2011 RENAULT SCENIC air condition

13B-160
MR-372-J84-13B200$360.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF1070
PRESENT
OR
STOREDCOLD LOOP
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present with the engine running and a heating and air
conditioning request
Priorities when dealing with a number of faults:
Firstly, deal with the following faults:
–DF049 Refrigerant sensor circuit, if it is present or stored.
When the fault is present or stored, the heating and air conditioning system is inhibited.
Check fuse F22 (10A) of the UPC and the condition of the air conditioning compressor connector.
If 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.
Check the air conditioning compressor wiring.
If the wiring is faulty and there is a repair procedure (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Manually check if the compressor is jammed (turn the clutch plate manually to check that there is no point of
resistance). In the event of sticking, replace the air conditioning compressor (see MR 364 (Mégane II) or 370
(Scénic II), Mechanical, Heating and air conditioning system, 62A, Air conditioning, Compressor:
Removal – Refitting).
Top up with refrigerant, check for any leaks and repair if necessary (see MR 364 (Mégane II) or 370 (Scénic II),
Mechanical, Heating and air conditioning system, 62A, Air conditioning, Refrigerant circuit: check,
Refrigerant circuit: Draining – Filling).
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF1070/EDC16_V58_DF1070/EDC16_V5C_DF1070/EDC16_V18_DF1070/EDC16_V1C_DF1070/EDC16_V20_DF1070

13B-162
MR-372-J84-13B200$468.mif
V13
13B
DIESEL INJECTION
Fault finding – Status summary table
Tool status Diagnostic tool title
ET001+ After ignition computer feed
ET003Engine immobiliser
ET004Air conditioning authorisation
ET007Pre-postheating unit control
ET014Monitor cooling fan 1
ET015Monitor cooling fan 2
ET021High speed fan assembly request
ET022Low speed fan assembly request
ET038Engine
ET042Cruise control/speed limiter
ET076Starting
ET077Impact detected
ET079Air conditioning present
ET088Compressor actuation request
ET104Injector code use
ET111Number of passenger compartment heating resistors fixed (Vdiag 50 only)
ET112Passenger compartment heating resistors cut out (Vdiag 50 only)
ET143Low-speed fan assembly relay control (Vdiag 18, 1C, 20 only)
ET144High-speed fan assembly relay control (Vdiag 18, 1C, 20 only)
ET205Heating element no. 1 relay control (Vdiag 58 only)
ET206Heating element no. 2 relay control (Vdiag 58 only)
ET207Heating element no. 3 relay control (Vdiag 58 only)
ET238Synchronisation
ET341Immobiliser code programmed
ET405Clutch pedal switch
ET415Cruise control/speed limiter deactivation
ET651EGR programming cut-off
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
MR-372-J84-13B200$468.mif

13B-165
MR-372-J84-13B200$504.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of statuses
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
ET001
CONTINUED
Sensor electrical conformity
"ABSENT"
NOTESIgnition on
Check the condition and the conformity of the supply fuse F5D (5A) of the Protection and Switching Unit
(Vdiag 18, 1C, 20 only).
Repair if necessary
Check for an earth on connection NT (Laguna II) or N (Mégane II and Scénic II) of component 120.
If the connection is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Check for a + 12 V feed on connection AP29 (Laguna II) or AP15 (Mégane II and Scénic II) of the injection
computer.
If there is no voltage, check the continuity and insulation from earth of connection AP29 (Laguna II) or AP15
(Mégane II and Scénic II) between components 120 and 1337 (Vdiag 18, 1C, 20 only) or 597 (Vdiag 50, 58, 5C
only).
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.
PRESENT
NOTESIgnition on
Check that there is no + 12 V feed with the ignition off on connection AP29 (Laguna II) or AP15 (Mégane II and
Scénic II) of component 120.
If the connection is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.

13B-167
MR-372-J84-13B200$504.mif
V13
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5CDIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET004
AC AUTHORISED
STATUS DEFINITIONYES, this status indicates that the air conditioning is active.
NO, this status indicates that the air conditioning is inactive.
NOTESSpecial notes
Only perform these tests if the statuses do not correspond with the system
programming functions.
Engine running, engine coolant temperature > 80 °C
YES
The air conditioning authorisation only changes to YES if:
– the air conditioning request has been made by the driver (air conditioning switch in
AC or AUTO position with minimum ventilation),
– the engine is not under full load,
– the air conditioning system is not faulty.
Conformity check with engine stopped and ignition on
NOStatus ET004 remains NO under the following conditions:
– Vehicle stopped with the ignition on,
– faults present in the air conditioning circuit,
– no air conditioning request made by the driver,
– engine under full load.
If status ET004 remains NO then the air conditioning should be authorised, check:
– that the air conditioning compressor is activated correctly,
– the air conditioning system feed fuses,
– the presence of refrigerant in the air conditioning circuit,
– that the refrigerant fluid pressure value is consistent at idle speed.
If the fault is still present, check the air conditioning computer faults (see62C, Air
conditioning).
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16_V50_ET004/EDC16_V58_ET004/EDC16-V5C_ET004/EDC16_V18_ET004/EDC16_V1C_ET004/EDC16-V20_ET004

