air conditioning RENAULT SCENIC 2011 J95 / 3.G Engine And Peripherals EDC16C36 Workshop Manual

13B-13V9 MR-372-J84-13B450$040.mif
DIESEL INJECTION
Fault finding – Role of components13B
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
Particle filter:
The particle filter retains the particles for destruction during regeneration, preventing these particles from being
discharged into the atmosphere (engine type F9Q816 only).
TDC sensor:
The angular position is measured using a magneto-inductive sensor triggered by the machined teeth on the engine
flywheel. This sensor gives the engine speed as well as the position of the crankshaft for injection.
Camshaft sensor:
This sensor provides a signal to perform the injection cycle.
When the piston for cylinder 1 is at top dead centre (TDC), it may be either at the end of the compression stroke or
at the end of the exhaust stroke. The camshaft sensor makes the distinction between these two states.
Electric coolant pump:
The electric water pump is activated if the coolant temperature has reached a significant temperature threshold
when the engine has stopped.
Role: to cool the turbocharger when the engine is stopped.
Refrigerant pressure sensor:
Its role is to measure the refrigerant pressure in the air conditioning circuit.
Heating elements:
The heating elements heat the engine coolant to improve user comfort (only on certain types of F9Q816 engine
in Vdiag 48).
Engine coolant temperature sensor:
The engine coolant temperature sensor informs the computer of the engine coolant temperature.
Air temperature sensor:
The air temperature sensor is fitted inside the inlet manifold and informs the computer of the temperature of the air
taken in by the engine.
Turbocharging pressure sensor solenoid valve:
This solenoid valve operates the turbocharger wastegate pneumatic circuit to lower the turbocharging pressure.
Catalytic converter:
The role of the catalytic converter is to convert pollutant gases into harmless gases.
Fan unit relay:
This relay controls the activation of the engine cooling fan assembly when a temperature threshold has been
exceeded.
Accelerator potentiometer:
The accelerator potentiometer informs the computer of the position of the accelerator pedal (engine load).

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DIESEL INJECTION
Fault finding – Features13B
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
a. The computer:
Determines the value of injection pressure necessary for the engine to operate correctly and then controls the
pressure regulator.
Checks that the pressure value is correct by analysing the value transmitted by the pressure sensor located on the
rail.
It determines the injection timing required to deliver the right quantity of diesel fuel and the moment when injection
should start. Controls each injector electrically and individually after determining these two values.
The flow injected into the engine is determined by:
– the duration of injector control,
– the rail pressure (regulated by the computer),
– the injector opening and closing speed,
– the needle stroke (determined by a constant for the type of injector),
– the nominal hydraulic flow of the injector (specific to each injector).
The computer manages:
– idling regulation,
– exhaust gas flow reinjection to the inlet (EGR),
– fuel supply check (advance, flow and rail pressure),
– the fan assembly control,
– the air conditioning (cold loop function),
– the cruise control/speed limiter function,
– pre-post heating control,
– indicator lights control via the multiplex network,
– the catalysed particle filter operation (F9Q816 engine only).

