sensor RENAULT TWINGO 2009 2.G Electrical Equipment - Petrol Injection User Guide

17B-21V7 MR-413-X44-17B000$050.mif
17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
RV* / LV*: Cruise control/Speed Limiter1 - Injection computer 16 - Upstream sensor signal
2 - RV* / LV* buttons 17 - Ignition command
3 - Multiplex network 18 - Bleed canister command
4 - Turbocharger 19 - Fuel pump command
5 - Motorised throttle 20 - Downstream sensor signal
6 - Manifold pressure 21 - ESP computer
7 - Injector command 22 - Rev counter computer
8 - Clutch Pedal 23 - ABS computer
9 - Brake pedal 24 - Instrument panel computer
10 - Accelerator pedal 25 - Sequential gearbox computer
11 - Refrigerant fluid pressure 26 - AIRBAG computer
12 - Air conditioning compressor command 27 - Vehicle speed sensor computer
13 - Engine cooling fan assembly command 28 - Air conditioning computer
14 - Flywheel signal 29 - UCH computer
15 - Pinking signal 30 – Turbocharging pressure
PETROL INJECTION
Fault finding – Functional diagram

17B-22V7 MR-413-X44-17B000$060.mif
17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
SYSTEM OPERATION
Composition
The injection system consists of the:
–accelerator potentiometer,
–TDC sensor,
–air temperature sensor,
–inlet manifold pressure sensor,
–+ turbocharging pressure sensor,
–coolant temperature sensor,
–refrigerant pressure sensor,
–upstream oxygen sensor,
–downstream oxygen sensor,
–cruise control switch (fitted according to the vehicle equipment level),
–cruise control on/off switch (fitted according to the vehicle equipment level),
–brake light switch,
–clutch pedal switch,
–fuel vapour absorber,
–injection computer,
–motorised throttle valve,
–four injectors,
–ignition coil,
–pinking sensor.
Additional components on D4FT 780:
–Turbocharging
–Oil vapour rebreathing circuit de-icing system
–OCS - Customised oil change interval
Computer
SIEMENS type "SIM32" 112-track computer controlling the injection and the ignition. Multipoint injection in
sequential mode.
Connections with the other computers, known as "Intersystem connections":
–ESP (fitted depending on vehicle equipment level).
–Passenger Compartment Control Unit (UCH).
–Gearbox Computer: BVR sequential gearbox (if fitted to the vehicle).
–Instrument panel.
–Airbag.
–ABS (if fitted to the vehicle).
–Rev counter instrument.
–Air conditioning.
PETROL INJECTION
Fault finding – Features

17B-25V7 MR-413-X44-17B000$060.mif
PETROL INJECTION
Fault finding – Features17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
Richness
For the catalytic converter to operate correctly, adjust around richness 1.
The richness regulation controlled by the upstream sensor which ensures a richness of around 1.
The upstream sensor supplies a voltage according to the image of the average engine richness: the voltage supplied
to the computer represents a Rich-Lean signal.
For the upstream sensor to be operational very rapidly, it is heated. The heating works only when the engine is
running. It is deactivated at speeds above 84 mph (140 km/h) or when the engine is under load.
The downstream sensor is also heated. The command does not activate immediately after starting the engine. It is
activated when the engine is running and has reached its operating temperature. The downstream heating sensor is
deactivated at speeds above 84 mph (140 km/h) or when the engine is under load.
Torque management
The torque structure is the system for managing engine torque. The torque structure is required for certain functions
such as the electronic stability program (ESP) or sequential gearbox (BVR).
Each computer (ESP, BVR) sends a request for torque via the multiplex network to the injection computer. This
intervenes between the torque requests received and the driver's requests (made via the pedal or the cruise control/
speed limiter function). The result of this intervention is the torque setpoint to be applied. Using the torque reference
value, the structure calculates the throttle position reference value and the ignition advance and if the turbocharging
function is present, calculates the turbocharging solenoid valve reference value.
Engine coolant temperature management
Engine cooling is performed by one or two fan assemblies (depending on the vehicle equipment). The injection
computer requests the UCH to actuate them via the multiplex network.
To provide cooling when the engine is running, activation of fan assembly 1 is requested if the coolant temperature
exceeds 99ËšC and is deactivated when the temperature drops below 96ËšC.
Fan unit 2 starts when the coolant temperature exceeds 102ËšC and stops when it falls below 99ËšC.
With the engine off, only GMV1 may be activated to provide the anti-percolation function (if engine is stopped when
very hot). The anti-percolation function is active with the ignition off for a determined period. During this time, fan
assembly 1 is activated if the coolant temperature exceeds 100ËšC and is deactivated when the temperature drops
below 95ËšC.
If the engine temperature exceeds the warning threshold of 118ËšC, the injection computer directly commands the
coolant temperature warning light to illuminate or requests this action from the instrument panel computer via the
multiplex network, until the coolant temperature drops back below 115ËšC.
As well as managing the engine, the injection computer handles cooling requirements for the air conditioning and
sequential gearbox functions.