13B-170
MR-372-J84-13B200$504.mif
V13
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5CDIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET014
CHECK COOLING FAN 1
STATUS DEFINITIONRUNNING, this status indicates that the fan assembly is engaged.
STOPPED, this status indicates that the fan assembly is not engaged.
NOTESSpecial notes:
Only perform these tests if the statuses do not correspond with the system
programming functions.
NOTE:
Statuses ET014 and ET022 Low-speed fan assembly request change status simultaneously.
Conformity check with the engine stopped and the ignition on, or engine running, and engine coolant
temperature > 80°C
RUNNING
The low-speed engine fan is supplied in three scenarios:
– the engine coolant temperature is greater than 89°C,
– the air conditioning is operating,
– the injection computer has system faults that could lead to the engine overheating.
When the low-speed fan assembly is supplied:
–status ET014 becomes RUNNING and status ET022 Low-speed fan assembly
request becomes ACTIVE.
If the low-speed fan assembly does not work, refer to the fault finding note for the
Protection and Switching Unit (Vdiag 18, 1C, 20 only).
Conformity check with engine stopped and ignition on.
STOPPEDThe low-speed fan assembly stops when:
– the engine coolant temperature is less than 89°C
– the air conditioning is not switched on by the driver.
IMPORTANT!WARNING
If the Protection and Switching Unit (Vdiag 18, 1C, 20 only) no longer detects the injection
computer signals, the low-speed fan assembly is supplied until the battery is completely
discharged.
If the low-speed fan assembly is defective, the high-speed fan assembly will be activated.
AFTER REPAIRCarry out a road test followed by a check with the diagnostic tool.
EDC16_V50_ET014/EDC16_V58_ET014/EDC16_V5C_ET014/EDC16_V18_ET014/EDC16_V1C_ET014/EDC16_V20_ET014

13B-173
MR-372-J84-13B200$504.mif
V13
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5CDIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET022
LOW SPEED GMV CONTROL
STATUS DEFINITIONRUNNING, this status indicates that the high-speed fan assembly has been requested.
STOPPED, this status indicates that the high-speed fan assembly has not been
requested.
NOTESSpecial notes:
Only perform these tests if the statuses do not correspond with the system
programming functions.
NOTE:
Statuses ET022 and ET014 Fan assembly 1 check change status simultaneously.
Conformity check with the engine stopped and the ignition on, or engine running, and engine coolant
temperature > 80°C
ACTIVE
The injection computer requests the activation of the low speed GMV when:
– the engine coolant temperature is greater than 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 becomes ACTIVE,
–status ET014 Fan assembly 1 check becomes RUNNING.
Conformity check with engine stopped and ignition on
INACTIVEThe low-speed 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 requested by the driver
IMPORTANT!WARNING
If the Protection and Switching Unit (Vdiag 18, 1C, 20 only) no longer detects the injection
computer signals, the low-speed fan assembly is supplied until the battery is completely
discharged.
If the low-speed fan assembly is defective, the high-speed fan assembly will be activated.
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16_V50_ET022/EDC16_V58_ET022/EDC16_V5C_ET022/EDC16_V18_ET022/EDC16_V1C_ET022/EDC16_V20_ET022

13B-183
MR-372-J84-13B200$504.mif
V13
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5CDIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET077
IMPACT DETECTED
STATUS DEFINITIONNO: This status indicates that the airbag computer has not detected an impact.
YES: This status indicates that the airbag computer has detected an impact.
NOTESSpecial notes:
Only perform these tests if the statuses do not correspond with the system
programming functions.
This signal is transmitted by the airbag computer via the multiplex network.
Conformity check with the engine stopped and the ignition on, or engine running, and engine coolant
temperature > 80°C
NO
Under normal operating conditions, status ET077 is NO when the computer has
received no impact signal.
YESIf the vehicle has had an accident, the injection computer receives the impact signal via
the multiplex network and may switch off the ignition. Status ET077 is YES.
Switch off the ignition for 1 minute, then switch it on again, so the engine can be
started.
Carry out a multiplex network test and deal with any faults.
Clear the injection computer faults, even if no fault is present.
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16_V50_ET077/EDC16_V58_ET077/EDC16_V5C_ET077/EDC16_V18_ET077/EDC16_V1C_ET077/EDC16_V20_ET077

13B-184
MR-372-J84-13B200$504.mif
V13
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5CDIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET088
REQUEST TO START COMPRESSOR
STATUS DEFINITIONACTIVE: This status indicates that the compressor is engaged.
INACTIVE: This status indicates that the compressor is not engaged.
NOTESSpecial notes:
Only perform these tests if the statuses do not correspond with the system
programming functions.
Engine running, engine coolant temperature > 80 °C
ACTIVE
Status ET088 becomes ACTIVE if there has been a request for air conditioning (“AC” or
“AUTO” button pressed, with maximum cold) and if status ET004 Air conditioning
authorisation is YES.
The selection is made on the air conditioning control panel, the request for air
conditioning is transmitted to the UCH which in turn transmits the request to the
injection computer which either authorises or does not authorise compressor activation.
If the injection computer authorises compressor activation, it sends the compressor
activation request to the Protection and Switching Unit (Vdiag 18, 1C, 20 only) and
status ET088 becomes ACTIVE (climate control).
If the vehicle is equipped with manual air conditioning, the air conditioning request is
transmitted from the air conditioning control panel to the UCH which then accepts or
does not accept the air conditioning compressor coming on depending on the operating
status of the passenger compartment fan. When the request has been accepted, the
request to switch on the compressor is transmitted to the injection computer which
either authorises or does not authorise the compressor to start.
If the injection computer authorises compressor activation, it sends the compressor
activation request to the Protection and Switching Unit (Vdiag 18, 1C, 20 only) and
status ET088 becomes ACTIVE.
If there has been no compressor activation request and status ET088 remains ACTIVE
(see62A, Air conditioning).
Note:
Compressor operation is only authorised when the engine is running.
Compressor switch-on is finally requested by the Protection and Switching
Unit (Vdiag 18, 1C, 20 only).
AFTER REPAIRCarry out a road test followed by a check with the diagnostic tool.
EDC16_V50_ET088/EDC16_V58_ET088/EDC16_V5C_ET088/EDC16_V18_ET088/EDC16_V1C_ET088/EDC16_V20_ET088