RENAULT TWINGO 2009 2.G Heating And Air Conditioning - Climate Control Owner's Guide

62B-31
MR-413-X44-62B000$414_eng.mif
V1
CLIMATE CONTROL
Fault finding - Interpretation of faults

Vdiag No.: 44
62B
DF021
PRESENT
OR
STORED RECIRCULATION MOTOR CIRCUIT
CO : Open circuit
CC.0 : Short circuit to earth
CC.1 : Short circuit to + 12 V
NOTESConditions for running fault finding on a present or stored fault:
The fault is declared present with the air conditioning panel on and the recirculation
control activated (recirculation selected for flap closed or exterior air selected for flap
open).
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 for 1 minute, switch the ignition off and then back on again.
In extreme temperatures (above 35 ˚C) and when the climate control is switched on,
the recirculation flap sets itself to the recirculation position in order to correct the
passenger compartment temperature more quickly.
Use the Wiring Diagram Technical Note for the New Twingo.
Check the condition and connection of the connector of component 475.
If the connector is faulty (see Technical Note 6015A, Repairing electrical wiring, Wiring: Precautions for the
repair), repair the connector, otherwise replace the wiring.
With connector B of component 419 disconnected, check the insulation and continuity of the following
connections between components 419 and 475:
●connection 38JA
●connection 38JB
If the connection or connections are faulty (see Technical Note 6015A, Repairing electrical wiring, Wiring:
Precautions for repair), repair the wiring, otherwise replace it.
Check the resistance of component 475 between connections 38JA and 38JB.
If the connection or connections are faulty (see Technical Note 6015A, Repairing electrical wiring, Wiring:
Precautions for repair), repair the wiring, otherwise replace it.
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, contact the Techline.
AFTER REPAIRClear the stored faults.
Follow the instructions to confirm repair.
If the motor has been replaced (see Configuration and programming).
Deal with any other faults.
CLIM_V44_DF021

62B-32
MR-413-X44-62B000$460_eng.mif
V1
62B
CLIMATE CONTROL
Fault finding - Conformity check
SUB-FUNCTION: PASSENGER COMPARTMENT VENTILATION
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(fault reading and configuration checks).
Application conditions: engine stopped with ignition on (12 V APC), AIR
CONDITIONING OFF (air conditioning compressor not activated).
Note:
–Read the parameters when the vehicle is cold (in the morning) to check the
conformity of the temperature parameters (without thermometer). The two
temperatures should be practically the same (as should the coolant temperature
given by the injection system).
–The invalid values given in this check correspond to the value sent by the diagnostic
tool (substitute value) when the sensor in question is faulty. A sensor fault can be
detected when these invalid values are displayed (this is an important point for
sensors on which fault finding cannot be performed, e.g. exterior temperature
sensor).
Delayed illumination of the exterior temperature sensor LCD indicates that an invalid
value has been received concerning the exterior temperature sensor.
FunctionParameter or Status
checked or ActionDisplay and Notes Fault finding
Passenger
compartment
blowerET141:Passenger
compartment
blowerRUNNING
or
STOPPED
After a user requestIn the event of a fault, refer to the
interpretation of this status.
PR019:Passenger
compartment
fan PWM settingSpeed 0 = 0 %
Speed 8 = 100 %
Note:
The PWM signal is a
modulated control
voltage used to control
the air conditioning
blower power module.If there is a fault or for more
information (to find the
intermediate speed
percentages), refer to the
interpretation of this
parameter.
Note:
If the parameter varies correctly,
but the passenger compartment
blower unit does not operate:
consult ALP 5 "Air flow fault"
Air flapsPR012:Mixing flap
positionFrom 0 % (“Maximum
cold” position: 15 ˚C)
to 100 % (“Maximum
hot” position: 27 ˚C).In the event of a fault, see the
interpretation of this
parameter.
ET062:Recirculation
flap positionOPEN if the flap is in the
external air position.
CLOSED if the flap is in
the recirculation
position.In the event of a fault, refer to the
interpretation of this status.
PR011:Distribution flap
positionFrom 0 % (Air vent
position)
to 100 % (De-icing
position)In the event of a fault, see the
interpretation of this
parameter.
CLIM_V44_CCONF

