2010 RENAULT SCENIC Engine And Pheripherals DCM 1.2 Injection Workshop Manual

13B-249V10 MR-372-J84-13B100$210.mif
DIESEL INJECTION
Fault finding – Fault finding charts13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
ALP9 Engine cut-out (stalling)
NOTESOnly consult this customer complaint after a full check with the diagnostic tool.
Check that the fuel tank is correctly filled and that the fuel is correct: run 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: run TEST 5 Air inlet circuit check.
Is the catalytic converter clogged or
damaged?Replace the catalytic converter (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, 19B, Exhaust, Catalytic
converter: Removal - Refitting).
Visually check the condition of the engine wiring harness.
Check the electrical circuit: run TEST 2 Electrical circuit check.
Check the low pressure circuit: run TEST 1 Low pressure circuit check.
Visually check that there are no leaks on the high pressure circuit: run TEST 7 High pressure circuit
sealing check.
YES
NO
A
DCM1.2_V48_ALP9/DCM1.2_V4C_ALP9/DCM1.2_V50_ALP9/DCM1.2_V54_ALP9/DCM1.2_V58_ALP9/DCM1.2_V5C_ALP9

13B-250V10 MR-372-J84-13B100$210.mif
DIESEL INJECTION
Fault finding – Fault finding charts13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
ALP9
CONTINUED
Check the injectors: run TEST 3 Injector check.
Check the high pressure system: run TEST 6 High pressure system check.
Check that the computer connectors are properly locked.
Check the condition of the computer connections (bent pin, signs of corrosion, silicone, etc.).
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.
Contact the Techline if the customer complaint is still present.
A

13B-251V10 MR-372-J84-13B100$210.mif
DIESEL INJECTION
Fault finding – Fault finding charts13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
ALP10 Engine bucking
NOTESSpecial note:
Only consult this customer complaint after a full check with the diagnostic tool.
See Feature, Function: Fuel supply management (timing, flow rate and pressure),
Flow capacity function (VLC) section.
Check that the fuel tank is correctly filled and that the fuel is correct: run TEST 13 Diesel fuel conformity check.
Check the low pressure circuit: run TEST 1 Low pressure 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.
Is the engine wiring harness cut or pinched? Carry out the necessary repairs.
Is the compression in order? Carry out the necessary repairs.
Is the valve clearance set correctly? Carry out the necessary repairs.
YES
NO
NO
YES
NO
YES
A
DCM1.2_V48_ALP10/DCM1.2_V4C_ALP10/DCM1.2_V50_ALP10/DCM1.2_V54_ALP10/DCM1.2_V58_ALP10/DCM1.2_V5C_ALP10

13B-252V10 MR-372-J84-13B100$210.mif
DIESEL INJECTION
Fault finding – Fault finding charts13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
ALP10
CONTINUED
The vehicle has entered the "Flow capacity function"
program. This function is activated more easily when:
the external temperature is high, the fuel level in the
tank is at 1/4, the vehicle is laden and if the vehicle
speed is high. Check the high pressure pump: run TEST 6
High pressure system check.
Is the "Flow capacity function"
programming active?
Check the computer:
Check that the computer connectors are
properly locked.
Check the condition of the computer
connections (bent pin, signs of corrosion,
silicone, etc.).
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.Check the diesel filter.
Has the diesel fuel filter reached its full mileage?
Contact the Techline if the customer complaint
is still present.
Replace the diesel filter (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, Fuel
filter: Removal - Refitting).
Contact the Techline if the customer complaint is still
present.
A
YES
NO
YES

13B-253V10 MR-372-J84-13B100$210.mif
DIESEL INJECTION
Fault finding – Fault finding charts13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
In this case, the lack of power is due to insufficient vacuum for the OCR * setpoint given.
ALP11 Loss of power
NOTESSpecial note:
Only consult this customer complaint after a complete check with the diagnostic tool.
See explanation for flow capacity function in system operation.
There is no turbocharging control solenoid valve on New Twingo K9K 740
engines or on Kangoo 2 K9K 800 engines.
Is the "Flow capacity function" programming
active?Check the diesel filter.
Is it close to the replacement mileage?
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.Replace the diesel filter (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, Fuel
filter: Removal - Refitting).
Check the air inlet circuit: run TEST 5 Air inlet circuit
check.
YES
NO
NO
YES
A
DCM1.2_V48_ALP11/DCM1.2_V4C_ALP11/DCM1.2_V50_ALP11/DCM1.2_V54_ALP11/DCM1.2_V58_ALP11/DCM1.2_V5C_ALP11

13B-254V10 MR-372-J84-13B100$210.mif
DIESEL INJECTION
Fault finding – Fault finding charts13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
* OCR: opening cyclic ratio
ALP11
CONTINUED 1
Is the engine oil level correct? Top up the oil level.
Is the catalytic converter clogged or damaged?Replace the catalytic converter (see MR
364 (Mégane II), MR 370 (Scénic II),
MR 385 (Modus), MR 392 (Clio III),
MR 411 (New Twingo), MR 417
(Kangoo 2), 19B, Exhaust, Catalytic
converter: Removal - Refitting).
A
NO
YES
YES
NO
B

13B-255V10 MR-372-J84-13B100$210.mif
DIESEL INJECTION
Fault finding – Fault finding charts13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
ALP11
CONTINUED 2
Check that the turbocharger is working properly.
Run TEST 11 Air line at the turbocharger.
Run TEST 10 Turbocharger control solenoid valve check.
Run TEST 12 Turbocharger.
Are the components in good condition? Carry out the necessary repairs.
Check the low pressure circuit: run TEST 1 Low pressure circuit check.
Check the injectors: run TEST 3 Injector check.
Check the high pressure system: run TEST 6 High pressure system check.
Is the compression in order? Carry out the necessary repairs.
Is the valve clearance set correctly? Carry out the necessary repairs.
Contact the Techline if the customer complaint is still
present.
B
NO
YES
NO
YES
NO
YES

13B-256V10 MR-372-J84-13B100$210.mif
DIESEL INJECTION
Fault finding – Fault finding charts13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
In this case, the control solenoid valve is jammed: the vacuum can increase, but it cannot then be
decreased.
ALP12 Too much power
NOTESOnly consult this customer complaint after a complete check with the diagnostic tool.
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: run TEST 5 Air inlet circuit check.
Check that the engine has not sucked up its oil (engine racing).
Check that the electrical and pneumatic connections of the turbocharger control solenoid valve are correct.
See TEST 10 Turbocharger control solenoid valve check.
Are all the electrical and pneumatic connections of
the turbocharger control solenoid valve correct?Reconnect the hoses and electrical
cables correctly, if necessary.
Are the solenoid valve pipes connected the wrong way
round?Reconnect the pipes correctly.
NO
YES
YES
NO
A
DCM1.2_V48_ALP12/DCM1.2_V4C_ALP12/DCM1.2_V50_ALP12/DCM1.2_V54_ALP12/DCM1.2_V58_ALP12/DCM1.2_V5C_ALP12