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

62B-57
MR-413-X44-62B000$644_eng.mif
V1
CLIMATE CONTROL
Fault finding - Interpretation of parameters
Vdiag No.: 44
62B
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

62B-58
MR-413-X44-62B000$644_eng.mif
V1
CLIMATE CONTROL
Fault finding - Interpretation of parameters
Vdiag No.: 44
62B
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

62B-59
MR-413-X44-62B000$644_eng.mif
V1
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

62B-60
MR-413-X44-62B000$644_eng.mif
V1
CLIMATE CONTROL
Fault finding - Interpretation of parameters
Vdiag No.: 44
62B
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

62B-61
MR-413-X44-62B000$690_eng.mif
V1
62B
CLIMATE CONTROL
Fault finding - Command summary table
Tool command Diagnostic tool title
AC001Passenger compartment blower unit
AC002Recirculation motor: exterior air
AC003Recirculation motor: recirculation
AC004Mixer motor: maximum cold
AC005Mixer motor: maximum hot
AC006Distribution motor: air vent
AC007Distribution motor: de-icing

Vdiag No.: 44
MR-413-X44-62B000$690_eng.mif

62B-62
MR-413-X44-62B000$736_eng.mif
V1
62B
CLIMATE CONTROL
Fault finding - Interpretation of commands
AC001
PASSENGER COMPARTMENT BLOWER UNIT
NOTESNone
This command is used to ensure that the passenger compartment blower is working. When this command is run
the passenger compartment blower comes on.
If the command does not operate as indicated, consult Fault finding chart 5 No passenger compartment
ventilation.
AFTER REPAIRCheck that the air conditioning function operates correctly.
CLIM_V44_AC001

Vdiag No.: 44
MR-413-X44-62B000$736_eng.mif

62B-63
MR-413-X44-62B000$736_eng.mif
V1
CLIMATE CONTROL
Fault finding - Interpretation of commands

Vdiag No.: 44
62B
AC002
AC003
RECIRCULATION MOTOR: EXTERIOR AIR
RECIRCULATION MOTOR: RECIRCULATION
NOTESWARNING
Do not touch the flap when running the command.
NOTE
The flap is located behind the cabin filter.
This command is used to actuate the air recirculation motor to check that it is working.
When running command AC003, the flap closes. When running command AC002, the flap opens.
If the command does not work as shown, check the mechanical condition of the flap.
If the fault is still present, apply the interpretation of fault DF021 Recirculation motor circuit.
AFTER REPAIRCheck that the air conditioning function operates correctly.
CLIM_V44_AC002 / CLIM_V44_AC003

62B-64
MR-413-X44-62B000$736_eng.mif
V1
CLIMATE CONTROL
Fault finding - Interpretation of commands

Vdiag No.: 44
62B
AC004
AC005
MIXER MOTOR: MAXIMUM COLD
MIXER MOTOR: MAXIMUM HOT
NOTESNOTES:
The flap is located in the air conditioning mechanism.
In order to confirm this command, the engine must be warm in order to be able to
check for the presence of a warm air flow during command AC005.
This command is used to activate the mixing 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 AC004 and check that the air coming out of the air vents is cold (ambient temperature).
Run command AC005 and check that the air coming out of the air vents is warm.
If the command does not operate as indicated, consult the customer complaints:
–Production of cold air, see: ALP 8 No cold air and ALP 9 Too much cold air.
–Production of warm air, see: ALP 6 No heating or loss of heating.
AFTER REPAIRCheck that the air conditioning function operates correctly.
CLIM_V44_AC004 / CLIM_V44_AC005