2011 RENAULT SCENIC air conditioning

13B-17
MR-372-J84-13B050$195.mif
V17
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2DIESEL INJECTION
Fault finding – Function13B
AIR SUPPLY
Measurement of the fresh air flow
The flow of fresh air entering the engine is measured by a flow sensor (ratiometric hot-wire sensor).
A fresh air temperature sensor is integrated into the air flowmeter.
EGR valve control
The EGR (exhaust gas recirculation) system consists of a direct current EGR valve fitted with a valve position
sensor. The EGR valve is controlled in a closed-loop via the position sensor. Up to a certain rate, exhaust gas
recirculation enables nitrogen oxide (NOx) emissions to be reduced significantly.
Turbocharger control
The turbocharger system consists of a solenoid valve connected to the vacuum pump circuit, which controls the
vanes via a diaphragm to create an overpressure or a vacuum in the fresh air inlet circuit (the overpressure can
reach 2.6 bar).
Damper valve control (for Vdiag 44, 45, 48, 49 and 4D only)
By default the valve is open when in the rest position and is actuated only when the engine is switched off; this has
a damping effect and helps to stop the engine.
It also controls the flow of fresh air during regeneration.
IDLE SPEED MANAGEMENT
The injection computer regulates the idle speed according to the idle speed setpoint which it calculates.
The idle speed setpoint is dependent on:
– the coolant temperature,
– the emission control programs,
– air conditioning requirements,
– the gear ratio engaged (automatic or sequential gearbox),
– the electrical consumers,
– battery voltage.
ENGINE TORQUE MANAGEMENT
The torque structure is the system which translates the driver's request into a torque supplied by the engine. Certain
functions such as the electronic stability program (ESP), the automatic gearbox (BVA) or the sequential gearbox
(BVR), if fitted to the vehicle, use this information.
Each inter-system (ESP, automatic gearbox, sequential gearbox) sends the injection computer a torque request via
the multiplex network.
The injection computer arbitrates between the inter-system torque requests and the driver request (depressing the
accelerator pedal or setting the cruise control/speed limiter function). The result of the arbitration gives the torque
setpoint.
From this torque set point, the computer determines the quantity of fuel to be injected (injection duration and number
of injection processes) and the amount of air required (turbocharging pressure and EGR valve rate) so that the
engine is able to provide the torque required in the best possible conditions (in terms of smooth running
performance, pollutant emissions, etc.).

13B-18
MR-372-J84-13B050$195.mif
V17
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2DIESEL INJECTION
Fault finding – Function13B
MANAGEMENT OF PRE/POSTHEATING
Pre-postheating management involves controlling the heater plugs and the heater plugs indicator light on the
instrument panel (via the multiplex network). The heater plugs are activated by a preheating unit and the power is
provided by the battery.
When the ignition is switched on, the preheating period is activated; the indicator light comes on for a period
dependent on the battery voltage, atmospheric pressure and coolant temperature.
When the coolant temperature is below a certain threshold, a postheating function enables combustion stability,
and thereby engine operation, to be improved (reduction in unburned fuel and pollutant emissions).
MANAGEMENT OF ENGINE COOLANT TEMPERATURE
Engine cooling is guaranteed by a 2-speed fan assembly (GMV) (slow: GMV1 and fast: GMV2).
The injection computer requests the UPC to actuate them via the multiplex network.
To provide cooling:
– Engine running:
GMV1 is activated when the coolant temperature exceeds 96°C and is deactivated when it drops below 94°C.
GMV2 is activated when the coolant temperature exceeds 104°C and is deactivated when it drops below 102°C.
If the engine coolant temperature exceeds the warning threshold of 120°C, the injection computer requests the
instrument panel computer, via the multiplex network, to switch on the coolant temperature warning light. The
warning stops if the coolant temperature drops below 117 ° C.
If the engine coolant temperature exceeds the threshold of 11 5 ° C, the injection computer requests the UPC
computer, via the multiplex network, to switch off the air conditioning compressor so as to reduce the load on the
engine and attempt to limit its rise in temperature. The cut-off request is cancelled if the coolant temperature drops
below 110°C.
If a fault in the coolant temperature sensor circuit is detected, the injection computer requests that the coolant
temperature warning light is lit and that GMV2 is activated.
In addition to engine management, the injection computer centralises the cooling requirements for the air
conditioning and automatic gearbox/sequential gearbox functions (if fitted to the vehicle).
OTHER HOSTED FUNCTIONS
The other functions hosted by the computer are:
– Multiplex line.
– ADAC (Trip Computer).
– Trip Computer Display.
– Engine immobiliser.
– Airbag.
– Engine stop management.
– Starter management.
– Air conditioning.
– Cruise control/speed limiter.

