with the diagnostic tool.
See Feature, Function: Fuel supply management (timing, flow rate and pressure),
Flow capacity function (VLC) section.
Check that the fuel tank is correctly filled and that the fuel is correct by running TEST 13 Diesel fuel conformity
check.
Check the low pressure circuit by running TEST 1 Low pressure circuit check.
Using the diagnostic tool, check that the injector codes (C2I) are correctly entered on the identification screen. If
not, configure the correct injector codes using command SC002 Enter injector codes.
Is the engine wiring harness cut or pinched? Carry out the necessary repairs.
Is the compression in order? Carry out the necessary repairs.
Is the valve clearance set correctly? Carry out the necessary repairs.
YES
NO
NO
YES
NO
A
YES
DDCR_V44_ALP10/DDCR_V48_ALP10

13B-182
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V4 MR-372-J84-13B000$140.mif
DIESEL INJECTION
Fault finding – Fault finding charts13B
InjectionDDCR
Vdiag No.: 44, 48
ALP10
CONTINUED
Check the high pressure pump by running
TEST 6 High pressure system check.The vehicle has entered the "Flow capacity
function" program. This function is activated more
easily when: the external temperature is high, the
fuel level in the tank is at 1/4, the vehicle is laden
and if the vehicle speed is high. Is the "Flow capacity function"
programming active (ET563)?
Check the computer:
Check that the computer connectors are
properly locked.
Check the condition of the computer
connections (bent pin, signs of corrosion,
silicone, etc.).
If the connector(s) is faulty and if there is a
repair procedure (see Technical Note 6015A,
Repairing electrical wiring, Wiring:
Precautions for repair), repair the connector,
otherwise replace the wiring.Check the diesel filter.
Has the diesel fuel filter reached its full mileage?
Replace the diesel filter (see MR 364 (Mégane II)
or MR 370 (Scénic II), Mechanical, 13A, Fuel
supply, Fuel filter: Removal - Refitting).
Contact the Techline if the customer complaint is
still present.
Contact the Techline if the customer complaint
is still present.
A
YES
NO
YES

13B-183
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V4 MR-372-J84-13B000$140.mif
DIESEL INJECTION
Fault finding – Fault finding charts13B
InjectionDDCR
Vdiag No.: 44, 48
OCR*: opening cyclic ratio
ALP11 Loss of power
NOTESSpecial note:
Only consult this customer complaint after a full check with the diagnostic tool.
See explanation for flow capacity function in system operation.
In this case, the lack of power is due to insufficient vacuum for the OCR * setpoint given.
Is the "Flow capacity function" programming
active (ET563)?Check the diesel filter.
Is it close to the replacement mileage?
Using the diagnostic tool, check that the injector
codes (C2I) are correctly entered on the identification
screen. If not, configure the correct injector codes
using command SC002 Enter injector codes.Replace the diesel filter (see MR 364
(Mégane II) or MR 370 (Scénic II),
Mechanical, 13A, Fuel supply, Fuel filter:
Removal - Refitting).
Check the air inlet circuit by running TEST 5 Inlet
circuit check.
Is the engine oil level correct? Top up the oil level.
Is the catalytic converter clogged or damaged?Replace the catalytic converter (see MR
364 (Mégane II) or MR 370 (Scénic II),
19B, Exhaust, Catalytic converter:
Removal - Refitting).
YES
NO
NO
YES
NO
YES
YES
A
NO
DDCR_V44_ALP11/DDCR_V48_ALP11