Vdiag No.: 44
MR-413-X44-62B000$460_eng.mif

62B-33
MR-413-X44-62B000$460_eng.mif
V1

Vdiag No.: 44CLIMATE CONTROL
Fault finding - Conformity check62B
SUB-FUNCTION: PASSENGER COMPARTMENT VENTILATION (CONTINUED)
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(fault reading and configuration checks).
Application conditions: engine stopped with ignition on (12 V APC), CLIMATE
CONTROL OFF (air conditioning compressor not engaged).
FunctionParameter or Status
checked or ActionDisplay and Notes Fault finding
TemperaturesPR001: Interior
temperatureX = interior
temperature ± 5 ˚C
(invalid value: 87.5 ˚C)In the event of a fault, see the
interpretation of this parameter.
PR002: External
temperatureX = exterior
temperature ± 5 ˚C
(invalid value: 215 ˚C)In the event of a fault, see the
interpretation of this parameter
Note:
This parameter is displayed via the
climate control computer but is
generated by the UCH.
Motor activationAC001:Passenger
compartment
blowerWhen this command is
run the passenger
compartment blower
comes on.In the event of a fault, refer to the
interpretation of this command.
AC002:Recirculation
motor: exterior airThis command is used to
actuate the air
recirculation motor to
check that it is working.In the event of a fault, refer to the
interpretation of this command.
AC003:Recirculation
motor:
recirculationThis command is used to
actuate the air
recirculation motor to
check that it is working.In the event of a fault, refer to the
interpretation of this command.
AC007:Distribution
motor: de-icingThis command is used to
activate the ventilation/
de-icing distribution flap
to check that it is working.In the event of a fault, refer to the
interpretation of this command.
AC006:Distribution
motor: air ventThis command is used to
activate the ventilation/
de-icing distribution flap
to check that it is working.In the event of a fault, refer to the
interpretation of this command.
AC004:Mixer motor:
maximum coldThis command is used to
activate the mixing flap to
check that it is working.In the event of a fault, refer to the
interpretation of this command.
AC005:Mixer motor:
maximum hotIn the event of a fault, refer to the
interpretation of this command.

62B-34
MR-413-X44-62B000$460_eng.mif
V1

Vdiag No.: 44CLIMATE CONTROL
Fault finding - Conformity check62B
COLD LOOP SUB-FUNCTION
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(fault reading and configuration checks).
Application conditions: engine stopped with ignition on (12 V APC), CLIMATE
CONTROL OFF (air conditioning compressor not engaged).
FunctionParameter or Status
checked or ActionDisplay and Notes Fault finding
Request to engage
the compressorET140:Air conditioning
requestINACTIVEIn the event of a fault, refer to the
interpretation of this status.
Passenger
compartment
blowerET141:Passenger
compartment
blowerRUNNING
or
STOPPED
After a user requestIn the event of a fault, refer to the
interpretation of this status.
CompressorET020:Compressor
controlINACTIVEIn the event of a fault, refer to the
interpretation of this status.
TemperaturesPR001:Interior
temperatureX = interior
temperature ± 5 ˚C
(invalid value: 87.5 ˚C)In the event of a fault, see the
interpretation of this
parameter.
PR002:External
temperatureX = exterior
temperature ± 5 ˚C
(invalid value: 215 ˚C)In the event of a fault, see the
interpretation of this
parameter
Note:
This parameter is displayed via
the climate control computer but
is generated by the UCH.
Air flapsPR012:Mixing flap
positionFrom 0 % (“Maximum
cold” position: 15 ˚C)
to 100 % (“Maximum
hot” position: 27 ˚C).In the event of a fault, see the
interpretation of this
parameter.

