2010 RENAULT SCENIC ignition

13B-212V10 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 6 High pressure system check
NOTESSpecial note:
Certain faults make it impossible to carry out this test - deal with these first.
WARNING
Running the starter motor for more than 5 seconds is dangerous and serves no
useful purpose.
Preliminary checks:
–Check for the presence of fuel
–Check that there is no air in the low pressure circuit. Run TEST 1 Low pressure circuit check.
–Ensure that the correct fuel is being used. Run test 13 Diesel fuel conformity check.
The pump's capacity to produce high pressure can be checked by the following procedure:
–With the ignition off, disconnect the low pressure actuator from the pump (IMV brown connector)
and connect a test IMV or the adapter of MOT. 1711.
–Electrically disconnect the four injectors.
–Switch on the ignition, connect the diagnostic tool and re-establish dialogue with the injection system.
–Go to the Main computer statuses and parameters screen.
–Run the test cold, PR064 "Coolant temperature" < 30
°C or equal to ambient temperature.
–Engage the starter for 5 seconds.
–Read the maximum rail pressure value PR038 Rail pressure during the test on the diagnostic tool.
A
DCM1.2_V48_TEST6/DCM1.2_V4C_TEST6/DCM1.2_V50_TEST6/DCM1.2_V54_TEST6/DCM1.2_V58_TEST6/DCM1.2_V5C_TEST6

13B-213V10 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
IMV = fuel flow actuator
TEST 6
CONTINUED
PR038 > 1050 bar?
–Switch off the ignition, reconnect the electrical
connections to the four injectors and the low-
pressure actuator.
–Switch on the ignition again, and clear the injection
faults using the diagnostic tool.
–Check if there is no fuel leak in the high pressure
circuit. Run TEST 7 High pressure circuit sealing
check.
–Check the conformity of the diesel filter. Run
TEST 9 Diesel filter check.
–Carry out fault finding on the injectors by checking
the return flow volume of the four injectors, run
TEST 8 Injector return flow.
Is TEST 8 OK?The pump can supply the operating pressure.
Switch off the ignition, reconnect the electrical
connections
to the four injectors and the low pressure
actuator. Switch on the ignition again, and clear
the injection faults using the diagnostic tool.
–Check if there is no fuel leak in the high
pressure circuit. Run TEST 7 "High pressure
circuit sealing check".
–Carry out fault finding on the injectors by
checking the return flow volume of the four
injectors, run TEST 8 Injector return flow.
If TEST 8 is correct, the high pressure fuel circuit
is correct.
Replace the faulty injector(s) (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, 13B, Diesel
injection, Diesel fuel injector:
Removal - Refitting).Replace the high pressure pump (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, 13B, Diesel
injection, High pressure pump: Removal - Refitting).
A
NOYES
NOYES

13B-215V10 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 8 Injector return flow
NOTESSpecial note:
Certain faults make it impossible to carry out this test - deal with these first.
Does the engine start?
Command AC029 High pressure circuit sealing also checks the return volume of each injector to detect
any leaks inside the injectors.
Be careful with any objects (tool or other) on the engine housing during the four cycles of the operation
(possible vibrations).
Tooling required
–Mot. 1711 Injector flow measuring kit.
Or: Use four tubes of internal diameter 4 mm and approximately 50 cm long, and four graduated measuring
cylinders.
Procedure
–Check that the engine coolant temperature is above 60
°C,
–switch off the ignition,
–disconnect the return pipes from the four injectors,
–cap the pump venturi tube to prevent the low-pressure circuit from depriming,
–connect the four transparent tubes in place of the return pipes,
–put the other ends of the four pipes into four graduated measuring cylinders.
When all the preparations are complete, start the engine and leave it running:
30 secondsfor Euro 4 engines: K9K 766 - 768 (Clio III and Modus); K9K 724 (Mégane II
and Scénic II); K9K 740 -718 (New Twingo); K9K 800 - 802 - 812 (Kangoo 2).
Let it idle for 2 minutesfor Euro 3 type engines: K9K 750 - 752 (Clio III and Modus).
Note:
These time periods must be respected for the test results to be interpreted correctly.
–Run command AC029 High pressure circuit sealing check.
The engine will carry out automatically a cycle of four accelerations to increase the rail pressure and measure
internal injector leaks under these conditions.
–When the cycle has finished, run command AC029 High pressure circuit sealing test a second time to
obtain the correct return volume reading for each injector.
–Switch off the engine at the end of the cycle.
NOA
YES
DCM1.2_V48_TEST8/DCM1.2_V4C_TEST8/DCM1.2_V50_TEST8/DCM1.2_V54_TEST8/DCM1.2_V58_TEST8/DCM1.2_V5C_TEST8

