RENAULT SCENIC 2010 J95 / 3.G Engine And Pheripherals DCM 1.2 Injection Owner's Manual

13B-21V10 MR-372-J84-13B100$050.mif
13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
High and low pressure pump:
The pump draws in fuel from the tank, which passes through a fuel filter and supplies the fuel injectors.
Injector rail:
The injector rail receives and redistributes fuel under high pressure to the injectors.
Solenoid injectors:
These injectors enable rapid, precise metering of the quantity of fuel injected, with excellent injection process
repetitiveness.
Catalytic converter:
Its role is to convert pollutant gases into harmless gases.
Heater plugs:
The heater plugs create a hot point in the combustion chamber to improve starting in low temperature conditions.
They are also used to improve idle speed stability under some conditions.
Turbocharger:
The turbocharger is used to supply the engine with more air.
Turbocharger control solenoid valve (K9K 724, 766, 802, and 812 only):
This solenoid valve controls the turbocharger wastegate.
Air flowmeter (if present on the vehicle):
The flowmeter measures the amount of fresh air which goes back into the engine.
EGR valve:
The exhaust gas recirculation enables nitrogen oxide (NOx) emissions to be reduced significantly.
Cruise control - speed limiter on - off switch:
This switch turns the cruise control/speed limiter on or off.
Accelerator pedal potentiometer:
The accelerator potentiometer informs the computer about the position of the accelerator pedal (engine load).
Clutch pedal switch:
The clutch pedal switch informs the computer about the pedal status.
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 as well as 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 (TDC), it can be 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.
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 about the engine coolant temperature.
Water in diesel fuel sensor (New Twingo and Kangoo 2 only):
This sensor determines if there is water present in the diesel fuel.
DIESEL INJECTION
Fault finding – Role of components

13B-22V10 MR-372-J84-13B100$050.mif
DIESEL INJECTION
Fault finding – Role of components13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
Air temperature sensor:
The air temperature sensor informs the computer about the temperature of air used by the engine. It will calculate
the fresh air flow if the flow sensor is not fitted to the vehicle.
Atmospheric pressure sensor:
This sensor allows the atmospheric pressure to be supplied to the computer.
Inlet manifold pressure sensor:
This sensor indicates the pressure in the inlet circuit.
Rail pressure sensor:
This sensor is fitted to the rail and shows the pressure inside the rail.
Fuel temperature sensor:
This sensor measures the fuel return temperature from the pump and injector return.
Accelerometer:
This sensor measures vibrations and allows injector deviation compensation terms to be calculated.
Passenger compartment heating resistor relay:
This relay allows the passenger compartment heating resistors to be controlled during their activation.
Air conditioning compressor relays:
This relay allows the air conditioning compressor clutch to be controlled during its activation.
Fan unit relay:
This relay actuates the motor-driven fan assemblies when a temperature threshold has been exceeded.

13B-23V10 MR-372-J84-13B100$060.mif
13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
COMPUTER REPLACEMENT OR REPROGRAMMING OPERATIONS
Before removing any old computer as an After-Sales operation, save the following data using the diagnostic
tool:
–The C2I (individual injector correction) parameters and the engine adaptives using command SC003 Save
computer data.
The system can be programmed by the diagnostic socket using the RENAULT CLIP diagnostic tool (refer to
Technical Note 3585A, Computer programming and reprogramming procedure, and follow the instructions
provided by the diagnostic tool).
After replacing or reprogramming the computer
–Switch the ignition off and then on again.
–Use the diagnostic tool command SC001 Enter saved data to restore the C2I and the engine adaptives.
–On Kangoo 2, use the diagnostic tool command SC040 Speed limiter, if necessary.
–Use command AC028 Static test to reinitialise the computer (fan assembly, etc.).
–Switch the ignition off and then on again.
–When changing the pump, refer to the high pressure pump replacement procedure (consult Technical Note
5011A, Repriming Delphi high pressure pumps on K9K engines).
–Activate the starter without releasing the key until the engine starts (the engine start time can be up to
20 seconds).
–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 command VP010 Enter VIN.
–After injection system programming, stored faults may appear on other computers. Clear the memory of these
computers.
–Switch the ignition off and then on again. IMPORTANT
–Switch on the diagnostic tool (mains or cigarette lighter supply).
–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 less than 60
°C and air temperature less than 50°C).
IMPORTANT
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:
Vehicle ignition on.
Main switch in rest position (the computer then detects the rest position).
Switch in the Cruise control position to activate the Cruise control function.
Switch in the Speed limiter position to activate the Speed limiter function.
IMPORTANT
AFTER A PROGRAMMING OPERATION, DO NOT CONNECT THE BATTERY FOR AT LEAST 30 minutes (to
carry out other work on the vehicle).
DIESEL INJECTION
Fault finding – Replacement of components

