diagnostic menu RENAULT SCENIC 2010 J95 / 3.G Air Conditioning Workshop Manual

AIR CONDITIONING
Fault finding - Fault Finding Chart62A
62A-52V4 MR-372-J84-62A000$080.mif
Manual air conditioning
and
Climate control
ALP 8
CONTINUED 3
Check the condition of the air conditioning compressor
belt and its tension.
Is the tension correct?
YES
With the engine stopped, use the diagnostic tool to run
command AC008 COMPRESSOR CONTROL (Protection
and Switching Unit command mode menu).
Does the compressor clutch jam?
YES
With the engine warm and passenger
compartment ventilation operating, vary
the position of the mixing flap from the
maximum hot position to the maximum
cold position and check subjectively that
there is a difference in temperature.
Can you feel the difference in
temperature?
YES
NOReplace the belt
(refer to repair methods).
NOUse the fault finding procedure for
command AC008 COMPRESSOR
CONTROL found in the Protection
and Switching Unit Technical Note.
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 systems:
Check the condition and routing of the mixing flap
control cable. Eliminate any stresses 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 NO
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-54V4 MR-372-J84-62A000$080.mif
Manual air conditioning
and
Climate control
ALP 9 Too much cold air
NOTESOnly refer to this customer complaint after a full check with the diagnostic tool (fault
reading and configuration checks).
With the engine running at idle speed and air conditioning switched off ("AC" button not
pressed and no "AUTO" mode), check that the air conditioning compressor clutch is not
engaged.
Is the air conditioning compressor clutch engaged?
YES
With the engine stopped, use the diagnostic tool to run command AC008
COMPRESSOR CONTROL (Protection and Switching Unit command mode menu) to
check the correct operation of the compressor clutch electrical control.
During the command, track A of the compressor clutch must be supplied with + 12 volts.
If the + 12 volts feed is still present after the command has terminated: refer to the
interpretation of this command (check the continuity and insulation against + 12 volts
of the electrical connection between the UPC and the compressor clutch).
If there are no faults on the compressor command line but the clutch remains engaged:
check that the air conditioning compressor clutch is not seized (mechanical fault).
Replace the air conditioning compressor if necessary.
Is the fault still present?
YES
NO
NO
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-56V4 MR-372-J84-62A000$080.mif
Manual air conditioning
and
Climate control
ALP 10 Inefficient rear screen de-icing or demisting
NOTESOnly refer to this customer complaint after a full check with the diagnostic tool (fault
readings, especially those of the Protection and Switching Unit, and configuration
checks).
Special notes:
–Check that the inside of the glass is not greasy as this lowers the de-icing efficiency.
N.B.: for electric power drain reasons, de-icing can only be activated when the
engine is running.
Rear screen de-icing can be activated in two ways:
–Pressing the de-icing button (at the bottom of the control panel) switches on the
heated rear screen in manual mode (with timer) and heated door mirrors.
–Pressing the de-icing button at the top of the control panel activates the "See clear"
function: heated rear screen in automatic mode (no timer) heated door mirrors, air
conditioning and high speed windscreen ventilation all switched on.
Check that there are no water leaks into the passenger compartment
which would significantly increase the humidity levels and reduce the
effectiveness of demisting. Repair if necessary (see ALP 12).
Is the fault still present?
YES
Check for earth on the right-hand side terminal of the heated rear screen.
Repair if necessary.
Use the diagnostic tool to run command AC011 Heated
rear screen (Protection and Switching Unit command
mode menu).
Is the 12 V feed present on the left-hand connector
of the heated rear screen?
NO
NO
YESEnd of fault finding
procedure.
If the 12 V feed and earth both arrive
correctly at the heated rear screen
terminals but the screen still does not
operate correctly: unclip the plastic
rear screen pillars and check that the
de-icing lines are not broken. The
resistance of the lines should be
neither zero nor infinity (average
0.5 Ω). Repair if necessary.
AFTER REPAIRPerform a complete check using the diagnostic tool.
CLIM X84 1.1
Edition 2