13B-216V10 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 8
CONTINUED 1
At the end of the idling phase and these two cycles, the return volume of each injector must be:
45 ml (maximum)for Euro 4 type engines: K9K 766 - 768 (Clio III and Modus); K9K 724 (Mégane
II and Scénic II) K9K 740 - 718 (New Twingo); K9K 800 - 802 - 812 (Kangoo 2).
35 ml maximumfor Euro 3 type engines: K9K 750 - 752 (Clio III and Modus),
If the back-leakage volume of any of the injectors is more than the values above, only replace the faulty injector
(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, 13B, Diesel injection, Diesel fuel injector: Removal - Refitting).
Disconnect the 4 transparent pipes and reconnect the injector return circuit.
Carry out the following test to confirm the repair:
–With the ignition off, disconnect the low pressure actuator from the pump (brown IMV connector) and connect
the test adapter (test IMV, Mot. 1711),
–electrically disconnect the 4 injectors,
–switch on the ignition, connect the diagnostic tool and re-establish dialogue with the injection system,
–go to the Main computer statuses and parameters screen,
–run the starter for 5 seconds,
–read the maximum rail pressure value PR038 Rail pressure during the test on the diagnostic tool.
If the rail pressure (PR038 Rail pressure) is lower than 1050 bar, run test 6: High pressure system check.
–Switch off the ignition, and reconnect the four injectors electrically,
–disconnect the test filling actuator (test IMV) and reconnect the low-pressure actuator connector (IMV) to the
pump,
–switch on the ignition again, and clear the injection faults using the diagnostic tool.
If the rail pressure (PR038) is greater than 1050 bar, the repair is correct.
End of TEST8.

13B-217V10 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 8
CONTINUED 2
If the engine does not start, only the static leakage can be measured, i.e. the leakage with the injector closed, not
actuated and under high pressure.
Make sure that the ignition circuit is working correctly (minimum engine speed 200 rpm).
Tooling required
–Mot. 1711 Injector flow measuring kit.
Or: Use four tubes of internal diameter 4 mm and approximately 50 cm long and a test adapter (TEST IMV).
Procedure
–Switch off the ignition,
–disconnect the return pipes from the four injectors,
–cap the pump venturi tube to prevent the low-pressure circuit from depriming,
–connect the four transparent pipes in place of the return pipes (Mot. 1711),
–disconnect the low pressure actuator from the pump (brown IMV connector) and connect a test IMV or
the Mot. 1711 adapter,
–disconnect the four injectors electrically,
–switch on the ignition and engage the starter for 5 seconds,
–measure the amount of diesel fuel in each pipe.
If the return leakage is greater than 10 cm, replace the injector(s) (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, 13B,
Diesel injection, Diesel fuel injector: Removal - Refitting).
Switch off the ignition, and reconnect the four injectors electrically.
Disconnect the test low pressure actuator and reconnect the low pressure actuator connector to the pump.
Disconnect the four transparent tubes and reconnect the injectors return circuit. Switch on the ignition again,
and clear the injection faults using the diagnostic tool.
Carry out the following test to confirm the repair:
–With the ignition off, disconnect the low pressure actuator from the pump (brown IMV connector)
and connect the test adapter (test IMV, Mot. 1711),
–disconnect the four injectors electrically,
–switch on the ignition, connect the diagnostic tool and re-establish dialogue with the injection system,
–go to the Main computer statuses and parameters screen,
–run the starter for 5 seconds,
–read the maximum rail pressure value PR038 Rail pressure during the test on the diagnostic tool.
If the rail pressure (PR038 Rail pressure) is lower than 1050 bar, run test 6: High pressure system check.
–Switch off the ignition, and reconnect the four injectors electrically,
–disconnect the test IMV and reconnect the low-pressure actuator connector to the pump,
–switch on the ignition again, and clear the injection faults using the diagnostic tool.
End of TEST 8.
A

