tire pressure RENAULT SCENIC 2011 J95 / 3.G Engine And Peripherals Siemens Injection Workshop Manual

13B-5
MR-372-J84-13B050$039.mif
V17
DIESEL INJECTION
Fault finding – Introduction
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2
13B
4. FAULT FINDING PROCEDURE (continued)
Wiring check
Fault finding problems
Disconnecting the connectors and/or manipulating the wiring may temporarily remove the cause of a fault.
Electrical measurements of voltage, resistance and insulation are generally correct, especially if the fault is not
present when the analysis is made (stored fault).
Visual inspection
Look for damage under the bonnet and in the passenger compartment.
Carefully check the fuses, insulators and wiring harness routing.
Look for signs of oxidation.
Physical inspection
While manipulating the wiring, use the diagnostic tool to note any change in fault status from stored to present.
Make sure that the connectors are properly locked.
Apply light pressure to the connectors.
Twist the wiring harness.
If there is a change in status, try to locate the source of the fault.
Inspection of each component
Disconnect the connectors and check the appearance of the clips and tabs, as well as the crimping (no crimping on
the insulating section).
Make sure that the clips and tabs are properly locked in the sockets.
Check that no clips or tabs have been dislodged during connection.
Check the clip contact pressure using an appropriate model of tab.
Resistance check
Check the continuity of entire lines, then section by section.
Look for a short circuit to earth, to + 12 V or to another wire.
If a fault is detected, repair or replace the wiring harness.

13B-13
MR-372-J84-13B050$195.mif
V17
13B
DIESEL INJECTION
Fault finding – Function
SYSTEM FLOWCHART
The high pressure injection system is designed to deliver a precise quantity of diesel fuel to the engine at a set
moment.
The Siemens VDO piezo Common Rail system used on the K9K Step 2 engine is a second generation Common Rail
injection system. Fuel pressure in the rail can reach a maximum of 1650 bar.
The Siemens VDO piezo Common Rail system uses injectors which are controlled by piezoelectric actuators.
The fuel is pressurised by means of a high pressure pump then sent to a rail which supplies the four injectors.
The system includes two subsystems, which have different fuel pressure levels:
●the low pressure system which includes the tank, diesel fuel filter, internal fuel transfer pump and injector
return pipes,
●the high pressure system which includes the high pressure pump, rail, injectors and high pressure pipes.
There are a number of sensors and regulating actuators for controlling and monitoring the entire system.
It is fitted with a 112- track (or 128- track for Kangoo II) SIEMENS computer (SID 301 and SID 304).
The system comprises:
– a priming bulb,
– a diesel filter,
– a high pressure pump (HPP) with a fuel pressure solenoid valve (PCV), a fuel flow solenoid valve (VCV) and an
internal fuel transfer pump (ITP, low pressure pump),
– an injector rail,
– a rail pressure sensor,
– four piezoelectric injectors,
– a fuel temperature sensor,
– a coolant temperature sensor,
– a camshaft sensor,
– a TDC sensor,
– a turbocharger pressure sensor,
– an exhaust gas recirculation solenoid valve with integrated position sensor (EGR),
– an accelerator pedal potentiometer,
– an atmospheric pressure sensor integrated into the injection computer,
– an air mass flowmeter with integrated air temperature sensor,
– an air damper valve (Vdiag 44, 45, 48, 49 and 4D only),
– a temperature sensor upstream of the turbine,
– an antipollution system:
●a temperature sensor upstream of the particle filter (Vdiag 45, 49, 4D only),
●a temperature sensor downstream of the particle filter (Vdiag 45, 49, 4D only),
●a particle filter differential pressure sensor (Vdiag 45, 49, 4D only),
●a particle filter injector (Vdiag 45, 49, 4D only),
●a particle filter (Vdiag 45, 49, 4D only),
– a temperature sensor downstream of the catalytic converter,
– an electric fuel pump,
– an electric coolant pump (Vdiag 45, 49, 4D only),
– four heating elements and their control unit (Vdiag 45, 49, 4D only),
– four heater plugs,
– a water in the fuel detection sensor (optional).
MR-372-J84-13B050$195.mif
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2

13B-304
MR-372-J84-13B050$936.mif
V17
DIESEL INJECTION
Fault finding – Tests13B
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2
TEST 3 High pressure fuel pressure solenoid valve check
NOTESConditions prior to test:
The entire low pressure system must be in good condition.
Check the sealing of the high pressure pipes and unions.
Cause:
Rail pressure approximately 50 bar during starting.
Use CLIO III, MODUS, MEGANE II ph2, SCENIC II ph2 and Kangoo II Wiring
diagrams Technical Note.
Disconnect the fuel pressure solenoid valve
connector and measure the resistance at the
terminals of the fuel-pressure solenoid valve
between connection 3ZQ of connector B
computer and connection 3FB (or 3FB3 for
Kangoo II) of the Protection and Communication
Unit or the main injection relay.
Is the resistance between 1.5 Ω and 15 Ω?
YES
Check the wiring between the injection computer
and the fuel pressure solenoid valve.
Measure the voltage at connection 3FB on the
connector of the fuel pressure solenoid valve
with the ignition on.
Is the voltage the same as the battery voltage?
YES
Apply the conformity check for ET613 Fuel
pressure regulator
NOReplace the pump (see Replacement of
components).
NOCheck the connection and condition of the
connectors for the fuel pressure solenoid
valve and the main injection relay.
– connection code 3FB1 (or 3FB3 for
Kangoo II) between components
1105 and 983 or 1337.
If the connection is faulty and there is a
repair procedure (see Technical Note
6015A, Electrical wiring repair, Wiring:
Precautions for repair), repair the wiring,
otherwise replace it. Check the main
injection relay.
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
SID301_V44_TEST3 / SID304_V45_TEST3 / SID301_V48_TEST3 / SID304_V49_TEST3 / SID304_V4D_TEST3 / SID301_V4C_TEST3

