2009 RENAULT TWINGO heating

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-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

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-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

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-73
MR-413-X44-62B000$828_eng.mif
V1

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.