ABS RENAULT TWINGO 2009 2.G Electrical Equipment - Petrol Injection Workshop Manual
[x] Cancel search | Manufacturer: RENAULT, Model Year: 2009, Model line: TWINGO, Model: RENAULT TWINGO 2009 2.GPages: 348
Page 6 of 348
17B-6V7 MR-413-X44-17B000$010.mif
PETROL INJECTION
Fault finding – Introduction17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
4. FAULT FINDING PROCEDURE (CONTINUED)
Wiring check
Fault finding problems
Disconnecting the connectors and/or manipulating the wiring may temporarily remove the cause of a fault.
Electrical measurements of voltage, resistance and insulation are generally correct, especially if the fault is not
present when the analysis is made (stored fault).
Visual inspection
Look for damage under the bonnet and in the passenger compartment.
Carefully check the fuses, insulators and wiring harness routing.
Look for signs of oxidation.
Physical inspection
While manipulating the wiring, use the diagnostic tool to note any change in fault status from stored to present.
Make sure that the connectors are properly locked.
Apply light pressure to the connectors.
Twist the wiring harness.
If there is a change in status, try to locate the source of the fault.
Inspection of each component
Disconnect the connectors and check the appearance of the clips and tabs, as well as the crimping (no crimping
on the insulating section).
Make sure that the clips and tabs are properly locked in the sockets.
Check that no clips or tabs have been dislodged during connection.
Check the clip contact pressure using an appropriate model of tab.
Resistance check
Check the continuity of entire lines, then section by section.
Look for a short circuit to earth, to + 12 V or with another wire.
If a fault is detected, repair or replace the wiring harness.
Page 10 of 348
17B-10V7 MR-413-X44-17B000$030.mif
17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
1. SYSTEM OPERATION
Composition
The injection system consists of the:
–accelerator potentiometer,
–TDC sensor,
–atmospheric pressure sensor,
–air temperature 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,
–pinking sensor,
–4 injectors,
–ignition coil,
–pinking sensor.
Additional components on D4F 764:
–camshaft dephaser,
–camshaft position sensor,
–electrically controlled coolant thermostat.
Additional components on D4F 784:
–Turbocharging system,
–turbocharger,
–Oil vapour rebreathing circuit,
–OCS - Configured oil service interval.
Computer
SIEMENSSIM32type112-track co mputer controlling the injection a nd ignition. M ultipoint injection in se quential mode.
Connections with the other computers, known as "Intersystem connections":
–ESP (fitted according to the vehicle equipment level).
–Passenger Compartment Control Unit (UCH).
–Gearbox Computer: sequential gearbox or automatic gearbox (if fitted to the vehicle).
–Instrument panel.
–Radio navigation (if fitted to the vehicle).
–Airbag.
–ABS (if fitted to the vehicle).
–Protection and Switching Unit (UPC).
–Air conditioning.
PETROL INJECTION
Fault finding – System operation
Page 21 of 348
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
Page 22 of 348
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
Page 26 of 348
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.
Page 28 of 348
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
Page 30 of 348
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.
Page 46 of 348
17B-46V7 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
DF004
CONTINUED
If the fault is still present, disconnect the battery and the injection computer.
Check the insulation, continuity and the absence of interference resistance of the following connections:
●3LQ between the components 120 and 1071,
●3LN between the components 120 and 1071,
●3LP between the components 120 and 1071.
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.
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.
Page 67 of 348
17B-67V7 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
Vdiag 54 only
DF054
PRESENT
OR
STOREDTURBOCHARGING SOLENOID VALVE CONTROL CIRCUITCO: Open circuit
CC.0: Short circuit to earth
CC.1: Short circuit to + 12 V
1.DEF: EOBD
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present after the ignition is switched on or after the engine has
been running at an engine speed above 600 rpm.
Special notes:
–OBD warning light illuminated.
–Throttle valve defect mode type 6.
Use the Wiring Diagrams Technical Note for NEW TWINGO, E33, CLIO III, or
MODUS.
Check the cleanliness, condition, and fitting of the turbocharging solenoid valve (component code 436).
If the connector is faulty and there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
If the fault is still present, manipulate the wiring harness in order to note a change in fault status (present
→
stored).
Check the condition of the engine management computer connector (component code 120).
Look for possible damage to the wiring harness.
If the connector is faulty and there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
Check for +12 V on connection 3AHN of the turbocharger solenoid valve, component code 436.
If +12 V is not present, check the insulation, continuity, and the absence of interference resistance on
connection:
●3AHN between components 120 and 436.
If the connection is faulty and if there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
SIM32_V54_DF054
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.
Page 68 of 348
17B-68V7 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
DF054
CONTINUED
If the fault is still present, disconnect the battery and the injection computer.
Check the insulation, continuity, and the absence of interference resistance on connection:
●3AT between components 120 and 436.
If the connection is faulty and if 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, measure the resistance of the turbocharging solenoid valve between connections 3AHN
and 3AT.
If the resistance of the turbocharger solenoid valve is not between:
●21.8 Ω < X < 24.2 Ω at 23˚C, replace the solenoid valve.
If the fault is still present, contact the Techline.
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.