17B-26V7 MR-413-X44-17B000$060.mif
PETROL INJECTION
Fault finding – Features17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
Air conditioning function
The SIM32 computer manages a "Cold Loop" type air conditioning system:
–request for air conditioning by logical link,
–acquisition of pressure in the air conditioning circuit,
–vehicle speed
–air conditioning compressor control,
–fan unit control for the requirements of this function.
The injection computer reconstitutes the power absorbed by the air conditioning compressor and fast idle speed
requests by using the pressure acquired in the air conditioning circuit.
These signals are necessary for adapting the engine management (idling speed regulation, air flow correction, etc.),
for several reasons:
–air conditioning compressor efficiency,
–more engine ruggedness due to torque hesitation caused by the compressor clutching and declutching,
–helping the alternator.
Fan unit 1 and/or 2 requests are reconstituted according to the pressure in the air conditioning circuit and the vehicle
speed. In summary, there are more fan unit requests when the speed is low and the pressure is high.
OCS - Customised Oil Change Interval (does not concern Vdiag 44 and 4C).
This program takes into account the driving style of the user to warn him of the need for an oil service. It counts the
number of revs per minute since the last oil service, corrected by a factor dependent on the oil temperature. When
this number of revs per minute exceeds a certain threshold, the customer is alerted by a message on the instrument
panel informing him that an oil service is required.
After the oil service, the user must reset the oil service interval on the instrument panel.
To find out if the engine concerned uses this programming, consult ET840 Customised Oil Change Interval.
OBD
The OBD programs are as follows:
–catalytic converter fault finding,
–upstream sensor operational fault finding,
–misfire fault finding,
–fuel supply system fault finding.
The misfiring and fuel supply system fault finding is performed continuously. The operational fault finding for the
upstream sensor and the catalytic converter can be only be carried out once per journey, and can never take place
at the same time.

