2009 RENAULT SCENIC Air Conditioning Climate Control Workshop Manual

62B - 25
CLIMATE CONTROL
Fault finding – Interpretation of statuses62B
V3 MR-372-J84-62B000$070.mif
Vdiag No.: 44
ET086
HEATED REAR SCREEN: MANUAL MODE
NOTESNone.
This status specifies whether the heated rear screen is being operated in manual mode. This mode
corresponds to a timed operating period for the heated rear screen, controlled by the UCH.
This timed period depends on the exterior temperature (approximately 15 minutes).
Operation in manual mode is obtained by pressing the de-icing button at the bottom of the air conditioning
control panel. This function is used to switch on the heated rear screen and the heated door mirrors.
If operation of the heated rear screen is requested in manual mode, the status should display: ACTIVE.
If operation of the heated rear screen is not requested, the status should display: INACTIVE.
If the status does not operate as shown, refer to ALP 10 in Section 62A Air conditioning.
AFTER REPAIRRepeat the conformity check from the start.
ACREG X84 1.1
Edition 2

62B - 26
CLIMATE CONTROL
Fault finding – Interpretation of statuses62B
V3 MR-372-J84-62B000$070.mif
Vdiag No.: 44
ET141
PASSENGER COMPARTMENT BLOWER
NOTESSpecial note:
This status is used by the UCH to authorise engagement of the passenger
compartment heating resistors (RCH): operating safety.
This status shows the operation of the passenger compartment blower.
When the passenger compartment blower is operating (from speed 1 to speed 8), the status displays:
RUNNING.
When the passenger compartment blower is not operating (speed 0), the status displays: STOPPED.
If the status does not operate as displayed, check that the passenger compartment blower is operating
correctly. If the passenger compartment blower does not work, apply the fault finding procedure in ALP 5 no
passenger compartment ventilation.
If the passenger compartment blower works correctly but the status displays the message STOPPED, check
that the passenger compartment blower visual return (propeller symbol) on the control panel works correctly
(increase in propeller bargraphs according to the eight speeds).
If the passenger compartment blower visual return (propeller symbol) does not work: Contact your Techline.
If the fault is still present, carry out fault finding on the multiplex network.
AFTER REPAIRRepeat the conformity check from the start.
ACREG X84 1.1
Edition 2

62B - 27
CLIMATE CONTROL
Fault finding – Interpretation of statuses62B
V3 MR-372-J84-62B000$070.mif
Vdiag No.: 44
ET143
AIR CONDITIONING REQUEST 1
NOTESNote:
For more information, refer to the compressor switch-on request flowchart in Section
62A Air conditioning.
This status specifies whether the request to switch on air conditioning has been sent by the climate control
computer to the UCH or not.
When operation of the air conditioning is requested, the status should display ACTIVE.
When operation of the air conditioning is not requested, the status should display INACTIVE.
If the status does not operate as shown, contact your Techline.
AFTER REPAIRRepeat the conformity check from the start.
ACREG X84 1.1
Edition 2

62B - 28
CLIMATE CONTROL
Fault finding – Interpretation of parameters62B
V3 MR-372-J84-62B000$080.mif
Vdiag No.: 44
CLIMATE CONTROL
Fault finding – Interpretation of parameters
PR001
INTERIOR TEMPERATURE
NOTESNone.
The climate control computer receives the interior temperature signal through a wire connection.
To ensure this parameter is correct (without using a thermometer), simply read the temperature information
when the vehicle is cold (in the morning). The interior temperature, the exterior temperature and the engine
coolant temperature should be practically the same.
Another way of checking whether this sensor is correct is to check the resistance value of the sensor according
to temperature: refer to the electrical specifications of the sensor in the Help section.
If the temperature displayed by this parameter seems to be incorrect, apply the fault finding procedure for fault:
DF007 Interior temperature sensor circuit.
AFTER REPAIRRepeat the conformity check from the start.
ACREG X84 1.1
Edition 2
MR-372-J84-62B000$080.mif

