Page 279 of 431

13B-279
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V9 MR-372-J84-13B450$151.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR041
CONTINUED
Sensor electrical conformity
Check the continuity and absence of interference resistance on the following connections:
– connection code 3LQ,
– connection code 3LP,
– connection code 3LN.
between components 120 and 1071.
If any of the connections are faulty and there is a repair method (see Technical Note 6015A, Electrical wiring
repair, Wiring: precautions for repairs), repair the wiring; otherwise replace the wiring.
Vehicle with ignition on, and the engine stopped for over 1 minute:
Compare the values of PR041 and PR035 Atmospheric pressure.
If the difference between PR041 and PR035 Atmospheric pressure is greater than 0.1 bar,
check the value of PR035 "Atmospheric pressure" by comparing it with the reading on a vehicle in the workshop
which is correct.
If the value of PR035 Atmospheric pressure is not correct (difference greater than 0.1 bar between the 2
vehicles), contact the Techline.
Otherwise (when the value PR035 Atmospheric pressure is correct), change the turbocharging pressure sensor.
If the difference between PR041 and PR035 Atmospheric pressure is greater than 0.1 bar.
Start the engine, with the engine idling:
Compare the values of PR041 and PR035 Atmospheric pressure.
If the difference between PR041 and PR035 Atmospheric pressure is greater than 0.2 bar.
Check the air inlet circuit:
The low and high pressure air circuit is sealed and not obstructed: the pipes and mounting clamps are present
and tightened, turbocharging pressure sensor, intercooler, etc. are fitted.
Check that the damper valve is not jammed closed.
Repair if necessary.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
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13B-280
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V9 MR-372-J84-13B450$151.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR045POWER REQUESTED BY THERMOPLUNGERS
PARAMETER
DEFINITIONThis parameter indicates the power consumed by the thermoplungers in watts.
NOTESSpecial note:
Only perform these tests if the parameters do not correspond with the system
operation programming.
This parameter exists on certain vehicles in Vdiag 48 (depending on equipment).
Engine running, engine coolant temperature > 80°C, with no electrical consumers
0
If the parameter value is not within this range, consult the interpretation of faults:
– DF032 Thermoplunger 1 relay control circuit,
– DF033 Thermoplunger 2 relay control circuit,
– DF034 Thermoplunger 3 relay control circuit.
Engine stopped, ignition on
PR045=0W
In the event of a fault, consult the interpretation of faults:
– DF032 Thermoplunger 1 relay control circuit,
– DF033 Thermoplunger 2 relay control circuit,
– DF034 Thermoplunger 3 relay control circuit.
EDC16C36_V48_PR045/EDC16C36_V58_PR045EDC16 C36
Program No.: 91
Vdiag No.: 48, 58
Page 281 of 431

13B-281
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V9 MR-372-J84-13B450$151.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
* OCR: opening cycle ratio
PR048RAIL PRESSURE REGULATION VALVE OCR*
PARAMETER
DEFINITIONThis parameter indicates the turbocharger pressure opening cyclic ratio in %.
NOTESSpecial notes:
Only perform these tests if the parameters do not correspond with the system
operation programming.
Engine running, engine coolant temperature > 80°C
The value must be between 35 < PR048 < 45%
In the event of a fault, consult the interpretation of fault DF007 Rail pressure sensor circuit.
Engine stopped, ignition on
The value should be: PR048 = 15%
In the event of a fault, consult the interpretation of faults DF007 Rail pressure sensor circuit and DF053 Rail
pressure regulation function.
EDC16C36_V44_PR048/EDC16C36_V4C_PR048/EDC16C36_V48_PR048/EDC16C36_V50_PR048/EDC16C36_V54_PR048/
EDC16C36_V58_PR048EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
Page 282 of 431

