warning light RENAULT SCENIC 2011 J95 / 3.G Engine And Peripherals EDC16 Injection Workshop Manual

13B - 2
DIESEL INJECTION
Fault finding - Introduction13B
V10 MR-372-J84-13B150$047.mif
113B
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4CDIESEL INJECTION
Fault finding - Introduction
1. SCOPE OF THIS DOCUMENT
This document presents the fault finding procedure applicable to all computers with the following specifications:
2. PREREQUISITES FOR FAULT FINDING
Documentation type
Fault finding procedures (this manual):
– Assisted fault finding (integrated into the diagnostic tool), Dialogys.
Wiring diagrams:
– Visu-Schéma (CD-ROM), paper.
Type of diagnostic tools
–CLIP
Special tooling required
3. RECAP
Procedure
To save energy, the UCH of the vehicle interrupts the + after ignition feed after 3 minutes.
To carry out fault finding on the vehicle's computers, switch the ignition to fault finding mode (forced + after ignition).
Proceed as follows:
– with the vehicle card in the card reader,
– press and hold start button (longer than 5 seconds) with start-up conditions not fulfilled,
– connect the diagnostic tool and perform the required operations.
To cut off + after ignition, proceed as follows:
– disconnect the diagnostic tool,
– vehicle card in reader,
– press the Start button twice briefly (less than 3 seconds),
– Check that the + after ignition feed has been cut off by checking that the computer warning lights on the
instrument panel have gone out. Vehicle(s): Mégane II, Scénic II
Engine type and suffix: F9Q 800, 808, 812
Function concerned: Diesel injectionComputer name: Diesel injection
Program no.: C1
VDIAG No.: 44, 48 and 4C
Special tooling required
Multimeter
Elé. 1590Computer connection unit
Elé. 1681Universal unit
Note:
The left-hand and right-hand xenon bulb computers are powered when the dipped headlights are lit. Fault finding
procedures can only be carried out on them after the ignition has been switched on in fault finding mode (forced +
after ignition) and the dipped headlights are lit.
EDC16_V44_PRELI/EDC16_V4C_PRELI/EDC16_V48_PRELI
MR-372-J84-13B150$047.mif

13B - 10
DIESEL INJECTION
Fault finding - System operation13B
V10 MR-372-J84-13B150$094.mif
EDC16 INJECTION
Program No.: C1
Vdiag No: 44, 48 and 4C
a) The computer
– Determines the value of injection pressure necessary for the engine to operate correctly and then controls the
pressure regulator.
– It checks that the pressure value is correct by analysing the value transmitted by the pressure sensor located on
the rail.
– It determines the injection timing required to deliver the right quantity of diesel fuel and the moment when injection
should start.
– Controls each injector electrically and individually after determining these two values.
The flow injected into the engine is determined by:
– the duration of injector control,
– the rail pressure (regulated by the computer),
– the injector opening and closing speed,
– the needle stroke (determined by a constant for the type of injector),
– the nominal hydraulic flow of the injector (specific to each injector).
The computer manages:
– idling regulation,
– exhaust gas flow reinjection to the inlet,
– fuel supply check (advance, flow and rail pressure),
– the fan assembly via the Protection and Switching Unit (centralised coolant temperature management
function),
– the air conditioning (cold loop function),
– the cruise control/speed limiter function,
– the pre-postheating control.
– the fault warning lights via the multiplex network.
The high pressure pump is supplied at low pressure by an integrated low-pressure pump (transfer pump).
It supplies the rail, the pressure of which is controlled by the fuel flow actuator for charging, and for discharging by
the injector valves. This compensates for pressure drops.
The fuel flow actuator enables the high pressure pump to supply the exact quantity of diesel fuel required to maintain
the rail pressure. This component minimises the heat generated and improves engine output.
In order to discharge the rail using the injector valves, the valves are controlled by brief electrical pulses which are:
– short enough not to open the injector (passing through the feedback circuit from the injectors),
– long enough to open the valves and discharge the rail.

