2009 RENAULT TWINGO RS light

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 99˚C and is deactivated when the temperature drops below 96˚C.
Fan unit 2 starts when the coolant temperature exceeds 102˚C and stops when it falls below 99˚C.
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 100˚C and is deactivated when the temperature drops
below 95˚C.
If the engine temperature exceeds the warning threshold of 118˚C, 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 115˚C.
As well as managing the engine, the injection computer handles cooling requirements for the air conditioning and
sequential gearbox functions.

17B-27V7 MR-413-X44-17B000$060.mif
PETROL INJECTION
Fault finding – Features17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
OBD fault manager:
The European On Board Diagnostic (EOBD) fault manager neither replaces nor modifies the conventional
management of electrical faults. It is an additional feature to satisfy the EOBD* standard. The requirements are:
–to store EOBD* faults,
–to store the engine context when the EOBD* stored fault is detected,
–to illuminate the OBD warning light for all faults that cause the EOBD* emissions thresholds to be exceeded,
–to make the OBD warning light flash for all combustion misfire faults that damage the catalytic converter.
*EOBD:
* OCR:

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-29V7 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
3. INTERSYSTEM ENGINE FUNCTIONS
The intersystem connections relating to the particular requirements of the injection are as follows:
–The instrument panel computer requests illumination of the OBD warning light to warn of an emissions control fault.
–Requests illumination of the Severity level 1 warning light to warn of an operational safety fault related to the
injection system.
–Requests illumination of the Severity level 2 warning light to warn of an operational safety fault or engine
overheating.
–Requests activation of the fan assemblies (GMV) for engine cooling, but also for the air conditioning system and
sequential gearbox (BVR) functions.
–Request for air conditioning compressor switch-off for engine programming requirements such as starting,
performance, anti-stall, overspeed, etc.
–Passenger Compartment Heating Resistor cut-off or setting request for engine programming requirements such as
starting, performance, anti-stall, overspeed, etc.
–Request for gradual engagement of electrical consumers and to limit power: This last function is made possible by
the alternator being operated. This is used to improve the engine handling in critical operating phases, mainly when
idling and when starting. These requests are sent by the UCH via the CAN network where they are converted before
being sent to the alternator.

17B-35V7 MR-413-X44-17B000$090.mif
17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
1. COMPUTER REPLACEMENT OR REPROGRAMMING OPERATIONS
Computer replacement or reprogramming for engines with the OCS (customised oil change interval)
function.
For Vdiag 44 and 4C, commands SC001 and SC003 are not accessible.
The system can be programmed via the diagnostic socket using the RENAULT CLIP diagnostic tool (refer to
Technical Note 3585A, COMPUTER PROGRAMMING AND REPROGRAMMING PROCEDURE or follow the
instructions given by the diagnostic tool). Only in Vdiag 54 and certain engines in Vdiag 50:
For Vdiag 50, the procedure below should be followed only if ET840 Customised Oil Change Interval is ACTIVE.
Certain variables linked to the O.C.S and the details of the last four oil services are saved by the computer.
However, all data saved is cleared during a reprogramming operation. When replacing or reprogramming the
computer, it is necessary to save the data from the old computer so it can be written to the new computer
(or reprogrammed). To do this before changing (or reprogramming) the computer, it is necessary to run the request
SC003 Save computer data, and after it has been changed (or reprogrammed), it is necessary to run the request
SC001 Write saved data.
For Vdiag 50, if ET840 Customised Oil Change Interval is INACTIVE, commands SC001 and SC003 should
not be used.
Operations to check before reprogramming the injection 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:
Ignition switched on and main switch in rest position (the computer detects rest position at that moment).
Switch in Cruise control position to activate the Cruise control function.
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.
–Switch off all electrical consumers (lights, interior lighting, air conditioning, radio, etc.).
–Wait for the engine to cool (engine coolant temperature below 60˚C and air temperature below 50˚C).
PETROL INJECTION
Fault finding – Replacement of components

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

17B-43V7 MR-413-X44-17B000$131.mif
17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
* EOBD: European On Board Diagnostics
DF001
PRESENT
OR
STOREDCOOLANT TEMPERATURE SENSOR CIRCUIT
1.DEF: signal incoherence
2.DEF: abnormal voltage
3.DEF: EOBD*
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present when the ignition is switched on.
Special notes:
If the fault is present, the EOBD* warning light is illuminated and the low speed engine
cooling fan is permanently activated.
1.DEF: Consult the parameter PR064 Coolant temperature:
If the tool displays 120˚C, this indicates a short circuit to 12V or an open circuit.
If the tool displays - 40˚C, this indicates a short circuit to earth.
Use the Wiring Diagrams Technical Note for NEW TWINGO, E33, CLIO III,
or MODUS.
Check the condition of the connector of the coolant temperature sensor (component code 244) and of the engine
management computer (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.
Measure the resistance of the coolant temperature sensor, component code 244 between the connections 3C and
3JK:
●at 10˚C: 12030 Ω < X < 12890 Ω,
●at 25˚C: 2195 Ω < X < 2309 Ω,
●at 50˚C: 795.5 Ω < X < 826.5 Ω,
●at 80˚C: 279.3 Ω < X < 286.7 Ω.
If the coolant temperature sensor resistances are not correct, replace the coolant temperature sensor.
Check the insulation and continuity of the following connections:
●3C between components 120 and 244,
●3JK between the components 120 and 244.
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 Techline.
SIM32_V44_DF001/SIM32_V4C_DF001/SIM32_V50_DF001/SIM32_V54_DF001
PETROL INJECTION
Fault finding – Interpretation of faults
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition, wait 1 minute and carry out a road test followed by a check with
the diagnostic tool.

17B-44V7 MR-413-X44-17B000$131.mif
PETROL INJECTION
Fault finding – Interpretation of faults17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
DF002
PRESENT
OR
STOREDAIR TEMPERATURE SENSOR CIRCUIT
1.DEF: Abnormal voltage
2.DEF: EOBD
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present, with the ignition on.
Special notes:
The OBD warning light is lit.
Consult the parameters PR059 Air inlet temperature:
If the tool displays 120˚C, this indicates a short circuit to 12V or an open circuit.
If the tool displays - 40˚C, this indicates a short circuit to earth.
Use the Wiring Diagrams Technical Note for NEW TWINGO, E33, CLIO III,
or MODUS.
Check the condition of the connector of the air temperature sensor (component code 272) and of the engine
management computer (component code 120).
If the connector or connectors are faulty and if there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the connector, otherwise change the wiring.
Measure the resistance of the air temperature sensor, component code 272 between connections 3B and 3JQ:
●at 25˚C: 1928 Ω < X < 2174 Ω,
●at 50˚C: 763 Ω < X < 857 Ω.
If the air temperature sensor resistances are not correct, replace the air temperature sensor.
Check the insulation and continuity of the following connections:
●3B between components 120 and 272,
●3JQ between the components 120 and 272.
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 Techline.
SIM32_V44_DF002/SIM32_V4C_DF002/SIM32_V50_DF002/SIM32_V54_DF002
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition, wait 1 minute and carry out a road test followed by a check with
the diagnostic tool.