Page 342 of 510

13B-342
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V12 MR-372-J84-13B300$121.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR035ATMOSPHERIC PRESSURE
PARAMETER
DEFINITIONThis parameter indicates the atmospheric pressure in bar. The sensor is integrated in
the computer.
NOTESSpecial notes:
Only perform these tests if the parameters do not correspond with the system
operation programming.
Conformity check: Engine stopped and ignition on, or engine running, and engine coolant
temperature > 80°C
The atmospheric pressure value must be between:
0.80 bar < PR035 < 1.20 bar.
In the event of a fault, consult the interpretation of fault DF004 Turbocharging pressure sensor circuit and
DF200 Atmospheric pressure sensor.
EDC16CP33_V18_PR035 / EDC16CP33_V1C_PR035 / EDC16CP33_V54_PR035 / EDC16CP33_V20_PR035 / EDC16CP33_V58_PR035 /
EDC16CP33_V5C_PR035 / EDC16CP33_V24_PR035 / EDC16CP33_V04_PR035 / EDC16CP33_V08_PR035 / EDC16CP33_V44_PR035 /
EDC16CP33_V4C_PR035 / EDC16CP33_V34_PR035 / EDC16CP33_V38_PR035 / EDC16CP33_V74_PR035 / EDC16CP33_V28_PR035 /
EDC16CP33_V62_PR035 / EDC16CP33_V26_PR035 / EDC16CP33_V60_PR035
EDC16CP33
Program No.: C4
VDiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 60, 62, 74
Page 346 of 510

13B-346
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V12 MR-372-J84-13B300$121.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR041TURBOCHARGING PRESSURE
PARAMETER
DEFINITIONThis parameter indicates the turbocharging pressure in bar.
NOTESNone.
Conformity check with engine stopped and ignition on, or engine running, and engine coolant
temperature > 80°C
The turbocharging pressure value must be:
PR041 = PR035 Atmospheric pressure + /- 0.20 bar.
In the event of a fault, consult the interpretation of DF004 Turbocharging pressure sensor circuit.
EDC16CP33_V18_PR041 / EDC16CP33_V1C_PR041 / EDC16CP33_V54_PR041 / EDC16CP33_V20_PR041 / EDC16CP33_V58_PR041 /
EDC16CP33_V5C_PR041 / EDC16CP33_V24_PR041 / EDC16CP33_V04_PR041 / EDC16CP33_V08_PR041 / EDC16CP33_V44_PR041 /
EDC16CP33_V4C_PR041 / EDC16CP33_V34_PR041 / EDC16CP33_V38_PR041 / EDC16CP33_V74_PR041 / EDC16CP33_V28_PR041 /
EDC16CP33_V62_PR041 / EDC16CP33_V26_PR041 / EDC16CP33_V60_PR041
EDC16CP33
Program No.: C4
VDiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 60, 62, 74
Page 347 of 510

13B-347
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V12 MR-372-J84-13B300$121.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR041
CONTINUED
Sensor electrical conformity
Check the continuity and absence of interference resistance of the following connections:
•3LQ between components 120 and 1071,
•3LP between components 120 and 1071,
•3LN between components 120 and 1071.
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.
Vehicle with the ignition on, and the engine stopped for at least 1 minute:
Compare the values of PR041 Turbocharging pressure and PR035 Atmospheric pressure.
If the difference between PR041 and PR035 is greater than 0.1 bar,
check the value of PR035 by comparing it with the reading on a vehicle in the workshop which is correct.
If the value of PR035 is not correct (difference greater than 0.1 bar between the 2 vehicles), contact the Techline.
Otherwise (when the value of PR035 is correct), replace the turbocharger pressure sensor.
If the difference between PR041 and PR035 is less than 0.1 bar.
Start the engine, with the engine idling:
Compare the values of PR041 and PR035.
If the difference between PR041 and PR035 is greater than 0.2 bar.
Check the air inlet circuit:
Apply Test 4 Turbocharged air inlet circuit check.
Low and high pressure air circuit sealed and not obstructed: ducts, mounting clamps present and tightened,
turbocharging pressure sensor fitted, exchanger, etc.
Check that the damper valve is not jammed closed.
Repair if necessary.
EDC16CP33
Program No.: C4
VDiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 60, 62, 74
Page 348 of 510

13B-348
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V12 MR-372-J84-13B300$121.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR042FILTERED TURBOCHARGING PRESSURE
PARAMETER
DEFINITIONThis parameter indicates the filtered turbocharging pressure in bar.
NOTESNone.
Conformity check with engine stopped and ignition on, or engine running, and engine coolant
temperature > 80°C
PR042 corresponds to the average value of PR041 Turbocharging pressure.
EDC16CP33_V18_PR042 / EDC16CP33_V1C_PR042 / EDC16CP33_V54_PR042 / EDC16CP33_V20_PR042 / EDC16CP33_V58_PR042 /
EDC16CP33_V5C_PR042 / EDC16CP33_V24_PR042 / EDC16CP33_V04_PR042 / EDC16CP33_V08_PR042 / EDC16CP33_V44_PR042 /
EDC16CP33_V4C_PR042 / EDC16CP33_V34_PR042 / EDC16CP33_V38_PR042 / EDC16CP33_V74_PR042 / EDC16CP33_V28_PR042 /
EDC16CP33_V62_PR042 / EDC16CP33_V26_PR042 / EDC16CP33_V60_PR042
EDC16CP33
Program No.: C4
VDiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 60, 62, 74
Page 360 of 510