13B-24V10 MR-372-J84-13B100$060.mif
DIESEL INJECTION
Fault finding – Replacement of components13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
Note:
If commands SC001 Enter saved data and SC003 Save computer data have been lost or if they are not operating
after programming the computer:
–Save the C2I of each injector manually by reading the C2I on each injector and use command SC002 Enter
injector codes (see injector replacement).
–Use command AC028 Static test to reinitialise the computer (fan assembly, etc.).
–Switch the ignition off and then on again.
Clear the engine management computer faults.
For Clio III, Modus, Kangoo 2 and New Twingo only:
After programming a new injection computer:
–Switch the ignition off and then on again.
–Select the UCH domain using the diagnostic tool.
–In repair mode, run command SC017 Injection immobiliser code programming, and follow the
instructions given by the diagnostic tool.
–Switch the ignition off and then on again.
–Select the INJECTION subgroup and check that status ET006 is Code programmed.
If ET006 Code programmed = YES, go on to the next steps; if ET006 = NO, run command SC017 Injection
immobiliser code programming again, and follow the instructions given by the diagnostic tool.
Note:
If commands SC001 Enter saved data and SC003 Save computer data have been lost or if they are not operating
after programming the computer:
–Save the C2I of each injector manually by reading the C2I on each injector and use command SC002 Enter
injector codes (see injector replacement).
–Use command AC028 Static test to reinitialise the computer (fan assembly, etc.).
–Switch the ignition off and then on again.
–Clear the engine management computer faults.
IMPORTANT
It is not possible to try an injection computer from the Parts Department as it will not be possible to fit it on another
vehicle afterwards.

13B-25V10 MR-372-J84-13B100$060.mif
DIESEL INJECTION
Fault finding – Replacement of components13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
REPLACING THE INJECTORS:
The system can be set up using the diagnostic socket with the RENAULT CLIP diagnostic tool.
The C2I parameters must be replaced after replacing an injector or injectors.
To do this, reprogram C2I into the computer using the following commands:
Cylinder 1 injector: command VP001 Cylinder 1 injector code (cylinder at flywheel end)
Cylinder 2 injector: command VP002 Cylinder 2 injector code
Cylinder 3 injector: command VP003 Cylinder 3 injector code
Cylinder 4 injector: command VP004 Cylinder 4 injector code
The four C2I can be entered using command SC002 Enter injector codes.
The technician can use the appropriate command to re-enter the new C2I for the replaced injector and to erase the
old C2I.
Only after simultaneously replacing at least three injectors, reset the injector adaptives, using command RZ004
Pressure regulation adaptives.
REPLACING THE HIGH PRESSURE PUMP
PROCEDURE
Refer to Technical Note 5011A, Repriming Delphi high pressure pumps on K9K engines.
EGR VALVE REPLACEMENT:
If replacing the EGR valve, it is essential to program the new valve's offset position. To do this, clear the old offset
using the EGR programming clearing procedure and run command RZ002 EGR adaptives. Note:
C2I (individual injector correction) is a calibration carried out in the factory on each injector to adjust the flow
of each injector precisely.
The correction values are written on a label affixed to each injector and then are entered in the computer, which
can then actuate each injector by taking account of their manufacturing variation.
IMPORTANT
When reprogramming the computer, only carry out the following procedure after command AC028 Static
test has been run (see Computer reprogramming operation).