17B-28V7 MR-413-X44-17B000$070.mif
17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
1. OPERATING SAFETY
Activation of the warning lights
The SIM32 injection system manages the illumination of three warning lights according to the severity of the faults
detected, to inform the customer and to assist with fault finding.
The injection computer manages the activation of the warning lights on the instrument panel. These warning lights
illuminate during the starting phase and in the event of an injection fault or engine overheating.
The warning light activation commands are sent to the instrument panel.
Warning light illumination principle
When the ignition is switched on, the OBD (On Board Diagnostic) warning light is illuminated for approximately
3 seconds and is then extinguished.
If there is an injection fault (severity level 1), the SERVICE warning light is illuminated.
It indicates a reduced level of operation and a limited safety level.
The user must carry out repairs as soon as possible:
–motorised throttle valve,
–accelerator pedal potentiometer,
–inlet manifold pressure sensor,
–computer,
–actuator feed,
–the computer power supply,
–turbocharger pressure sensor (for D4FT 780).
For faults requiring the driver to stop the engine quickly, the severity level 2 warning light is illuminated.
If a fault causing excessive exhaust gas pollution is detected, the orange OBD warning light engine symbol is
illuminated:
–the light flashes if the fault could lead to a risk of destroying catalytic converter (destructive engine misfire). If this
happens, the vehicle must be stopped immediately.
–the light is permanently illuminated if the emission control standards are not met (pollutant engine misfire,
catalytic converter fault, oxygen sensor fault, inconsistency between the oxygen sensors and a fuel vapour
absorber fault).
Mileage travelled with fault
The parameter PR106 Mileage counter fault warning light illuminated displays the mileage covered and
illuminates one of the injection fault warning lights: fault severity level 1 (amber) and 2 (red). The parameter
PR105 Mileage counter OBD fault warning light illuminated displays the mileage covered and illuminates the
OBD warning light.
This counter is reset to 0 using the diagnostic tool via the command RZ001 Fault memory.
PETROL INJECTION
Fault finding – Role of components

17B-30V7 MR-413-X44-17B000$070.mif
PETROL INJECTION
Fault finding – Role of components17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
Injection computer:
The injection computer manages the entire system.
Its role is to define the engine optimum operating mode and to inform the driver (via the instrument panel, information
display, and buzzer) and to communicate with the other computers.
Fuel vapour recirculation solenoid valve:
The fuel vapour absorber works like a ''sponge'' for petrol vapours and enables gases coming from the tank to be
collected.
Upstream oxygen sensor:
This sensor measures the amount of oxygen in the exhaust gas.
The voltage supplied to the computer by the sensor indicates the amount of oxygen in the exhaust gas - a rich
mixture or a lean mixture - and a program is adopted accordingly.
Downstream oxygen sensor:
This sensor measures the amount of oxygen in the exhaust gas.
The voltage supplied to the computer by the sensor indicates the amount of oxygen in the exhaust gas - a rich
mixture or a lean mixture - and a program is adopted accordingly.
Pinking sensor:
The sensor detects engine knocking and sends its electrical signal to the injection computer.
Oil pressure sensor:
This sensor measures the engine oil pressure.
Turbocharger:
The turbocharger is used to supply the engine with more air.
Turbocharger pressure sensor:
This sensor indicates the pressure at the turbocharger air cooler outlet before the damper valve.
Ignition coil:
This acts both as an energy storage battery and a transformer. It generates high voltage ignition pulses and the
energy required to ignite the mixture.
Motorised throttle valve:
The motorised throttle valve supplies the engine with varying mixtures of fuel and air according to the load required.
This electronic control detects the position of the accelerator using a sensor (potentiometer) to inject the mixture.

17B-31V7 MR-413-X44-17B000$070.mif
PETROL INJECTION
Fault finding – Role of components17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
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.
Refrigerant pressure sensor:
Its role is to measure the refrigerant pressure in the air conditioning circuit.
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.
Catalytic converter:
The role of the catalytic converter is to convert pollutant gases into harmless gases.
Cruise control/speed limiter on/off switch:
This switch is used to turn the cruise control/speed limiter on or off.
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 of the position of the accelerator pedal (engine load).
Clutch pedal switch:
The clutch pedal switch informs the computer of the clutch pedal status.
Inlet air temperature sensor:
Its role is to measure the air temperature in the inlet circuit.
Pinking sensor:
Its role is to check for pinking in the combustion chamber.
Oil level sensor:
This sensor measures the level of oil in the engine and sends this information to the computer.

