Page 166 of 204
13B-166
AFTER REPAIRCarry out a road test followed by a check with the diagnostic tool.
V1 MR-376-X76-13B000$150.mif
DIESEL INJECTION
Fault finding – Fault Finding Chart13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
ALP9 Engine cut-out (stalling)
NOTESOnly address this customer complaint after a complete check with the diagnostic
tool.
Check that the fuel tank is correctly filled and that the appropriate fuel is used.
Apply test 13 Diesel fuel conformity check.
Check the levels of engine oil and coolant.
Check that the engine has not sucked up its oil (engine racing).
Check the air inlet circuit by running TEST 5 Inlet circuit check.
Is the catalytic converter clogged or damaged?Replace the catalytic converter (see MR
388 (Logan/Sandero), MR 451 (Duster),
MR 423 (Thalia 2/Symbol 2) or MR 374
(Kangoo VLL), Mechanical, 19B,
Exhaust, Catalytic converter: Removal
- Refitting).
Visually check the condition of the engine wiring harness.
YES
NO
A
DCM1.2_V08_ALP09
Page 173 of 204

13B-173
AFTER REPAIRCarry out a road test followed by a check with the diagnostic tool.
V1 MR-376-X76-13B000$150.mif
DIESEL INJECTION
Fault finding – Fault Finding Chart13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
ALP12
CONTINUED 1
In this case, it may be the solenoid valve dynamic specification which is at fault (atmospheric pressure
resetting time). Final fault finding is carried out by measuring this specification on a special bench.
Check that solenoid valve casing does not have any splashes of fluid on it which may impede the breather (water,
engine oil, gearbox oil, brake fluid, coolant, mud, dust, or any other substance).
Instructions:
The solenoid valve must be set up 450 mm above the ground, in an area free from water, mud, or any other fluid.
Cleaning with a high pressure jet is forbidden.
Is there coolant present?
Is the solenoid valve subjected to significant fluctuations or impacts?
Instructions:
The solenoid valve must be correctly secured to its mounting.
Contact with the engine environment is forbidden.Follow the
recommendations below.
Check the turbocharger regulation control (no
partial jamming, etc.).Follow the recommendations below.
NOYES
NOYES
AA
Page 175 of 204

13B-175
AFTER REPAIRCarry out a road test followed by a check with the diagnostic tool.
V1 MR-376-X76-13B000$150.mif
DIESEL INJECTION
Fault finding – Fault Finding Chart13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
ALP 13 Excessive consumption
NOTESOnly address this customer complaint after a complete check with the diagnostic
tool.
Check that the fuel tank is correctly filled and that the appropriate fuel is used.
Apply TEST 13 Diesel fuel conformity check.
Check the levels of engine oil and coolant.Replace the fuel temperature sensor (see MR
388 (Logan/Sandero), MR 423 (Thalia 2/Symbol
2), MR 451 (Duster) or MR 374 (Kangoo VLL),
Mechanical, 13B, Diesel injection, Rail pressure
sensor: Removal - Refitting). Is the fuel temperature sensor leaking?
Check the low pressure circuit by running TEST 1 Low pressure circuit check.
Visually check that there are no leakages on the high pressure circuit by running TEST 7 High pressure circuit
sealing check.
Check the air inlet circuit by running TEST 5 Inlet circuit check.
Using the diagnostic tool, check that the injector codes (C2I) are correctly entered on the identification screen. If
not, configure the correct injector codes using command SC002 Enter injector codes
YES
NO
A
DCM1.2_V08_ALP13
Page 180 of 204