13B - 11
DIESEL INJECTION
Fault finding - System operation13B
V10 MR-372-J84-13B150$094.mif
EDC16 INJECTION
Program No.: C1
Vdiag No: 44, 48 and 4C
Multiplex connection between the vehicle's various computers
The Mégane II electronic system is a multiplex network. This enables dialogue between the various vehicle
computers. As a result:
– the activation of the fault warning lights on the instrument panel is performed by the multiplex network, with the
vehicle speed sensor on the gearbox deactivated,
– the vehicle speed signal is transmitted by the ABS-ESP computer via the multiplex network.
The system can inject diesel fuel into the engine at a pressure of up to 1350 bar. Before each operation, check that
the injection rail is depressurised and that the fuel temperature is not too high.
When working on the high pressure injection system, you must follow the cleanliness guidelines and safety advice
specified in this document.
Removal of the internal parts of the pump and injectors is prohibited. Only the fuel flow actuator, the diesel fuel
temperature sensor and the air vent unit can be replaced.
For safety reasons, it is strictly prohibited to undo a high pressure pipe union when the engine is running.
It is not possible to remove the pressure sensor from the fuel rail because this may cause circuit contamination
faults. If the pressure sensor fails, the pressure sensor, the rail and the five high pressure pipes must be replaced.
It is strictly prohibited to remove any injection pump pulley bearing the number 070 575. If the pump needs to be
replaced, replace the pulley.
Supplying + 12 V directly to any component in the system is prohibited.
Ultrasonic decoking and cleaning are prohibited.
Never start the engine unless the battery is connected correctly.
Disconnect the injection computer when carrying out any welding work on the vehicle. IMPORTANT
The engine must not operate with:
– Diesel fuel containing more than 10 % diester,
– Petrol, even in tiny quantities.

13B - 14
DIESEL INJECTION
Fault finding - System operation13B
V10 MR-372-J84-13B150$094.mif
EDC16 INJECTION
Program No.: C1
Vdiag No: 44, 48 and 4C
c) Warning light management
Instrument panel display
The computer manages the data display on the instrument panel relating to engine operation. This involves
5 functions:
– the OBD warning light (European On Board Diagnostic),
– pre/postheating warning light,
– the coolant temperature warning light,
– the fault level 1 warning light (non-critical fault),
– the fault level 2 warning light (stop immediately).
These five functions are represented by 3 warning lights or messages sent by the trip computer.
Pre/postheating indicator light
This warning light is used both as an in operation indicator light and as a system fault indicator:
– continuously lit under + after ignition feed: indicates that the heater plugs are operating,
– continuously lit with injection faulty: indicates a level 1 fault (involves injection system operating in defect
mode. The user must carry out repairs as soon as possible).
Temperature/emergency stop warning light
This indicator light is used both as an in-operation indicator light and as a system fault warning light. It lights up for
3 seconds after the ignition is switched on (automatic test procedure managed by the instrument panel).
– continuously lit: indicates engine overheating (the driver remains free to stop the vehicle or not),
– continuously lit, with the Engine stop message: indicates a level 2 fault (In this case injection is
automatically shut off after a few seconds).
Excess pollution OBD orange warning light
An engine symbol lights up for approximately 3 seconds when the engine is switched on.
For the Vdiag 44 and 48, it only lights up when the engine is running.
In Vdiag 4C, this warning light comes on if the system has one or more OBD faults.

13B - 16
DIESEL INJECTION
Fault finding - System operation13B
V10 MR-372-J84-13B150$094.mif
EDC16 INJECTION
Program No.: C1
Vdiag No: 44, 48 and 4C
3. Conditions for clearing an OBD fault
An OBD fault is cleared in several steps.
The fault present in the diagnostic tool is not stored (following repair) until after 3 trips with the vehicle.
The OBD warning light will only light up after these 3 driving cycles.
The warning light coming on does not always mean that there is a fault on the system.
In order that the OBD fault and the display parameters are cleared from the computer, the system goes
through 40 engine heating cycles.
An engine heating cycle is a driving cycle during which:
–the engine coolant temperature reaches at least 71.1 °C,
–the engine coolant temperature varies by 22.2 °C in relation to the engine starting temperature.
If one of these conditions is not fulfilled, the OBD fault will still be present or stored in the injection
computer.