62B-35
MR-413-X44-62B000$460_eng.mif
V1

Vdiag No.: 44CLIMATE CONTROL
Fault finding - Conformity check62B
HEATING SUB-FUNCTION
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(fault reading and configuration checks).
Application conditions: engine stopped with ignition on (12 V APC), CLIMATE
CONTROL OFF (air conditioning compressor not engaged).
FunctionParameter or Status
checked or ActionDisplay and Notes Fault finding
Heated rear screenET086:Heated rear
screen: manual
modeINACTIVE In the event of a fault, refer to the
interpretation of this status.
ET085:Heated rear
screen:
automatic modeINACTIVE In the event of a fault, refer to the
interpretation of this status.
Passenger
compartment
ventilatorET141:Passenger
compartment
ventilatorRUNNING
or
STOPPED
After a user requestIn the event of a fault, refer to the
interpretation of this status.
Air mixing motorPR012:Mixing flap
positionFrom 0 % (“Maximum
cold” position: 15 ˚C)
to 100 % (“Maximum
hot” position: 27 ˚C).In the event of a fault, see the
interpretation of this
parameter.
HeatingPR045:Current heating
resistor power0 WIn the event of a fault, see the
interpretation of this
parameter.
TemperaturePR001:Interior
temperatureX = interior
temperature ± 5 ˚C
(invalid value: 87.5 ˚C)In the event of a fault, see the
interpretation of this
parameter.
PR002:External
temperatureX = exterior
temperature ± 5 ˚C
(invalid value: 215 ˚C)In the event of a fault, consult the
interpretation of this
parameter.
Note:
This parameter is displayed via
the climate control computer but
is generated by the UCH.
PR004:Coolant
temperatureX = engine coolant
temperature in ˚CIn the event of a fault, see the
interpretation of this
parameter.

62B-36
MR-413-X44-62B000$460_eng.mif
V1

Vdiag No.: 44CLIMATE CONTROL
Fault finding - Conformity check62B
MAIN SCREEN
NOTESOnly carry out this conformity check after a full check using the diagnostic tool
(fault reading and configuration checks).
Application conditions: engine stopped with ignition on (12 V APC), AIR
CONDITIONING OFF (air conditioning compressor not activated).
Note:
This page lists the statuses and parameters provided by the climate control computer
but which are not associated with the three sub-functions given in the conformity
check (PASSENGER COMPARTMENT VENTILATION, COLD LOOP and HEATING
sub-functions).
FunctionParameter or Status
checked or ActionDisplay and Notes Fault finding
Electrical suppliesPR092:Battery voltage10.5 V < X <14.4 VIn the event of a fault, see the
interpretation of this
parameter.
ET083:+ 12 V after
ignition present ABSENT: 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, refer to the
interpretation of this status.
PR122:Night lighting
level15 % = minimum
lighting level
99 % = maximum
lighting level
(side lights
off: 102 %)In the event of a fault, refer to the
interpretation of this status.
Note:
This parameter is displayed via
the climate control computer but
is generated by the instrument
panel.

62B-37
MR-413-X44-62B000$460_eng.mif
V1

Vdiag No.: 44CLIMATE CONTROL
Fault finding - Conformity check62B
SUB-FUNCTION: PASSENGER COMPARTMENT VENTILATION
NOTESOnly carry out this conformity check after a full check using the diagnostic tool
(fault reading and configuration checks).
Application conditions: engine running, AIR CONDITIONING ON (air conditioning
compressor activated).
Note:
–Read the parameters when the vehicle is cold (in the morning) to check the
conformity of the temperature parameters (without thermometer). The two
temperatures should be practically the same (as should the coolant temperature
given by the injection system).
–The invalid values given in this check correspond to the value sent by the diagnostic
tool (substitute value) when the sensor in question is faulty. A sensor fault can be
detected when these invalid values are displayed (this is an important point for
sensors on which fault finding cannot be performed, e.g. exterior temperature
sensor).
FunctionParameter or Status
checked or ActionDisplay and Notes Fault finding
Passenger
compartment
blowerPR019: Passenger
compartment
fan PWM settingSpeed 0 = 0 %
Speed 8 = 100 %
Note:
The PWM signal is a
modulated control
voltage used to control
the air conditioning
blower power module.If there is a fault or for more
information (to find the
intermediate speed
percentages), refer to the
interpretation of this
parameter.
Note:
If the parameter varies correctly,
but the passenger compartment
blower unit is not working: refer to
fault finding chart no. 5.
ET141: Passenger
compartment
blowerRUNNING
or
STOPPED
After a user request.In the event of a fault, refer to the
interpretation of this status.
Air flapsPR012: Mixing flap
positionFrom 0 % (“Maximum
cold” position: 15 ˚C)
to 100 % (“Maximum
hot” position: 27 ˚C).In the event of a fault, see the
interpretation of this
parameter.
ET062: Recirculation
flap positionOPEN if the flap is in the
external air position.
CLOSED if the flap is in
the recirculation
position.In the event of a fault, refer to the
interpretation of this status.
PR011: Distribution flap
positionFrom 0 % (Air vent
position)
to 100 % (De-icing
position).In the event of a fault, refer to the
interpretation of this status.