13B-19
MR-372-J84-13B050$195.mif
V17
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2DIESEL INJECTION
Fault finding – Function13B
INTERSYSTEM EXCHANGES
The inter-system connections concerning the particular requirements of engine management are as follows:
●Request for injection computer to switch on the OBD warning light to warn of an OBD related pollution fault.
●Request to switch on the Level 1 warning light to warn of an operational safety fault with the engine
management system which may restrict performance.
●Request to switch on the Level 2 warning light to warn of an operational safety fault with the engine
management system which may result in the engine stopping.
●Request to switch on the Particle Filter and Service warning light to warn of an operational safety fault of the
particle filter system which may result in reduced performance or engine stoppage.
●Request to switch on the Engine overheating warning light to warn of an engine overheating fault or a fault
in the coolant temperature sensor.
●Request to switch on the Particle filter warning light to warn the driver that the particle filter is loaded with
particles (weight of soot more than 30.8 g). As soon as possible, the driver must drive at a speed of more than
25 mph (40 km/h) for 2 minutes to activate regeneration.
The driver must maintain a speed of more than 25 mph (40 km/h) until the particle filter warning light goes out
(Vdiag 45 and 49 only).
●Request to start the fan assembly for engine cooling and also for air conditioning purposes,
●Request to switch off the air conditioning compressor for engine programming requirements such as pulling
away, performance, anti-stalling, overspeed, etc.
●Request to switch off electrical consumers (passenger compartment heating resistor (if fitted), heated rear
screen, etc.) for engine operation purposes such as: pulling away, performance, anti-stalling,
overspeed, etc.
●Formulation of requests to engage electrical consumers and limit power as a function of rail conditions.
This last function is made possible with the introduction of alternator control. Formulation of requests enables
the smooth running of the engine to be improved in the critical operating phases, mainly at idle speed and
when pulling away. These requests pass via the multiplex network to the Protection and Switching Unit where
they are converted before being sent to the alternator.
In comparison to the version without a particle filter (K9K Step 2), the K9K Step 2 particle filter technical
specifications also include:
●Four temperature sensors spread along the exhaust system.
●One differential pressure sensor.
●One fuel injector with a dedicated electric fuel pump.
●An electric water pump (in addition to the mechanical pump) controlled by a relay to cool the turbocharger when
the engine is stopped (only for Clio III, Modus and Mégane II/Scénic II).
●Four heating elements and their control unit.
Oil Control System (OCS) (except Vdiag 44, 45 and 49)
This program takes into account the driving style of the user to warn him of the need for an oil change. This program
counts the number of miles since the last oil change, corrected by a factor which depends on the oil temperature.
When the number of miles exceeds a threshold, the customer is warned by a message to the instrument panel that
the drain must be performed.
After the oil change, the user must reset the oil change interval on the instrument panel.

