RENAULT SCENIC 2010 J95 / 3.G Engine And Pheripherals DCM 1.2 Injection Workshop Manual

13B-201
AFTER REPAIRDeal with any faults. Clear the faults from the computer memory.
Switch off the ignition and carry out a road test followed by a test with the diagnostic
tool.
V10 MR-372-J84-13B100$170.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 54
*VU: Commercial vehicle
PR878FAST IDLE SPEED
PARAMETER
DEFINITIONThis parameter indicates the fast idle speed in rpm.
NOTESSpecial notes:
It is possible to modify the value of the PR878 using the command SC041 Modification
of the commercial vehicle idle speed.
This parameter is valid only on Kangoo 2.
Conformity check: Engine stopped, ignition on or engine running.
If the function was activated (ET800 Fast idle function ACTIVE status), PR878 shows the value of fast idle
speed in rpm.
It is possible to modify the value using command SC041 Changing VU idle speed.
The idle speed values that can be modified are: 1000, 1100, 1200, 1300 rpm.
DCM1.2_V54_PR878

13B-202
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$170.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 54
PR879MAXIMUM AUTHORISED SPEED
PARAMETER
DEFINITIONThis parameter indicates the maximum authorised speed in mph (km/h) requested by
the customer using command SC040 Speed limiter.
NOTESSpecial notes:
It is possible to modify the value of PR879 using command SC040 Speed limiter.
This parameter is valid only on Kangoo 2.
Conformity check: Engine stopped and ignition on, or engine running and engine coolant
temperature > 80
°C
If ET741 "Optional vehicle speed restriction" is ACTIVE, the value of PR879 is between 18 mph (30 km/h) and
150 mph (250 km/h).
In the event of a fault or modification of this speed, use command SC040 Speed limiter.
DCM1.2_V54_PR879

13B-203
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$170.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 54, 5C
PR932DEGREE OF ENGINE OIL DILUTION
PARAMETER
DEFINITIONThis parameter gives the value for the degree of oil wear in %.
NOTESThis parameter is not to be interpreted:
–on the K9K812 engine,
–if PR932 = 0 (Vdiag 58 only).
Conformity check: Engine stopped, ignition on or engine running.
PR932 = 0% for the first 900 miles (1500 km), beyond this value the PR932 changes regularly until it
reaches 100%.
If PR932 = 100% it means that the oil should be changed.
DCM1.2_V54_PR932/DCM1.2_V5C_PR932

13B-204
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$170.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 54, 5C
PR1015OIL SERVICE INTERVAL
PARAMETER
DEFINITIONThis parameter indicates the vehicle distance before the next oil change in miles (km).
NOTES–This parameter is not to be interpreted:
–on the K9K812 engine,
–if PR1015 = 50000 (Vdiag 58 only).
Conformity check: Engine stopped, ignition on or engine running.
20000 km < PR1015 < 0 km.
This parameter decreases to 0 according to the vehicle distance and the degree of oil wear.
DCM1.2_V54_PR1015/DCM1.2_V5C_PR1015

13B-205V10 MR-372-J84-13B100$180.mif
13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
Tool
commandDiagnostic tool titleComments
RZ001 Fault memoryThis command is used for clearing the computer's stored
faults.
RZ002 EGR programming adaptivesUse this command when replacing the EGR valve or after it has
been cleaned.
RZ004Pressure regulation
adaptivesUse this command when replacing all four injectors at once. It
enables you to reset the injector adaptive programs.
RZ005 ProgrammingThis command enables you to reinitialise the entire computer
configuration according to the vehicle.
AC001 Preheating unitActivating this actuates the preheating unit to test the heater
plug supply. In the event of a fault, refer to the interpretation
of DF017 Preheating unit control circuit.
AC002 EGR solenoid valveThis command actuates the EGR valve. In the event of a fault,
refer to the interpretation of faults DF016 "EGR control
circuit" and DF114 "EGR solenoid valve circuit".
AC004Turbocharging solenoid
valveThis command actuates the turbocharging solenoid valve. In
the event of a fault, refer to the interpretation of faults
DF261 "Turbocharger actuator circuit" and DF427 "Turbo
actuator control".
AC005 Cylinder 1 injectorThis activation makes it possible to check injector 1 by
listening. In the event of a fault, refer to the interpretation of
fault DF026 Cylinder 1 injector control circuit.
AC006 Cylinder 2 injectorThis activation makes it possible to check injector 2 by
listening. In the event of a fault, refer to the interpretation of
fault DF027 Cylinder 2 injector control circuit.
AC007 Cylinder 3 injectorThis activation makes it possible to check injector 3 by
listening. In the event of a fault, refer to the interpretation of
fault DF028 Cylinder 3 injector control circuit.
AC008 Cylinder 4 injectorThis activation makes it possible to check injector 4 by
listening. In the event of a fault, refer to the interpretation of
fault DF029 Cylinder 4 injector control circuit.
AC010 High pressure pumpActivating this lets you listen to the operation of the high
pressure pump.
AC028 Static testThis activation allows systems to be detected and starts the
diagnostic check of the EGR and high pressure pump circuits
(Ignition switched on, engine stopped).
AC029High pressure circuit sealing
testThis activation allows the high pressure circuit sealing to be
checked after an operation has been carried out
(Engine running vehicle stopped).
DIESEL INJECTION
Fault finding – Command summary table