13B-18V9 MR-372-J84-13B450$050.mif
DIESEL INJECTION
Fault finding – Features13B
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
b. The connections between the vehicle's various computers are multiplexed.
The electronic system fitted in this vehicle is multiplexed.
It enables dialogue between the various vehicle computers. As a result:
– the fault warning lights on the instrument panel are lit by the multiplex network,
– vehicle faults are displayed by the multiplex network,
– the vehicle speed sensor on the gearbox is not needed.
The vehicle speed signal on the instrument panel is sent by the ABS computer via the multiplex network. The vehicle
speed signal is mainly used by the injection computer, the airbag computer and the automatic transmission
computer (if the vehicle is fitted with this).
c. Functions hosted:
Air conditioning management assistance:
For vehicles with air conditioning, the EDC16C36 system provides 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. under heavy acceleration when overtaking, anti-stalling and moving off strategies).
These conditions are only taken into account when they do not occur repeatedly, in order to prevent system
instabilities (erratic deactivations), when certain faults appear.
Management of the damper valve:
The damper valve currently 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.
– “valving” function depending on the engine operation: the damper valve closes by a few % to create a “'venturi”'
effect at the EGR valve passage section.
The aim of this is to accelerate the air flow of EGR gases and to reduce the emission of pollutants.
Thermoplunger management (only on certain F9Q816 engines in VDiag 48):
This vehicle is fitted with thermoplungers. They are managed and activated by the injection system.
There are two types of program:
– controlled by the injection system during particle filter regeneration,
– passenger compartment function; the air conditioning requests the injection to activate one or more thermoplungers
to raise the air temperature in the passenger compartment. The injection computer authorises the actuation or non-
actuation of the thermoplungers according to the operating phases and the power requirements of the engine.
The maximum number of thermoplungers that can be actuated is four. Their actuation depends mainly on the
coolant temperature (< 15°C) and the air temperature (< 5°C).

13B-28V9 MR-372-J84-13B450$070.mif
13B
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
Summary of available configuration readings
NOTESConfiguration readings are used to check the state of configurations performed.
The configuration readings cannot be changed.
The computer is configured as soon as the one of the vehicle's optional system
components is operated.
In the event of a fault, consult the interpretation of command RZ005 Programming.
LC009Air conditioning
WITH OR WITHOUT
LC056Heating elements
WITH OR WITHOUT
LC065Water in diesel fuel sensor
WITH OR WITHOUT
LC120Cruise control
WITH OR WITHOUT
LC121Speed limiter
WITH OR WITHOUT
DIESEL INJECTION
Fault finding – Configuration and programming

13B-29V9 MR-372-J84-13B450$080.mif
13B
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
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 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
are: injector codes, EGR programming, vehicle options.
–Run SC001 Enter saved data after replacing or reprogramming the computer. This 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, write the IMA codes of each injector manually using command SC002 Enter injector
codes by reading the code on each injector (see Replacing the injectors).
Only on F9Q816 engines:
– Enter the data specific to particle filter operation by running SC036 Reinitialise programming and selecting after
replacing injection computer with no save option.
Exhaust gas recirculation valve data is programmed automatically the 1st time the new computer is turned 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 main switch in rest position (the computer then detects the rest position).
– Position the switch in Cruise control position to activate the Cruise control function.
– Position the switch in 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°).
– During (re)programming, the instrument panel screen displays "Oil pressure fault".
Ignore this message and do not take any action in connection with it.
DIESEL INJECTION
Fault finding – Replacement of components

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DIESEL INJECTION
Fault finding – Interpretation of faults13B
DF012
PRESENT
OR
STOREDSENSOR SUPPLY VOLTAGE NO. 2
1.DEF: Above maximum threshold
2.DEF: Below minimum threshold
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present after:
– the ignition is switched on,
– starting the engine,
– a road test.
Special notes:
If the fault is present:
– engine torque limited,
– the cruise control/speed limiter function is switched off,
– thermoplungers cut-off,
– air conditioning is switched off,
– the EGR function is inhibited by the engine management computer,
–The level 1 and European On Board Diagnostic warning lights are illuminated.
Use bornier Elé. 1681 for all operations on the engine management computer.
Use Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2.
EDC16C36_V44_DF012/EDC16C36_V4C_DF012/EDC16C36_V48_DF012/EDC16C36_V50_DF012/EDC16C36_V54_DF012/
EDC16C36_V58_DF012
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 using the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58

