Page 268 of 365
13B-268
MR-372-J84-13B200$648.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of parameters
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
* Temp: TemperaturePR381
PARTICLE FILTER DOWNSTREAM TEMPERATURE
PARAMETER
DEFINITIONThis parameter indicates the particle filter downstream temperature in °C.
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 with the engine running and the engine
coolant temperature > 80°C.
PR381 ≈ PR382 Particle filter upstream temperature ≈ ± 200°C.
In the event of a fault, refer to the interpretation of faults DF309 Particle filter downstream temp* sensor and
DF310 Particle filter upstream temp* sensor.
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16_V50_PR381/EDC16_V58_PR381/EDC16_V5C_PR381/EDC16_V18_PR381/EDC16_V1C_PR381/EDC16_V20_PR381
Page 269 of 365
13B-269
MR-372-J84-13B200$648.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of parameters
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
* Temp: TemperaturePR382
PARTICLE FILTER UPSTREAM TEMPERATURE
PARAMETER
DEFINITIONThis parameter indicates the particle filter upstream temperature in °C.
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 with the engine running and the engine
coolant temperature > 80°C.
PR382 ≈ 200°C
In the event of a fault, refer to the interpretation of faults DF309 Particle filter downstream temp* sensor and
DF310 Particle filter upstream temp* sensor.
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16_V50_PR382/EDC16_V58_PR382/EDC16_V5C_PR382/EDC16_V18_PR382/EDC16_V1C_PR382/EDC16_V20_PR382
Page 270 of 365

13B-270
MR-372-J84-13B200$648.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of parameters
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
PR383
WEIGHT OF SOOT IN PARTICLE FILTER
PARAMETER
DEFINITIONThis parameter indicates the weight of soot in the particle filter in g.
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, or engine running, and engine coolant temperature
>80 °C.
Vdiag 50, 58, 5c:
PR383 < 45 g.
If the weight is greater than 45 g:
Refer to the interpretation of fault DF315 Particle filter differential pressure sensor.
Vdiag 18, 1c, 20:
PR383 < 56 g.
If the weight is greater than 56 g:
Refer to the interpretation of fault DF315 Particle filter differential pressure sensor.
AFTER REPAIRCarry out a road test followed by a check with the diagnostic tool.
EDC16_V50_PR383/EDC16_V58_PR383/EDC16_V5C_PR383/EDC16_V18_PR383/EDC16_V1C_PR383/EDC16_V20_PR383
Page 277 of 365
13B-277
MR-372-J84-13B200$684.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of parameters
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
* diff: differentialPR414
PARTICLE FILTER DIFF PRESSURE
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 engine stopped and ignition on
- 1 mbar < PR414 < 1 mbar
In the event of a fault, consult the interpretation of DF315 Particle filter diff.* pressure sensor.
Conformity check with engine running, engine coolant temperature > 80 °C.
10 mbar < PR414 < 100 mbar
In the event of a fault, consult the interpretation of DF315 Particle filter diff.* pressure sensor.
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16_V50_PR414/EDC16_V58_PR414/EDC16_V5C_PR414/EDC16_V18_PR414/EDC16_V1C_PR414/EDC16_V20_PR414
Page 281 of 365
13B-281
MR-372-J84-13B200$684.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of parameters
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
PR667
TURBINE UPSTREAM TEMPERATURE
PARAMETER
DEFINITIONThis parameter indicates the turbine upstream temperature in °C.
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, or engine running, and engine coolant
temperature > 80°C.
Indicates the turbine upstream air temperature in °C,which is ≈ 200°C.
In the event of a fault, refer to the interpretation of DF652 Turbine upstream temperature sensor circuit.
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16_V50_PR667/EDC16_V58_PR667/EDC16_V5C_PR667/EDC16_V18_PR667/EDC16_V1C_PR667/EDC16_V20_PR667
Page 282 of 365
13B-282
MR-372-J84-13B200$684.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of parameters
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
PR668
TURBINE UPSTREAM TEMPERATURE SENSOR VOLTAGE
PARAMETER
DEFINITIONThis parameter indicates the turbine upstream temperature 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 with the engine running and the engine
coolant temperature > 80°C
The voltage must be between 4.95 V < PR668 < 5 V.
