Page 202 of 329

13B-202
MR-372-J84-13B050$702.mif
V17
DIESEL INJECTION
Fault finding – Interpretation of parameters
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2
13B
PR041
TURBOCHARGING PRESSURE
PARAMETER
DEFINITIONThis parameter indicates the turbocharging pressure in mbar.
NOTESSpecial notes:
Only apply the checks if the parameter is inconsistent.
Use CLIO III, MODUS, MEGANE II ph2, SCENIC II ph2 and KANGOO II Wiring
diagrams Technical Note.
Conformity check with the engine stopped and the ignition on, or the engine running and the engine
coolant temperature > 80°C
With the vehicle ignition on and engine stopped:
– Remove the turbocharger pressure sensor.
– With the sensor connected to the harness, read the value of PR041 from the Parameter screen:
– If the value is not very close to PR035 Atmospheric pressure, maximum pressure difference between
PR035and PR041 with the engine stopped = ± 50 mbar:
Check the insulation and absence of interference resistance on the signal line and the turbocharging
pressure sensor power supply lines.
If the lines are correct, replace the turbocharging pressure sensor.
– Connect a vacuum pump or pressure pump to the turbocharger pressure sensor.
– Apply a pressure of between 0.1 and 1.3 bar (maximum pressure to be applied: 1.3 bar).
– Compare the pressure value displayed in the Parameter screen with that given by the vacuum pump:
If the difference* = ± 0.1 bar, replace the turbocharging pressure sensor.
If there is no discrepancy, the turbocharging pressure sensor is correct.
*Note:
The diagnostic tool displays the absolute pressure, the pressure gauge for the vacuum pump displays
therelative pressure: the normal difference between these two values is equal to the atmospheric pressure,
which is the value of PR035.
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
SID301_V44_PR041/SID304_V45_PR041/SID301_V48_PR041/SID304_V49_PR041/SID304_V4D_PR041/SID301_V4C_PR041
Page 211 of 329

13B-211
MR-372-J84-13B050$702.mif
V17
DIESEL INJECTION
Fault finding – Interpretation of parameters
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2
13B
PR078
INLET PRESSURE SENSOR VOLTAGE
PARAMETER
DEFINITIONThis parameter indicates the inlet pressure sensor voltage in volts.
NOTESSpecial notes:
Only perform these tests if the parameters do not correspond with the system
operation programming.
Conformity check with engine stopped and ignition on.
0.2 V < PR078 < 4.9 V
In the event of a fault, consult the interpretation of DF004 Turbocharging pressure sensor circuit.
Conformity check with the engine running and engine coolant temperature > 80°C
0.2 V < PR078 < 4.9 V
In the event of a fault, consult the interpretation of DF004 Turbocharging pressure sensor circuit.
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
SID301_V44_PR078/SID304_V45_PR078/SID301_V48_PR078/SID304_V49_PR078/SID304_V4D_PR078/SID301_V4C_PR078
Page 212 of 329

13B-212
MR-372-J84-13B050$702.mif
V17
DIESEL INJECTION
Fault finding – Interpretation of parameters
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2
13B
PR079
ATMOSPHERIC PRESSURE SENSOR VOLTAGE
PARAMETER
DEFINITIONThis parameter indicates the atmospheric pressure sensor voltage in volts.
NOTESSpecial notes:
Only perform these tests if the parameters do not correspond with the system
operation programming.
Conformity check with engine stopped and ignition on.
1.6 V < PR079 < 4.9 V
In the event of a fault, consult the interpretation of DF003 Atmospheric pressure sensor circuit.
Conformity check with the engine running and engine coolant temperature > 80°C
1.6 V < PR079 < 4.9 V
In the event of a fault, consult the interpretation of DF003 Atmospheric pressure sensor circuit.
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
SID301_V44_PR079/SID304_V45_PR079/SID301_V48_PR079/SID304_V49_PR079/SID304_V4D_PR079/SID301_V4C_PR079
Page 213 of 329
13B-213
MR-372-J84-13B050$702.mif
V17
DIESEL INJECTION
Fault finding – Interpretation of parameters
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2
13B
PR080
RAIL PRESSURE SENSOR VOLTAGE
PARAMETER
DEFINITIONThis parameter indicates the rail pressure sensor voltage in volts.
NOTESSpecial notes:
Only perform these tests if the parameters do not correspond with the system
operation programming.
Conformity check with the engine stopped and the ignition on, or the engine running and the engine
coolant temperature > 80°C
0 V < PR080 < 5 V
In the event of a fault, consult the interpretation of fault DF007 Rail pressure sensor circuit.
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
SID301_V44_PR080/SID304_V45_PR080/SID301_V48_PR080/SID304_V49_PR080/SID304_V4D_PR080/SID301_V4C_PR080
Page 224 of 329

