2011 RENAULT SCENIC stop start

13B-14
MR-372-J84-13B200$108.mif
V13
DIESEL INJECTION
Fault finding – System operation
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
c) Functions hosted:
Air conditioning management assistance:
In the case of vehicles with climate control, the EDC16 system has the option of deactivating the air conditioning via
the UCH, under certain conditions of use:
– when requested by the driver,
– when starting the engine,
– if the engine overheats (in order to reduce the power the engine has to supply),
– when the engine speed is kept at a very high level (to protect the compressor),
– during transition phases (e.g. high acceleration demand for overtaking, anti-stalling and moving off). These
conditions are only taken into account if they do not occur repeatedly, so as to prevent system instabilities
(erratic deactivation),
– when certain faults appear.
Cold loop air conditioning management (Mégane II only):
The air conditioning is the cold loop type and its management shared between several computers.
The injection computer is responsible for:
– authorising cold requests according to the refrigerant pressure, the engine coolant temperature and the engine
speed,
– calculating the power absorbed by the compressor (from the refrigerant pressure),
– requesting operation of the GMV, from the UPC, according to the vehicle speed, the refrigerant pressure and the
engine coolant temperature.
The driver requests the air conditioning to be switched on by means of the ventilation selector coupled to a switch.
The cold air request is authorised or denied depending on the pressure measured. If this pressure is outside the
operating limits, the cold loop program is not activated.
Management of the damper valve:
The damper valve has three functions:
– the valve closes in order to block the passage of air towards the cylinders to shut off the engine. The aim of this is
to stop the engine as quickly as possible and to reduce instabilities as the engine is switched off.
– a "valving" function depending on the various engine functions: the damper valve closes by a few % in order to
create a venturi effect in the EGR valve flow section.
The aim of this is to accelerate the EGR gas flow rate and to reduce the emission of pollutants.
– regulatory function during the regeneration of the particle filter.
Thermoplunger management (only for Vdiag 58, 5C,18, 1C and 20):
This vehicle is fitted with thermoplungers. They are managed and activated by the injection system.
See configuration reading LC056 Thermoplungers: WITH or WITHOUT.
When necessary, the thermoplungers are actuated by the injection system only during particle filter
regeneration by means of a specific unit.
The maximum number of thermoplungers that can be managed is four; their activation depends mainly on the
coolant temperature (< 15°C) and air temperature (< 5°C).

13B-17
MR-372-J84-13B200$108.mif
V13
DIESEL INJECTION
Fault finding – System operation
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
If regeneration whilst driving has not been possible, the driver should request After-Sales regeneration in the
following cases:
– the soot weight is greater than 56 g for Vdiag 18.
– the soot weight is greater than 59 g or the number of failed regenerations is greater than 10 for Vdiag 1C
and 20.
This regeneration is carried out in the workshop. It is essential to follow the instructions described in the
interpretation of commands SC017 Particle filter regeneration. To carry out regeneration safely (see Te c h n i c a l
Note 5040A, Recommendations for particle filter regeneration).
Warning light management:
Instrument panel display
The computer manages the data display on the instrument panel relating to engine operation. This involves six
functions:
– the pre-postheating warning light,
– the coolant temperature warning light or warning message;
– the level 1 fault warning light (non-critical fault),
– the level 2 fault warning light (emergency stop),
– the OBD warning light (European On Board Diagnostic),
– particle filter warning message or light.
These six functions are represented by 4 or 5 warning lights and/or messages displayed by the trip computer.
In addition, for vehicles fitted with a voice synthesiser the illumination of some warning lights may be accompanied
by a spoken message (refer to the Driver's Handbook for the vehicle concerned).
A 3 second visual inspection (automatic test procedure managed by the instrument panel) is carried out by the
injection computer when the ignition is switched on.
Orange pre-post heating/non-critical fault SERVICE warning light (level 1)
This light is used both as an in-operation indicator light and as a system fault indicator:
– Continuously lit with + after ignition feed:
Indicates plug preheating (this light goes out when preheating is complete and the engine is able to start).
– Continuously lit accompanied by the message Check injection or Electronic fault:
Indicates a level 1 fault (involving operation of the injection system in defect mode).
The driver should carry out repairs as soon as possible. IMPORTANT
The particle filter must be replaced after a period of time which largely depends on the grade of engine oil used.
This information is provided in the vehicle's Driver's handbook.
After replacing the particle filter, it is essential to reconfigure certain parameters in the computer (see SC036
Reinitialise programming).

