ABS RENAULT SCENIC 2009 J84 / 2.G Air Conditioning Climate Control Workshop Manual

62B-15
CLIMATE CONTROL
Fault finding – Interpretation of faults62B
V3 MR-372-J84-62B000$060.mif
Vdiag No.: 44
DF007
PRESENT
OR
STOREDINTERIOR TEMPERATURE SENSOR CIRCUIT
CC.0 : Short circuit to earth
CO.1 : Short circuit or open circuit to + 12 V
NOTESConditions for applying the fault finding procedure to stored faults:
Apply this fault finding procedure if the fault appears as present or stored again after:
–switching on the ignition and switching on the climate control.
Special notes:
The internal temperature sensor (linked to a micro-turbine, depending on vehicle
equipment) is located at the top of the roof in the unit underneath the rear view mirror.
Check the connection and condition of the internal temperature sensor connector.
Replace the connector if necessary.
With the ignition on ("forced" + after ignition: see Introduction), check that the temperature sensor micro-
turbine is working correctly.
If it is not working, check for the presence of +12 V on track 1 of the temperature sensor connector and an
earth on track 3.
If the micro-turbine supply is correct and the micro-turbine does not operate, replace the component: sensors
+ micro-turbine (the micro-turbine is not available as a separate part).
Disconnect connector A (12-track) from the climate control computer in order to check the insulation,
continuity and absence of interference resistance on the connections:
Computer connector A track 5 Track 4 of the internal temperature sensor
Computer connector A track 12 Track 5 of the internal temperature sensor
Track 1 of the solar radiation sensor
Repair if necessary.
Check the resistance value of the sensor between:
track 4 and track 5 of the internal temperature sensor connector. Replace the sensor if the resistance is not:
10 kΩΩ Ω Ω

±± ± ±
500 ΩΩ Ω Ω
at 25˚C (for more details, refer to the electrical specifications of the sensor according to
temperature in the Help section).
If the fault is still present, replace the internal temperature sensor.
AFTER REPAIRIf the computer has been replaced (at the request of the Techline): reconfigure the
computer (see section Configurations and Programming).
Deal with any other faults.
ACREG X84 1.1
Edition 2

62B-16
CLIMATE CONTROL
Fault finding – Interpretation of faults62B
V3 MR-372-J84-62B000$060.mif
Vdiag No.: 44
DF010
PRESENT
OR
STOREDMIXING MOTOR CIRCUIT
CO.0 : Open circuit or short circuit to earth
CC.1 : Short circuit to + 12 V
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present after:
–switching the climate control panel on and pressing the temperature control
(minimum or maximum temperature request).
Special notes:
–After repairing the fault (when the fault switches from "present" to "stored"), wait for
1 minute before the climate control computer is able to control the distribution motor.
To avoid having to wait, switch the ignition off and then back on again.
–There is no specific programming operation for the mixer motor, however, after it has
been replaced, the motor needs to program its limits (minimum and maximum).
Check the connection and condition of the connector for the mixing motor.
Replace the connector if necessary.
Disconnect connector B (18-track) from the climate control computer in order to check the insulation,
continuity and the absence of interference resistance of the following connections:
For all Mégane vehicles:
Computer connector B track 18 Track 4 of the mixing motor
Computer connector B track 8 Track 2 of the mixing motor
Track 2 of the distribution motor
Computer connector B track 16 Track 6 of the mixing motor
For Mégane vehicles other than Scénic:
Computer connector B track 17 Track 3 of the mixing motor
Computer connector B track 15 Track 1 of the mixing motor
For Mégane Scénics:
Computer connector B track 17 Track 1 of the mixing motor
Computer connector B track 15 Track 3 of the air mixing flap motor
Repair if necessary.
AFTER REPAIRClear the fault memory.
Follow the instructions to confirm repair.
If the motor has been replaced, refer to the Configurations and Programming
section.
Deal with any other faults.
ACREG X84 1.1
Edition 2

62B-18
CLIMATE CONTROL
Fault finding – Interpretation of faults62B
V3 MR-372-J84-62B000$060.mif
Vdiag No.: 44
DF012
PRESENT
OR
STOREDDISTRIBUTION MOTOR CIRCUIT
CO.0 : Open circuit or short circuit to earth
CC.1 : Short circuit to + 12 V
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present after:
–switching the climate control panel on and pressing the distribution control (selection
set to de-icing, ventilation, footwells, etc.).
Special notes:
–After repairing the fault (when the fault switches from "present" to "stored"), wait for
1 minute before the climate control computer is able to control the distribution motor.
To avoid having to wait, switch the ignition off and then back on again.
–There is no specific programming operation for the distribution motor, however, after
it has been replaced, the motor needs to program its limits (minimum and maximum).
Check the connection and condition of the distribution motor connector.
Replace the connector if necessary.
Disconnect connector B (18-track) from the climate control computer in order to check the insulation,
continuity and the absence of interference resistance of the following connections:
Computer connector B track 11 track 1 of the distribution motor
Computer connector B track 12 track 6 of the distribution motor
Computer connector B track 13 track 3 of the distribution motor
Computer connector B track 14 track 4 of the distribution motor
Computer connector B track 8 track 2 of the distribution motor
track 2 of the mixing motor
Repair if necessary.
With the climate control computer connector connected and the ignition on (climate control panel on), ensure
that there is a 12 V supply on track 2 of the distribution motor connector. If the supply is not present and if no
faulty connections are detected during the continuity checks: contact your Techline.
AFTER REPAIRClear the fault memory.
Follow the instructions to confirm repair.
If the motor has been replaced, refer to the Configurations and Programming
section.
Deal with any other faults.
ACREG X84 1.1
Edition 2