13B - 20
DIESEL INJECTION
Fault finding - Replacement of components13B
V10 MR-372-J84-13B150$188.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4CDIESEL INJECTION
Fault finding - Replacement of components
COMPUTER REPLACEMENT OR REPROGRAMMING OPERATIONS
The system can be programmed or reprogrammed via the diagnostic socket using the RENAULT CLIP diagnostic
tool (see Technical Note 3585A).
While the computer is being reprogrammed the engine fan assemblies are automatically triggered).
Operations to be carried out 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.
To reset the function, proceed as follows:
Vehicle ignition on.
– Position the main switch in rest position (the computer then detects the rest position).
– Position the switch in Cruise control position to activate the Cruise control function.
– Position the switch in Speed limiter position to activate the Speed Limiter function.
Before reprogramming or replacing the computer in After-Sales operations, backup the following data to the
diagnostic tool:
– The IMA codes (individual correction of the injector).
– The engine adaptives (engine speed, and options available on the vehicle).
(this file corresponds to the last save carried out on the tool)
select YES,
When the backup is complete, replace the computer or reprogram, then proceed to the next step,
with command SC003 Backup computer data. IMPORTANT
–Switch on the diagnostic tool (mains or cigarette lighter feed).
–Connect a battery charger.
–Switch off all electrical consumers (lights, interior lights, air conditioning, radio/CD, etc.).
–Wait for the engine to cool (engine coolant temperature below 60 °C and air temperature below 50 °C).
WARNING
A computer without the IMA option can be replaced by a computer with this option. The codes have
therefore not been backed up during command SC003.
In this case, status ET104 "Injector code use" becomes "YES" or "FAULTY", fault DF276 "Injector code
programming" is present, and the engine operates in defect mode.
In this case, run command SC002 Enter injector codes, applying the procedure described in the
interpretation of this command.
MR-372-J84-13B150$188.mif

13B - 23
DIESEL INJECTION
Fault finding - Fault summary table13B
V10 MR-372-J84-13B150$235.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4CDIESEL INJECTION
Fault finding - Fault summary table
WARNING LIGHT MANAGEMENT
Management of instrument panel warning lights according to the faults notified.
Tool
fault
Associated
DTCDiagnostic tool titleLevel 1 fault
warning light
(Orange heater
plugs “on”
indicator light)Level 2 fault
warning light (Red
overheating
warning light)No fault
warning
light litOBD
warning
light lit
DF001 115Coolant temperature sensor
circuitCO.1/CC.0 ... ... ...
DF003 105Atmospheric pressure sensor
circuit1.DEF / 2.DEF /
3.DEF... ... ...
DF004 235Turbocharging pressure sensor
circuitCO.0 / CC.1 ... 1.DEF ...
DF005 335Engine speed sensor circuit ... ... 1.DEF/2.DEF ...
DF007 190Rail pressure sensor circuit CO.1 / 1.DEF /
2.DEFCC.0 ...
DF008 225Pedal potentiometer circuit
gang 1CO.0/CC.1/
1.DEF/2.DEF... ... ...
DF009 2120Pedal potentiometer circuit
gang 2CO.0/CC.1/
1.DEF... ... ...
DF011 641Sensor feed voltage no. 1 1.DEF/2.DEF ... ... ...
DF012 651Sensor feed voltage no. 2 1.DEF/2.DEF ... ... 1.DEF/
2.DEF
DF013 697Sensor feed voltage no. 3 ... 1.DEF/2.DEF ... ...
DF015 685Main relay control circuit ... ... 1.DEF/2.DEF ...
DF017 380Pre-postheating unit control
circuitCC.0 ... CC.1/CO/
1.DEF...
DF025 670Preheating unit diagnostic line ... X ...
DF037 C167Engine immobiliser ... X ...
DF038 606Computer 5.DEF / 13.DEF 1.DEF / 2.DEF /
3.DEF / 4.DEF /
6.DEF / 7.DEF /
8.DEF / 9.DEF /
10.DEF / 11.DEF /
12.DEF... 5.DEF
DF039 110Inlet air temperature sensor
circuit... ... CC.0/CO.1/
1.DEF...
MR-372-J84-13B150$235.mif