13B-282
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V9 MR-372-J84-13B450$151.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR051EGR VALVE POSITION FEEDBACK
PARAMETER
DEFINITIONThis parameter indicates the EGR valve opening ratio.
NOTESSpecial notes:
Only perform these tests if the parameters do not correspond with the system
operation programming.
There must be no present or stored faults.
Perform this fault finding procedure:
– after finding an inconsistency in the parameter,
– after a customer complaint (loss of power, smoke etc.).
– after interpretation of command AC103 EGR by-pass.
Use Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2.
Conformity check with engine stopped and ignition on, or engine running, and engine coolant
temperature > 80°C
This parameter indicates the EGR valve opening ratio.
In the event of a fault, consult the interpretation of faults DF209 EGR valve position sensor circuit and DF647
EGR valve position regulation.
EDC16C36_V44_PR051/EDC16C36_V4C_PR051/EDC16C36_V48_PR051/EDC16C36_V50_PR051/EDC16C36_V54_PR051/
EDC16C36_V58_PR051EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
Page 284 of 431
13B-284
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V9 MR-372-J84-13B450$151.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR053SPEED REQUESTED BY HEATING/AIR CONDITIONING
PARAMETER
DEFINITIONThis parameter indicates the engine's speed of rotation with air conditioning in rpm.
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
Indicates the engine's speed of rotation with air-conditioning in rpm.
PR035 = 0 rpm.
Conformity check with engine running, engine coolant temperature > 80°C
The speed requested by the air-conditioning is increased and varies around 850 rpm.
EDC16C36_V44_PR053/EDC16C36_V4C_PR053/EDC16C36_V48_PR053/EDC16C36_V50_PR053/EDC16C36_V54_PR053/
EDC16C36_V58_PR053EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
Page 285 of 431

13B-285
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V9 MR-372-J84-13B450$151.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR055ENGINE SPEED
PARAMETER
DEFINITIONThis parameter indicates the engine's rotational speed in rpm.
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
PR055 = 0 rpm.
In the event of a fault, consult interpretation of faults DF195 Camshaft sensor/engine speed consistency,
DF119 Camshaft sensor signal and DF120 Engine speed sensor signal.
Conformity check with engine running, engine coolant temperature > 80°C
With the engine running at idle speed the value is approximately 800 rpm.
In the event of a fault, consult interpretation of faults DF195 Camshaft sensor/engine speed consistency,
DF119 Camshaft sensor signal and DF120 Engine speed sensor signal.
EDC16C36_V44_PR055/EDC16C36_V4C_PR055/EDC16C36_V48_PR055/EDC16C36_V50_PR055/EDC16C36_V54_PR055/
EDC16C36_V58_PR055EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
Page 286 of 431

13B-286
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V9 MR-372-J84-13B450$151.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR058AIR TEMPERATURE
PARAMETER
DEFINITIONThis parameter indicates the air inlet temperature in °C.
NOTESSpecial notes:
Only perform these tests if the parameters do not correspond with the system
operation programming.
There must be no present or stored faults.
Perform this fault finding procedure:
– after finding an inconsistency in the parameter,
– after a customer complaint (e.g. lack of power).
Use Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2.
Conformity check with engine stopped and ignition on
With the ignition on the inlet air temperature varies according to the exterior temperature.
Default value: 20°C
In the event of a fault, consult the interpretation of fault DF002 Air temperature sensor circuit.
Parameter PR059 ≈ PR064 Coolant temperature engine cold.
Conformity check with engine running, engine coolant temperature > 80°C
With the engine running at idle speed the inlet air temperature varies according to the engine coolant temperature.
Default value: 20°C
In the event of a fault, consult the interpretation of fault DF002 Air temperature sensor circuit.
EDC16C36_V44_PR058/EDC16C36_V4C_PR058/EDC16C36_V48_PR058/EDC16C36_V50_PR058/EDC16C36_V54_PR058/
EDC16C36_V58_PR058EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
Page 288 of 431

13B-288
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V9 MR-372-J84-13B450$151.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR063FUEL TEMPERATURE
PARAMETER
DEFINITIONThis parameter indicates the fuel temperature in °C.
NOTESSpecial notes:
Only perform these tests if the parameters do not correspond with the system
operation programming.
There must be no present or stored faults.
Perform this fault finding procedure:
– after finding an inconsistency in the parameter,
– after a customer complaint (e.g. lack of power).
Use Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2.
Conformity check with engine stopped and ignition on, or engine running, and engine coolant
temperature > 80°C
This parameter indicates the fuel temperature: - 30°C < PR063 < 90°C
Default value: 100°C
In the event of a fault, see the interpretation of DF098 Fuel temperature sensor circuit.
EDC16C36_V44_PR063/EDC16C36_V4C_PR063/EDC16C36_V48_PR063/EDC16C36_V50_PR063/EDC16C36_V54_PR063/
EDC16C36_V58_PR063EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58