Page 54 of 204

13B-54
AFTER REPAIRDeal with any faults declared by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
V1 MR-376-X76-13B000$071.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
DF026
PRESENT
OR
STOREDCYLINDER 1 INJECTOR CONTROL CIRCUITCO: Open circuit
CC: Short circuit
1.DEF: At minimum stop
2.DEF: At maximum stop
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is present with the engine idling.
Special notes:
When this fault appears, the idle speed is locked at 1000 rpm, there is engine noise,
unsteady engine speed, engine performance reduced to 75% and the level 1 warning
light comes on until the next time the ignition is switched off.
Use the Wiring Diagrams Technical Note for Logan, Sandero, Duster, Thalia 2/
Symbol 2 or Kangoo VLL.
CO
CC
NOTESNone.
Switch off the ignition and wait 15 seconds.
Check the connection and condition of the injector 1 connector, component code 193.
Check the connection and condition of the injection computer connector, component code 120.
If the connectors are faulty and if there is a repair procedure (see Technical Note 6015A (Renault) or Technical
Note 9804A (Dacia), Electrical wiring repair, Wiring: Precautions for repair), repair the connectors, otherwise
replace the wiring.
Run command AC005 Cylinder 1 injector.
If injector 1 cannot be heard operating five times in a cycle, connect the wire of the injector of cylinder 2 to the
injector of cylinder 1 and use command AC006 Cylinder 2 injector.
Does this injector actuation cycle work?
Note:
If the wires cannot be swapped, continue the procedure by replying YES to the previous question.
DCM1.2_V08_DF026
Page 145 of 204

13B-145V1 MR-376-X76-13B000$130.mif
13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
Tool command Diagnostic tool title Comments
RZ001Fault memoryThis command is used for clearing the computer's stored
faults
RZ002EGR programming adaptivesUse this command when replacing the EGR valve (not
applicable to K9K796 Euro 2).
RZ004Pressure regulation adaptivesUse this command when simultaneously replacing the four
injectors and after replacing/retightening the accelerometer.
It enables you to reset the injector adaptives.
RZ005ProgrammingThis command enables you to reinitialise the entire computer
configuration.
AC001Preheating unitActivating this controls the preheating unit to test the heater
plug supply.
AC002EGR solenoid valveActivating this enables an audible check of the mechanical
operation of the EGR valve (not applicable to K9K796
Euro 2).
AC004Turbocharging solenoid valveActivating this enables an audible check of the operation of
the turbocharging solenoid valve.
AC005Cylinder 1 injectorActivating this enables an audible check of the injector on
cylinder 1.
AC006Cylinder 2 injectorRunning this allows you to you listen to the injector on
cylinder 2 when operating.
AC007Cylinder 3 injectorActivating this enables an audible check of the injector on
cylinder 3.
AC008Cylinder 4 injectorActivating this enables an audible check of the injector on
cylinder 4.
AC010High pressure pumpActivating this lets you listen to the operation of the high-
pressure pump.
AC028Static testActivating this enables fault finding to be run on the EGR,
high pressure pump and water in fuel warning light circuits
DIESEL INJECTION
Fault finding – Command summary table
Page 159 of 204

13B-159
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
ALP4
CONTINUED
Control the injectors using commands:
– AC005 Cylinder 1 injector,
– AC006 Cylinder 2 injector,
– AC007 Cylinder 3 injector,
– AC008 Cylinder 4 injector.
Can you hear the valve moving when you are 1 metre
from the vehicle?Run TEST 9 Diesel filter check.
If the test is correct, only replace the faulty
injector(s) (see MR 388 (Logan/Sandero),
MR 451 (Duster), MR 423 (Thalia 2/Symbol
2) or MR 374 (Kangoo VLL), Mechanical,
13B, Diesel injection, Diesel injector:
Removal - Refitting).
Check the high pressure system by running TEST 6 High pressure system 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.
A
NO
YES
Page 189 of 204
13B-189V1 MR-376-X76-13B000$160.mif
DIESEL INJECTION
Fault finding – Tests13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
TEST 3 Injector check
Conduct a visual inspection around the injectors.
Is there diesel fuel around the injectors?Locate the source of the leak and carry out the
necessary repairs.
Control the injectors using the commands:
– AC005 Cylinder 1 injector,
– AC006 Cylinder 2 injector,
– AC007 Cylinder 3 injector,
– AC008 Cylinder 4 injector.
Can you hear the valve moving when you are 1
metre 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) (see MR 388 (Logan/Sandero) or MR
451 (Duster), MR 423 (Thalia 2/Symbol 2) or MR
374 (Kangoo VLL), Mechanical, 13B, Diesel
injection, Diesel injector: Removal - Refitting).
End of test 3.YES
NO
NO
YES
DCM1.2_V08_TEST03