13B-26V10 MR-372-J84-13B100$070.mif
13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
CONFIGURATION READING
SETTINGS
VP001:Cylinder 1 injector code.
VP002:Cylinder 2 injector code.
VP003:Cylinder 3 injector code.
VP004:Cylinder 4 injector code.
These commands enable you to manually write the calibration code marked on the injector. Use these commands
after replacing the injector or replacing or (re)programming the computer, when command SC001 Enter saved data
does not work.
VP010:Enter VIN.
This command permits manual entry of the vehicle's VIN into the computer.
Use this command each time the computer is replaced or (re)programmed.
VP013:Lock injector control.
This command disables electrical actuation of the injectors, for carrying out the compression test.
SPECIAL COMMANDS
SC001:Enter saved data.
Use this command after replacing or (re)programming the computer (if the data were saved using
command SC003 Save computer data).
SC002:Enter injector codes.
This command enables you to manually write the calibration code marked on the injectors. Run this
command after replacing the injectors.
SC003:Save computer data.
This command saves the computer's operating data, C2I (individual injector correction) parameters
and engine adaptives. Run this command before replacing or (re)programming.
SC040:Speed limiter.
This command is used to change the vehicle restriction speed. Run this command after replacing
or (re)programming.
SC041:Modification of CV* idle speed.
This command is used to change the idle speed. Run this command after replacing or (re)programming.
* CV: Commercial vehicleIndex Title Display comment
LC120 Cruise controlWith or Without
LC121 Speed limiterWith or Without
LC172 FlowmeterWith or Without
DIESEL INJECTION
Fault finding – Configuration and programming

13B-27V10 MR-372-J84-13B100$080.mif
13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
Tool faultDTC codeDiagnostic tool title
DF0010115 Coolant temperature sensor circuit
DF0020070 Air temperature sensor circuit
DF0032226 Atmospheric pressure sensor circuit
DF0050335 Engine speed sensor circuit
DF0070190 Rail pressure sensor circuit
DF0080225 Pedal potentiometer circuit gang 1
DF0092120 Pedal potentiometer circuit gang 2
DF0100409 EGR position sensor circuit
DF0140500 Vehicle speed information circuit
DF0150685 Main relay control circuit
DF0160403 EGR control circuit
DF0170382 Preheating unit control circuit
DF0180480 Low-speed fan unit control circuit
DF0190481 High-speed fan unit control circuit
DF0240231 Low pressure actuator control circuit
DF0250380 Pre-postheating unit diagnostic line
DF0260201 Cylinder 1 injector control circuit
DF0270202 Cylinder 2 injector control circuit
DF0280203 Cylinder 3 injector control circuit
DF0290204 Cylinder 4 injector control circuit
DF0321641 Thermoplunger 1 relay control circuit
DF0331642 Thermoplunger 2 relay control circuit
DF0341643 Thermoplunger 3 relay control circuit
DF0370513 Engine immobiliser
DF0380606 Computer
DF0390110 Inlet air temperature sensor circuit
DF0470560 Computer feed voltage
DF0490530 Refrigerant sensor circuit
DF0500571 Brake switch circuit
DF0510575 Cruise control/speed limiter function
DF0520200 Injector control circuit
DIESEL INJECTION
Fault finding – Fault summary table

13B-28V10 MR-372-J84-13B100$080.mif
DIESEL INJECTION
Fault finding – Fault summary table13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
*supply: supplyDF0530089 Rail pressure regulation function
DF0560100 Air flow sensor circuit
DF0572264 Water in diesel fuel detector circuit
DF0590263 Misfires in cylinder 1
DF0600266 Misfires in cylinder 2
DF0610269 Misfires in cylinder 3
DF0620272 Misfires in cylinder 4
DF0890235 Inlet manifold pressure sensor circuit
DF0980180 Fuel temperature sensor circuit
DF099C101Automatic or sequential gearbox connection via the multiplex
network
DF1070604 Computer memory
DF1120340 Cylinder reference sensor circuit
DF1130641 Sensor feed voltage
DF1140400 EGR solenoid valve circuit
DF1210325 Accelerometer circuit
DF1220651 Pedal potentiometer gang 2 supply voltage
DF1300087 Flow capacity function
DF1950016 Camshaft sensor / engine speed consistency
DF2090487 EGR valve position sensor circuit
DF2210830 Clutch switch signal
DF2420654 Engine speed signal output
DF2610045 Turbocharger actuator circuit
DF4272263 Turbocharger actuator control
DF4890645 Air conditioning compressor control
DF6310703 Brake light switch signal
DF648062F Computer
DF8590170 Injector programming cycle not done
DF8862269 Presence of water in the diesel fuel
DF10700534 Cold loop
Tool faultDTC codeDiagnostic tool title

