Page 8 of 204

13B-8V1 MR-376-X76-13B000$020.mif
DIESEL INJECTION
Fault finding – Cleanliness guidelines13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
II - INSTRUCTIONS TO BE FOLLOWED BEFORE CARRYING OUT ANY WORK
Ensure that you have plugs for the unions to be opened (set of plugs available from the Parts Department). Plugs
are to be used only once. They must be discarded after use (once used they are soiled and cleaning is not sufficient
to make them reusable). Unused plugs must be thrown away.
Ensure that you have hermetically resealable plastic bags for storing removed parts. Parts stored in this way will be
less susceptible to the risk of contamination. The bags are to be used once only, and discarded after use.
Use lint-free cleaning cloths (cloth part reference 77 11 211 707). The use of ordinary cloth or paper is not permitted.
They are not lint-free and could contaminate the fuel circuit. A lint-free cloth should only be used once.
Use fresh cleaning agent for each operation (used cleaning agent is contaminated). Pour it into a clean receptacle.
For each operation, use a clean brush in good condition (the brush must not shed its bristles).
Use a brush and cleaning agent to clean the unions to be opened.
Blow compressed air over the cleaned parts (tools, workbench, the parts, unions and injection system zones).
Check that no bristles are left.
Wash your hands before and during the operation if necessary.
When wearing leather protective gloves cover them with latex gloves to prevent contamination.IMPORTANT
Before carrying out any work on the high pressure injection system, protect:
– the accessories belts,
– the electrical accessories, (starter, alternator, electric power-assisted steering pump),
– the flywheel surface, to prevent any diesel from running onto the clutch friction plate.
– timing chain
Page 152 of 204

13B-152
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
ALP2 The engine will not start
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 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).
Check the electrical circuit by running TEST 2 Electrical circuit check.
Check the electrical conformity of the heater plugs (the resistance of the heater plug must be less than 2 ).
YES
NO
A
DCM1.2_V08_ALP02
Page 155 of 204

13B-155
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
ALP3 The engine starts with difficulty, or starts then stalls
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 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).
Check the electrical conformity of the heater plugs (the resistance of the heater plug must be less than 2 ).
YES
NO
A
DCM1.2_V08_ALP03
Page 163 of 204

13B-163
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
ALP7 Erratic acceleration/deceleration and engine racing
NOTESOnly address this customer complaint after a complete check with the diagnostic
tool.
Check that the engine has not sucked up its oil (engine racing).
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
Visually check the condition of the engine wiring harness.
Check the injectors by running TEST 3 Injector check.
Check the condition of the computer connections (for bent pins, signs of oxidation, silicone, etc.) and check that
the computer connectors lock correctly.
Contact the Techline if the customer complaint is still present.
DCM1.2_V08_ALP07
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 170 of 204

13B-170
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
ALP11 Loss of power
NOTESSpecial note:
Only address this customer complaint after a complete check with the diagnostic
tool.
See explanation for flow capacity function in system operation.
Is status ET563 Flow capacity function "ACTIVE"?
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 codesCheck the diesel filter.
Is it close to the replacement mileage?
Replace the diesel filter (see MR 388 (Logan/Sandero),
MR 451 (Duster), MR 423 (Thalia 2/Symbol 2) or MR
374 (Kangoo VLL), Mechanical, 13A, Fuel supply, Fuel
filter: Removal - Refitting).
Check the air inlet circuit by running TEST 5 Inlet circuit check.
Is the engine oil level correct? Top up the oil level.
NOYES
NO
YES
NO
A
YES
DCM1.2_V08_ALP11
Page 172 of 204

13B-172
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 Too much power
NOTESOnly address this customer complaint after a complete check with the diagnostic
tool.
In this case, the control solenoid valve is jammed: it is possible to increase the vacuum but not reduce it
afterwards.
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
Check the air inlet circuit by running TEST 5 Inlet circuit check.
Check that the engine has not sucked up its oil (engine racing).
Check that the turbocharger is working properly.
Run TEST 11 Air line at the turbocharger.
Run TEST 10 Turbocharger solenoid valve check.
Run TEST 12 Turbocharger.
Check the condition of the computer connections (for bent pins, signs of oxidation, silicone, etc.) and check that
the computer connectors lock correctly.
Contact the Techline if the customer complaint is still present.
DCM1.2_V08_ALP12
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