Page 243 of 329
13B-243
MR-372-J84-13B050$780.mif
V17
DIESEL INJECTION
Fault finding – Interpretation of parameters
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2
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 the engine running and the engine
coolant temperature > 80°C
0.3 V ≤ PR668 ≤ 5 V
In the event of a fault, refer to the interpretation of fault DF652 Turbine upstream temperature sensor circuit.
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
SID304_V4D_PR668/SID304_V45_PR668/SID304_V49_PR668/SID301_V4C_PR668
Page 244 of 329

13B-244
MR-372-J84-13B050$780.mif
V17
DIESEL INJECTION
Fault finding – Interpretation of parameters
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2
13B
*sens: sensor
*Circ: circuit
*diff: differential
*Press: PressurePR669
PARTICLE FILTER DIFF* PRESS* SENS* VOLTAGE
PARAMETER
DEFINITIONThis parameter indicates the voltage of the particle filter differential pressure sensor 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 the engine running and the engine
coolant temperature > 80°C
PR669 ≈5V
In the event of a fault, consult the interpretation of DF1003 Particle filter differential pressure sensor circuit.
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
SID304_V4D_PR669/SID304_V45_PR669/SID304_V49_PR669/SID301_V4C_PR669
Page 245 of 329

13B-245
MR-372-J84-13B050$780.mif
V17
DIESEL INJECTION
Fault finding – Interpretation of parameters
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2
13B
*temp: temperature
*sens: sensorPR670
VOLTAGE OF PARTICLE FILTER UPSTREAM OF TEMP* SENS*
PARAMETER
DEFINITIONThis parameter indicates the particle filter 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 the engine running and the engine
coolant temperature > 80°C
0.7 V ≤PR670 ≤5V
In the event of a fault, refer to the interpretation of fault DF1000 Particle filter upstream temperature sensor
circuit.
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
SID304_V4D_PR670/SID304_V45_PR670/SID304_V49_PR670/SID301_V4C_PR670
Page 246 of 329

13B-246
MR-372-J84-13B050$780.mif
V17
DIESEL INJECTION
Fault finding – Interpretation of parameters
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2
13B
*temp: temperature
*sens: sensorPR671
PARTICLE FILTER DOWNSTREAM TEMPERATURE SENS*
VOLTAGE
PARAMETER
DEFINITIONThis parameter indicates the particle filter downstream 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 the engine running and the engine
coolant temperature > 80°C
0.7 V ≤PR671 ≤5V
In the event of a fault, refer to the interpretation of fault DF999 Particle filter downstream temperature sensor
circuit.
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
SID304_V4D_PR671/SID304_V45_PR671/SID304_V49_PR671/SID301_V4C_PR671
Page 247 of 329

13B-247
MR-372-J84-13B050$780.mif
V17
DIESEL INJECTION
Fault finding – Interpretation of parameters
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2
13B
PR672
DAMPER VALVE POSITION SETPOINT
PARAMETER
DEFINITIONThis parameter indicates the damper valve position setpoint as a %.
NOTESSpecial notes:
Only perform these tests if the parameters do not correspond with the system
operation programming.
Vdiag 44 and 48 only.
Conformity check: engine stopped and ignition on.
PR672 ≤94%
In the event of a fault, consult the interpretation of fault DF641 Damper valve circuit.
Conformity check with engine running, engine coolant temperature > 80°C
PR672 = 94%
In the event of a fault, consult the interpretation of fault DF641 Damper valve circuit.
This parameter is only valid when the engine is running.
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
SID301_V44_PR672/SID301_V48_PR672
Page 248 of 329

13B-248
MR-372-J84-13B050$780.mif
V17
DIESEL INJECTION
Fault finding – Interpretation of parameters
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2
13B
PR739
FUEL FLOW SOLENOID VALVE CURRENT
PARAMETER
DEFINITIONThis parameter indicates the current absorbed by the fuel flow solenoid valve inmA.
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.
This parameter indicates the current absorbed by the fuel flow solenoid valve ≈200 mA.
In the event of a fault, refer to the interpretation of fault DF770 Flow regulator circuit.
Conformity check with engine running, engine coolant temperature > 80°C
Indicates the current absorbed by the fuel flow solenoid valve ≈300 mA.
In the event of a fault, refer to the interpretation of fault DF770 Flow regulator circuit.
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
SID304_V49_PR739/SID304_V4D_PR739/SID301_V4C_PR739
Page 250 of 329

13B-250
MR-372-J84-13B050$780.mif
V17
DIESEL INJECTION
Fault finding – Interpretation of parameters
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2
13B
PR810
CATALYTIC CONVERTER 1 DOWNSTREAM TEMPERATURE
PARAMETER
DEFINITIONThis parameter indicates the catalytic converter 1 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 engine running, and engine coolant
temperature > 80°C
This parameter indicates the temperature downstream of catalytic converter 1 using the temperature sensor
located before the oxidation catalytic converter.
This temperature changes depending on the status of the vehicle (hot or cold).
The temperature is given in °C.
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
SID304_V4D_PR810/SID304_V45_PR810/SID304_V49_PR810/SID301_V4C_PR810
Page 251 of 329

13B-251
MR-372-J84-13B050$780.mif
V17
DIESEL INJECTION
Fault finding – Interpretation of parameters
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2
13B
PR812
CATALYTIC CONVERTER 1 TEMPERATURE SENSOR VOLTAGE
PARAMETER
DEFINITIONThis parameter indicates the catalytic converter 1 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 the engine running and the engine
coolant temperature > 80°C
0.7 V ≤PR812 ≤5V
In the event of a fault, consult the interpretation of fault DF1007 Catalytic converter 1 downstream temperature
sensor circuit or DF1009 Catalytic converter 1 downstream temperature regulation.
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
SID304_V4D_PR812/SID304_V45_PR812/SID304_V49_PR812/SID301_V4C_PR812