Page 333 of 510

13B-333
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
PR007RAIL PRESSURE REGULATOR CURRENT SETPOINT
PARAMETER
DEFINITIONThis parameter indicates the theoretical setpoint for the current absorbed by the rail
pressure regulator in mA.
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
This parameter indicates the theoretical current absorbed by the rail pressure regulator in mA.
EDC16CP33_V18_PR007 / EDC16CP33_V1C_PR007 / EDC16CP33_V54_PR007 / EDC16CP33_V20_PR007 / EDC16CP33_V58_PR007 /
EDC16CP33_V5C_PR007 / EDC16CP33_V24_PR007 / EDC16CP33_V04_PR007 / EDC16CP33_V08_PR007 / EDC16CP33_V44_PR007 /
EDC16CP33_V4C_PR007 / EDC16CP33_V34_PR007 / EDC16CP33_V38_PR007 / EDC16CP33_V74_PR007 / EDC16CP33_V28_PR007 /
EDC16CP33_V62_PR007 / EDC16CP33_V26_PR007 / EDC16CP33_V60_PR007
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 334 of 510

13B-334
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
PR008RAIL REFERENCE PRESSURES
PARAMETER
DEFINITIONThis parameter indicates the theoretical rail pressure value for optimum engine
operation in bar.
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 theoretical rail pressure value must be between:
200 bar < PR008 < 300 bar.
EDC16CP33_V18_PR008 / EDC16CP33_V1C_PR008 / EDC16CP33_V54_PR008 / EDC16CP33_V20_PR008 / EDC16CP33_V58_PR008 /
EDC16CP33_V5C_PR008 / EDC16CP33_V24_PR008 / EDC16CP33_V04_PR008 / EDC16CP33_V08_PR008 / EDC16CP33_V44_PR008 /
EDC16CP33_V4C_PR008 / EDC16CP33_V34_PR008 / EDC16CP33_V38_PR008 / EDC16CP33_V74_PR008 / EDC16CP33_V28_PR008 /
EDC16CP33_V62_PR008 / EDC16CP33_V26_PR008 / EDC16CP33_V60_PR008
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 335 of 510

13B-335
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
PR009TURBOCHARGING PRESSURE SETPOINTS
PARAMETER
DEFINITIONThis parameter indicates the theoretical turbocharging pressure setpoint value in bar.
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 theoretical turbocharging pressure value is a setpoint of:
PR009 ≈ 1 bar.
EDC16CP33_V18_PR009 / EDC16CP33_V1C_PR009 / EDC16CP33_V54_PR009 / EDC16CP33_V20_PR009 / EDC16CP33_V58_PR009 /
EDC16CP33_V5C_PR009 / EDC16CP33_V24_PR009 / EDC16CP33_V04_PR009 / EDC16CP33_V08_PR009 / EDC16CP33_V44_PR009 /
EDC16CP33_V4C_PR009 / EDC16CP33_V34_PR009 / EDC16CP33_V38_PR009 / EDC16CP33_V74_PR009 / EDC16CP33_V28_PR009 /
EDC16CP33_V62_PR009 / EDC16CP33_V26_PR009 / EDC16CP33_V60_PR009
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 336 of 510
13B-336
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
PR015ENGINE TORQUE
PARAMETER
DEFINITIONThis parameter indicates the engine torque in Nm.
NOTESNone.
Conformity check: Engine running, engine coolant temperature > 80°C, without electrical consumers
The engine torque value must be between:
20 N.m < PR015 < 40 N.m.
This parameter is only valid when the engine is running.
EDC16CP33_V04_PR015 / EDC16CP33_V08_PR015 / EDC16CP33_V44_PR015 / EDC16CP33_V4C_PR015 / EDC16CP33_V34_PR015 /
EDC16CP33_V38_PR015 / EDC16CP33_V74_PR015
EDC16CP33
Program No.: C4
VDiag No.: 04, 08, 34, 38,
44, 4C, 74
Page 337 of 510

13B-337
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
PR017FUEL FLOW
PARAMETER
DEFINITIONThis parameter indicates the fuel flow in mg/st.
NOTESSpecial notes:
Only perform these tests if the parameters do not correspond with the system
operation programming.
Conformity check: Engine stopped and ignition on
The fuel flow value must be:
PR017 = 0 mg/st (ignition on).
In the event of a fault, consult the interpretation of DF897 Pump pressure regulator circuit.
Conformity check with the engine running and engine coolant temperature > 80°C
Engine running: PR017 = PR157: Fuel flow setpoint.
In the event of a fault, refer to the interpretation of fault DF897.
EDC16CP33_V18_PR017 / EDC16CP33_V1C_PR017 / EDC16CP33_V54_PR017 / EDC16CP33_V20_PR017 / EDC16CP33_V58_PR017 /
EDC16CP33_V5C_PR017 / EDC16CP33_V24_PR017 / EDC16CP33_V04_PR017 / EDC16CP33_V08_PR017 / EDC16CP33_V44_PR017 /
EDC16CP33_V4C_PR017 / EDC16CP33_V34_PR017 / EDC16CP33_V38_PR017 / EDC16CP33_V74_PR017 / EDC16CP33_V28_PR017 /
EDC16CP33_V62_PR017 / EDC16CP33_V26_PR017 / EDC16CP33_V60_PR017
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 338 of 510

