2011 RENAULT SCENIC catalytic converter

13B-9
MR-372-J84-13B050$117.mif
V17
13B
DIESEL INJECTION
Fault finding – List and location of components
High pressure pump:
The high pressure pump is located upstream of the common rail.
Rail pressure sensor:
The sensor is fitted to the common rail.
Rail pressure regulator:
The regulator is fitted on the high pressure pump.
Fuel flow regulator:
The regulator is fitted on the high pressure pump.
Piezoelectric injectors:
The injectors are fitted on the cylinder head after the common rail.
Vacuum pump:
The vacuum pump is fitted at the end of the camshaft.
Control solenoid valve:
The solenoid valve is located on the turbocharger.
Turbocharger:
The turbocharger is located after the exhaust manifold.
Intake air pressure sensor:
The sensor is integrated into the injection computer.
Turbocharger pressure sensor:
The turbocharger pressure sensor is located on the air circuit between the turbocharger and the damper valve.
Air mass flow meter:
The air mass flow meter is located at the air circuit inlet and integrates the air temperature sensor.
EGR valve:
The EGR valve is located between the inlet manifold and the exhaust manifold.
EGR position sensor:
The sensor is integrated into the EGR valve.
Damper valve:
The damper valve is located before the inlet manifold (Vdiag 44, 45, 48, 49 and 4D only).
Particle filter:
The filter is located on the exhaust pipe after the catalytic converter.
TDC sensor:
The sensor is located on the flywheel.
Camshaft sensor:
The sensor is located at the end of the camshaft.
Electric coolant pump:
The electric coolant pump is located between the heating elements and the turbocharger (only on vehicles equipped
with a particle filter).
Refrigerant pressure sensor:
The sensor is located on the coolant circuit.
MR-372-J84-13B050$117.mif
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2

13B-10
MR-372-J84-13B050$117.mif
V17
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2DIESEL INJECTION
Fault finding – List and location of components13B
Heating elements:
The heating elements are located in the cooling circuit before the additional coolant pump which cools the
turbocharger (Vdiag 45, 49 and 4D only).
Coolant temperature sensor:
The sensor is located on the cylinder head near the engine water chamber.
Air temperature sensor:
The air temperature sensor is located at the air circuit inlet, integrated into the air flowmeter.
Turbocharging pressure sensor solenoid valve:
The solenoid valve is located on the turbocharger.
Catalytic converter:
The catalytic converter is located upstream of the exhaust system and downstream of the turbocharger.
Fuel temperature sensor:
The sensor is located near the injection pump and injector return.
Catalytic converter downstream temperature sensor:
The sensor is located after the catalytic converter.
Turbine upstream temperature sensor:
This sensor is located between the exhaust pipe and the turbocharger.
Cruise control/speed limiter on/off switch:
This switch is located in the passenger compartment to the left of the steering wheel near the lighting dimmer.
Water in diesel fuel sensor (optional):
This sensor is located in the diesel filter.
Fan unit relay:
The relay is located on the cooling radiator.
Accelerator potentiometer:
The potentiometer is located on the accelerator pedal.
Brake pedal switch:
The switch is located on the brake pedal.
Clutch pedal switch:
The switch is located on the clutch pedal.
Heater plugs:
The heater plugs are located on the cylinder head.
Particle filter injector:
The injector is located between the particle filter injector fuel pump and the exhaust pipe. (Vdiag 45, 49 and 4D only)
Electric fuel pump:
The pump is located between the tank and the particle filter injector fuel filter. (Vdiag 45, 49 and 4D only)

13B-12
MR-372-J84-13B050$156.mif
V17
13B
DIESEL INJECTION
Fault finding – Operating diagram
1 Flowmeter
2 Air temperature sensor (integrated into the
flowmeter)
3 Turbocharging pressure sensor
4 Air flap
5 Direct current EGR valve
6 Variable geometry turbocharger solenoid
valve (VGT)
7 Flow regulator
8 Pressure regulator
9 Rail pressure sensor
10 Fuel temperature sensor
11 Heater plugs
12 Coolant temperature sensor
13 TDC sensor
14 Camshaft sensor
15 Atmospheric pressure sensor16 Freon pressure sensor
17 Accelerator pedal
18 Clutch switch
19 Brake switch
20 Turbine upstream temperature sensor
21 Catalytic converter downstream temperature sensor
22 Particle filter upstream temperature sensor (SID 304)
23 Particle filter downstream temperature sensor (SID 304)
24 Particle filter differential pressure sensor (SID 304)
25 Particle filter injector fuel pump (SID 304)
26 Particle filter injector (SID 304)
27 Electric coolant pump (SID 304)
28 Heating elements (SID 304)
29 Multiplex line network (multiplexing)
30 Water in diesel fuel sensor (optional)
MR-372-J84-13B050$156.mif
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2

