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

62B-65
MR-413-X44-62B000$736_eng.mif
V1
CLIMATE CONTROL
Fault finding - Interpretation of commands

Vdiag No.: 44
62B
AC006
AC007
DISTRIBUTION MOTOR: AIR VENTS
DISTRIBUTION MOTOR: DE-ICING
NOTESNOTE
The flap is located under the dashboard.
This command is used to activate the ventilation/de-icing distribution flap to check that it is working.
Switch on the ignition, and issue a passenger compartment ventilation request (via the driver's control panel).
Run command AC007 and check that the air comes out by the windscreen.
Run command AC006 and check that the air comes out of the front air vents.
If the command does not operate as indicated, check the air distribution conformity (see ALP 2 Air distribution
fault).
AFTER REPAIRCheck that the air conditioning function operates correctly.
CLIM_V44_AC006 / CLIM_V44_AC007

62B-66
MR-413-X44-62B000$782_eng.mif
V1
62B
CLIMATE CONTROL
Fault finding - Customer complaints
NOTESSpecial notes:
General summary of all of the fault finding charts for each function.
DIALOGUE FAULT
NO DIALOGUE WITH THE COMPUTER ALP 1
AIR DISTRIBUTION PROBLEM
AIR DISTRIBUTION PROBLEM ALP 2
AIR FLOW FAULT ALP 3
INEFFICIENT WINDSCREEN DEMISTING ALP 4
NO PASSENGER COMPARTMENT VENTILATION ALP 5
HEATING FAULT
NO HEATING OR LOSS OF HEATING (section 61A) ALP 6
TOO MUCH HEATING (section 61A) ALP 7
AIR CONDITIONING FAULT
NO COLD AIR ALP 8
TOO MUCH COLD AIR ALP 9
INEFFICIENT REAR SCREEN DE-ICING/DEMISTING ALP 10

Vdiag No.: 44
MR-413-X44-62B000$782_eng.mif

62B-67
MR-413-X44-62B000$782_eng.mif
V1
CLIMATE CONTROL
Fault finding - Customer complaints62B
PASSENGER COMPARTMENT ODOURS
UNPLEASANT ODOURS IN PASSENGER COMPARTMENT ALP 11
WATER IN PASSENGER COMPARTMENT
WATER IS PRESENT IN PASSENGER COMPARTMENT ALP 12
CONTROL PANEL FAULT
NO CONTROL PANEL LIGHTING ALP 13
COMPRESSOR NOISES
COMPRESSOR NOISES ALP 14

62B-68
MR-413-X44-62B000$828_eng.mif
V1
62B
CLIMATE CONTROL
Diagnostic - Fault finding chart
ALP 1 No dialogue with the computer
NOTESSpecial notes: To run fault finding on the vehicle computers, use the key to switch on
the ignition.
Use the W iring Diagram Technical Note for the New Twingo.
Check that the vehicle is equipped with climate control.
Try to establish dialogue with a computer on another vehicle to make sure that the diagnostic tool is not faulty.
If the tool is not at fault, and dialogue cannot be established with any other computer on the same vehicle, the
cause could be a faulty computer interfering on the multiplex network.
Check the battery voltage and perform the necessary operations to obtain a correct voltage (9.5 V < Battery
voltage < 17.5 V, see section 16A Starting-charging).
Check:
–the connection between the diagnostic tool and the diagnostic probe (lead in good condition),
–the connection between the diagnostic sensor and the diagnostic socket (lead in good condition).
Carry out fault finding on the multiplex network using the diagnostic tool (see 88B, Multiplex).
Check the condition and position of fuse F29 (15 A) in the passenger compartment fuse box.
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
Check the insulation and continuity of connection SP2 between components 419 and 1016.
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).
Check the condition and position of fuse F18 (10 A) in the passenger compartment fuse box.
Consult section 81C Fuses.
Disconnect the connectors of the following components of connection BP6:

●Component connector 995
●Component connector 419
AFTER REPAIRCarry out a complete check with the diagnostic tool.
CLIM_V44_ALP1

Vdiag No.: 44
MR-413-X44-62B000$828_eng.mif

62B-69
MR-413-X44-62B000$828_eng.mif
V1
CLIMATE CONTROL
Diagnostic - Fault finding chart