62B - 29
CLIMATE CONTROL
Fault finding – Interpretation of parameters62B
V3 MR-372-J84-62B000$080.mif
Vdiag No.: 44
PR006
SOLAR RADIATION
NOTESNone.
The solar sensor is used to improve the comfort level of the air conditioning according to the windscreen solar
radiation.
This sensor measures the solar radiation level and transmits the information to the climate control computer
in the form of a measurement in W/m
2. This measurement ranges from 0 to 400 W. The sensor is faulty if it
gives a value of 400 W although the vehicle is in the shade (in the workshop) as this value equals maximum
solar radiation.
If the value displayed by this parameter seems to be incorrect: check the signal transmitted by the sensor
based on the solar radiation, by measuring between track 2 of the sensor and earth (solar sensor connected
electrically, ignition on and control panel on).
0 W 4.91 V
50 W 4.28 V
100 W 3.70 V
200 W 2.55 V
300 W 1.40 V
400 W 0.30 V
If the fault is still present, apply the fault finding procedure for fault: DF026 Solar sensor circuit.
AFTER REPAIRRepeat the conformity check from the start.
ACREG X84 1.1
Edition 2

62B - 30
CLIMATE CONTROL
Fault finding – Interpretation of parameters62B
V3 MR-372-J84-62B000$080.mif
Vdiag No.: 44
The following table gives the percentages by which the air distribution motor is controlled as well as the opening
status of the lower flaps (footwell flap and under seat duct flap). To view the lower flaps, remove the right-hand and
left-hand lower air ducts.
Values should be checked with the engine switched off and the air conditioning in manual mode (tolerance ± 5%).PR011
DISTRIBUTION FLAP POSITION
NOTESThe values listed below are only given as a guide (they depend on which way the flap
is being moved).
Air distribution
requestPR011
Distribution
flap positionAir flow distribution information
Lower flap
opening status Demisting
flowVent flow Footwell flow
Demisting
100%
High Low NoneCompletely
CLOSED
Demisting + Footwells
60%
High Low HighCompletely
OPEN
Air vents
0%
Low High NoneCompletely
CLOSED
Vents + Footwells
15%
Low High HighApproximately 20%
OPEN
Footwell Ventilation
50%
Average Average HighCompletely
OPEN
AFTER REPAIRRepeat the conformity check from the start.
ACREG X84 1.1
Edition 2

62B - 31
CLIMATE CONTROL
Fault finding – Interpretation of parameters62B
V3 MR-372-J84-62B000$080.mif
Vdiag No.: 44
PR012
MIXER FLAP POSITION
NOTESNone.
The mixer flap moves according to the temperature requested or automatically if the climate control is in
automatic mode.
The mixing motor does not have a position copy potentiometer. This parameter is therefore an indication of the
flap position according to how the motor is being controlled by the climate control computer.
As specified in the conformity check, in the maximum cold position (15 ˚C), the parameter indicates 0% and in
the maximum hot position (27 ˚C), the parameter indicates 100%.
If the value displayed by this parameter seems to be incorrect or if the parameter is correct but the blown air
temperature does not vary according to user requests: apply the fault finding procedure for fault: DF010 Mixing
motor circuit or refer to ALP 6 "No warm air" or ALP 8 "No cold air" depending on the customer complaint
(these fault finding charts are given in Section 62A Air conditioning).
AFTER REPAIRRepeat the conformity check from the start.
ACREG X84 1.1
Edition 2

62B - 32
CLIMATE CONTROL
Fault finding – Interpretation of parameters62B
V3 MR-372-J84-62B000$080.mif
Vdiag No.: 44
Controlled values for engine switched off and engine running with air conditioning in manual mode (tolerance ± 5%).
If the values given above are correct but the passenger compartment blower does not work, refer to fault finding
chart ALP 5 No passenger compartment ventilation. PR019
PASSENGER COMPARTMENT BLOWER PWM SETTING
NOTESThe values listed below are only given as a guide.
Passenger compartment
blower speed setting.SPD 0 SPD 1 SPD 2 SPD 3 SPD 4 SPD 5 SPD 6 SPD 7 SPD 8
PR019 passenger
compartment blower
PWM setting.0% 18% 23% 30% 39% 51% 66% 82% 100%
AFTER REPAIRRepeat the conformity check from the start.
ACREG X84 1.1
Edition 2