oil pressure RENAULT SCENIC 2011 J95 / 3.G Engine And Peripherals EDC16 Workshop Manual

13B-9
MR-372-J84-13B200$072.mif
V13
13B
DIESEL INJECTION
Fault finding – Cleanliness guidelines
I - HAZARDS ASSOCIATED WITH CONTAMINATION
The high pressure direct injection system is highly sensitive to contamination. The risks associated with
contamination are:
– damage to or destruction of the high pressure injection system,
– components jamming,
– a component leaking.
All After-Sales operations must be performed under very clean conditions. This means that no impurities (particles a
few microns in size) should have entered the system during dismantling.
The cleanliness principle must be applied from the filter to the injectors.
What are the sources of contamination?
– metal or plastic swarf,
–paint,
–fibres:
– from cardboard,
– from brushes,
–from paper,
– from clothing,
– from cloths,
– foreign bodies such as hair,
–ambient air
–etc.
II - INSTRUCTIONS TO BE FOLLOWED PRIOR TO ALL OPERATIONS
Check that you have plugs for the unions to be opened (set of plugs available from the Parts Department). The plugs
are single-use only. After use, they must be discarded (once used they are soiled and cleaning is not sufficient to
make them reusable). Unused plugs must be discarded.
Check that you have hermetically resealable plastic bags for storing removed parts. Parts stored in this way will be
less susceptible to the risk of contamination. The bags are to be used once only, and discarded after use. IMPORTANT
Cleaning the engine using a high pressure washer is prohibited because of the risk of damaging connections.
In addition, moisture may collect in the connectors and create electrical connection faults.
IMPORTANT
Before any work is carried out on the high pressure injection system, protect:
– the accessories and timing belts,
– the electrical accessories, (starter, alternator, electric power-assisted steering pump),
– the flywheel surface, to prevent any diesel from running onto the clutch friction plate.
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
MR-372-J84-13B200$072.mif

13B-21
MR-372-J84-13B200$144.mif
V13
13B
DIESEL INJECTION
Fault finding – Replacement of components
COMPUTER REPLACEMENT OR REPROGRAMMING
Two operations must be performed when replacing or reprogramming the computer:
SC003 Save computer data and SC001 Enter saved data.
– Run command SC003 Save computer data before replacing or reprogramming the computer. This enables
certain data to be saved in the diagnostic tool so that the new computer* can be reconfigured like the old one.
The saved data includes: injector codes, EGR programming, specific data for particle filter operation and vehicle
options.
– Run command SC001 Write saved data after replacing or reprogramming the computer. This command
enables the data (saved by the command SC003 Save computer data) to be rewritten in the new computer*.
If you cannot establish dialogue with the computer being replaced: you will not be able to save anything.
After replacing the computer:
– Manually enter the IMA codes for each injector by reading the code on each injector (see 13B, Diesel injection,
Replacement of components, Injector replacement).
– Enter the data specific to particle filter operation by running SC036 Reinitialise programming and select After
replacing the injection computer with no save option.
Exhaust gas recirculation valve data is programmed automatically the 1st time the new computer is switched on*.
* New computer or reprogrammed computer.
Specific to the cruise control/speed limiter operation to be carried out before reprogramming of the
computer:
Before reprogramming the injection computer, move the main cruise control/speed limiter switch to the rest
position. The information about the cruise control or the speed limiter displayed on the instrument panel
disappears.
Otherwise, if the main switch remains in the cruise control or speed limiter position during and after reprogramming,
the Cruise control/Speed limiter function will not be operational.
The procedure for resetting the function is as follows:
– Vehicle ignition on.
– Position the cruise control/speed limiter switch in the rest position (the computer then detects the rest position).
– Position the cruise control/speed limiter switch in the Cruise control position to activate the Cruise control
function.
– Position the cruise control/speed limiter switch in the Speed limiter position to activate the Speed limiter function. IMPORTANT
– Switch on the diagnostic tool (mains or cigarette lighter supply).
– Connect a battery charger.
– Cut off all the electrical consumers (lights, interior lighting, air conditioning, radio CD, etc.).
– Wait for the engine to cool (engine coolant temperature < 60° and air temperature < 50°).
– For Vdiags 50, 58, 5C, during (re)programming of the computer, the engine fan assemblies are actuated
automatically.
– For Vdiags 18, 1C, 20, during (re)programming of the computer, the instrument panel screen displays
“Oil pressure fault”.
– Ignore this message and do not take any action in connection with it.
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
MR-372-J84-13B200$144.mif