62B-20
CLIMATE CONTROL
Fault finding – Interpretation of faults62B
V3 MR-372-J84-62B000$060.mif
Vdiag No.: 44
DF021
PRESENT
OR
STOREDRECIRCULATION MOTOR CIRCUIT
CO : Open circuit
CC.0 : Short circuit to earth
CC.1 : Short circuit to + 12 V
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present after:
–air conditioning panel lit and recirculation control pressed (select "recirculation" to
close the flap or "external air" to open the flap).
Special notes:
Climate control does not have automatic recirculation. However, in extreme
temperatures (above 35 ˚C) and when the air conditioning is switched on, the
recirculation flap sets itself to the recirculation position in order to warm up the
passenger compartment more quickly.
Check the connection and condition of the recirculation motor.
Replace the connector if necessary.
Disconnect connector B (18-track) from the climate control computer in order to check the insulation,
continuity and the absence of interference resistance of the following connections:
Computer connector B track 10 Track 6 of the recirculation motor
Computer connector B track 1 Track 5 of the recirculation motor
Check the resistance value of the recirculation motor by measuring between:
track 5 and track 6 of the recirculation motor connector. Replace the motor if the resistance is not: 35 ΩΩ Ω Ω
± 5 ΩΩ Ω Ω

at 20˚C.
If the fault is still present, remove the scuttle panel grille beneath the windscreen to look at the recirculation
flap. Run a recirculation command by pressing the air conditioning control panel button: the flap should close.
The flap should close during the command. During the command, check that the recirculation motor flap closes
without any stiff points and without jamming.
Repair if necessary.
If the fault is still present, replace the recirculation motor.
AFTER REPAIRClear the fault memory.
Follow the instructions to confirm repair.
Deal with any other faults.
ACREG X84 1.1
Edition 2

62B-21
CLIMATE CONTROL
Fault finding – Interpretation of faults62B
V3 MR-372-J84-62B000$060.mif
Vdiag No.: 44
DF026
PRESENT
OR
STOREDSOLAR RADIATION SENSOR CIRCUIT
CC.0 : Short circuit to earth
CO.1 : Short circuit or open circuit to + 12 V
NOTESConditions for applying the fault finding procedure to stored faults:
Apply this fault finding procedure if the fault appears as present or stored again after:
–clearing the fault and switching the ignition off then back on.
Special notes:
The solar sensor (a little black button) is located on top of the dashboard, on the
windscreen side.
Check that the solar sensor is not "shaded" by any objects (nothing should be placed on top of the sensor).
Check the connection and condition of the solar radiation sensor connector.
Replace the connector if necessary.
Disconnect connector A (12-track) from the climate control computer in order to check the insulation,
continuity and absence of interference resistance of the connections:
Computer connector A track 4 Track 2 of the solar radiation sensor
Computer connector A track 12 Track 1 of the solar radiation sensor
Track 5 of the internal temperature sensor
Repair if necessary.
With the ignition on, the solar radiation sensor electrically connected and the climate control panel on, ensure
that the solar radiation sensor supplies a voltage (signal) to the climate control computer.
To find out the voltage that the sensor should be supplying as a function of solar radiation intensity, consult the
interpretation of this parameter (Interpretation of parameters section).
If the fault is still present, replace the solar radiation sensor.
AFTER REPAIRClear the fault memory.
Deal with any other faults.
ACREG X84 1.1
Edition 2

62B - 22
CLIMATE CONTROL
Fault finding – Interpretation of statuses62B
V3 MR-372-J84-62B000$070.mif
Vdiag No.: 44
CLIMATE CONTROL
Fault finding – Interpretation of statuses
ET007
COMPUTER + AFTER IGNITION FEED
NOTESNone.
This status shows the + 12 V after ignition feed supplied by the Protection and Switching Unit.
When the ignition is off, the status displays: ABSENT.
When the ignition is on, the status displays: PRESENT.
If the fault is still present, carry out fault finding on the Protection and Switching Unit: Check that status
ET003 After ignition relay control is working correctly and check that fault DF001 After ignition relay control
circuit is not present.
Carry out any repairs necessary (see corresponding fault finding procedures).
If the fault is still present: disconnect connector A (12-track) from the climate control computer to check the
insulation, continuity and absence of interference resistance of the following 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 and the climate control computer is correctly supplied but the fault is still present:
carry out fault finding on the electric charge circuit.
AFTER REPAIRRepeat the conformity check from the start.
ACREG X84 1.1
Edition 2
MR-372-J84-62B000$070.mif

