13B-147V1 MR-376-X76-13B000$130.mif
DIESEL INJECTION
Fault finding – Command summary table13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
Tool
commandDiagnostic tool title Comments
AC251 Heating resistor 2 relay.Activating this controls the heating resistor no. 2 relay to test
the heating resistor supply.
AC252 Heating resistor 3 relay.Activating this controls the heating resistor no. 3 relay to test
the heating resistor supply.
AC261 Water in fuel warning lightActivating this actuates the water present in fuel warning
light; this warning light is located on the instrument panel, if
fitted to the vehicle.
SC001 Write saved dataUse this command after replacing or (re)programming the
computer (if the data were saved using command SC003
Save computer data).
SC002 Enter injector codesThis command enables you to manually write the calibration
code marked on the injectors. Run this command after
replacing the injectors.
SC003 Save computer dataThis command saves the computer operating data, C2I
(individual injector correction) parameters and engine
programming adapters. Run this command before replacing
or (re)programming the computer.
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
13B-202V1 MR-376-X76-13B000$160.mif
DIESEL INJECTION
Fault finding – Tests13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
TEST 13 Diesel fuel conformity check
WARNING
During this operation, it is essential to:
– refrain from smoking or bringing incandescent objects close to the work area,
– guard against petrol splashes caused by the residual pressure in the pipes,
– wear safety goggles with side guards,
– wear leaktight gloves (Nitrile type).
IMPORTANT
– To avoid any corrosion or damage, protect the areas on which fuel is likely to run.
– To prevent impurities from entering the circuit, place protective plugs on all fuel circuit components
exposed to the open air.
Preparations:
Weigh an empty 1300 ml plastic cup (part no. 77 11 171 413) with its cover (part no. 77 11 171 416) using
electronic scales such as those used in body paint workshops (example: PANDA part no. 77 11 224 995). Record
the weight of the empty plastic cup.
This type of plastic cup is used to prepare paint.
Remove 1 l of fuel at the diesel filter outlet (see MR 388 (Logan/Sandero), MR 451 (Duster), MR 423 (Thalia
2/Symbol 2) or MR 374 (Kangoo VLL), Mechanical, 19C, Tank, Draining the fuel tank), using a pneumatic
transfer pump (part no. 634-200) and place it in the 1300 ml plastic cup.
Cover the plastic cup with its cover and let it settle for approximately 2 minutes.
Is the fuel cloudy or does
it separate into two
parts?Presence of water in diesel fuel, the fuel is not compliant.
Drain the fuel system, including the tank (see MR 388 (Logan/
Sandero), MR 451 (Duster), MR 423 (Thalia 2/Symbol 2) or MR 374
(Kangoo VLL), Mechanical, 19C, Tank, Draining the fuel tank).
YES
A
NO
DCM1.2_V08_TEST13