13B-29
MR-372-J84-13B200$216.mif
V13
DIESEL INJECTION
Fault finding – Fault summary table
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
Tool
faultDiagnostic tool titleAssociated
DTCLevel 1 fault
warning light
(Orange
heater plugs
"on" indicator
light)Level 2 fault
warning light
(Red
overheating
warning light)No fault
warning
light onOBD
warning
light lit
DF047Computer feed voltage 615 1.DEF
DF049Refrigerant sensor
circuit530 CC.1/CO.0
DF050Brake switch circuit 5711.DEF/
2.DEF
DF051Cruise control/speed
limiter function5751.DEF/
2.DEF/
3.DEF
DF053Rail pressure
regulation function89 3.DEFCC.0/CC.1/CO/
1.DEF/2.DEF/
4.DEF/5.DEF/
6.DEF/7.DEF
DF054Turbocharging
solenoid valve control
circuit33CO/CC.0/CC.1/
1.DEF/
2.DEF/3.DEF
4.DEF/5.DEFCC.0
DF055Turbocharging
pressure regulation
circuit243 1.DEF/2.DEF
DF056Air flow sensor circuit 100CO.0/CC.1/
1.DEF/2.DEFCO.0/
CC.1/
1.DEF/
2.DEF
DF057Water in diesel fuel
detector circuit2264 X
DF058Oil temperature sensor
circuit195CC.0/
CO.1
DF059Misfiring on cylinder 1 301 X
DF060Misfiring on cylinder 2 302 X

13B-211
MR-372-J84-13B200$576.mif
V13
DIESEL INJECTION
Fault finding – Parameter summary table
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
Tool parameter Diagnostic tool title
PR061Exterior air temperature
PR064Coolant temperature
PR066Oil temperature
PR071Computer feed voltage
PR073Air flowmeter feed voltage
PR076Refrigerant sensor voltage
PR077EGR valve position sensor voltage
PR079Atmospheric pressure sensor voltage
PR080Rail pressure sensor voltage
PR083Air temperature sensor voltage
PR084Coolant temperature sensor voltage
PR085Oil 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
PR190Idle speed setpoint
PR209Turbocharging pressure loop difference
PR213Rail pressure loop difference

13B-256
MR-372-J84-13B200$648.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of parameters
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
PR132
CONTINUED
Sensor electrical conformity.
Test the air inlet circuit (from the air filter inlet to the inlet manifold tracts,
apply test 4 Turbocharged air inlet circuit check):
– air filter unit inlet not blocked and filter not clogged,
–visual inspection only, run test 4 Turbocharged air inlet circuit check for ALP2 Starting difficult or
impossible,
– oil vapour recirculation circuit connected correctly,
–absence of leaks or blockages in the low and high pressure air circuits: ducts, presence and tightness of the
mounting clips, mounting of the turbocharging pressure sensor, intercooler, etc.
– check that the damper valve is not jammed.
Carry out the necessary repairs.
Check the electrical conformity of the air flowmeter:
Check the + 5 V supply to the air flowmeter on connection 3KJ between components 120 and 799.
Check the + 12 V after relay supply to the air flowmeter on connection 3B between components 120 and 799.
Check the continuity and the absence of interference resistance on the following connections:
– connection code 3DV,
– connection code 3DW.
Between components 120 and 799.
If any of the connections are faulty and there is a repair method (see Technical Note 6015A, Electrical wiring
repair, Wiring: precautions for repairs), repair the wiring; otherwise replace the wiring.
With the flow meter connected, the vehicle ignition on and engine stopped:
Measure the voltage between connections 3DV and 3DW between components 120 and 799.
Replace the air flowmeter if its voltage is not approximately 0.5 V < PR073 Air flowmeter supply voltage < 0.7 V.
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.

