change time RENAULT SCENIC 2011 J95 / 3.G Engine And Peripherals EDC16C36 Workshop Manual

13B-5V9 MR-372-J84-13B450$010.mif
DIESEL INJECTION
Fault finding – Introduction13B
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
4. FAULT FINDING PROCEDURE (continued)
Wiring check
Fault finding problems
Disconnecting the connectors and/or manipulating the wiring may temporarily clear the cause of a fault.
Visual inspection
Look for damage under the bonnet and in the passenger compartment.
Carefully check the protectors, insulation, and routing of the wiring, as well as the mountings.
Physical inspection
When working on wiring, use the diagnostic tool to highlight a change in the status of the faults, from a "stored"
fault to a "present" fault, or use the multimeter to view the status changes.
Make sure that the connectors are firmly secured.
Apply light pressure to the connectors.
Twist the wiring harness.
Checking insulation to earth
This check is carried out by measuring the voltage (multimeter in voltmeter mode) between the suspect connection
and the 12 V or 5V. The correct measured value is 0V.
Checking insulation in relation to + 12 V or + 5 V
This check is carried out by measuring the voltage (multimeter in voltmeter mode) between the suspect connection
and the earth. In the first instance, the earth may be taken on the chassis. The correct measured value is 0V.
Continuity check
A continuity check is carried out by measuring the resistance (multimeter in ohmmeter mode), with the connectors
disconnected at both ends. The expected result is: 1 Ω ± 1 Ω for each connection. The line must be fully checked,
and the intermediate connections are only included in the method if this saves time during the fault finding
procedure. The continuity check on the multiplex lines must be carried out on both wires. The measured value
should be 1 Ω ± 1 Ω.
Power supply check
This check can be carried out using a test light (21 W or 5 W depending on the maximum permissible load).

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DIESEL INJECTION
Fault finding – Features13B
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
Exhaust gas recirculation management:
The EGR (Exhaust Gas Recirculation) system involves removing exhaust gases and reintroducing them into the
inlet.
The exhaust gases are collected in the exhaust manifold (before the turbocharger), then directed to the EGR cooler
and the EGR valve.
EGR cooler
The EGR cooler bypass function cools the gases extracted from the exhaust via a gas-water exchanger and then
reintroduces the gases at the inlet. This cooler is equipped with an all-or-nothing solenoid valve, which enables
gases to be cooled or not cooled, depending on the emission control requirements.
EGR valve
The system comprises a direct current EGR valve and a potentiometer which reports the position of the valve.
A positive command controls its opening (0 → 100%).
The potentiometer serves to control and run fault finding on the valve.
The very first time the engine is started, then each subsequent engine start, the “valve closed” position is
programmed (offset). This value is compared to the very first offset or last programmed offset, for the purposes of
fault finding. It is also used to readjust the valve control function. This is why it is important to associate the EGR
valve to the computer which controls it.
Richness ratio sensor management (only on certain F9Q816 engines in VDiag 48):
The richness ratio sensor is mounted in the turbo outlet.
Its function is to reset the injection system drift.
The injection computer does not control the sensor immediately when the engine has just been started:
–ET300 Richness regulation is INACTIVE,
–PR779 Richness ratio sensor is equal to 1.
After a length of time that depends on the coolant temperature, with the engine running and in the absence of no
load conditions, the injection computer authorises the heating of the sensor:
–ET300 Richness regulation changes to ACTIVE,
– in about ten seconds, the PR778 Richness ratio sensor temperature increases to approximately 780°C,
– then the PR779 Richness ratio sensor displays a value of 0.3 ±0.1 at idle speed.
The turbocharger cooling pump:
Because of its high rotation speed, the turbocharger does not use ball bearings to ensure the pivot connection but
uses a bearing whose friction is reduced thanks to a pressurised film of oil.
When the engine is switched off, the oil is no longer under pressure and no longer provides the pivot connection. A
quantity of oil therefore remains, which collects around the bearing.
When the turbocharger is in operation, the bearing is subjected to high temperatures. After the engine is switched
off, the slow decrease in temperature heats the stagnant oil. This then modifies the viscosity of the oil and therefore
increases the risk of the turbocharger sticking.
To prevent this, a turbocharger coolant pump circulates coolant to lower the temperature of the turbocharger. It is
electrically activated for 5 mins if the engine coolant temperature exceeds 80°C. In addition, the coolant circulation
prevents deterioration of the liquid properties by stopping it collecting under the same temperature constraints as the
oil.

