Page 124 of 273

DIESEL INJECTION
Fault finding – Interpretation of faults13B
13B -124V3 MR-372-J84-13B250$450.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
DF620
PRESENT
OR
STOREDEGR VALVE FOULED
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present after a road test.
Priorities when dealing with a number of faults:
–DF118 EGR solenoid valve servo-control,
–DF209 EGR valve position sensor circuit,
–DF272 EGR valve control circuit,
if they are present or stored.
Special note:
If the fault is present:
–the EGR function is inhibited,
–turbocharging is inhibited,
–the level 1 warning light is lit.
Use bornier Ele. 1681 or Ele. 1590 for any operation on the injection computer
connectors.
IMPORTANT
If the EGR valve needs to be replaced to resolve the fault, use command SC036
Reinitialise programming and select EGR valve to reinitialise the EGR valve offsets
(see Replacement of components).
Check the EGR valve connections.
Check the injection computer connections.
Repair if necessary.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V51_DF620
Page 126 of 273

DIESEL INJECTION
Fault finding – Interpretation of faults13B
13B -126V3 MR-372-J84-13B250$450.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
DF621
PRESENT
OR
STOREDEGR VALVE JAMMED OPEN (OBD FAULT)
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present after a road test.
Priorities when dealing with a number of faults:
–DF118 EGR solenoid valve servo-control,
–DF209 EGR valve position sensor circuit,
–DF272 EGR valve control circuit,
if they are present or stored.
Special note:
If the fault is present:
–there is heavy smoke coming from the exhaust,
–the OBD warning light will come on after three consecutive driving cycles (starting
+ 5 seconds + switching off the ignition and waiting 1 minute).
Use bornier Ele. 1681 or Ele. 1590 for any operation on the injection computer
connectors.
IMPORTANT
If the EGR valve needs to be replaced to resolve the fault, use command SC036
Reinitialise programming and select EGR valve to reinitialise the EGR valve offsets
(see Replacement of components).
Check the EGR valve connections.
Check the injection computer connections.
Repair if necessary.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V51_DF621
Page 128 of 273

DIESEL INJECTION
Fault finding – Interpretation of faults13B
13B -128V3 MR-372-J84-13B250$450.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
DF652
PRESENT
OR
STOREDTURBINE UPSTREAM TEMPERATURE SENSOR CIRCUIT
CC.0 : Short circuit to earth
CO.1 : Short circuit or open circuit to + 12 V
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault becomes present:
–ignition is on (CC.0),
–following a road test, engine warm (CO.1).
Special notes:
If the fault is present:
–the EGR function is inhibited,
–particle filter regeneration is inhibited,
–the vehicle performance is reduced,
–the level 1 warning light is illuminated.
Priorities when dealing with a number of faults:
DF011 Sensor voltage supply no. 1
IMPORTANT
The turbine upstream temperature sensor only measures temperatures above
200˚C.
Check the condition of the turbine upstream temperature sensor connector (see Wiring Diagram Technical Note,
Mégane II, Scénic II, component code 1589).
Check the condition of the engine management computer connector (see Wiring Diagram Technical Note,
Mégane II, Scénic II, component code 120).
If one of the connectors is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring
repair, Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V51_DF652
Page 130 of 273

DIESEL INJECTION
Fault finding – Interpretation of faults13B
13B -130V3 MR-372-J84-13B250$450.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
DF778
PRESENT
OR
STOREDTURBINE UPSTREAM TEMPERATURE CONTROL
1.DEF: Temperature measured too high
2.DEF: Parameter at max limit
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault becomes present:
–the engine is started with a speed greater than 1750 rpm and a fuel flow greater than
30 mg/st,
–a road test.
Special notes:
If the fault is present:
–particle filter regeneration is inhibited,
–the vehicle performance is reduced,
–the level 1 warning light is illuminated.
IMPORTANT
This fault can result in a rapid and significant fouling of the particle filter.
Apply TEST 3 Turbocharged air inlet circuit check.
Check the turbine upstream temperature sensor connections.
check the engine management computer connections.
If there is a repair method (see Technical Note 6015A, Repairing electrical wiring, Wiring: Precautions for
repair), repair the wiring, otherwise replace it.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V51_DF778
Page 176 of 273