Vdiag No.: 44
62B
ALP 1
CONTINUED
●Component connector 645
Check the insulation and continuity of connection BP6 between components 419 and 1016.
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
BP6 (short circuit).
Ensure that the supply to the diagnostic socket is correct:
Check the condition and position of fuse F12 (5 A) in the passenger compartment fuse box.
Consult section 81C Fuses.
Connector of component 645 of connection BP19 disconnected:
–Check for + after ignition feed on connection BP19 of component 225.
If the + after ignition feed on connection BP 19 is not guaranteed, check component 1016.
–Check connections NAM and MAM of component 225.
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
BP19 (short circuit).
If dialogue has still not been established after these checks, contact the Techline.
AFTER REPAIRCarry out a complete check with the diagnostic tool.
CLIM_V44_ALP1

62B-70
MR-413-X44-62B000$828_eng.mif
V1

Vdiag No.: 44CLIMATE CONTROL
Diagnostic - Fault finding chart62B
ALP 2 Air distribution fault
NOTESNone
Check that the air circuit (cabin filter, scuttle panel grille, air ducts and grilles etc.) is not blocked. Repair, clean
or change the cabin filter if necessary.
Also check that there is no air flow fault: (see ALP 3 Air flow fault).
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.
Set the passenger compartment blower to
maximum speed with maximum hot or maximum
cold and move the air distribution control. Check
that the air outlet is the one selected.
Note:
For information about the air flows according to user
selection, refer to the air distribution table given in
the interpretation of parameter PR011 Distribution
flap position.
Has the customer complaint been confirmed?
YES
Remove the centre console and glovebox
(see MR 412 Bodywork, 57A, Interior equipment,
Removal - refitting procedures).
Remove the distribution motor and check the
condition of the flap control.
Is the flap control damaged?
NO
NOThe air distribution is operating correctly.
Explain to the customer how the system
operates.
YES
Replace the distribution - ventilation unit.
AFTER REPAIRCarry out a complete check with the diagnostic tool.
CLIM_V44_ALP2

62B-71
MR-413-X44-62B000$828_eng.mif
V1

Vdiag No.: 44CLIMATE CONTROL
Diagnostic - Fault finding chart62B
ALP 2
CONTINUED 1
With the distribution motor removed, manually
activate the distribution flaps by turning the centre of
the control fully from one side to the other.
Does the flap cover the whole range of
movement, without any areas of resistance?
YES
Remove the footwell vent ducts (lower ducts) to
check that the lower flap control linkages are
present and correctly fitted (they are connected to
the upper flaps).
Also ensure that lower flaps move when the
distribution flap manual control is operated.
Do the footwell (lower) distribution flaps move
when the distribution flaps are controlled?
YES
NORemove the dashboard in order to check
that there is nothing preventing the flaps
from moving (see MR 412, Bodywork,
57A, Interior accessories, Dashboard:
Removal - Refitting). Carry out any
repairs (eliminate any foreign bodies
which may be blocking the flaps and
lubricate the centre of the flap control).
Replace the distribution - ventilation unit if
it is not possible to repair it.
NOIf the mountings of the lower flap control
linkages are not damaged: resecure the
linkages and grease them slightly. If a
repair is not possible or if the mountings
are damaged: replace the distribution -
ventilation unit.
AFTER REPAIRCarry out a complete check with the diagnostic tool.

62B-72
MR-413-X44-62B000$828_eng.mif
V1

Vdiag No.: 44CLIMATE CONTROL
Diagnostic - Fault finding chart62B
ALP 2
CONTINUED 2
Remove the distribution motor but leave it
electrically connected, send a motor command from
the distribution buttons on the control panel: switch
the distribution flap to the demisting position
(a value of 100 %), then switch the distribution
setting to vent (a value of 0 %).
Is the distribution motor operating?
YES
Visually check that when the distribution flaps are
moved manually (by turning the centre of the
control), moving the control does in fact move the
distribution flaps.
Is movement possible?
YES
End of fault finding.
NOApply fault finding procedure for fault
DF012 Distribution motor circuit.
NOReplace the distribution - ventilation unit
(see MR411, 62B, Climate control,
Distribution motor, Removal -
Refitting).
AFTER REPAIRCarry out a complete check with the diagnostic tool.