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DIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET704
ET705BRAKE SWITCH NO. 1BRAKE SWITCH NO. 2
STATUS DEFINITIONACTIVE: This status indicates that the brake pedal is depressed.
INACTIVE: This status indicates that the brake pedal is released.
NOTESSpecial notes:
Only perform these tests if the statuses do not correspond with the system
programming functions.
Note:
Statuses ET704 and ET705 should change status at the same time. If they are
inconsistent, consult the interpretation of fault DF228 Brake signal.
Use the Mégane II ph2, Scénic II ph2 Technical Note wiring diagram.
Conformity check with engine stopped and ignition on, or engine running, and engine coolant
temperature > 80°C
ACTIVEBrake pedal depressed.
A brake signal non-conformity may cause the engine to race during gear changes.
In the event of a fault, apply the interpretation of statuses ET704 Brake contact no. 1
and ET705 Brake contact no. 2.
INACTIVEBrake pedal released.
A brake signal non-conformity may cause the engine to race during gear changes.
In the event of a fault, apply the interpretation of statuses ET704 Brake contact no.1
and ET705 Brake contact no. 2.
EDC16C36_V44_ET704/EDC16C36_V4C_ET704/EDC16C36_V48_ET704/EDC16C36_V50_ET704/EDC16C36_V54_ET704/
EDC16C36_V58_ET704/EDC16C36_V44_ET705/EDC16C36_V4C_ET705/EDC16C36_V48_ET705/EDC16C36_V50_ET705/
EDC16C36_V54_ET705/EDC16C36_V58_ET705
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58

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DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR873OIL OXIDATION SIGNAL
PARAMETER
DEFINITIONThis parameter indicates the distance of the vehicle when the oil dilution threshold is
reached.
NOTESOnly apply the interpretation of this parameter if the OCS (oil control system)
program is activated on the instrument panel. On the instrument panel computer,
check the configuration reading LC106 OCS: WITH
This parameter is not operational in Vdiag44
Conformity check with engine stopped and ignition on, or engine running, and engine coolant
temperature > 80°C, without electrical consumers
The oil condition is calculated by the oxidation program in the injection computer, according to the number of
engine revolutions.
When this count reaches a certain threshold before the end of the oil service period, the injection computer sends
a signal to the instrument panel, which will display service due. Parameter PR873 corresponds to the vehicle
mileage at the time this signal is sent.
Then the instrument panel computer deducts 900 miles (1500 km) before displaying the message Service
required.
IMPORTANT
When the message Service required appears on the instrument panel, the customer must arrange an oil change
within the remaining 900 miles (1500 km).
EDC16CP36_V4C_PR873/EDC16CP36_V48_PR873/EDC16CP36_V50_PR873/EDC16CP36_V54_PR873/EDC16CP36_V58_PR873
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 with the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 4C, 48, 50,
54, 58

13B-348V9 MR-372-J84-13B450$152.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR875OIL DILUTION SIGNAL
PARAMETER
DEFINITIONThis parameter indicates the vehicle mileage when the oil dilution threshold is reached.
NOTESThis parameter should be interpreted only if the OCS (Oil Control System) program
is activated on the instrument panel. On the instrument panel computer, check the
configuration reading LC106 O.C.S: WITH.
Conformity check with engine stopped and ignition on, or engine running, and engine coolant temperature
> 80°C, without electrical consumers
The injection computer assesses the dilution rate of the engine oil according to the customer's driving style. When
the dilution level reaches a certain threshold before the end of the oil change interval, the injection computer sends
a signal to the instrument panel, which then displays Service required. Parameter PR875 corresponds to the
vehicle mileage at the time this signal is sent.
IMPORTANT
When the message service required appears on the instrument panel, the customer must carry out an oil service
immediately to prevent damage to their engine.
EDC16CP36_V50_PR875EDC16 C36
Program No.: 91
VDIAG No.: 50
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 with the diagnostic tool.

