2009 RENAULT TWINGO RS Heating And Air Conditioning - Climate Control Workshop Manual

62B-49
MR-413-X44-62B000$552_eng.mif
V1
CLIMATE CONTROL
Fault finding - Interpretation of statuses

Vdiag No.: 44
62B
ET140
AIR CONDITIONING REQUEST
NOTESNote:
For more information, refer to the flowchart for the request to switch on the
compressor (see Air conditioning, General operating mode).
This status specifies whether the request to switch on the compressor has been sent by the climate control
computer to the UCH or not.
When activation of the air conditioning is requested, the status should display ACTIVE.
When activation of the air conditioning is not requested, the status should display INACTIVE.
If the status does not operate as indicated, contact your Techline.
AFTER REPAIRRepeat the conformity check from the start.
CLIM_V44_ET140

62B-50
MR-413-X44-62B000$552_eng.mif
V1
CLIMATE CONTROL
Fault finding - Interpretation of statuses

Vdiag No.: 44
62B
ET141
PASSENGER COMPARTMENT FAN
NOTESSpecial note:
This status is used by the UCH to authorise the request for air conditioning which is
sent to the injection. The UCH sends this signal to the injection to authorise the
request to activate the passenger compartment heating resistors (only on diesel
version): 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 Fault finding chart
(ALP) 5 No passenger compartment ventilation.
If the passenger compartment blower operates correctly but the status displays the message OFF, check that the
passenger compartment blower visual feedback (spiral symbol) on the control panel works correctly (increase in
spiral bargraphs according to the eight speeds).
If the passenger compartment visual feedback (blade symbol) on the instrument panel does not work, contact
your Techline.
If the fault is still present, perform fault finding on the multiplex network (see 88B, Multiplexing).
AFTER REPAIRRepeat the conformity check from the start.
CLIM_V44_ET141

62B-51
MR-413-X44-62B000$598_eng.mif
V1
62B
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

Vdiag No.: 44
MR-413-X44-62B000$598_eng.mif

62B-52
MR-413-X44-62B000$644_eng.mif
V1
62B
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
Vdiag No.: 44
MR-413-X44-62B000$644_eng.mif

62B-53
MR-413-X44-62B000$644_eng.mif
V1
CLIMATE CONTROL
Fault finding - Interpretation of parameters
Vdiag No.: 44
62B
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

62B-54
MR-413-X44-62B000$644_eng.mif
V1
CLIMATE CONTROL
Fault finding - Interpretation of parameters
Vdiag No.: 44
62B
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

62B-55
MR-413-X44-62B000$644_eng.mif
V1
CLIMATE CONTROL
Fault finding - Interpretation of parameters
Vdiag No.: 44
62B
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

62B-56
MR-413-X44-62B000$644_eng.mif
V1
CLIMATE CONTROL
Fault finding - Interpretation of parameters
Vdiag No.: 44
62B
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