13B-37
MR-372-J84-13B200$252.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF005
PRESENT
OR
STOREDENGINE SPEED SENSOR CIRCUIT
1.DEF : No signal
2.DEF : Inconsistent signal
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present during engine starting attempts or while the engine is
running.
Special notes:
Use bornier Ele. 1681 or Ele. 1590 for all operations on the computer connectors.
The engine speed sensor is consistent with the camshaft sensor.
If the fault is present:
– it is impossible to start the engine or the engine stops,
– the level 2 warning light is lit.
Check the engine speed sensor connections.
Repair if necessary.
Check that the sensor is correctly mounted and that the flywheel target is not damaged.
Check that the gap between the engine speed sensor and the engine flywheel is 0.5 to 1.8 mm.
Measure the resistance of the engine speed sensor between terminals A and B of its black connector.
Replace the engine speed sensor if its winding resistance is not 510 Ω < X < 850 Ω for an engine temperature of
20°C.
Check the injection computer connections.
Repair if necessary.
Check for continuity and the absence of interference resistance of the following connections:
– connection code 3BG,
– connection code 3BL.
between components 120 and 149.
If the connection or connections are faulty and there is a repair method (see Technical Note 6015A, Repairing
electrical wiring, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
If the fault is still present, contact the Techline.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF005/EDC16_V58_DF005/EDC16_V5C_DF005/EDC16_V18_DF005/EDC16_V1C_DF005/EDC16_V20_DF005

13B-38
MR-372-J84-13B200$252.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF007
PRESENT
OR
STOREDRAIL PRESSURE SENSOR CIRCUIT
CC.0: Short circuit to earth
CO.1: Open circuit or short circuit to + 12 V
1.DEF: Offset at minimum threshold
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present during engine starting attempts or while the engine is
running.
Special notes:
Use bornier Elé. 1681 or Elé. 1590 for all operations on the computer connectors.
If the fault is present:
– the engine will stop immediately,
– restarting will not be possible,
–the level 2 warning light is lit.
Priorities when dealing with a number of faults:
Deal with fault DF013 Sensor supply voltage no. 3 first, if it is present or stored.
CC.0
NOTESNone
Check the rail pressure sensor connectors.
Check the injection computer connections.
Repair if necessary.
Check the continuity and insulation to earth of the following connections:
– connection code 3LY,
– connection code 3LX,
between components 120 and 1032.
If the connection or connections are faulty and there is a repair method (see Technical Note 6015A, Repairing
electrical wiring, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
If the fault is still present, replace the rail pressure sensor and tighten it to 35 ± 5 N.m.
Observe the safety advice (see Introduction).
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF007/EDC16_V58_DF007/EDC16_V5C_DF007/EDC16_V18_DF007/EDC16_V1C_DF007/EDC16_V20_DF007

13B-52
MR-372-J84-13B200$252.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF013
PRESENT
OR
STOREDSENSOR SUPPLY VOLTAGE NO. 3
1.DEF: Sensor reference voltage too low
2DEF: Sensor reference voltage too high
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present after carrying out a road test or after several attempts at
starting the engine.
Special notes:
If the fault is present:
– the EGR function is inhibited,
– the engine stops,
– the level 2 warning light is lit,
– the OBD warning light illuminates after three consecutive driving cycles (start the
engine + 5 seconds + switch off the ignition and wait 1 minute).
Use bornier Elé.1681 or Elé.1590 for any operation on the injection computer
connectors.
WARNING
This fault may appear if the wiring harness has been damaged.
Follow the procedure described in the Wiring Check in the Introduction.
This check enables the condition and the conformity of the engine wiring harness to be checked.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF013/EDC16_V58_DF013/EDC16_V5C_DF013/EDC16_V18_DF013/EDC16_V1C_DF013/EDC16_V20_DF013

13B-80
MR-372-J84-13B200$288.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF053
PRESENT
OR
STORED
RAIL PRESSURE REGULATION FUNCTION
CC.1: Short circuit to + 12 V
CC.0: Short circuit to earth
CO: Open circuit
1.DEF: Internal electronic fault
2.DEF: Pressure measured too low
3.DEF: Pressure measured too high
4.DEF: Insufficient pressure
5.DEF: Pressure < minimum
6.DEF: Pressure > maximum
7.DEF: Significant pump control
8.DEF: Above maximum threshold
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present after:
– the engine is started,
– a road test,
– an actuator command AC011 Rail pressure regulator.
Special notes:
If the fault is present:
– it is not possible to start the engine,
– engine stops if already started,
–if 3.DEF is present, the level 1 warning light is lit,
– if one of the other faults is present, the level 2 warning light is lit.
Use bornier Elé.1681 or Elé.1590 for any operation on the injection computer
connectors.
CC.1
NOTESNone
Check the rail pressure regulator connectors.
Check the injection computer connections.
Check the low pressure circuit by running test 3 Low pressure circuit check.
Check the conformity of the fuel used by running test 11 Diesel fuel conformity check.
Check the overpressure valve, run test 12 Incorrect operation of the overpressure valve,
Check the operation of the injectors, run test 9 Incorrect injector operation.
Repair if necessary.
Measure the resistance of the rail pressure regulator between connections 3HI and 3FB (Mégane II and
Laguna II) or 3FB1 (Scénic II).
Replace the injection pump if its resistance is not 3 ohms ± 1 at 20°C.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF053/EDC16_V58_DF053/EDC16_V5C_DF053/EDC16_V18_DF053/EDC16_V1C_DF053/EDC16_V20_DF053