13B-23
MR-372-J84-13B050$195.mif
V17
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2DIESEL INJECTION
Fault finding – Function13B
TDC sensor:
The angular position is measured using a magneto-inductive sensor triggered by machined teeth on the flywheel.
This sensor gives the engine speed and the position of the crankshaft for injection.
Camshaft sensor:
This sensor gives a signal to perform the injection cycle. When the piston of cylinder 1 is at top dead centre, either at
the end of the compression stroke or at the end of the exhaust stroke, the camshaft sensor enables a distinction to
be made between these two states.
Electric coolant pump:
The electric coolant pump is activated when the coolant temperature has reached a significant temperature
threshold when the engine has stopped.
The role of the electric water pump is to cool the turbocharger when the engine stops (Vdiag 45, 49 only).
Refrigerant pressure sensor:
The role of the sensor is to measure the refrigerant fluid pressure in the air conditioning circuit.
Electric fuel pump:
The pump is controlled by a relay during each regeneration or purge phase; it is submerged in the tank and is
connected to the secondary fuel circuit only.
Coolant temperature sensor:
The engine coolant temperature sensor informs the computer about the engine coolant temperature.
Air temperature sensor:
The air temperature sensor is fitted in the inlet manifold and informs the computer about the temperature of the air
sucked up by the engine.
Turbocharging pressure sensor solenoid valve:
This solenoid valve operates the turbocharger wastegate pneumatic circuit to lower the turbocharging pressure.
Catalytic converter:
Its role is to convert pollutant gases into harmless gases.
Catalytic converter downstream temperature sensor:
This sensor gives the temperature of the exhaust gas at the catalytic converter output.
Turbine upstream temperature sensor:
This sensor gives the temperature of the exhaust gas at the turbine inlet.
Particle filter downstream temperature sensor:
This sensor gives the exhaust gas temperature at the particle filter outlet (Vdiag 45, 49, 4D only).
Particle filter upstream temperature sensor:
This sensor gives the exhaust gas temperature at the particle filter inlet (Vdiag 45, 49, 4D only).
Particle filter differential pressure sensor:
A differential pressure sensor monitors the status of the particle filter (particle weight) and triggers regeneration.
The role of the sensor is to inform the computer of the pressure difference between particle filter inlet and outlet
(Vdiag 45, 49, 4D only).

13B-26
MR-372-J84-13B050$273.mif
V17
13B
DIESEL INJECTION
Fault finding – Replacement of components
COMPUTER REPROGRAMMING OPERATIONS
The system can be reprogrammed via the diagnostic socket using the RENAULT CLIP diagnostic tool (see
Technical Note 3585A, Computer programming and reprogramming procedure).
Note:
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.
– Main switch in rest position (the computer then detects the rest position).
– Switch in Cruise control position to activate the Cruise control function.
– Switch in Speed limiter position to activate the Speed limiter function.
While the computer is being reprogrammed the fan assemblies are triggered automatically.
Before reprogramming the computer:
– Save the computer data to the diagnostic tool (engine adaptives) by performing command SC003 Save
computer data.
After any computer reprogramming operation:
– Switch the ignition off and then on again,
–Use the diagnostic tool to carry out the following procedures:
– run command RZ019 Programming reinitialisation.
– run command SC001 Write saved data to restore the engine adaptives,
– run command SC013 Enter VIN,
– start the engine (warning: the start-up phase may last up to 30 seconds),
– after injection computer reprogramming, stored faults may appear in other computers. Clear the fault memory of
these computers,
– carry out a road test followed by another check with the diagnostic tool.
DO NOT CARRY OUT ANY INJECTOR CODE WRITING ON THE SIEMENS SID304 AND 301 INJECTION
SYSTEMS.IMPORTANT
Switch on the diagnostic tool (mains or cigarette lighter supply).
Connect a battery charger.
Switch off all the electrical consumers (lights, interior lighting, air conditioning, radio CD, etc.).
Wait for the engine to cool (engine coolant temperature < 60 °C and air temperature < 50 °C).
MR-372-J84-13B050$273.mif
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4CProgram No.: B1 and B2

13B-27
MR-372-J84-13B050$273.mif
V17
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2DIESEL INJECTION
Fault finding – Replacement of components13B
If no communication is possible with the injection computer during reprogramming or programming:
●Clear the programming using command RZ019 Reinitialise programming.
●Clear any faults using command RZ001 Fault memory.
●Enter the V.I.N. using command SC013 Enter VIN code.
●Perform a powerlatch.
●Perform a detection of the cruise control - speed limiter and the air conditioning:
– Vehicle ignition on.
– Main switch in rest position (the computer then detects the rest position).
– Switch in Cruise control position to activate the Cruise control function.
– Switch in Speed limiter position to activate the Speed limiter function.
– Air conditioning in the ON position.
●For Kangoo II, program the values for fast idle speed (if equipped) and vehicle speed restriction (if equipped)
using commands SC041 Modification of commercial vehicle idle speed and SC040 Speed limiter.
●For Vdiag 45, 49 and 4D, carry out a particle filter regeneration using command SC017 Particle filter
regeneration (see Interpretation of commands).
●For Clio III, Modus, Megane II and Scenic II vehicles:
– If the configuration reading LC106 O.C.S. is" WITH" (check in the instrument panel computer), perform
an engine oil change and initialise the value of the oil service interval using the instrument panel.
●For Kangoo II:
– Change the engine oil and initialise the value of the oil change interval using the instrument panel.
IMPORTANT
The injection computer retains the immobiliser code for life.
The system has no security code.
It is forbidden to perform tests with computers borrowed from the Parts Department or from another vehicle
which must then be returned.
These computers are hard-coded.
If the injection computer is faulty, contact the Techline (and refer to the fault finding log).

