Page 124 of 204

13B-124V1 MR-376-X76-13B000$080.mif
DIESEL INJECTION
Fault finding – Conformity check13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
PARAMETER CHECK (CONTINUED 2)
NOTESOnly perform this conformity check after a thorough check with the diagnostic tool.
The values shown in this conformity check are given as a guide.
Application conditions: Engine stopped, ignition on.
FunctionParameter or status
checked or actionDisplay and notes Fault finding
Battery voltagePR074:Battery
voltage12 V < PR074 < 14.4 V.In the event of a fault, run
fault finding on the
Charging circuit (see
Technical Note 6014A
(Renault) or Technical
Note 9859A (Dacia),
Checking the charging
circuit).
Air flowPR018:Estimated air
flowEstimation of the air flow by the
injection computer given in mg/st.NONE
Fuel flowPR017:Fuel flowPR017 = 0.0 mg/st
Gives the fuel flow at the high
pressure pump outlet in mg/st.NONE
Rail pressurePR038:Rail pressureEngine stopped: 1bar.
Indicates the pressure in bar of the
diesel fuel in the injector rail. This
pressure is supplied by the sensor
on the rail.
Default value: 2000 bar.If there is a fault, use the
interpretation of fault
DF007 Rail pressure
sensor circuit.
PR008:Rail reference
pressurePR008 = 375 bar (Engine starting
pressure setpoint)
Cold: 405 bar
Warm: 230 bar
Gives the theoretical pressure
value for optimum engine
operation.NONE
Page 131 of 204

13B-131V1 MR-376-X76-13B000$080.mif
DIESEL INJECTION
Fault finding – Conformity check13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
PARAMETER CHECK (CONTINUED 1)
NOTESOnly perform this conformity check after a complete check using the diagnostic tool.
The values shown in this conformity check are given as a guide.
Application conditions: Engine idling, warm engine, coolant temperature > 80°C.
FunctionParameter or status
checked or actionDisplay and notes Fault finding
Air
temperaturePR058:Air
temperatureGives the inlet air temperature
in °C. This information is
supplied by the air
temperature sensor
incorporated in the air
flowmeter.
Default value: 20°C.In the event of a problem, consult
the interpretation of fault DF056
Air flow sensor circuit.
Fuel
temperaturePR063:Fuel
temperatureCold = PR064 Coolant
temperature
Warm: 50°C
Gives the fuel temperature in
°C. This value is measured by
the fuel temperature sensor.
Default value: 30°C.If there is a fault, use the
interpretation of fault DF098 Fuel
temperature sensor circuit.
Atmospheric
pressurePR035:Atmospheric
pressureIndicates the atmospheric
pressure in mbar. The sensor
is built into the computer. In the event of inconsistency,
with the engine stopped and
ignition on, check that parameter
PR035PR312local
atmospheric pressure. Inlet manifold
vacuumPR312:Inlet manifold
vacuumIndicates the pressure in the
inlet circuit in mbar.
Battery voltagePR074:Battery voltage12 V < PR074 < 14.4 V.In the event of a fault, apply the
fault finding procedure for the
Charging circuit.
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 188 of 204

13B-188V1 MR-376-X76-13B000$160.mif
DIESEL INJECTION
Fault finding – Tests13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
TEST 2 Electrical circuit check
Check the battery charge and that the alternator is
working properly (see Technical Note 6014A
(Renault) or Technical Note 9859A (Dacia),
Checking the charging circuit).
Is the charging circuit in good order? Carry out the necessary repairs
Check the fuses (see MR 388 (Logan/Sandero),
MR 451 (Duster), MR 423 (Thalia 2/Symbol 2) or
MR 374 (Kangoo VLL), Mechanical, 81C, Fuses,
Fuses: List and location of components).
Are the fuses correct? Carry out the necessary repairs
Check that the injection locking relay is operating
correctly.
Is the injection locking relay working properly? Carry out the necessary repairs
Check the engine earths (see Wiring Diagrams
Technical Note for the vehicle).
Are the engine earths correct? Carry out the necessary repairs
The electrical circuit is in good order.
NO
YES
NO
YES
NO
YES
NO
YES
DCM1.2_V08_TEST02
Page 200 of 204

13B-200V1 MR-376-X76-13B000$160.mif
DIESEL INJECTION
Fault finding – Tests13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
TEST 11 Turbocharger air chain
Check for the air filter
Check the replacement interval of the air filter on the maintenance booklet.
Compare the part numbers of the air filter fitted to the vehicle and that of the air filter recommended by the
manufacturer.
Check the air filter direction of fitting.
Is the air filter fitted to the vehicle correct?
Check the condition of the air filter
Visually inspect the condition of the filtering section of the
air filter.
Is either the air filter or its seal damaged?
Is the air filter fouled (does it contain a lot of
impurities)?Replace the air filter (see MR 388
(Logan/Sandero), MR 423
(Thalia 2/Symbol 2), MR 451
(Duster) or MR 374 (Kangoo
VLL), Mechanical, 12A, Fuel
mixture, Air filter: Removal -
Refitting).
Low pressure circuit check
Note:
Depending on the vehicle type, the best visual access will
be either from above or from below.
Visually inspect the condition of the following
components:
– fresh air inlet scoop on the front panel of the vehicle,
– air inlet pipe to the air filter,
– air pipe of the filter until the compressor inlet,
– mountings of the air flowmeter.
Is one of these components incorrect (disconnected,
cut, bent, pierced or kinked pipes)?Replace the faulty parts (see MR
388 (Logan/Sandero), MR 451
(Duster), MR 423 (Thalia 2/
Symbol 2) or MR 374 (Kangoo
VLL), Mechanical, 12B,
Turbocharging).
YESNO
YES
NO
YES
A
NO
DCM1.2_V08_TEST11
Page 201 of 204

13B-201V1 MR-376-X76-13B000$160.mif
DIESEL INJECTION
Fault finding – Tests13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
TEST 11
CONTINUED
High pressure circuit check
Note:
Depending on the vehicle type, the best visual access will be either
from above or from below.
Visually inspect the condition of the following components:
– the compressor outlet pipe to the turbocharging air cooler (the
turbocharging air cooler does not exist for all engines),
– outlet pipe of the turbocharging air cooler to the inlet manifold,
– inlet manifold,
– temperature and pressure sensors.
Is one of these components incorrect (disconnected, cut, bent,
pierced or kinked pipes)?Replace the faulty parts
(see MR 388 (Logan/
Sandero), MR 451
(Duster), MR 423 (Thalia
2/Symbol 2) or MR 374
(Kangoo VLL),
Mechanical, 12B,
Turbocharging). Exhaust system check
– Visually inspect the condition of the following engine sections:
– from the exhaust manifold circuit to the turbocharger turbine,
– from the turbine outlet pipe to the end of the exhaust pipe,
– from the inlet manifold to the EGR valve
– check that the temperature and pressure sensors are connected.
Do some of these components have black or white marks on
them?
Run TEST 10 Turbocharger solenoid valve check.
A
YES
NO
YES
NO