13B-89
MR-372-J84-13B200$288.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF055
CONTINUED 1
1.DEF
NOTESNone
Check the turbocharging pressure sensor connections,
Check the connections of the turbocharging solenoid valve,
Check the injection computer connections.
Repair if necessary.
Check the sealing of the high pressure air circuit:
– disconnected or pierced pipes,
– pressure sensor disconnected or poorly fitted (seal present),
– intercooler pierced (to check the intercooler: with the vehicle stopped, stabilise the engine speed between 3500
and 4000 rpm and check that there are no leaks).
Check the conformity of the turbocharging pressure signal and run test 2Air line at the turbocharger, test 6
Turbocharger control solenoid valve check and test 7 Turbocharger.
Check that the turbocharger and the control circuit are working:
– With the engine stopped, check that the control rod is (in the rest position the control rod is retracted).
– start the engine and check that the control rod disengages and pulls on the turbocharger geometry (when the
engine is stopped, the control rod should return to the rest position).
If the control rod does not move correctly, carry out the following checks:
1. Check the control vacuum pressure:
– Disconnect the solenoid valve inlet hose and connect it to a pressure gauge,
– start the engine and stabilise it at idle speed,
– if the vacuum is not between 700 mbar < X < 900 mbar, check the vacuum circuit from the vacuum pump,
– Stop the engine, reconnect the intake hose and proceed to step 2.
2. Solenoid valve control check:
– Disconnect the solenoid valve outlet hoses,
– start the engine and stabilise it at idle speed,
– place your hand on the solenoid valve and block the outlet connection with your thumb,
– if there is no detectable vibration of the solenoid valve, check that the computer output is operating correctly
(see DF054 Turbocharging solenoid valve control circuit 1.DEF).
3. Solenoid valve operation check:
– Connect the pressure gauge to the solenoid valve outlet union,
– start the engine and stabilise it at idle speed,
– if the vacuum is not 700 mbar < X < 900 mbar, replace the solenoid valve.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.

13B-118
MR-372-J84-13B200$324.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF226
PRESENT
OR
STORED
DAMPER VALVE CIRCUIT
CC.1:Short circuit to + 12 V
CC.0: Short circuit to earth
CO: Open circuit
CC: Short circuit
1.DEF: Internal electronic fault
2.DEF: External fault finding
3.DEF: Values outside tolerances
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present after:
– the engine is started,
– a road test,
– actuator command AC012 Damper valve;
– the ignition is switched off for 1 minute.
Special notes:
If the fault is present:
– it is difficult or even impossible to start the vehicle,
– the engine stops noisily,
– the level 1 warning light is illuminated.
Use bornier Elé.1681 or Elé.1590 for any operation on the injection computer
connectors.
Priorities when dealing with a number of faults:
Deal with fault DF046 "Battery voltage" first if it is present or stored.
IMPORTANT
This fault can result in a rapid and significant fouling of the particle filter.
CC.1
NOTESAfter any work is carried out on the damper valve, run SC036
Reinitialise programming and select Damper valve, then
switch off the ignition and wait 1 minute.
Check the damper valve connections.
Check the injection computer connections.
Repair if necessary.
Check the continuity and insulation from + 12 V of the following connections:
– connection code NT (Laguna II) or N (Scénic II and Mégane II) between component 1461 and chassis earth
NT or N.
– connection code 3VN,
– connection code 3VM.
between components 120 and 1461.
If the connection or connections are faulty and there is a repair method (see Technical Note 6015A, Repairing
electrical wiring, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
If the fault is still present, replace the damper valve.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF226/EDC16_V58_DF226/EDC16_V5C_DF226/EDC16_V18_DF226/EDC16_V1C_DF226/EDC16_V20_DF226