RENAULT TWINGO 2009 2.G Heating And Air Conditioning - Climate Control Repair Manual

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CLIMATE CONTROL
Fault finding - Parameter summary table
Tool parameter Diagnostic tool title
PR001Interior temperature
PR002External temperature
PR004Coolant temperature
PR011Distribution flap position
PR012Mixing flap position
PR019Passenger compartment PWM* setting
PR045Current heating* resistor power
PR092Battery voltage
PR122Night lighting level

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CLIMATE CONTROL
Fault finding - Interpretation of parameters
PR001
INTERIOR TEMPERATURE
NOTESNone
The climate control computer receives the interior temperature signal through a wire connection.
Read the temperature signal when the vehicle is cold (in the morning) to check the conformity of this parameter
(without a thermometer). 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 (at the end of the document).
If the temperature displayed by this parameter is implausible, apply the fault finding procedure for fault: DF007
Interior temperature sensor circuit.
AFTER REPAIRRepeat the conformity check from the start.
CLIM_V44_PR001
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Fault finding - Interpretation of parameters
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PR002
EXTERNAL TEMPERATURE
NOTESNone
The climate control computer receives the exterior temperature signal through the multiplex line via the UCH.
Read the temperature signal when the vehicle is cold (in the morning) to check the conformity of this parameter
(without a thermometer). The interior temperature, the exterior temperature and the engine coolant temperature
should be practically the same.
If the temperature displayed by this parameter appears inconsistent: carry out fault finding on the UCH
(see 87B, UCH).
AFTER REPAIRRepeat the conformity check from the start.
CLIM_V44_PR002

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CLIMATE CONTROL
Fault finding - Interpretation of parameters
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PR004
COOLANT TEMPERATURE
NOTESSpecial note:
The climate control computer receives the engine coolant temperature signal through
the multiplex line via the injection system.
Read the temperature signal when the vehicle is cold (in the morning) to check the conformity of this parameter
(without a thermometer). The interior temperature, the exterior temperature and the engine coolant temperature
should be practically the same.
If the temperature displayed by this parameter appears inconsistent, carry out fault finding on the injection system
(see 13B, Diesel injection or 17B, Petrol injection).
AFTER REPAIRRepeat the conformity check from the start.
CLIM_V44_PR004

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CLIMATE CONTROL
Fault finding - Interpretation of parameters
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PR011
DISTRIBUTION FLAP POSITION
NOTESThe values listed below are only given as a guide (they depend on which way the flap
is being moved).
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 off and the climate control in manual mode (tolerance ± 5 %).
Air distribution
requestPR011
Distribution
flap positionAir flow distribution information
Lower flap opening
status Demisting
flowVent flow Footwell flow
Demisting
100 % High Low None Completely closed
Demisting + Footwells
77 % High Low High Completely open
Air vents
0 % Low High None Completely closed
Air vent + Footwells
32 % Low High HighApproximately 20 %
open
Footwell Ventilation
54 % Medium Medium High Completely open
If the request and position read by the computer for PR011 is inconsistent, contact Techline.
AFTER REPAIRRepeat the conformity check from the start.
CLIM_V44_PR011

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CLIMATE CONTROL
Fault finding - Interpretation of parameters
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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 appears inconsistent or if the parameter is consistent but the temperature
of the blown air does not change in accordance with the user's request: apply the fault finding procedure for fault
DF010 "Mixing motor circuit" or consult the fault finding charts ALP 6 No heating or ALP 8 No cold air
depending on the customer complaint.
AFTER REPAIRRepeat the conformity check from the start.
CLIM_V44_PR012

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Fault finding - Interpretation of parameters
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Controlled values with the engine stationary and engine running with heating and ventilation in manual mode
(tolerance ± 5 %).
If the values given above are correct but the passenger compartment blower does not work,
see ALP 5 No passenger compartment ventilation. PR019
PASSENGER COMPARTMENT PWM* SETTING
NOTESThe values listed below are examples only.
Passenger compartment
blower speed settingSPEED
0SPEED
1SPEED
2SPEED
3SPEED
0SPEED
5SPEED
6SPEED
7SPEED
8
PR019 Passenger
compartment blower unit
PWM setpoint.0 % 20 % 25 % 33 % 43 % 50 % 60 % 77 % 100 %
AFTER REPAIRRepeat the conformity check from the start.
CLIM_V44_PR019

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Fault finding - Interpretation of parameters
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PR045
CURRENT HEATING RESISTOR POWER
NOTESNone
The climate control computer receives the exterior temperature signal coming from the injection computer via the
UCH computer through the multiplex line.
This parameter indicates the heating power developed by the passenger compartment heating resistors.
The passenger compartment heating resistors are equipped with three power ratings, each having increments
of 300 W.
The parameter values are therefore 0 W, 300 W, 600 W and 900 W.
If this parameter appears inconsistent, run fault finding on the injection computer (see 13B, Diesel injection
or 17B, Petrol injection).
AFTER REPAIRRepeat the conformity check from the start.
CLIM_V44_PR045

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Fault finding - Interpretation of parameters
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PR092
BATTERY VOLTAGE
NOTESUse the Wiring Diagram Technical Note for the New Twingo.
This parameter specifies the supply voltage of the climate control computer.
This parameter must display a voltage equal to: 10.5 V < X < 14.4 V with the engine running.
Using a multimeter, check the consistency of the parameter by measuring the voltage across the battery
terminals.
If the parameter corresponds with the voltage measured on the battery terminals, run fault finding on the electric
charging circuit.
If the parameter does not correspond with the battery voltage, check the condition and position of fuse F29 (15A)
in the passenger compartment fuse unit.
Consult section 81C Fuses.
Disconnect the connectors of the following components of connection SP2:
●Component connector 615
●Component connector 419
●Component connector 645
●Component connector 319
●Component connector 261
●Component connector 653
●Component connector 1428
With connector A of component 419 disconnected, check the insulation and continuity of connection SP2
between components 419 and 1016.
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 vehicle earth connection NAM of the connector of component 419.
If the connection is faulty (see Technical Note 6015A, Repairing electrical wiring, Wiring: Precautions for the
repair), repair the wiring, otherwise replace the wiring.
If these checks do not reveal any faults, carry out a test on each of the components involved in connection
SP2 (short circuit).
AFTER REPAIRRepeat the conformity check from the start.
CLIM_V44_PR092

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Fault finding - Interpretation of parameters
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PR122
NIGHT LIGHTING LEVEL
NOTESThe climate control computer receives the dimmer lighting level via the instrument
panel through the multiplex line.
This parameter indicates the dimmer lighting level as a percentage.
If this parameter appears inconsistent with the air conditioning control panel lighting, contact Techline.
AFTER REPAIRRepeat the conformity check from the start.
CLIM_V44_PR122