13B-218V10 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 9 Diesel filter check
Check the conformity of the diesel filter.
Is the diesel filter in order?Replace the air filter with an original part
(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, 13A, Fuel
mixture, Air filter: Removal - Refitting).
–Switch off the ignition and analyse the diesel fuel in the diesel filter.
–Disconnect the diesel supply and return hoses from the filter.
–Block the filter inlets and outlets straight away with appropriate plugs.
–Remove the filter from its holder and shake it firmly while holding the caps in place. Tap the edge of the filter with
a screwdriver handle to detach any contamination. Empty the contents of the filter into a glass container by lifting
a protective plug, then loosening and completely removing the bleed screw.
Are black particles present on the bottom of the container?
Pass a magnet beneath the container to collect
all the metal particles. Take the magnet away
from the container.Diesel filter in good order.
Do the particles collected using the magnet
cover a surface area greater than 1 cm
2?
Replace the entire
injection system.Diesel filter in good
order.
NO
YES
YESNO
YESNO
DCM1.2_V48_TEST9/DCM1.2_V4C_TEST9/DCM1.2_V50_TEST9/DCM1.2_V54_TEST9/DCM1.2_V58_TEST9/DCM1.2_V5C_TEST9

13B-225V10 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 12 Turbocharger
IMPORTANT
Perform these checks without removing the turbocharger and with the vehicle ignition switched off.
Checking the turbocharger shaft
WARNING
Observe the following safety precautions:
–wear high temperature protective gloves when the engine is hot,
–do not wear oversize or baggy clothing or hanging jewellery,
–watch out for possible triggering of the motor-driven cooling fan unit and the operation of the accessories belt
or belts.
Note:
The turbocharger shaft is the shaft that connects the compressor wheel and the turbine wheel.
Depending on the vehicle type, the best visual access will be either from above or from below.
Disconnect the air pipe located between the turbocharger and the air filter.
Wearing gloves, check the operation of the turbocharger shaft by turning the vanes manually without forcing.
Does the shaft have a kickdown point in rotation?
Does the compressor wheel touch the casing of the turbocharger?
If for these 2
questions the
response is NOIf YES for one of these 2 questions
Replace the turbocharger (see MR 364 (Mégane II), 370 (Scénic II) 392
(Clio III), 385 (Modus), 411 (New Twingo) or 417 (Kangoo II),
Mechanical, 12B, Turbocharging, Turbocharger: Removal -
Refitting and Technical Note 3938A, Broken turbocharger:
Replacement instructions).
A
DCM1.2_V48_TEST12/DCM1.2_V4C_TEST12/DCM1.2_V50_TEST12/DCM1.2_V54_TEST12/DCM1.2_V58_TEST12/DCM1.2_V5C_TEST12

13B-233V10 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 14 Accelerator pedal check
Can the accelerator pedal be fully
depressed and does it return fully?Check that there are no obstructions between the floor
and the accelerator pedal, and check that the latter has no
points of resistance.
Vehicle under + after ignition feed.
Measure the voltage between
connections 3LR and 3LT of
component 921.Check the continuity and insulation of connections 3LR
and 3LT between components 921 and 120.
If the connection is faulty and there is a repair method
(see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the wiring,
otherwise replace it. Expected result:
4.75 V < X < 5.25 V
Vehicle under + after ignition feed.
Fully depress the accelerator pedal
and measure the voltage between
connections 3LS and 3LT of
component 921.Check the continuity and insulation of connection 3LS
between components 921 and 120.
If the connection is faulty and there is a repair method
(see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the wiring,
otherwise replace it.
If these checks are correct, replace the accelerator pedal
sensor (see MR 392 (Clio III), MR 364 (Mégane II), MR 370
(Scénic II), MR 417 (Kangoo 2), Mechanical, 37A,
Mechanical component controls, Accelerator pedal:
Removal – Refitting) or (see MR 385 (Modus), MR 411
(New Twingo), Mechanical, 37A, Mechanical
component controls, Accelerator brake pedal
assembly: Removal – Refitting). Expected result:
3.94 < X < 4.56 V
Vehicle under + after ignition feed.
Accelerator pedal in no load position,
measure the voltage between
connections 3LS and 3LT of
component 921.Replace the accelerator pedal sensor (see MR 392
(Clio III), MR 364 (Mégane II), MR 370 (Scénic II), MR 417
(Kangoo 2), Mechanical, 37A, Mechanical component
controls, Accelerator pedal: Removal – Refitting)
or (see MR 385 (Modus), MR 411 (New Twingo),
Mechanical, 37A, Mechanical component controls,
Accelerator brake pedal assembly: Removal –
Refitting). Expected result:
0.66 V < X < 0.84 VNO
YES
NO
YES
NO
YES
NO
YES
A
DCM1.2_V48_TEST14/DCM1.2_V4C_TEST14/DCM1.2_V50_TEST14/DCM1.2_V54_TEST14/DCM1.2_V58_TEST14/DCM1.2_V5C_TEST14