13B-305
MR-372-J84-13B050$936.mif
V17
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2DIESEL INJECTION
Fault finding – Tests13B
TEST 4 Check high-pressure pump (HPP) and fuel flow solenoid valve.
NOTESConditions prior to test:
The entire low pressure system must be in good condition.
Check the sealing of the high pressure pipes and unions.
Test 3 High pressure fuel pressure solenoid valve check is OK.
Cause:
Not enough or no rail pressure during starting.
Rail reference pressure during starting, minimum 150 bar.
Use CLIO III, MODUS, MEGANE II ph2, SCENIC II ph2 and Kangoo II Wiring
diagrams Technical Note.
Remove the fuel flow solenoid valve connector (orange).
Measure the resistance of the fuel flow solenoid valve
connection code 3FB1 between the computer connector
and the injection main relay connector.
Is the resistance between 1.5 Ω and 15 Ω?
YES
Measure the voltage at the flow solenoid valve connector
connection code 3FB1 (or 3FB3 for Kangoo II) with the
ignition on.
Is the voltage the same as the battery voltage?
YES
Use parameter PR739 Fuel flow solenoid valve current
to check the excitation current when the starter is
activated.
Is the excitation current between 0.6A and 1A?
YES
NOReplace the pump.
NOCheck the connection and condition of
the connectors for the fuel pressure
solenoid valve and the main injection
relay.
– connection code 3FB1 (or 3FB3
for Kangoo II) between
components 1105 and 983 or
1337.
If the connection or connections are
faulty and there is a repair procedure
(see Technical Note 6015A,
Electrical wiring repair, Wiring:
Precautions for repair), repair the
wiring, otherwise replace it. Check the
main injection relay.
NO
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
SID301_V44_TEST4 / SID304_V45_TEST4 / SID301_V48_TEST4 / SID304_V49_TEST4 / SID304_V4D_TEST4 / SID301_V4C_TEST4
B
A

13B-313
MR-372-J84-13B050$936.mif
V17
DIESEL INJECTION
Fault finding – Tests13B
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2
TEST 6 Major leak in injectors/injectors open
NOTESConditions prior to test:
The entire low pressure system must be in good condition.
Check the sealing of the high pressure pipes and unions.
Te s t 3 High pressure fuel pressure solenoid valve check is OK.
Test 4 High pressure pump (HPP) and fuel flow solenoid valve check is OK.
Te s t 5 Rail high pressure regulation circuit check is OK.
Causes:
Not enough or no rail pressure during starting.
The engine does not start.
Use CLIO III, MODUS, MEGANE II ph2, SCENIC II ph2 and Kangoo II Wiring
diagrams Technical Note.
Measure the resistance at the injectors.
Resistance between 150 and 250 kΩ.
Measure at ambient temperature (approx. 20°C),
allow the engine to cool down for at least
30 minutes.
Is the resistance correct?
YES
NOReplace the corresponding injectors.
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
SID301_V44_TEST6 / SID304_V45_TEST6 / SID301_V48_TEST6 / SID304_V49_TEST6 / SID304_V4D_TEST6 / SID301_V4C_TEST6
A

13B-316
MR-372-J84-13B050$936.mif
V17
DIESEL INJECTION
Fault finding – Tests13B
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2
TEST 7 Incorrect injection quantity
NOTESConditions prior to test:
The entire low pressure system must be in good condition.
Check the sealing of the high pressure pipes and unions.
Te s t 3 High pressure fuel pressure solenoid valve check is OK.
Test 4 High pressure pump (HPP) and fuel flow solenoid valve check is OK.
Te s t 5 Rail high pressure regulation circuit check is OK.
All the electrical consumers are switched off.
Air conditioning is switched off.
Cause:
The engine runs poorly at idle speed, possibly emits white smoke.
Use CLIO III, MODUS, MEGANE II ph2, SCENIC II ph2 and KANGOO II Wiring
diagrams Technical Note.
Ignition off.
Measure the resistance at the injectors.
The reference resistance is between 150 and
250 kΩ.
Measure at ambient temperature (approx. 20°C),
allow the engine to cool down for at least
30 minutes.
Are the resistances correct?
YES
NOReplace the corresponding injectors.
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
SID301_V44_TEST7 / SID304_V45_TEST7 / SID301_V48_TEST7 / SID304_V49_TEST7 / SID304_V4D_TEST7 / SID301_V4C_TEST7
A