13B-13
MR-372-J84-13B050$195.mif
V17
13B
DIESEL INJECTION
Fault finding – Function
SYSTEM FLOWCHART
The high pressure injection system is designed to deliver a precise quantity of diesel fuel to the engine at a set
moment.
The Siemens VDO piezo Common Rail system used on the K9K Step 2 engine is a second generation Common Rail
injection system. Fuel pressure in the rail can reach a maximum of 1650 bar.
The Siemens VDO piezo Common Rail system uses injectors which are controlled by piezoelectric actuators.
The fuel is pressurised by means of a high pressure pump then sent to a rail which supplies the four injectors.
The system includes two subsystems, which have different fuel pressure levels:
●the low pressure system which includes the tank, diesel fuel filter, internal fuel transfer pump and injector
return pipes,
●the high pressure system which includes the high pressure pump, rail, injectors and high pressure pipes.
There are a number of sensors and regulating actuators for controlling and monitoring the entire system.
It is fitted with a 112- track (or 128- track for Kangoo II) SIEMENS computer (SID 301 and SID 304).
The system comprises:
– a priming bulb,
– a diesel filter,
– a high pressure pump (HPP) with a fuel pressure solenoid valve (PCV), a fuel flow solenoid valve (VCV) and an
internal fuel transfer pump (ITP, low pressure pump),
– an injector rail,
– a rail pressure sensor,
– four piezoelectric injectors,
– a fuel temperature sensor,
– a coolant temperature sensor,
– a camshaft sensor,
– a TDC sensor,
– a turbocharger pressure sensor,
– an exhaust gas recirculation solenoid valve with integrated position sensor (EGR),
– an accelerator pedal potentiometer,
– an atmospheric pressure sensor integrated into the injection computer,
– an air mass flowmeter with integrated air temperature sensor,
– an air damper valve (Vdiag 44, 45, 48, 49 and 4D only),
– a temperature sensor upstream of the turbine,
– an antipollution system:
●a temperature sensor upstream of the particle filter (Vdiag 45, 49, 4D only),
●a temperature sensor downstream of the particle filter (Vdiag 45, 49, 4D only),
●a particle filter differential pressure sensor (Vdiag 45, 49, 4D only),
●a particle filter injector (Vdiag 45, 49, 4D only),
●a particle filter (Vdiag 45, 49, 4D only),
– a temperature sensor downstream of the catalytic converter,
– an electric fuel pump,
– an electric coolant pump (Vdiag 45, 49, 4D only),
– four heating elements and their control unit (Vdiag 45, 49, 4D only),
– four heater plugs,
– a water in the fuel detection sensor (optional).
MR-372-J84-13B050$195.mif
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2