13B-360
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V12 MR-372-J84-13B300$121.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR074BATTERY VOLTAGE
PARAMETER
DEFINITIONThis parameter indicates the battery voltage in volts.
NOTESSpecial notes:
Only perform these tests if the parameters do not correspond with the system
operation programming.
Conformity check: Engine stopped and ignition on, or engine running, and engine coolant
temperature > 80°C
The battery voltage value must be between:
8.5 V < PR074 < 15 V.
Test the battery and run fault finding on the charging circuit (see Technical Note 6014A, Charging circuit check).
EDC16CP33_V18_PR074 / EDC16CP33_V1C_PR074 / EDC16CP33_V54_PR074 / EDC16CP33_V20_PR074 / EDC16CP33_V58_PR074 /
EDC16CP33_V5C_PR074 / EDC16CP33_V24_PR074 / EDC16CP33_V04_PR074 / EDC16CP33_V08_PR074 / EDC16CP33_V44_PR074 /
EDC16CP33_V4C_PR074 / EDC16CP33_V34_PR074 / EDC16CP33_V38_PR074 / EDC16CP33_V74_PR074 / EDC16CP33_V28_PR074 /
EDC16CP33_V62_PR074 / EDC16CP33_V26_PR074 / EDC16CP33_V60_PR074
EDC16CP33
Program No.: C4
VDiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 60, 62, 74
Page 370 of 510

13B-370
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V12 MR-372-J84-13B300$121.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
OCR*: Opening Cyclic Ratio
SV*: Solenoid valve
PR104TURBOCHARGING SV* OCR* SETPOINT
PARAMETER
DEFINITIONThis parameter indicates the turbocharging solenoid valve opening ratio percentage.
NOTESNone.
Conformity check: Engine stopped and ignition on, or engine running, and engine coolant
temperature > 80°C
PR104 ≈ PR846 TURBOCHARGING SOLENOID VALVE OCR, these 2 values must be similar.
In the event of a fault, consult the interpretation of fault DF054 EGR valve position sensor circuit.
EDC16CP33_V18_PR104 / EDC16CP33_V1C_PR104 / EDC16CP33_V54_PR104 / EDC16CP33_V20_PR104 / EDC16CP33_V58_PR104 /
EDC16CP33_V5C_PR104 / EDC16CP33_V24_PR104 / EDC16CP33_V04_PR104 / EDC16CP33_V08_PR104 / EDC16CP33_V44_PR104 /
EDC16CP33_V4C_PR104 / EDC16CP33_V34_PR104 / EDC16CP33_V38_PR104 / EDC16CP33_V74_PR104 / EDC16CP33_V28_PR104 /
EDC16CP33_V62_PR104 / EDC16CP33_V26_PR104 / EDC16CP33_V60_PR104
EDC16CP33
Program No.: C4
VDiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 60, 62, 74
Page 379 of 510

13B-379V12 MR-372-J84-13B300$122.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR209TURBOCHARGING PRESSURE LOOP DIFFERENCE
PARAMETER
DEFINITIONThis parameter indicates the turbocharging pressure loop difference in bar.
NOTESNone.
Conformity check: Engine running, engine coolant temperature > 80°C, without electrical consumers.
The turbocharging pressure loop difference value must be:
PR209 = PR009 Turbocharging pressure setpoint - PR041 Turbocharging pressure = ~ 0.
If PR209 is significant, refer to the interpretation of the command AC004 Turbocharging solenoid valve.
EDC16CP33_V18_PR209 / EDC16CP33_V1C_PR209 / EDC16CP33_V54_PR209 / EDC16CP33_V20_PR209 / EDC16CP33_V58_PR209 /
EDC16CP33_V5C_PR209 / EDC16CP33_V24_PR209 / EDC16CP33_V04_PR209 / EDC16CP33_V08_PR209 / EDC16CP33_V44_PR209 /
EDC16CP33_V4C_PR209 / EDC16CP33_V34_PR209 / EDC16CP33_V38_PR209 / EDC16CP33_V74_PR209 / EDC16CP33_V28_PR209 /
EDC16CP33_V62_PR209 / EDC16CP33_V26_PR209 / EDC16CP33_V60_PR209
EDC16CP33
Program No.: C4
Vdiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 60, 62, 74
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
Page 381 of 510

13B-381V12 MR-372-J84-13B300$122.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR224TURBOCHARGING PRESSURE SENSOR VOLTAGE
PARAMETER
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: Engine stopped and ignition on, or engine running, and engine coolant
temperature > 80°C
The turbocharger sensor voltage value must be between:
0 V < PR224 < 5 V.
In the event of a fault, consult the interpretation of faults DF011 Sensor supply voltage no. 1, DF012 Sensor
supply voltage no. 2 and DF013 Sensor supply voltage no. 3.
EDC16CP33_V18_PR224 / EDC16CP33_V1C_PR224 / EDC16CP33_V54_PR224 / EDC16CP33_V20_PR224 / EDC16CP33_V58_PR224 /
EDC16CP33_V5C_PR224 / EDC16CP33_V24_PR224 / EDC16CP33_V04_PR224 / EDC16CP33_V08_PR224 / EDC16CP33_V44_PR224 /
EDC16CP33_V4C_PR224 / EDC16CP33_V34_PR224 / EDC16CP33_V38_PR224 / EDC16CP33_V74_PR224 / EDC16CP33_V28_PR224 /
EDC16CP33_V62_PR224 / EDC16CP33_V26_PR224 / EDC16CP33_V60_PR224
EDC16CP33
Program No.: C4
Vdiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 60, 62, 74
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.