13B - 24
DIESEL INJECTION
Fault finding - Fault summary table13B
V10 MR-372-J84-13B150$235.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4C
Tool
faultAssociated
DTCDiagnostic tool titleLevel 1
fault warning
light (Orange
heater plugs
“on” indicator
light)Level 2 fault
warning light
(Red overheating
warning light)No fault
warning
light litOBD
warning
light lit
DF040 201Cylinder 1 injector circuit CO CC.1 / CC / 1.DEF ... CO
DF041 202Cylinder 2 injector circuit CO CC.1 / CC / 1.DEF ... CO
DF042 203Cylinder 3 injector circuit CO CC.1 / CC / 1.DEF ... CO
DF043 204Cylinder 4 injector circuit CO CC.1 / CC / 1.DEF ... CO
DF046 560Battery voltage ... ... 1.DEF/2.DEF ...
DF047 615Computer feed voltage ... ... X ...
DF049 530Refrigerant sensor circuit ... ... CC.1/CO.0 ...
DF050 571Brake switch circuit ... ... 1.DEF/2.DEF ...
DF051 575Cruise control/speed limiter
function... ... 1.DEF /
2.DEF /
3.DEF...
DF053 89Rail pressure regulation function 3.DEF / 8.DEF CC.0 / CC.1 / CO /
1.DEF / 2.DEF /
5.DEF / 6.DEF / 7.DEF4.DEF ...
DF054 33Turbocharging solenoid valve
control circuitCO/CC.0/CC.1/
1.DEF... ... ...
DF055 243Turbocharging pressure
regulation circuit1.DEF/2.DEF ... ... ...
DF056 100Air flow sensor circuit 3.DEF/4.DEF ... CC.0/CC.1/
1.DEF/2.DEF
DF057 2264Water in diesel fuel detector
circuit... ... X ...
DF067 638Damper control circuit ...
CC.0OC / CC.1 /
1.DEF...
DF069 1620Impact detected signal X
DF070 830Clutch switch circuit ... ... 1.DEF/2.DEF ...

13B - 25
DIESEL INJECTION
Fault finding - Fault summary table13B
V10 MR-372-J84-13B150$235.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4C
FAULT WARNING LIGHT MANAGEMENT (continued)
Tool
fault
Associated
DTCDiagnostic tool titleLevel 1
fault warning
light (Orange
heater plugs
“on” indicator
light)Level 2 fault
warning light
(Red overheating
warning light)No fault
warning
light litOBD
warning
light lit
DF091 500Vehicle speed signal ... ... 1.DEF/
2.DEF/
3.DEF/
4.DEF/5.DEF...
DF097 340Camshaft sensor circuit 1.DEF/2.DEF
DF098 180Fuel temperature sensor circuit ... ... CC.0 / CO.1
DF114 400EGR solenoid valve circuit ... ... 1.DEF/2.DEF
DF118 409EGR solenoid valve servo-
control... ... 1.DEF/2.DEF ...
DF119 365Camshaft sensor signal ... ... 1.DEF/2.DEF ...
DF120 385Engine speed sensor signal ... 1.DEF/2.DEF ...
DF209 486EGR valve position sensor circuit 1.DEF CC.1/CO.0
DF250 C122ESP function ... ... 1.DEF/2.DEF ...
DF272 403EGR valve control circuit CC.0 CC.1 / CO/
1.DEFCC.0
DF276 611Injector code programming 1.DEF/2.DEF
DF530 148AEGR programming adaptives X
DF619 487EGR valve jammed open X ... ... ...
DF620 148BEGR valve fouled X ... ... ...
DF621 2413EGR valve is jammed open
(OBD fault)... ... ... X
DF622 2142EGR valve jammed open ... ... X ...
DF1070 534Cold loop

13B-26
DIESEL INJECTION
Fault finding - Interpretation of faults13B
V10 MR-372-J84-13B150$282.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4CDIESEL INJECTION
Fault finding - Interpretation of faults
DF001
PRESENT
OR
STOREDCOOLANT TEMPERATURE SENSOR CIRCUIT
CC.0 : short circuit to earth
CO.1 : open circuit or short circuit to + 12 V
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present with the engine running or following a road test.
Special notes:
If the fault is present:
– the coolant temperature: PR064: Coolant temperature is fixed at 119°C,
– the preheating phase is greater than 10 seconds,
– the fan assembly is permanently supplied,
The level 1 warning light comes on.
Use bornier Elé. 1681 for any work on the computer connectors.
CC.0
NOTESNone.
Check the coolant temperature sensor connections.
Repair if necessary.
Measure the resistance of the coolant temperature sensor between terminals 2 and 3 of its black connector.
Replace the sensor if its resistance is not approximately: 12460±112Ω at -10°C
2252±112Ω at 25°C
811.4±39Ω at 50°C
283±8Ω at 80°C
115±3Ω at 110°C
Check the injection computer connections.
Check for continuity and the absence of interference resistance of the following connections:
Injection computer brown 48-track connector B, track F2 Track 3 coolant temperature sensor
Injection computer brown 48-track connector B, track H1 Track 2 coolant temperature sensor
Repair if necessary.
If the fault is still present, replace the coolant temperature sensor.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by a check with the diagnostic tool.
EDC16_V44_DF001/EDC16_V48_DF001/EDC16_V4C_DF001
MR-372-J84-13B150$282.mif