13B-206V10 MR-372-J84-13B100$180.mif
DIESEL INJECTION
Fault finding – Command summary table13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
AC153* High-speed fan assemblyThis command enables the high-speed fan assembly to be
controlled. In the event of a fault, consult the interpretation of
fault DF019 High speed fan assembly control circuit.
Except Vdiag48 and 4C.
AC154* Low-speed fan assemblyThis command enables the low-speed fan assembly to be
controlled. In the event of a fault, consult the interpretation of
fault DF018 Low speed fan assembly control circuit.
Except Vdiag48 and 4C.
AC180*Air conditioning compressor
relay controlThis activation allows the air conditioning compressor clutch
relay to be controlled. In the event of a fault, refer to the
interpretation of DF489 Air conditioning compressor
control.
AC212 New pump chamber fillingActivates New pump chamber filling next time the vehicle is
started.
AC250 Heating resistor 1 relayThis activation enables the heating resistor 1 relay to be
controlled. If there is a fault, refer to the interpretation of fault
DF032 Thermoplunger 1 relay control circuit.
Only for Vdiag 50.
AC251 Heating resistor 2 relayThis activation enables the heating resistor 2 relay to be
controlled. If there is a fault, refer to the interpretation of fault
DF033 Thermoplunger 2 relay control circuit.
Only for Vdiag 50.
SC001 Write saved dataUse this command after replacing or (re)programming the
computer (if the data has been saved using command SC003).
SC002 Enter injector codesThis command enables you to manually write the calibration
code marked on the injectors. Run this command after
replacing the injectors.
SC003 Save computer dataThis command enables the computer operating data
and the engine adaptives to be recorded.
SC040 Speed limiterThis command enables the vehicle speed restriction to be
modified. Run this command after replacing or
(re)programming.
This command applies only on Kangoo 2
SC041Changing commercial
vehicle idle speedThis command enables the idle speed to be modified. Run this
command after replacing or (re)programming.
This command applies only on Kangoo 2
Tool
commandDiagnostic tool titleComments

13B-207V10 MR-372-J84-13B100$190.mif
13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
Some specific checks are grouped together into tests and are used as required in various fault finding charts (ALPs)
or fault interpretations.
NOTESOnly consult these tests when dealing with a fault finding chart (ALP) or when
interpreting faults.
Low pressure circuit check TEST 1
Electrical circuit check TEST 2
Injector check TEST 3
Inlet circuit check TEST 5
High pressure system check TEST 6
High pressure circuit sealing check TEST 7
Injector return flow TEST 8
Diesel filter check TEST 9
Turbocharger solenoid valve check TEST 10
Air line at the turbocharger TEST 11
Turbocharger TEST 12
Diesel fuel conformity check TEST 13
Accelerator pedal check TEST 14
DIESEL INJECTION
Fault finding – Tests

13B-208V10 MR-372-J84-13B100$190.mif
DIESEL INJECTION
Fault finding – Tests13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
TEST 1 Low pressure circuit check
Check the conformity of the low pressure circuit
connections.
Are the low pressure circuit connections correct? Carry out the necessary repairs.
Check the condition of the priming bulb, and that it is
working properly.
Look for leaks at the unions.
Are there leaks from the hoses and unions? Carry out the necessary repairs.
Check that there are no air bubbles in the diesel fuel.–Bleed the low-pressure circuit.
–Place a container under the filter.
–Disconnect the return hose from the filter
and plug the filter.
–Pump using the priming bulb until there is no
air left.
–Reconnect the return hose immediately. Are air bubbles present in the low pressure circuit?
Low pressure circuit correct.
NO
YES
YES
NO
YES
NO
DCM1.2_V48_TEST1/DCM1.2_V4C_TEST1/DCM1.2_V50_TEST1/DCM1.2_V54_TEST1/DCM1.2_V58_TEST1/DCM1.2_V5C_TEST1

13B-209V10 MR-372-J84-13B100$190.mif
DIESEL INJECTION
Fault finding – Tests13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
TEST 2 Electrical circuit check
Check the battery charge and that the alternator
is operating correctly (see 87B, Passenger
compartment connection unit for the New
Twingo or see 87G, Engine compartment
connection unit for Clio III, Modus, Mégane II,
Scénic II and Kangoo 2).
Is the charging circuit in good order? Carry out the necessary repairs.
Check the fuses.
Are the fuses correct? Carry out the necessary repairs.
Check that the injection locking relay is operating
correctly.
Is the injection locking relay working properly? Carry out the necessary repairs.
Check the engine earths.
Are the engine earths correct? Carry out the necessary repairs.
The electrical circuit is in good order.
NO
YES
NO
YES
NO
YES
NO
DCM1.2_V48_TEST2/DCM1.2_V4C_TEST2/DCM1.2_V50_TEST2/DCM1.2_V54_TEST2/DCM1.2_V58_TEST2/DCM1.2_V5C_TEST2

13B-210V10 MR-372-J84-13B100$190.mif
DIESEL INJECTION
Fault finding – Tests13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
TEST 3 Injector check
Is diesel fuel present around the injectors?Locate the source of the leak and carry out
the necessary repairs.
Control the injectors using commands
AC005 Cylinder 1 injector, AC006 Cylinder 2
injector, AC007 Cylinder 3 injector
and AC008 Cylinder 4 injector.
Can you hear the valve moving when you are
1 metre away from the vehicle?Check the insulation and the continuity of
the electrical circuit.
Run test 9 Diesel filter check.
If test 9 is correct, replace the faulty injector(s)
(MR 364 (Mégane II), MR 370 (Scénic II),
MR 385 (Modus), MR 392 (Clio III), MR 411
(New Twingo), MR 417 (Kangoo 2),
Mechanical, 13B, Diesel injection, Diesel
fuel injector: Removal - Refitting).
End of TEST 3.YES
NO
NO
YES
DCM1.2_V48_TEST3/DCM1.2_V4C_TEST3/DCM1.2_V50_TEST3/DCM1.2_V54_TEST3/DCM1.2_V58_TEST3/DCM1.2_V5C_TEST3