2010 RENAULT SCENIC heating

AIR CONDITIONING
Fault finding - Fault Finding Chart62A
62A-45V4 MR-372-J84-62A000$080.mif
Manual air conditioning
and
Climate controlAIR CONDITIONING
Fault finding - Fault Finding Chart
ALP 6 No heating or inadequate heating
NOTESOnly refer to this customer complaint after a full check with the diagnostic tool (fault
reading and configuration checks).
Is the air flow correct?
YES
Is the air distribution correct?
YES
With the engine warm, select the MAX heat position.
Is the blown air hot?
NO
Using the diagnostic tool statuses and parameters
screen (cold loop sub-function), check that the
temperature signals are correct (no sensor drift
resulting in incorrect measurement).
For manual air conditioning systems:
–External air temperature and engine coolant
temperature.
For climate control systems:
–External air temperature, engine coolant
temperature and internal air temperature.
Depending on the vehicle equipment, also check that
the internal air temperature sensor mini-turbine is
operating correctly (this can distort the measurement if
it is faulty).
Are the temperature signals consistent?
YES
NO
NO
YES
NOSee ALP 3, air flow fault.
See ALP 2, air distribution fault.
If necessary, explain how the
system works to the customer
again.
Carry out a conformity check on
the sensors (refer to the relevant
section).
Replace any faulty components.
AFTER REPAIRPerform a complete check using the diagnostic tool.
CLIM X84 1.1
Edition 2

AIR CONDITIONING
Fault finding - Fault Finding Chart62A
62A-46V4 MR-372-J84-62A000$080.mif
Manual air conditioning
and
Climate control
ALP 6
CONTINUED
With the engine warm and
passenger compartment ventilation
operating, vary the position of the
mixing flap from the very cold
position to the very hot position and
check subjectively that there is a
difference in temperature.
Can you feel the difference in
temperature?
YES
NOFor climate control systems:
Carry out a conformity check on the mixing motor
(PR012 Mixing motor). If the conformity check does not
reveal any faults, look for a mechanical fault with the
mixing flap (condition of the motor's toothed sector, flap
jammed inside the unit, etc.).
For manual air conditioning and heater versions:
Check the condition and routing of the mixing flap
control cable. Eliminate any constraints on it: kinks,
cable restricted by plastic clips, etc. Replace it if
necessary. Unclip the cable from the side of the unit and
check the stiffness of movement of each component:
control button and flap control on the air distribution unit.
Check that there is no mechanical fault with the mixing
flap (flap jammed inside the unit, etc.).
Carry out any necessary repairs.
Is the fault still present?
YES
Is the lower heater matrix pipe
(coolant inlet) hot?
NOTE: Pipe located on the left-hand
side of the heater-air conditioning
unit, near the engine bulkhead.
YES
Check that the heater matrix is not blocked: The top heater matrix pipe should be hot.
NOTE: Pipe located on the left-hand side of the heater-air conditioning unit, near the engine
bulkhead. Clean the heater matrix or replace it if necessary.
Is the fault still present?
YES NO
If the vehicle is fitted with passenger compartment heating
resistors (RCH), check that these are operating correctly by
referring to the fault finding procedure in the UCH Technical Note.
NOCarry out a check on the coolant circuit and
ensure that the thermostatic valve opens at the
correct temperature.
Replace the valve if necessary.
NO
End of fault finding procedure.
AFTER REPAIRPerform a complete check using the diagnostic tool.
CLIM X84 1.1
Edition 2

62A-48
AIR CONDITIONING
Fault finding - Fault Finding Chart62A
V4 MR-372-J84-62A000$080.mif
Manual air conditioning
and
Climate control
ALP 7
CONTINUED
For climate control systems:
Using the diagnostic tool statuses and parameters screen (passenger compartment ventilation sub-function),
check that the recirculation flap is in the external air position: status ET062 Recirculation flap position should
display OPEN. If it is closed when the user does not want recirculation, use the fault finding procedure for fault:
DF021 Recirculation motor circuit.
For manual air conditioning systems:
check that the recirculation flap is in the external air position. If this is not operating correctly (impossible to change
the flap to the exterior air position), check the condition and routing of the recirculation flap control cable. Eliminate
any constraints on it: kinks, cable restricted by plastic clips, etc.
Replace it if necessary.
Check that there is no mechanical fault with the recirculation flap (flap jammed).
Carry out any necessary repairs.
Is the fault still present?
YES NO
Is the lower heater matrix pipe (coolant
inlet) hot?
NOTE: Pipe located on the left-hand
side of the heater-air conditioning unit,
near the engine bulkhead.NOCarry out a check on the
coolant circuit and ensure
that thermostatic valve
opens at the correct
temperature.
Replace the valve if
necessary.
YES
If the vehicle is fitted with passenger compartment heating resistors,
check that these are operating correctly (not switching on
unnecessarily) by referring to the fault finding procedure contained in
the UCH technical note.
End of fault finding procedure.
AFTER REPAIRPerform a complete check using the diagnostic tool.
CLIM X84 1.1
Edition 2