13B-180
AFTER REPAIRCarry out a road test followed by a check with the diagnostic tool.
V1 MR-376-X76-13B000$150.mif
DIESEL INJECTION
Fault finding – Fault Finding Chart13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
ALP16 Engine rattling, noisy engine, turbocharger noise
NOTESOnly address this customer complaint after a complete check with the diagnostic
tool.
If the noise is coming from the turbocharger, apply the Technical Note 5164A, Fault finding of noises.
Note:
Pay close attention to faulty components that might result in unjustified replacement of the turbocharger. For
example, whistling does not necessarily indicate damage to the turbocharger (this could be coming from the
exhaust, the timing, the gearbox, etc.).
Check that the fuel tank is correctly filled and that the fuel is correct by running TEST 13 Diesel fuel conformity
check.
Check the levels of engine oil and coolant.
Is the compression in order? Carry out the necessary repairs.
Check the electrical conformity of the heater plugs (the resistance value of the heater plug must be less than
2).
NO
YES
A
DCM1.2_V08_ALP16
Page 182 of 204

13B-182
AFTER REPAIRCarry out a road test followed by a check with the diagnostic tool.
V1 MR-376-X76-13B000$150.mif
DIESEL INJECTION
Fault finding – Fault Finding Chart13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
ALP17 Blue, white or black smoke
NOTESOnly address this customer complaint after a complete check with the diagnostic
tool.
Check that the fuel tank is correctly filled and that the appropriate fuel is used.
Apply TEST 13 Diesel fuel conformity check.
Check the levels of engine oil and coolant.
Is the compression in order? Carry out the necessary repairs
Check the electrical conformity of the heater plugs (the resistance of the heater plug must be less than 2 ).
Is the catalytic converter clogged or damaged?Replace the catalytic converter (see MR 388
(Logan/Sandero), MR 451 (Duster), MR 423
(Thalia 2/Symbol 2) or MR 374 (Kangoo VLL),
Mechanical, 19B, Exhaust, Catalytic
converter: Removal - Refitting).
Check the air inlet circuit by running TEST 5 Inlet circuit check.
NO
YES
YES
NO
A
DCM1.2_V08_ALP17
Page 184 of 204

13B-184
AFTER REPAIRCarry out a road test followed by a check with the diagnostic tool.
V1 MR-376-X76-13B000$150.mif
DIESEL INJECTION
Fault finding – Fault Finding Chart13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
ALP18 Blue, black or white smoke when accelerating.
NOTESOnly address this customer complaint after a complete check with the diagnostic
tool.
Check that the fuel tank is correctly filled and that the appropriate fuel is used.
Apply TEST 13 Diesel fuel conformity check.
Check the levels of engine oil and coolant.
Check that the engine has not sucked up its oil (engine racing).
Is the compression in order? Carry out the necessary repairs.
Check the electrical conformity of the heater plugs (the resistance of the heater plug must be less than 2 ).
Is the catalytic converter clogged or damaged?Replace the catalytic converter (see MR 388
(Logan/Sandero), MR 451 (Duster), MR 423
(Thalia 2/Symbol 2) or MR 374 (Kangoo VLL),
Mechanical, 19B, Exhaust, Catalytic converter:
Removal - Refitting).
Check the air inlet circuit by running TEST 5 Inlet circuit check.
NO
YES
YES
NO
A
DCM1.2_V08_ALP18
Page 191 of 204

13B-191V1 MR-376-X76-13B000$160.mif
DIESEL INJECTION
Fault finding – Tests13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
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. Apply TEST 1 Low pressure circuit check.
– Ensure that the correct fuel is being used. Apply 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 MOT adapter. 1711 adapter.
– 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.
–Activate the starter for 5 seconds.
– Read the maximum rail pressure value PR038 Rail pressure during the test on the diagnostic tool.
PR038 > 1050 bar?
A
NO
B
YES
DCM1.2_V08_TEST06
Page 194 of 204

13B-194V1 MR-376-X76-13B000$160.mif
DIESEL INJECTION
Fault finding – Tests13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
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 around 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 pipes with internal diameter 4mm and approximately 50 cm in length, and four graduated
measuring cylinders.
Procedure
– Ensure 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.
NOA
YES
DCM1.2_V08_TEST08