In the event of a fault, refer to the interpretation of DF652 Turbine upstream temperature sensor circuit.
AFTER REPAIRCarry out a road test followed by a check with the diagnostic tool.
EDC16_V50_PR668/EDC16_V58_PR668/EDC16_V5C_PR668/EDC16_V18_PR668/EDC16_V1C_PR668/EDC16_V20_PR668
Page 291 of 365
13B-291
MR-372-J84-13B200$720.mif
V13
13B
DIESEL INJECTION
Fault finding – Command summary table
Tool command Diagnostic tool title
SC001Write saved data
SC002Enter injector codes
SC003Save computer data
SC017Particle filter regeneration
SC036Reinitialise programming
CF030Thermoplungers
RZ005Programming
RZ007Fault memory
RZ034Computer memory
LC009Air conditioning
LC056Thermoplungers
LC065Water in diesel fuel sensor
LC120Cruise control
LC121Speed limiter
VP010Enter VIN
AC001Preheating unit
AC004Turbocharging solenoid valve
AC011Rail pressure regulator
AC012Damper valve
AC031Thermoplunger no. 3 relay (Vdiag 58 only)
AC038Low-speed fan assembly relay (Vdiag 18, 1C, 20 only)
AC039High-speed fan assembly relay (Vdiag 18, 1C, 20 only)
AC063Thermoplunger no. 1 relay (Vdiag 58 only)
AC064Thermoplunger no. 2 relay (Vdiag 58 only)
AC195Electric coolant pump
MR-372-J84-13B200$720.mif
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
Page 303 of 365

13B-303
MR-372-J84-13B200$756.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of commands
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
AC004
TURBOCHARGING SOLENOID VALVE
NOTESthis command is used to check the turbocharging circuit.
This command checks that the turbocharger and the control circuit are working properly.
Introduction
1- check the sealing of the high-pressure air circuit:
Pipes not joined or pierced, pressure sensor disconnected or poorly fitted (seal present), intercooler pierced. To
check the intercooler: with the vehicle stopped, stabilise the engine speed between 3500 rpm < X < 4000 rpm
and check that there are no leaks.
Check the resistance of the turbocharging pressure relief solenoid valve between connections 3FB and 3MG.
Replace the solenoid valve if its resistance is not: 14.7 Ω < X < 16.1 Ω at 20°C.
Check the injection computer connections.
Check the continuity and absence of interference resistance of connection 3MG between components 120
and 1475.
If the connection or connections are faulty and there is a repair method (see Technical Note 6015A, Repairing
electrical wiring, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Check for + 12 V after relay on connection 3FB of component 1475.
2- turbocharger control circuit check
– with the engine stopped, check that the control rod is (in the rest position the control rod is retracted),
– start the engine and check that the control rod disengages and pulls on the turbocharger geometry (when the
engine is stopped, the control rod should return to the rest position).
– if the control rod does not move correctly, carry out the following checks:
1) Vacuum pressure command check:
– Disconnect the solenoid valve inlet hose and connect it to a pressure gauge.
– Start the engine and run it at a stable idle speed.
– if the vacuum is not between 700 mbar < X < 900 mbar, check the vacuum circuit from the vacuum pump.
– Stop the engine, reconnect the inlet hose and go to step no. 2.
2) Solenoid valve control check:
– Disconnect the solenoid valve outlet hose.
– Start the engine and run it at a stable idle speed.
– Place your hand on the solenoid valve and block the outlet union with your thumb.
– If there is no perceptible vibration of the solenoid valve, check that the computer output is working correctly
(step 5) and check solenoid valve operation:
– Connect the pressure gauge to the solenoid valve outlet union.
– Start the engine and run it at a stable idle speed.
if the vacuum is not between 700 mbar < X < 900 mbar, replace the solenoid valve.
EDC16_V50_AC004/EDC16_V58_AC004/EDC16_V5C_AC004/EDC16_V18_AC004/EDC16_V1C_AC004/EDC16_V20_AC004