13B-338
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
PR022EGR VALVE POSITION FEEDBACK LOOP DIFFERENCE
PARAMETER
DEFINITIONThis parameter indicates the percentage difference between the setpoint and the EGR
valve position.
NOTESSpecial notes:
Only perform these tests if the parameters do not correspond with the system
operation programming.
Conformity check: Engine stopped and ignition on
This parameter indicates the percentage difference between the setpoint and the EGR valve position.
In the event of a fault, consult the interpretation of faults DF209 EGR valve position sensor circuit and DF647
EGR valve position regulation.
Conformity check with the engine running and engine coolant temperature > 80°C
The PR022 value must be between:
- 5% < PR022 < + 5%.
In the event of a fault, refer to the interpretation of faults DF209 and DF647.
EDC16CP33_V18_PR022 / EDC16CP33_V1C_PR022 / EDC16CP33_V54_PR022 / EDC16CP33_V20_PR022 / EDC16CP33_V58_PR022 /
EDC16CP33_V5C_PR022 / EDC16CP33_V24_PR022 / EDC16CP33_V04_PR022 / EDC16CP33_V08_PR022 / EDC16CP33_V44_PR022 /
EDC16CP33_V4C_PR022 / EDC16CP33_V34_PR022 / EDC16CP33_V38_PR022 / EDC16CP33_V74_PR022 / EDC16CP33_V28_PR022 /
EDC16CP33_V62_PR022 / EDC16CP33_V26_PR022 / EDC16CP33_V60_PR022
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 339 of 510
13B-339
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
PR023DIFFERENCE IN AIR FLOW
PARAMETER
DEFINITIONThis parameter indicates the difference between the inlet air flow and the air entering
the engine in mg/st.
NOTESNone.
Conformity check: Engine stopped and ignition on, or engine running, and engine coolant
temperature > 80°C
In the event of a fault, consult the interpretation of fault DF056 Air flow sensor circuit.
EDC16CP33_V04_PR023 / EDC16CP33_V08_PR023 / EDC16CP33_V44_PR023 / EDC16CP33_V4C_PR023 / EDC16CP33_V34_PR023 /
EDC16CP33_V38_PR023 / EDC16CP33_V74_PR023 / EDC16CP33_V26_PR023 / EDC16CP33_V28_PR023 / EDC16CP33_V60_PR023 /
EDC16CP33_V62_PR023
EDC16CP33
Program No.: C4
VDiag No.: 04, 08, 26, 28,
34, 38, 44, 4C, 60, 62, 74
Page 340 of 510

13B-340
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
PR030ACCELERATOR PEDAL POSITION
PARAMETER
DEFINITIONThis parameter indicates the accelerator pedal position as a percentage.
NOTESThere 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, etc.).
Conformity check: Engine stopped and ignition on, or engine running, and engine coolant
temperature > 80°C
If no pressure is being applied to the pedal PR030 = 0%.
In the event of a fault, consult the interpretation of DF196 Pedal sensor circuit gang 1 or DF198 Pedal sensor
circuit gang 2.
Sensor electrical conformity
Check the continuity and absence of interference resistance of the following connections:
–3LR between components 120 and 921,
–3LS between components 120 and 921,
–3LT between components 120 and 921,
–3LU between components 120 and 921,
–3LW between components 120 and 921,
–3LV between components 120 and 921.
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.
EDC16CP33_V18_PR030 / EDC16CP33_V1C_PR030 / EDC16CP33_V54_PR030 / EDC16CP33_V20_PR030 / EDC16CP33_V58_PR030 /
EDC16CP33_V5C_PR030 / EDC16CP33_V24_PR030 / EDC16CP33_V04_PR030 / EDC16CP33_V08_PR030 / EDC16CP33_V44_PR030 /
EDC16CP33_V4C_PR030 / EDC16CP33_V34_PR030 / EDC16CP33_V38_PR030 / EDC16CP33_V74_PR030 / EDC16CP33_V28_PR030 /
EDC16CP33_V62_PR030 / EDC16CP33_V26_PR030 / EDC16CP33_V60_PR030
EDC16CP33
Program No.: C4
VDiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 60, 62, 74