17B-34V7 MR-413-X44-17B000$080.mif
PETROL INJECTION
Fault finding – Defect modes17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
Defect modes (continued)
Type 1Type 2Type 3Type 4Type 5Type 6
DF004: Turbocharging pressure
sensor circuit1.DEF
2.DEF
3.DEF1.DEF
2.DEF
3.DEF
DF011: Sensor supply voltage
no.1CC.1
CC.0CC.1
CC.0
DF012: Sensor supply voltage
no.2CC.1
CC.0CC.1
CC.0
DF038: Computer1.DEF1.DEF1.DEF1.DEF1.DEF
DF046: Battery voltage1.DEF
(
undervoltage)
1.DEF
(undervoltage)
DF054: Turbocharging solenoid
valve control circuit CO/ CC.0
CC.1/1.DEF
DF079: Motorised throttle valve
servo system2.DEF
6.DEF2.DEF
6.DEF3.DEF
4.DEF
DF089: Inlet manifold pressure
sensor circuitCO
CC.1
CC.0
DF095: Throttle potentiometer
circuit gang 1CO CC.1
CC.0
1.DEF
2.DEF
DF096: Throttle potentiometer
circuit gang 2CO
CC.1
CC.0
DF196: Pedal sensor circuit
gang 1CC.1
CC.0CC.1
CC.0
1.DEF
DF198: Pedal sensor circuit
gang 2CC.1
CC.0CC.1
CC.0
DF508: Motorised throttle controlCC.1
CC.0CC.1
CC.0
DF569: Turbocharging circuit1.DEF
2.DEF
3.DEF1.DEF
2.DEF
3.DEF1.DEF
2.DEF
3.DEF

17B-36V7 MR-413-X44-17B000$090.mif
PETROL INJECTION
Fault finding – Replacement of components17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
PROCEDURE:
Before any computer programming, only Vdiag 54 and 50 (see previous page):
–Run the command SC003 'Save computer data.
Any time the computer has been programmed
–Switch the ignition off and then on again.
–Select the UCH domain using the diagnostic tool.
–In repair mode, run the command SC017 "Programming the injection immobiliser code" and follow the
instructions given by the diagnostic tool.
–Switch the ignition off and then on again.
–Select the INJECTION subgroup and check status ET341 Immobiliser code programmed.
–Run the command SC001 ''Write saved data" Vdiag 54 only.
IF ET341 = YES
–Start and then stop the engine (to initialise the computer) and wait 30 seconds.
–Switch the ignition back on and use the diagnostic tool to carry out the following steps:
–Run the command VP010 Write VIN.
–After injection system programming, stored faults may appear on other computers. Clear the memory of
these computers.
IF ET341: NO
–Re-run command SC017 and follow the instructions given by the diagnostic tool.
2. COMPUTER REPROGRAMMING OPERATIONS
When replacing or removing the TDC sensor, program the engine flywheel ring (see Configurations and
programming).
3. REPLACING THE MOTORISED THROTTLE VALVE
When replacing the throttle valve, program the throttle stops (see Configurations and programming).
4. REPLACING THE MOTORISED THROTTLE VALVE
When replacing the throttle valve, program the throttle stops (see Configurations and programming). IMPORTANT:
AFTER A PROGRAMMING OPERATION, DO NOT DISCONNECT THE BATTERY FOR AT LEAST
30 MINUTES (to carry out other work on the vehicle).
IMPORTANT:
Never drive the vehicle without having programmed the throttle stops.

17B-37V7 MR-413-X44-17B000$100.mif
17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
1. Configuration
Computer configuration by automatic detection.
The computer automatically configures itself according to the sensors present and vehicle options it detects.
Configuration readingDescription
LC009
Air conditioning
With
None
LC010
Electronic stability program
With
None
LC005
Gearbox type
Sequential
Manual
Automatic
LC003
Upstream oxygen sensor
With
None
LC004
Downstream oxygen sensor
With
None
LC001
Vehicle speed connection type
Multiplex
Wire
LC024
OBD warning light management
With
None
LC120
Cruise control
With
None
LC121
Speed limiter
With
None
LC021
Catalytic converter diag. OBD sequencer
With
None
LC023
Sensor diag. OBD sequencer
With
None
PETROL INJECTION
Fault finding – Configurations