Page 376 of 510

13B-376V12 MR-372-J84-13B300$122.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR157FUEL FLOW SETPOINT
PARAMETER
DEFINITIONThis parameter indicates the fuel flow setpoint 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 setpoint value must be:
PR157 = 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: Fuel flow = PR157.
In the event of a fault, refer to the interpretation of fault DF897.
EDC16CP33_V18_PR157 / EDC16CP33_V1C_PR157 / EDC16CP33_V54_PR157 / EDC16CP33_V20_PR157 / EDC16CP33_V58_PR157 /
EDC16CP33_V5C_PR157 / EDC16CP33_V24_PR157 / EDC16CP33_V04_PR157 / EDC16CP33_V08_PR157 / EDC16CP33_V44_PR157 /
EDC16CP33_V4C_PR157 / EDC16CP33_V34_PR157 / EDC16CP33_V38_PR157 / EDC16CP33_V74_PR157 / EDC16CP33_V28_PR157 /
EDC16CP33_V62_PR157 / EDC16CP33_V26_PR157 / EDC16CP33_V60_PR157
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
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 377 of 510

13B-377V12 MR-372-J84-13B300$122.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR171AIR FLOW SETPOINT FOR EGR
PARAMETER
DEFINITIONThis parameter indicates the fuel flow setpoint 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, or engine running, and engine coolant
temperature > 80°C
Indicates the air flow required by the EGR valve
EDC16CP33_V18_PR171 / EDC16CP33_V1C_PR171 / EDC16CP33_V54_PR171 / EDC16CP33_V20_PR171 / EDC16CP33_V58_PR171 /
EDC16CP33_V5C_PR171 / EDC16CP33_V24_PR171 / EDC16CP33_V04_PR171 / EDC16CP33_V08_PR171 / EDC16CP33_V44_PR171 /
EDC16CP33_V4C_PR171 / EDC16CP33_V34_PR171 / EDC16CP33_V38_PR171 / EDC16CP33_V74_PR171 / EDC16CP33_V28_PR171 /
EDC16CP33_V62_PR171 / EDC16CP33_V26_PR171 / EDC16CP33_V60_PR171
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 378 of 510

13B-378V12 MR-372-J84-13B300$122.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR190IDLE SPEED SETPOINT
PARAMETER
DEFINITIONThis parameter indicates the engine's rotational speed in rpm.
NOTESNone.
Conformity check with engine stopped and ignition on.
With the ignition on, the engine speed value must be:
PR190 = 800 rpm or PR190 = 850 rpm (depending on the vehicle).
In the event of a fault, refer to the interpretation of faults DF195 Camshaft sensor / engine speed consistency,
DF119 Camshaft sensor signal and DF120 Engine speed sensor signal.
Conformity check with the engine running and engine coolant temperature > 80°C
With the engine running at idle speed, the engine speed value must be:
PR190 = 800 rpm or PR190 = 850 rpm (depending on the vehicle).
In the event of a fault, refer to the interpretation of faults DF195, DF119 and DF120.
The difference between the engine idle speed and its setpoint must be less than 50 rpm.
EDC16CP33_V18_PR190 / EDC16CP33_V1C_PR190 / EDC16CP33_V54_PR190 / EDC16CP33_V20_PR190 / EDC16CP33_V58_PR190 /
EDC16CP33_V5C_PR190 / EDC16CP33_V24_PR190 / EDC16CP33_V04_PR190 / EDC16CP33_V08_PR190 / EDC16CP33_V44_PR190 /
EDC16CP33_V4C_PR190 / EDC16CP33_V34_PR190 / EDC16CP33_V38_PR190 / EDC16CP33_V74_PR190 / EDC16CP33_V28_PR190 /
EDC16CP33_V62_PR190 / EDC16CP33_V26_PR190 / EDC16CP33_V60_PR190
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 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 380 of 510

13B-380V12 MR-372-J84-13B300$122.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR213RAIL PRESSURE LOOP DIFFERENCE
PARAMETER
DEFINITIONThis parameter indicates the rail pressure loop difference 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 rail pressure loop difference value must be:
PR213 = PR008 Rail pressure setpoints - PR038 Rail pressure.
In the event of a fault, consult the interpretation of fault DF007 Rail pressure sensor circuit.
EDC16CP33_V18_PR213 / EDC16CP33_V1C_PR213 / EDC16CP33_V54_PR213 / EDC16CP33_V20_PR213 / EDC16CP33_V58_PR213 /
EDC16CP33_V5C_PR213 / EDC16CP33_V24_PR213 / EDC16CP33_V04_PR213 / EDC16CP33_V08_PR213 / EDC16CP33_V44_PR213 /
EDC16CP33_V4C_PR213 / EDC16CP33_V34_PR213 / EDC16CP33_V38_PR213 / EDC16CP33_V74_PR213 / EDC16CP33_V28_PR213 /
EDC16CP33_V62_PR213 / EDC16CP33_V26_PR213 / EDC16CP33_V60_PR213
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.
Page 382 of 510

13B-382V12 MR-372-J84-13B300$122.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR225AIR FLOW SENSOR VOLTAGE
PARAMETER
DEFINITIONThis parameter indicates the air flow sensor voltage in volts.
NOTESSpecial notes:
Only perform these tests if the parameters do not correspond with the system
operation programming.
There must be no faults present.
Perform this fault finding procedure:
– after finding an inconsistency in the parameter,
– or after a customer complaint (lack of power, smoke etc.).
Conformity check: Engine stopped and ignition on, or engine running, and engine coolant
temperature > 80°C
The air flow sensor voltage value must be between:
0 V < PR225 < 5 V.
In the event of a fault, consult the interpretation of parameter DF056 Air flow sensor circuit.
EDC16CP33_V18_PR225 / EDC16CP33_V1C_PR225 / EDC16CP33_V54_PR225 / EDC16CP33_V20_PR225 / EDC16CP33_V58_PR225 /
EDC16CP33_V5C_PR225 / EDC16CP33_V24_PR225 / EDC16CP33_V04_PR225 / EDC16CP33_V08_PR225 / EDC16CP33_V44_PR225 /
EDC16CP33_V4C_PR225 / EDC16CP33_V34_PR225 / EDC16CP33_V38_PR225 / EDC16CP33_V74_PR225 / EDC16CP33_V28_PR225 /
EDC16CP33_V62_PR225 / EDC16CP33_V26_PR225 / EDC16CP33_V60_PR225
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 383 of 510
13B-383V12 MR-372-J84-13B300$122.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR290AC REFRIGERANT PRESSURE SENSOR VOLTAGE
PARAMETER
DEFINITIONThis parameter indicates the refrigerant pressure sensor voltage in volts.
NOTESNone.
Conformity check with engine stopped and ignition on, or engine running, and engine coolant
temperature > 80°C
The refrigerant pressure sensor voltage value must be between:
0 V ≤ PR290 ≤ 5 V.
Carry out fault finding on the climate control computer (see62B, Climate control).
EDC16CP33_V18_PR290 / EDC16CP33_V1C_PR290 / EDC16CP33_V54_PR290 / EDC16CP33_V20_PR290 / EDC16CP33_V58_PR290 /
EDC16CP33_V5C_PR290 / EDC16CP33_V24_PR290 / EDC16CP33_V60_PR290 / EDC16CP33_V62_PR290
EDC16CP33
Program No.: C4
Vdiag No.: 18, 1C, 20, 24,
54, 58, 5C, 60, 62
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.