13B-150
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 using the diagnostic tool.
V9 MR-372-J84-13B450$103.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DF232
PRESENT
OR
STOREDREFRIGERANT PRESSURE SENSOR CIRCUIT
CC.0: Short circuit to earth
CO.1: Open circuit or short circuit to +12 V
NOTESPriority when dealing with a number of faults:
If DF012 Sensor feed voltage no. 2 is present or stored:
– deal with it first,
– fan assembly GMV1 activated (low-speed),
– heating and air conditioning system inhibited.
Use Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2.
Check the condition of the refrigerant pressure sensor connector (see Wiring Diagram Technical Note,
Mégane II ph2, Scénic II ph2, component code 1202) and ensure that it is operating correctly.
Check the condition of the engine management computer connector (see Wiring Diagram Technical Note,
Mégane II ph2, Scénic II ph2, component code 120).
If the connector or connectors are 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 insulation, continuity and the absence of interference resistance on the following connections:
– connection codes 38U, 38X, 38Y between components 1202 and 120.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
If the wiring of the particle filter downstream temperature sensor, component code 1288, is present (with or without
the sensor being present), check the electrical insulation in relation to + 12 V between the following connections:
•3XU between components 120 and 1288,
•3TG between components 120 and 1288.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
If the fault is still present, contact the Techline.
EDC16C36_V44_DF232/EDC16C36_V4C_DF232/EDC16C36_V48_DF232/EDC16C36_V50_DF232/EDC16C36_V54_DF232/
EDC16C36_V58_DF232EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58

13B-203V9 MR-372-J84-13B450$120.mif
13B
Tool status Diagnostic tool title
ET001+ After ignition computer feed
ET003Engine immobiliser
ET004Air conditioning authorisation
ET007Pre-postheating control
ET014Fan assembly 1 check
ET015Monitor cooling fan 2
ET038Engine
ET039Brake pedal
ET040Clutch pedal
ET042Cruise control/speed limiter
ET076Starting
ET077Impact detected
ET079Air conditioning present
ET104Injector code use
ET120Pre-postheating signal
ET143Low speed fan assembly relay control
ET144High-speed fan assembly relay control
ET205Heating element No. 1 relay control
ET206Heating element No. 2 relay control
ET207heating element No. 3 relay control
ET238Synchronisation
ET300Richness regulation
ET341Immobiliser code programmed
ET405Clutch pedal switch
ET415Deactivation of cruise control/speed limiter
ET651EGR programming cut-off
ET703Cruise control/speed limiter buttons
ET704Brakecontact No. 1
ET705Brakecontact No. 2
DIESEL INJECTION
Fault finding – Status summary table
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58

13B-208V9 MR-372-J84-13B450$131.mif
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET004AIR CONDITIONING AUTHORISATION
STATUS DEFINITIONYES: This status indicates that the air conditioning is active.
NO: This status indicates that the air conditioning is inactive.
NOTESSpecial notes:
Only perform these tests if the statuses do not correspond with the system
programming functions.
Conformity check with engine stopped and ignition on, or engine running, and engine coolant temperature
> 80°C
YES
or
NOIf the air conditioning is authorised or the compressor actuated (see 62A, Air
conditioning).
EDC16C36_V44_ET004/EDC16C36_V4C_ET004/EDC16C36_V48_ET004/EDC16C36_V50_ET004/EDC16C36_V54_ET004/
EDC16C36_V58_ET004
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition and carry out a road test followed by a test 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 statuses13B
ET004
CONTINUED
Sensor electrical conformity
YESThe air conditioning authorisation only changes to YES if:
– the air conditioning request has been made by the driver (air conditioning switch in
AC or AUTO position with minimum ventilation),
– the engine is not under full load,
– the air conditioning system is not faulty.
NOStatus ET004 remains NO under the following conditions:
– Vehicle stopped with the ignition on,
– faults present in the air conditioning circuit,
– no air conditioning request made by the driver,
– engine under full load.
If status ET004 remains NO then the air conditioning should be authorised. Check:
– that the air conditioning compressor starts correctly,
– the air conditioning system supply fuses,
– the presence of refrigerant in the air conditioning circuit,
If the fault is still present, check the air conditioning computer faults (see 62B, Air
conditioning).
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition and carry out a road test followed by a test with the diagnostic
tool.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58