2009 RENAULT SCENIC climate control

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

62B - 33
CLIMATE CONTROL
Fault finding – Interpretation of parameters62B
V3 MR-372-J84-62B000$080.mif
Vdiag No.: 44
PR092
BATTERY VOLTAGE
NOTESNone.
This parameter specifies the supply voltage of the climate control computer.
This parameter should indicate a voltage equal to: 10.5 < X < 14.4 V.
If the voltage is not within the specified range, disconnect connector A (12-track) of the climate control
computer to check the insulation, continuity and absence of interference resistance of the connections:
Computer connector A track 10 + accessories feed (7.5 A fuse in the Protection and
Switching Unit)
Computer connector A track 11 + before ignition feed (20 A fuse of the UCH)
Computer connector A track 6 Earth (left-hand dashboard beam)
Repair if necessary.
If the connections are correct but the fault still persists, perform fault finding on the charging circuit.
AFTER REPAIRRepeat the conformity check from the start.
ACREG X84 1.1
Edition 2

62B - 34
CLIMATE CONTROL
Fault finding – Interpretation of parameters62B
V3 MR-372-J84-62B000$080.mif
Vdiag No.: 44
PR121
BLOWN AIR TEMPERATURE SETTING
NOTESNone.
This parameter is used to control the temperature inside the passenger compartment. This setting is calculated
by the climate control computer according to interior temperature, exterior temperature and coolant
temperature.
This setting is used to control the mixing motor and the request to operate the passenger compartment air
heating resistors (to reach the temperature requested by the user as quickly as possible in order to optimise
passenger compartment comfort quickly).
The following conditions must be satisfied to allow the UCH to control the passenger compartment air heating
resistors:
–Engine running,
–Passenger compartment blower running (minimum speed 1),
–User temperature setting above 20 ˚C (or automatic mode requested),
–Blown air temperature setting above 65 ˚C,
–Interior temperature below 10 ˚C,
–Exterior temperature below 5 ˚C,
–Engine coolant temperature below 65 ˚C,
–Injection authorisation (ET019 Number of RCHs authorised by injection system < at 1),
–Alternator authorisation (ET018 Number of RCHs authorised by alternator < at 1).
Note:
–Statuses ET017, ET018 and ET019 are indicated by the UCH (see conformity check of air conditioning
function: Section 62A).
–The values given below are average values. The UCH calculates the number of passenger compartment
heating resistors to trigger (ET017 number of RCH required).
AFTER REPAIRRepeat the conformity check from the start.
ACREG X84 1.1
Edition 2