DIESEL INJECTION
Fault finding – Interpretation of statuses13B
13B - 176V3 MR-372-J84-13B250$630.mif
EDC16
PROGRAM NO.: C1
Vdiag No.: 51
ET014
CHECK COOLING FAN 1
NOTESSpecial notes:
Only perform these tests if the statuses do not correspond with the system
programming functions.
NOTE:
Status ET014 test and status ET022 GMV1 low speed request change their status at the same time.
RUNNING
The low-speed engine fan unit is supplied in three scenarios:
–the engine coolant temperature is above 89 ˚C;
–the air conditioning is operating
–the injection computer has system faults that could lead to the engine overheating.
When the low-speed engine fan is supplied:
–status ET014 GMV 1 test becomes RUNNING status ET022 Low speed GMV
request becomes ACTIVE.
If the low speed GMV does not work (see 87G, engine compartment connection unit).
The low-speed engine fan assembly stops when:
–the engine coolant temperature is below 89 ˚C;
–the air conditioning is not switched on by the driver.
STOPPED
IMPORTANTWARNING
If the UPC does not detect the injection computer frames, the low speed engine
fan is supplied until the battery is completely discharged.
In the event that the low-speed engine fan assembly is faulty, the high-speed
engine fan assembly will then be activated.
AFTER REPAIRCarry out a road test followed by a complete test with the diagnostic tool.
EDC16_V51_ET014
Page 177 of 273

DIESEL INJECTION
Fault finding – Interpretation of statuses13B
13B - 177V3 MR-372-J84-13B250$630.mif
STOPPED
EDC16
PROGRAM NO.: C1
Vdiag No.: 51
ET015
CHECK COOLING FAN 2
NOTESSpecial notes:
Only perform these tests if the statuses do not correspond with the system
programming functions.
NOTE:
Status ET015 GMV 2 test and status ET021 High speed GMV request change their status at the same time.
RUNNING
The engine fan assembly can be supplied when:
–the engine coolant temperature is above 99 ˚C.
–the injection computer has system faults that could lead to the engine overheating.
When the high speed fan is supplied:
–status ET015 GMV 2 test becomes RUNNING and status ET021 High speed GMV
request becomes ACTIVE.
The high-speed engine fan assembly stops when:
–the engine coolant temperature is below 99 ˚C;
IMPORTANTWARNING
If the UPC does not detect the injection computer frames, the low speed engine
fan is supplied until the battery is completely discharged.
In the event that the low-speed engine fan assembly is faulty, the high-speed
engine fan assembly will then be activated.
AFTER REPAIRCarry out a road test followed by a complete test with the diagnostic tool.
EDC16_V51_ET015
Page 178 of 273

DIESEL INJECTION
Fault finding – Interpretation of statuses13B
13B - 178V3 MR-372-J84-13B250$630.mif
INACTIVE
EDC16
PROGRAM NO.: C1
Vdiag No.: 51
ET021
HIGH-SPEED FAN REQUEST
NOTESSpecial notes:
Only perform these tests if the statuses do not correspond with the system
programming functions.
NOTE:
Status ET021 High speed GMV request and status ET015 GMV 2 test change their status at the same time.
ACTIVE
The injection computer requests the activation of the high speed GMV when:
–the engine coolant temperature is above 99 ˚C.
–the injection computer has system faults that could lead to the engine overheating.
When the high speed fan is supplied:
–status ET021 High speed GMV request becomes RUNNING and status ET015
GMV 2 test becomes ACTIVE.
The high-speed engine fan assembly stops when:
–the engine coolant temperature is below 99 ˚C;
–no fault which could cause engine overheating is present in the injection
system.
IMPORTANTWARNING
If the UPC does not detect the injection computer frames, the low speed engine
fan is supplied until the battery is completely discharged.
In the event that the low-speed engine fan assembly is faulty, the high-speed
engine fan assembly will then be activated.
AFTER REPAIRCarry out a road test followed by a complete test with the diagnostic tool.
EDC16_V51_ET021
Page 179 of 273

DIESEL INJECTION
Fault finding – Interpretation of statuses13B
13B - 179V3 MR-372-J84-13B250$630.mif
INACTIVE
EDC16
PROGRAM NO.: C1
Vdiag No.: 51
ET022
LOW SPEED GMV CONTROL
NOTESSpecial notes:
Only perform these tests if the statuses do not correspond with the system
programming functions.
NOTE:
Status ET022 Low speed GMV request and status ET014 GMV 1 test change their status at the same time.
ACTIVE
The injection computer requests the activation of the low speed GMV when:
–the engine coolant temperature is above 89 ˚C;
–the injection computer has system faults that could lead to the engine overheating,
–the air conditioning is switched on by the driver.
When the high speed fan is supplied:
–status ET022 Low speed GMV request becomes ACTIVE and status ET014 GMV
1 test becomes RUNNING.
The low-speed engine fan assembly stops when:
–the engine coolant temperature is below 89 ˚C;
–no fault which could cause engine overheating is present in the injection
system.
–the air conditioning is not switched on by the driver.
IMPORTANTWARNING
If the UPC does not detect the injection computer frames, the low speed engine
fan is supplied until the battery is completely discharged.
In the event that the low-speed engine fan assembly is faulty, the high-speed
engine fan assembly will then be activated.
AFTER REPAIRCarry out a road test followed by a complete test with the diagnostic tool.
EDC16_V51_ET022