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

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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

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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

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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
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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

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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

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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

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CLIMATE CONTROL
Fault finding - Interpretation of parameters
Vdiag No.: 44
62B
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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Vdiag No.: 44CLIMATE CONTROL
Diagnostic - Fault finding chart62B
ALP 3 Air flow fault
NOTESOnly consult this customer complaint after a complete check with the diagnostic
tool.
Check that the customer knows how to work the air conditioning system properly.
Is the passenger compartment blower unit
working?
YES
Check that the air circuit (cabin filter, scuttle panel grille, air vents and extractors etc.) is not blocked.
If necessary, repair, clean or replace the cabin filter (see MR 411 Mechanical, 61A, Heating, Cabin filter:
Removal - Refitting).
Check that the blower blades are in good condition (see MR 412 Bodywork, 57A Interior equipment,
Passenger compartment blower: Removal - refitting).
Check that the blower unit is correctly sealed. Also check that the air distribution ducts (right-hand and left-hand,
upper and lower) are correctly connected to the housing as well as the refrigeration pipe in the glove box (if the
customer complains about a feeling of cold air on the passenger's side).
Repair if necessary.
Check that the air recirculation flap does not remain closed when in the recirculation position. On the diagnostic
tool, status ET062 Recirculation flap position should display OPEN (the flap can be seen by removing the
windscreen frame). Repair if necessary (apply the fault finding procedure for fault DF021 Recirculation motor
circuit).
With the passenger compartment filter removed, put
your hand into the housing to ensure that the
evaporator is not obstructed and that there is no ice.
Is the evaporator obstructed?
NO
NORepair, see ALP 5.
YESRemove the evaporator and clean if it is
obstructed.
If there is ice on the evaporator, carry out
a conformity check on the temperature
sensors (interior, exterior and coolant
temperatures).
Replace any faulty components.
AFTER REPAIRCarry out a complete check with the diagnostic tool.

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Vdiag No.: 44CLIMATE CONTROL
Diagnostic - Fault finding chart62B
ALP 8
CONTINUED 1
1
Using the diagnostic tool statuses and parameters
screen (cold loop sub-function), check that the
temperature signals are consistent (no sensor
deviation resulting in incorrect measurement).
–Using parameters PR002
"exterior temperature", PR064
"coolant temperature" and PR001
"interior temperature".
Are the temperature signals consistent?
YES
Start the engine and switch on the air conditioning
by pressing the AC button (with a request for
maximum cold temperature and the passenger
compartment blower running).
Display the following status in the “User selection”
sub-function screen:
ET140 "air conditioning request" should be
ACTIVE and the “AC” symbol should be displayed
on the air conditioning control panel screen.
Is status ET140 ACTIVE?
YES
NOCarry out a conformity check:
–For the coolant temperature sensor,
see 13B, Diesel injection, Fault
summary table or 17B Petrol
injection, Fault summary table.
–For the exterior temperature sensor,
see 87B, Passenger compartment
connection unit, Fault summary
table.
–For the interior temperature sensor,
see 62B, Climate control, Fault
summary table.
Replace any faulty components.
NOAir conditioning request interpretation fault
on the climate control computer. Carry out
fault finding on the climate control
computer (see interpretation of
statuses).
AFTER REPAIRCarry out a complete check with the diagnostic tool.

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Vdiag No.: 44CLIMATE CONTROL
Diagnostic - Fault finding chart62B
ALP 8
CONTINUED 2
With the engine running at idle speed, use the
diagnostic tool to check that the passenger
compartment central unit sends the start air
conditioning request to the injection computer.
Status ET030 Air conditioning request 2 should
display ACTIVE.
Is status ET030 "ACTIVE"?
YES
Using the diagnostic tool, display (injection cold
loop sub-function screen), the following statuses:
–ET004 Air conditioning authorised,
–ET088 Compressor activation request,
Is status ET004 "YES" and status ET088
"ACTIVE"
NO
Check that the injection computer is correctly configured. Status ET079 CLIMATE CONTROL PRESENT should
display YES (cold loop sub-function screen).
Is status ET079 YES?
YES
NOCheck that the UCH is correctly configured by
viewing the configuration reading LC013 Type
of air conditioning.
Should be “Climate control”
Reconfigure the UCH if necessary.
Check that the UCH is receiving the engine
operating status and passenger compartment
blower signals correctly (for manual air
conditioning). In the Cold Loop sub-function
screen, status ET142 "Engine operating
phase" should display “RUNNING” and status
ET015 "Passenger compartment blower"
should display “ACTIVE” and parameter
PR024 “Exterior temperature” is > 3˚C.
If the parameter and statuses are not correct,
carry out fault finding on the multiplex network
and UCH (interpretation of status ET015,
ET142 and parameter PR024).
YES
NO
Interpretation fault for status ET079, see
conformity check, cold loop sub-function:
–13B, Diesel injection,
–17B, Petrol injection.
AFTER REPAIRCarry out a complete check with the diagnostic tool.