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 - 40
CLIMATE CONTROL
Fault finding – Conformity check62B
V3 MR-372-J84-62B000$090.mif
Vdiag No.: 44
MAIN SCREEN
NOTESOnly carry out this conformity check after a full check with the diagnostic tool (fault
reading and configuration checks).
Test conditions: engine off, ignition on (forced 12 V After ignition).
Air conditioning off (air conditioning compressor not triggered).
Special note:
The various conformity checks for the air conditioning function are explained in the
Introduction section.
Note:
This page lists the statuses and parameters provided by the climate control computer
but which are not associated with the four sub-functions given in the conformity check
(PASSENGER COMPARTMENT VENTILATION, COLD LOOP, USER SELECTION
and HEATING sub-functions).
Order FunctionParameter or Status
checked or Action Display and Notes Fault finding
1Electrical
suppliesPR092:Battery voltage10.5 < X < 14.4 VIn the event of a fault, see
the interpretation of this
parameter
ET007:+ after ignition
computer feedABSENT: Ignition off.
PRESENT: Ignition on.In the event of a fault, refer
to the interpretation of
this status.
ET002:+ 12 V side
lightsABSENT: Side lights
off.
PRESENT: Side lights
on.In the event of a fault,
consult the interpretation
of this status (see 87B,
Passenger compartment
connection unit).
PR122:Night-time
lighting level6% = minimum lighting
level.
99% = maximum
lighting level.
(side lights off: 102%)In the event of a fault, refer
to the interpretation of
parameter PR111 Lighting
dimmer voltage (see 83A,
Instrument panel).
ACREG X84 1.1
Edition 2

62B-43
CLIMATE CONTROL
Fault finding – Fault Finding Chart62B
V3 MR-372-J84-62B000$110.mif
Vdiag No.: 44
CLIMATE CONTROL
Fault finding – Fault Finding Chart
ALP 1 No dialogue with the computer
NOTESNone.
Try the diagnostic tool on another vehicle.
Check:
–the connection between the diagnostic tool and the diagnostic sensor (wiring in good condition),
–the connection between the vehicle's diagnostic sensor and the diagnostic socket (cable in good condition),
–the injection, engine and passenger compartment fuses.
Check for + 12 V battery on track 16, and + 12 V after ignition feed on track 1 and an earth on track 5 and
on track 4 of the diagnostic socket.
Repair if necessary.
Disconnect the connector from the climate control computer in order to check the insulation, continuity and
the absence of interference resistance of the following connections:
Climate control computer 12-track connector:
Track 11 + before ignition (see the vehicle wiring diagram)
Track 10 + accessories feed (see the vehicle wiring diagram)
Track 6 Earth
Track 7 Track 6 of the diagnostic socket (CAN H)
Track 1 Track 14 of the diagnostic socket (CAN L)
Repair if necessary (see the vehicle wiring diagram).
AFTER REPAIRPerform a complete check using the diagnostic tool.
ACREG X84 1.1
Edition 2

62B-50
CLIMATE CONTROL
Fault finding – Fault Finding Chart62B
V3 MR-372-J84-62B000$110.mif
Vdiag No.: 44
ALP 5 No passenger compartment ventilation
NOTESOnly consult this customer complaint after a complete check using the
diagnostic tool.
Special notes:
The 2 x 5-track intermediate connector is located on the LH side of the distribution /
ventilation unit (behind a plastic cover) and the passenger compartment fan control
module is located slightly higher up, below the heater matrix pipes.
Check that the fusesare in good condition.
Using the diagnostic tool, check that the passenger compartment fan
control setting given by the computer varies from 0 to 100% by checking
parameter PR019 Passenger compartment fan PWM setpoint
(refer to the interpretation of this status).
Does the value vary?
YES
Check that the control voltage (PWM) (modulated control voltage) of the passenger
compartment fan power module varies between 5 and 12 V (from 0 to 100%) by
measuring between track 6 of the module's 6-track connector and earth
(connector connected).
Note:
The check procedure is given in the Help section.
Does the voltage vary correctly?
NO
Check the insulation, continuity and absence of interference resistance on the
following connection:
Air conditioning computer 18-track
connector
track 7
Repair if necessary.Power module 6-track connectortrack 6
With the ignition on, check for +12 V accessories feed on track B1 and an earth on track B5
of the black 2 x 5 track intermediate connector (screwed to the base of the console).
Repair if necessary.
NO
YES Contact your
TECHLINE.
AFTER REPAIRPerform a complete check using the diagnostic tool.
ACREG X84 1.1
Edition 2