13B-224
MR-372-J84-13B050$741.mif
V17
DIESEL INJECTION
Fault finding – Interpretation of parameters
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2
13B
PR132
AIR FLOW
PARAMETER
DEFINITIONThis parameter indicates the inlet air flow in mg/st.
NOTESSpecial notes:
Only perform these tests if the parameters do not correspond with the system
operation programming.
No faults must be present.
Perform this fault finding procedure:
– after finding an inconsistency in the parameter,
– or after a customer complaint (lack of power, smoke etc.).
Use CLIO III, MODUS, MEGANE II ph2, SCENIC II ph2 and KANGOO II Wiring
Diagrams Technical Notes.
Sensor electrical conformity
Check the air inlet circuit (from the air filter inlet to the inlet manifold, run test 10 Air line at the turbocharger):
– air filter unit inlet not blocked and filter not clogged,
–visual inspection only, use ALP2 The engine does not start or starts with difficulty,
– oil vapour recirculation circuit connected correctly,
–absence of leaks or blockages in the low and high pressure air circuits: ducts, presence and tightness
of the mounting clips, mounting of the turbocharging pressure sensor, exchanger, etc.
– check that the damper valve is not jammed shut (except Vdiag 4C).
Carry out the necessary repairs.
Check the electrical conformity of the air flow sensor:
Check the + 5 V supply to the air flowmeter.
– connection 3KJ of component 799.
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
SID301_V44_PR132 / SID304_V45_PR132 / SID301_V48_PR132 / SID304_V49_PR132 / SID304_V4D_PR132 / SID301_V4C_PR132
Page 228 of 329
13B-228
MR-372-J84-13B050$741.mif
V17
13B
DIESEL INJECTION
Fault finding – Interpretation of parameters
PR224
TURBOCHARGING PRESSURE SENSOR VOLTAGE
STATUS DEFINITIONThis parameter indicates the turbocharging pressure sensor voltage in volts.
NOTESSpecial notes:
Only perform these tests if the parameters do not correspond with the system
operation programming.
Conformity check with the engine stopped and the ignition on, or the engine running and the engine
coolant temperature > 80°C
0 V < PR224 < 5 V
In the event of a fault, refer to the interpretation of fault DF012 Sensor supply voltage no. 2.
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
SID301_V48_PR224 / SID301_V44_PR224 / SID301_V4C_PR224Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4C
Program No.: B1 and B2
Page 237 of 329
13B-237
MR-372-J84-13B050$780.mif
V17
DIESEL INJECTION
Fault finding – Interpretation of parameters
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2
13B
PR414
PARTICLE FILTER PRESSURE SENSOR
PARAMETER
DEFINITIONThis parameter indicates the particle filter differential pressure in mbar.
NOTESSpecial notes:
Only perform these tests if the parameters do not correspond with the system
operation programming.
Conformity check with the engine stopped and the ignition on, or engine running, and engine coolant
temperature > 80°C
The differential pressure monitors the status of the particle weight in the filter.
The differential pressure of the particle filter is given in mbar.
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
SID304_V4D_PR414/SID304_V45_PR414/SID304_V49_PR414/SID301_V4C_PR414
Page 244 of 329

13B-244
MR-372-J84-13B050$780.mif
V17
DIESEL INJECTION
Fault finding – Interpretation of parameters
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2
13B
*sens: sensor
*Circ: circuit
*diff: differential
*Press: PressurePR669
PARTICLE FILTER DIFF* PRESS* SENS* VOLTAGE
PARAMETER
DEFINITIONThis parameter indicates the voltage of the particle filter differential pressure sensor in
volts.
NOTESSpecial notes:
Only perform these tests if the parameters do not correspond with the system
operation programming.
Conformity check with the engine stopped and the ignition on, or the engine running and the engine
coolant temperature > 80°C
PR669 ≈5V
In the event of a fault, consult the interpretation of DF1003 Particle filter differential pressure sensor circuit.
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
SID304_V4D_PR669/SID304_V45_PR669/SID304_V49_PR669/SID301_V4C_PR669