AIR CONDITIONING
Fault finding - Fault Finding Chart62A
62A-50V4 MR-372-J84-62A000$080.mif
Manual air conditioning
and
Climate control
ALP 8
CONTINUED 1
With the engine running at idle speed, use the
diagnostic tool to check that the UCH does in fact
send the start air conditioning request to the
injection computer. Status ET030 AIR
CONDITIONING REQUEST 2 should display
ACTIVE.
Is the correct status displayed? NO
YES YES
View the following states on the diagnostic tool
(cold loop subsystem screen):
–ET004 AIR CONDITIONING
AUTHORISATION: this status should be
displayed as YES,
–ET088 COMPRESSOR ENGAGEMENT
REQUEST: this status should be displayed as
ACTIVE.
Are the correct statuses displayed? YES
NO
Check that the injection computer is correctly configured. Status ET079 AIR CONDITIONING PRESENT should
display YES (cold loop sub-function screen).
NOTE: Status ET079 is present in all injection systems.
S3000 injection (K4J, K4M, F4R and F4RT engines) has 2 additional configuration readings:
–LC009 "AIR CONDITIONING" should display "CONNECTED",
–LC016 "AIR CONDITIONING PRESSURE SIGNAL MANAGEMENT" should display "WITH".
Is the injection computer correctly configured?
YES NO
Reconfigure the injection computer (automatic
configuration: see the "Introduction" section in the
Injection note).
Check that the UCH is correctly configured
by viewing the configuration reading
LC013 TYPE OF AIR CONDITIONING.
Reconfigure the UCH if necessary.
Check that the UCH is receiving the engine
operating status and passenger
compartment fan signals correctly (for
manual air conditioning).
On the heating sub-function screen, status
ET091 ENGINE RUNNING should display
YES and status ET015 PASSENGER
COMPARTMENT FAN should display
ACTIVE.
Are the correct statuses displayed?
NO
Carry out a fault finding procedure on the
multiplex network, the injection
(interpretation of status ET091), and the
UCH (interpretation of status ET015).
AFTER REPAIRPerform a complete check using the diagnostic tool.
CLIM X84 1.1
Edition 2

62A-60
AIR CONDITIONING
Fault finding - Fault Finding Chart62A
V4 MR-372-J84-62A000$080.mif
Manual air conditioning
and
Climate control
ALP 15 Passenger compartment ventilation noises
NOTESOnly deal with this customer complaint after a full check with the diagnostic tool
(fault reading and configuration checks).
The aim of the following operations is to check and, if necessary, eliminate any foreign bodies (leaves,
insects, other, etc.) in:
–the passenger compartment air inlet,
–the cabin filter housing,
–the housing and on the fan assembly.
Check the passenger compartment air inlet and the cabin filter housing:
Remove:
–the scuttle panel grille (see MR 371 Bodywork, 55A, Exterior equipment, Scuttle panel grille: Removal -
Refitting),
–the air filter access panel,
–the scuttle panel partition,
–the cabin filter.
Check that there are no foreign bodies (leaves, insects, other, etc.) and, if necessary, clean the passenger
compartment air inlet and the cabin filter housing.
Refit:
–the cabin filter,
–the scuttle panel partition,
–the air filter access panel,
the scuttle panel grille (see MR 371 Bodywork, 55A, Exterior equipment, Scuttle panel grille: Removal -
Refitting).
Check the housing and the fan assembly:
Remove the fan assembly (see MR 370 Mechanical, 61A, Heating, Fan assembly: Removal - Refitting).
Check that there are no foreign bodies (leaves, insects, other, etc.) and, if necessary, clean the fan assembly
housing.
Check that there are no foreign bodies (leaves, insects, other, etc.) and, if necessary, clean the fan assembly.
Refit the fan assembly (see MR 370 Mechanical, 61A, Heating, Fan assembly: Removal - Refitting).
AFTER REPAIRCarry out a complete check using the diagnostic tool.
CLIM X84 1.1
Edition 3