13B-357
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
SC017
CONTINUED 2
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 carry out the usual engine oil change before a second After-Sales regeneration.
Only for Vdiag 50:
– Change the engine oil if a message on the instrument panel requests it.
For the other VDiag:
–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.
– Switch off the ignition and wait for the diagnostic tool message (maximum time 8 minutes): Communication
lost with computer: EDC16C36, check the tool connection and computer power supply.
–Then switch on the ignition again, clear the present or stored faults from the computer memory (operation
to be carried out within 3 minutes of switching on the ignition).
– Check the weight of soot: PR383 Weight of soot in the particle filter.
– If PR383
≥ 1 g. Apply the procedure of test 12 Manual clearing of the weight of soot.
Only for Vdiag 50:
– Change the engine oil if a message on the instrument panel requests it.
– For the other Vdiags:
–Consult PR848 Number of regeneration failures. If this parameter is greater than 3, it is essential to change
the engine oil.
– Explain to the customer the procedure for regeneration when driving to avoid unnecessary repairs: see PART D
in the interpretation of DF312 Speed request.
EDC16 C36
Program No.: 91
Vdiag No.: 48, 50, 58

13B-358
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
SC017
CONTINUED 3
●Particle filter regeneration failed - run test Temperature upstream of turbine too low: regeneration has
failed because the temperature upstream of the turbine is too low. Run Test 8 Temperature upstream of
turbine too low.
In all cases, carry out the following operations:
– switch off the ignition and wait for the diagnostic tool message (maximum time 8 minutes): Communication
lost with computer: EDC16C36, check the tool connection and the computer supply.
– switch on the ignition and establish dialogue with the injection computer,
– run command SC036 Reinitialise programming,
– depending on the operation performed, select After particle filter regeneration with diagnostic tool, or After
particle filter replacement
– switch off the ignition and wait for the diagnostic tool message (maximum time 8 minutes): Communication
lost with computer: EDC16C36, check the tool connection and the computer supply.
–Then switch on the ignition again, clear the present or stored faults from the computer memory (operation
to be carried out within 3 minutes of switching on the ignition).
– Check the weight of soot: PR383 Weight of soot in the particle filter.
– If PR383
≥ 1 g. Apply test procedure 12 Manual clearing of the weight of soot.
If DF308 Particle filter clogged or DF312 Speed request is still present, contact Techline.
Note:
It is essential to change the engine oil and the oil filter in the following cases:
– following an After-Sales regeneration only if a message on the CLIP diagnostic tool requests it,
– following particle filter replacement,
after a second regeneration (when two successive regenerations).
EDC16 C36
Program No.: 91
Vdiag No.: 48, 50, 58

13B-390
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
ALP6
CONTINUED
Does the high pressure pump show traces of
grease? (Visual and tactile inspections)Location of the leak: Where does the leak
appear?
On the component
Do the high pressure pipes and the injector rail
show traces of grease? (Visual and tactile
inspections)If the leak is on the component, replace this
and the high pressure pipe(s) at the same
time as the component.
on theunion/join
Do the injectors show traces of grease? (Visual
and tactile inspections)– If the leak is on the join of a high pressure pipe
and the component, remove the high pressure
pipe and perform a visual inspection of the
unions: if you find damaged unions, change
the faulty component and the high pressure
pipe(s) removed at the same time as the
component.
– For safety reasons, high pressure pipes must
not be refitted. End of fault finding procedure
Reminder:
Do not replace the rail, pump or injector unless the union is found to be damaged during the visual inspections.
Bleed the fuel circuit and continue the checks.
A
YES
NO
YES
YES
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58