62B-38
MR-413-X44-62B000$460_eng.mif
V1

Vdiag No.: 44CLIMATE CONTROL
Fault finding - Conformity check62B
SUB-FUNCTION: PASSENGER COMPARTMENT VENTILATION (CONTINUED)
NOTESOnly carry out this conformity check after a full check using the diagnostic tool
(fault reading and configuration checks).
Application conditions: engine running, (12 V APC) AIR CONDITIONING ON
(air conditioning compressor activated).
FunctionParameter or Status
checked or ActionDisplay and Notes Fault finding
TemperaturesPR001:Interior
temperatureX = interior
temperature ± 5 ˚C
(invalid value: 87.5 ˚C)In the event of a fault, see the
interpretation of this
parameter.
PR002:External
temperatureX = exterior
temperature ± 5 ˚C
(invalid value: 215 ˚C)In the event of a fault, see the
interpretation of this
parameter.
Note:
This parameter is displayed via
the climate control computer but
is generated by the UCH.

62B-39
MR-413-X44-62B000$460_eng.mif
V1

Vdiag No.: 44CLIMATE CONTROL
Fault finding - Conformity check62B
COLD LOOP SUB-FUNCTION
NOTESOnly carry out this conformity check after a full check using the diagnostic tool
(fault reading and configuration checks).
Application conditions: engine running, AIR CONDITIONING ON (air conditioning
compressor activated).
FunctionParameter or Status
checked or ActionDisplay and Notes Fault finding
Request to activate
the compressorET140:Air conditioning
requestACTIVE In the event of a fault, refer to the
interpretation of this status.
Passenger
compartment
blowerET141:Passenger
compartment
blowerRUNNINGIn the event of a fault, refer to the
interpretation of this status.
CompressorET020:Compressor
controlACTIVEIn the event of a fault, refer to the
interpretation of this status.
TemperaturePR001:Interior
temperatureX = interior
temperature ± 5 ˚C
(invalid value: 87.5 ˚C)In the event of a fault, see the
interpretation of this
parameter.
PR002:External
temperatureX = exterior
temperature ± 5 ˚C
(invalid value: 215 ˚C)In the event of a fault, see the
interpretation of this
parameter
Note:
This parameter is displayed via
the climate control computer but
is generated by the UCH.
Air flapsPR012:Mixing flap
positionFrom 0 % (“Maximum
cold” position: 15 ˚C)
to 100 % (“Maximum
hot” position: 27 ˚C).In the event of a fault, see the
interpretation of this
parameter.

62B-40
MR-413-X44-62B000$460_eng.mif
V1

Vdiag No.: 44CLIMATE CONTROL
Fault finding - Conformity check62B
HEATING SUB-FUNCTION
NOTESOnly carry out this conformity check after a full check using the diagnostic tool
(fault reading and configuration checks).
Application conditions: engine running, AIR CONDITIONING ON (air conditioning
compressor activated).
Order FunctionParameter or Status
checked or ActionDisplay and Notes Fault finding
1Heated rear
screenET086: Heated rear
screen: manual
modeACTIVE: De-icing
request using the control
button.
INACTIVE otherwise.In the event of a fault, refer
to the interpretation of this
status.
ET085:Heated rear
screen:
automatic modeACTIVE: De-icing
request using the control
button. (“see clear”
function)
INACTIVE otherwise.In the event of a fault, refer
to the interpretation of this
status.
2Passenger
compartment
blowerET141:Passenger
compartment
blowerRUNNINGIn the event of a fault, refer
to the interpretation of this
status.
3Air mixing
motorPR012:Mixing flap
positionFrom 0 % (“Maximum
cold” position: 15 ˚C
to 100 % = “Maximum
hot” position: 27 ˚C).In the event of a fault, see
the interpretation of this
parameter.
4HeatingPR045:Current heating
resistor power0 < X < 900 WIn the event of a fault, see
the interpretation of this
parameter.
5TemperaturePR001:Interior
temperatureX = interior
temperature ± 5 ˚C
(invalid value: 87.5 ˚C)In the event of a fault, see
the interpretation of this
parameter.
PR002: External
temperatureX = exterior
temperature ± 5 ˚C
(invalid value: 215 ˚C)In the event of a fault, see
the interpretation of this
parameter
Note:
This parameter is displayed
via the climate control
computer but is generated
by the UCH.
PR004:Coolant
temperatureX = engine coolant
temperature in ˚C.In the event of a fault, see
the interpretation of this
parameter.