13B-28
MR-372-J84-13B050$273.mif
V17
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2DIESEL INJECTION
Fault finding – Replacement of components13B
COMPUTER REPLACEMENT AND PROGRAMMING OPERATIONS
The system can be programmed via the diagnostic socket using the RENAULT CLIP diagnostic tool (see
Technical Note 3585A, Computer programming and reprogramming procedure).
While the computer is being programmed the fan assemblies are triggered automatically.
Before any replacement and programming of the computer:
– When possible, back up the old computer data (engine adaptives) in the diagnostic tool, by performing
command SC003 "Computer data backup".
After the computer has been programmed:
– Switch the ignition off and then on again.
– Use the diagnostic tool to carry out the following procedures:
– Run command RZ019 Reinitialise programming.
– Run command SC001 Write saved data to restore the engine adaptives,
– Start the engine. Important: the starting phase can last up to 30 seconds.
– Stop the engine (to initialise the computer) and wait 30 seconds.
– Switch on the ignition again and use the diagnostic tool to carry out the following steps:
– Run command SC013 Enter VIN code.
– After the injection has been programmed, stored faults may appear on other computers.
– Clear the fault memory of these computers.
– Carry out a road test followed by a complete check with the diagnostic tool.
After the computer has been programmed:
– Switch the ignition off and then on again.
– Use the diagnostic tool to carry out the following procedures:
– Use command RZ019 Reinitialise programming.
– Use command SC001 Write saved data to restore the engine adaptives.
– Select the UCH field,
– In the repair mode, perform command SC017 Programming injection immobiliser code and follow the
indications provided by the diagnostic tool (command SC017 Programming injection immobiliser code is
accessible in the menu "Secure programming").
– Switch the ignition off and then on again.
– Select the INJECTION field and check ET006 Code programmed.
If ET006 is "YES":
– Start the engine. Important: the starting phase can last up to 30 seconds.
– Stop the engine (to initialise the computer) and wait 30 seconds.
– Switch on the ignition again and use the diagnostic tool to carry out the following steps:
– Perform command SC013 Enter VIN code.
– After the injection has been programmed, stored faults may appear on other computers.
Clear the fault memory of these computers.
If ET006 is: "NO":
– Rerun command SC017 Programming injection immobiliser code and follow the instructions provided by the
diagnostic tool.
– Repeat the method described above.IMPORTANT
– Switch on the diagnostic tool (mains or cigarette lighter supply).
– Connect a battery charger.
– Switch off all the electrical consumers (lights, interior lighting, air conditioning, radio CD, etc.).
– Wait for the engine to cool (engine coolant temperature < 60 °C and air temperature < 50 °C).

13B-30
MR-372-J84-13B050$312.mif
V17
13B
DIESEL INJECTION
Fault finding – Configurations and programming
SPECIAL COMMANDS
SC001: Write saved data.
Use this command after replacing or (re)programming the computer (if the data has been saved using command
SC003).
SC003: Save computer data.
This command enables the computer operating data, the engine adaptives, to be recorded.
Use this command before replacing or (re)programming a computer.
SC013: Enter VIN.
This command permits manual entry of the vehicle's VIN into the computer.
Use this command each time the computer is replaced or (re)programmed.
SC017: Particle filter regeneration.
The regeneration command is used to burn particles which have accumulated in the filter.
Run this command when the particle filter is clogged.
SC040: Speed limiter (Kangoo II only).
This command enables the vehicle's speed to be restricted to a certain speed.
Use this command at the customer's request.
SC041: Modification of the commercial vehicle idle speed (Kangoo II only).
This command enables the idle speed for vehicles such as refrigerated vehicles, ambulances etc. to be increased or
decreased.
CONFIGURATION READING
LC005: Gearbox type.
Manual gearbox or automatic transmission/sequential gearbox
LC009: Air conditioning.
With or without.
LC065: Water in diesel fuel sensor.
With or without.
LC120: Cruise control.
With or without.
LC121: Speed limiter.
With or without.
MR-372-J84-13B050$312.mif
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2