13B-296
MR-372-J84-13B200$756.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of commands
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
SC017
CONTINUED 1
DESCRIPTION OF THE PROCESS
particle filter regeneration takes place in 3 stages (values given as a guide only):
–Warm-up phase: the engine speed is fixed or varies between 1000 rpm and 1650 rpm.
This phase lasts at least 3 minutes, until the coolant temperature exceeds 80°C.
–Regeneration phase: the engine speed is fixed or varies between 1000 rpm and 1650 rpm. Engine injection
is retarded. The exhaust fumes rise in temperature and burn the soot retained in the particle filter. The particle
filter downstream temperature starts to rise after the particle filter upstream temperature due to the
volume of the particle filter. Then the combustion of the soot stored in the particle filter causes the particle filter
downstream temperature to increase, possibly reaching more than 700°C depending on the amount of soot in
the filter (with a particle filter upstream temperature of approximately 600°C). This phase lasts between 20
and 25 minutes.
–Cooling phase: the engine speed is fixed or varies between 1000 rpm and 1650 rpm.
Engine injection returns to normal and the exhaust gases cool the particle filter.
This phase lasts 3 minutes. At the end of this period, the engine speed returns to idle speed or remains fixed at
1500 rpm.
The process lasts at least 30 minutes (regeneration time will be increased depending on how long it takes for
the coolant temperature to reach 80°C).
CONFIRMING THE REGENERATION PROCESS:
At the end of regeneration, a message appears to announce whether the regeneration was successful:
●Particle filter regeneration finished:
Consult PR1012 Weight of soot after regeneration. If PR1012 is less than 15 g, the particle filter regeneration
completed correctly. If PR1012 is greater than 15 g, a second particle filter regeneration must be performed using
the command in the diagnostic tool and choose command SC017.
IMPORTANT:
Before performing a second After-Sales regeneration of the particle filter, the engine must be allowed to cool
down for 2 hours with the bonnet open.
Do not systematically change the engine oil before a second After-Sales regeneration.
Consult PR848 Number of regeneration failures. If PR848 is greater than 3, change the engine oil.
●Particle filter too full – replace the particle filter: regeneration has failed. The weight of soot in the particle
filter is so great that it is creating back-pressure. Deal with any faults that appear or replace the particle filter.
Run command SC036 Reinitialise programming and select After particle filter replacement.
Check the weight of soot: PR383 Weight of soot in the particle filter.
If PR383
≥ 1 g. Apply the procedure for test 8 Manual clearing of the soot weight.

13B-323
MR-372-J84-13B200$828.mif
V13
DIESEL INJECTION
Fault finding – Fault Finding Chart
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
ALP 4
CONTINUED
Check the injector operation: run test 9.
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.
Check the consistency of the signal: of the air flowmeter, of the engine coolant temperature sensor, of the fuel
temperature sensor and of the engine speed.
Check the connections, continuity and absence of interference resistance on the air flow sensor (run DF056 Air
flow sensor circuit, 2.DEF), the engine coolant temperature sensor (run DF001 Coolant circuit, 1.DEF), and
the engine speed (run DF195 Engine speed / camshaft sensor consistency, 2.DEF).
Check:
– That the diesel filter is not clogged (for the test, see DF053 Rail pressure regulation function 2.def).
– That there are no leaks on the high and low pressure diesel circuits, run Test 4 Turbocharged air inlet circuit
check.
– That the oil vapour rebreathing system is connected.
– The flow regulator (jammed / seized), apply the interpretation of command AC011 Rail pressure regulator.
– Check the timing setting (and the position of the high pressure pump pinion)
– Check the engine compressions (cylinder compression balance with the Compression test function on the
CLIP Technic tool).
– Measure the engine compressions with the special tool
– If the fault is still present, contact the techline.
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.

13B-351
MR-372-J84-13B200$936.mif
V13
DIESEL INJECTION
Fault finding – Tests
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
TEST 9
CONTINUED 1
CASE No. 2: If at least one of these values is equal to or less than - 5 mg/st
– Check the valve clearance.
– Check the level and condition of the engine oil.
– Remove the injector with the largest correction.
– If there is diesel fuel contamination, check the condition of the cylinder concerned (cylinder, piston, valves).
Use an endoscope if possible.
– Only replace the removed injector, and modify the IMA code using command SC002 Enter injector codes
(see Interpretation of commands).
–Apply Part B of this test to confirm the fault finding.
CASE No. 3: If at least one of these values does not stabilise (20 seconds after starting)
– Check the low pressure circuit using Test 4 Low pressure circuit check.
– Check the conformity of the fuel by applying Test 11 Diesel fuel conformity check.
–Apply Part B of this test to confirm the fault finding procedure
CASE No. 4: If all the fuel flow correction values are correct (between - 5 mg/st and + 5 mg/st)
–Apply Part C of this test (Fuel return flow measurement).
IMPORTANT
When removing or refitting injectors, follow the cleanliness and safety instructions (see MR 364 (Mégane II), 370
(Scénic II) or 395 (Laguna II), Mechanical, 13B, Diesel injection, Diesel injector: Removal - Refitting).