13B-20
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
The exhaust system is fitted with an exhaust gas treatment system consisting of (in order):
●A shell casing containing an oxidation catalytic converter to treat hydrocarbons and carbon monoxide, the volume
and positioning of which is identical to K9K Step 2 without a particle filter.
●A fuel injector supplied by a second fuel circuit which is independent of the main fuel circuit.
●A second casing containing an oxidation catalytic converter and a particle filter positioned under the vehicle floor.
EXHAUST GAS TREATMENT
Operating principle
Regeneration consists of burning the particles accumulated in the filter. When oxygen is present, regeneration
by particle combustion occurs naturally when the exhaust gas temperature reaches 570°C.
This temperature is very different to the temperatures observed in the normal operating range of a common rail
engine. In town, the engine does not produce much heat and the exhaust gas temperature varies between 250°C
and 300°C. Whatever the driving conditions may be, a particle filter regeneration program should be developed
without an effect on driving pleasure.
A differential pressure sensor monitors the status of the particle filter (particle weight) and triggers regeneration.
Regeneration is performed by specific injection regulation (phased injection and post-injection) which brings the
temperature of the exhaust gas to between 550 °C and 650 °C at the particle filter inlet.
Regeneration lasts at least 30 minutes and is carried out every 165 miles (275 km) (minimum interval between 2
successful regenerations).
Certain types of customer driving (mainly urban driving) may cause the particle filter to accumulate a significant
quantity of particles. This amount of soot may impair customer experience: poor vehicle performance due to
excessive pressure in the exhaust system.
This driving type may cause the speed request (Vdiag 45 and 49 only) warning light to come on when the particle
weight reaches 30.8 g or after 10 regeneration failures or if the distance between each regeneration reaches
111 0 m il es (1850 km). The customer is asked to drive in a certain way (see vehicle handbook).
However, this warning may be misinterpreted or taken to be a vehicle fault. The vehicle must not be returned to the
garage after such a warning; if the vehicle is taken back to the garage and accepted for repair, the mechanic should
carry out After-Sales regeneration.
PARTICLE FILTER INJECTOR PROGRAM
The particle filter injector is clamped in place inside a cooling cylinder head, which itself is attached to the output
cone of the first oxidation catalytic converter. The coolant flows into the cylinder head via a take-off pipe on the
cooling system and leaves via a hose connected to the turbocharger.
This injector is used to replace post injection in areas of low load and low flow.
This injector is supplied by an additional electric fuel pump.
The electric fuel pump is:
●controlled by a relay during each regeneration phase or purge,
●integrated into the suction module submerged in the tank,
●connected to the second fuel circuit.

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-24
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
Cruise control/speed limiter on/off switch:
This switch turns the cruise control/speed limiter on or off.
Water in diesel fuel sensor (optional):
This sensor indicates if water is present in the diesel.
Fan unit relay:
This relay actuates the motor-driven fan assemblies when a temperature threshold has been exceeded.
Accelerator potentiometer:
The accelerator potentiometer informs the computer about the position of the accelerator pedal (engine load).
Brake pedal switch:
The brake pedal switch informs the computer about the pedal status.
Clutch pedal switch:
The clutch pedal switch informs the computer about the pedal status.
Particle filter injector:
The particle filter injector is a low pressure injector. This injector allows the temperature of the second catalytic
converter to be raised to assist with regeneration of the particle filter (Vdiag 45, 49, 4D only).
Only on Kangoo 2: an evaporator plate is present at the particle filter injector outlet, at the level of the bracket
between the exhaust pipe and the catalytic converter.
Heating elements:
The heating elements heat the engine coolant to enhance user comfort (Vdiag 45, 49, 4D only).
Heater plugs:
The heater plugs preheat the combustion chamber so that the explosion of the fuel mixture occurs under the best
conditions to start the engine.

13B-34
MR-372-J84-13B050$351.mif
V17
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2DIESEL INJECTION
Fault finding – Fault summary table13B
Tool
faultDiagnostic tool titleAssociated
DTCLevel 1 fault warning
light illuminatedLevel 2 fault warning
light illuminatedOBD warning
light illuminated
DF886Presence of water in
the diesel fuel2269 - - -
DF887Brake/accelerator
pedal positions2299 - 1.DEF -
DF889Engine protection 2610 - - -
DF953Particle filter absent 2002 - - 1.DEF
DF991Particle filter injector
control circuit 1205 CO/CC.0/CC.1 - CO/CC.0/CC.1
DF999Particle filter
downstream temp.
sensor circuit1544CC.0/CO.1/ 1.DEF/
2.DEF/ 3.DEF--
DF1000Particle filter
upstream temp.
sensor circuit242ACC.0/CO.1/ 1.DEF/
2.DEF/ 3.DEF-CC.0/CO.1/
1.DEF/2.DEF/
3.DEF
DF1001Particle filter
upstream
temperature
regulation 242B 1.DEF/2.DEF - -
DF1002Static regeneration 2458 1.DEF - -
DF1003Particle filter
differential pressure
sensor circuit 2452 CO.0/CC.1/1.DEF -CO.0/CC.1/
1.DEF
DF1004Electric fuel pump
relay control circuit 2632 CO/CC.0/CC.1 - -
DF1005Heating element
control unit fault
finding 1 connection 1644 1.DEF - -
DF1007Catalytic converter 1
downstream
temperature sensor
circuit 2031CC.0/CO.1/ 1.DEF/
2.DEF/ 3.DEF--
DF1008Turbine upstream
temperature
regulation 2080 1.DEF - -
DF1009Catalytic converter 1
downstream
temperature
regulation 2084 1.DEF/2.DEF - -
DF1070Cold loop 0534 - - -