13B-29
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V10 MR-372-J84-13B100$090.mif
13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
DF001
PRESENT
OR STOREDCOOLANT TEMPERATURE SENSOR CIRCUITCO.1: Open circuit or short circuit to +12 V
CC.0: Short circuit to earth
NOTESSpecial notes:
If fault DF001 is present, the preheating time is greater than 10 seconds and the engine
fan switches on at low speed (Fan assembly 1). If there is a fault on Fan assembly 1,
then on vehicles fitted with air conditioning, Fan assembly 2 switches on.
See the Technical Note Wiring Diagrams for the vehicle.
Check the connection and condition of the coolant temperature sensor connector, component code 244.
Check the connection and condition of connector B (brown 48-track) of the injection computer, component
code 120.
If the connector(s) is 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 component 244 between connections 3JK and 3C.
If the resistance of the coolant temperature sensor is not:
at –40
°C: 68780 ΩΩ Ω Ω
< X < 82780 ΩΩ Ω Ω

at –10
°C: 11332 ΩΩ Ω Ω
< X < 13588 ΩΩ Ω Ω

at 25
°C: 2140 ΩΩ Ω Ω
< X < 2364 ΩΩ Ω Ω

at 50
°C: 772 ΩΩ Ω Ω
< X < 850 ΩΩ Ω Ω

at 80
°C: 275 ΩΩ Ω Ω
< X < 291 ΩΩ Ω Ω

at 110
°C: 112 ΩΩ Ω Ω
< X < 118 ΩΩ Ω Ω

at 120
°C: 86 ΩΩ Ω Ω
< X < 90 ΩΩ Ω Ω
,
replace the coolant temperature sensor, component code 244 (see MR 364 (Mégane II), MR 370 (Scénic II),
MR 385 (Modus), MR 392 (Clio III), MR 411 (New Twingo), MR 417 (Kangoo 2) Mechanical, 19A, Cooling,
Coolant temperature sensor: Removal - Refitting).
Check the insulation and continuity of the following connections:
–3JK between components 120 and 244,
–3C between 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 the wiring.
If the fault is still present, replace the coolant temperature sensor, component code 244 (see MR 364 (Mégane II),
MR 370 (Scénic II), MR 385 (Modus), MR 392 (Clio III), MR 411 (New Twingo), MR 417 (Kangoo 2) Mechanical,
19A, Cooling, Coolant temperature sensor: Removal - Refitting).
If the fault is still present, contact the Techline.
DCM1.2_V48_DF001/DCM1.2_V4C_DF001/DCM1.2_V50_DF001/DCM1.2_V54_DF001/DCM1.2_V58_DF001/DCM1.2_V5C_DF001
DIESEL INJECTION
Fault finding – Interpretation of faults

13B-30
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V10 MR-372-J84-13B100$090.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
DF002
PRESENT
OR STOREDAIR TEMPERATURE SENSOR CIRCUITCO.1: Open circuit or short circuit to +12 V
CC.0: Short circuit to earth
1.DEF: inconsistency
NOTESDepending on the engine type, the air temperature is given by the air temperature
sensor, which is either on the air flowmeter or in place of the air flowmeter on K9K 724,
740, 766, 768, and 812 engines only.
See the Technical Note Wiring Diagrams for the vehicle.
The air temperature sensor in the flow sensor has a separate electrical circuit.
Move the wiring between the computer and the air temperature sensor to see if a change of status occurs
(present stored).
Look for any wiring damage and check the connection and condition of the air temperature sensor and its
connections.
Check the connection and condition of the injection computer connector.
If the connector(s) is 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 component 272 between connections 3JQ and 3B.
If the resistance of the air temperature sensor is not:
(theoretical values for engines with flowmeter)
at -10
°C: 8716 ΩΩ Ω Ω
< X < 9688 ΩΩ Ω Ω
at 0
°C: 5497 ΩΩ Ω Ω
< X < 6051 ΩΩ Ω Ω
at 10
°C: 3553 ΩΩ Ω Ω
< X < 3875 ΩΩ Ω Ω
at 20
°C: 2353 ΩΩ Ω Ω
< X < 2543 ΩΩ Ω Ω
at 30
°C: 1613 ΩΩ Ω Ω
< X < 1729 ΩΩ Ω Ω
(theoretical values for engines without flowmeter)
at -10
°C: 8623 ΩΩ Ω Ω
< X < 10454 ΩΩ Ω Ω
at 25
°C: 1928 ΩΩ Ω Ω
< X < 2174 ΩΩ Ω Ω
at 50
°C: 763 ΩΩ Ω Ω
< X < 857 ΩΩ Ω Ω
,
replace the air temperature sensor.
DCM1.2_V48_DF002/DCM1.2_V4C_DF002/DCM1.2_V50_DF002/DCM1.2_V54_DF002/DCM1.2_V58_DF002/DCM1.2_V5C_DF002