2009 RENAULT TWINGO RS technical

Heating and
air conditioning system
"The repair procedures given by the manufacturer in this document are based on the
technical specifications current when it was prepared.
The procedures may be modified as a result of changes introduced by the
manufacturer in the production of the various component units and accessories from
which his vehicles are constructed."
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All rights reserved by Renault s.a.s.
Edition Anglaise
Copying or translating, in part or in full, of this document or use of the service part
reference numbering system is forbidden without the prior written authority of
Renault s.a.s.
© Renault s.a.s.
V1 MR-413-X44-62B000$000_engTOC.mif
CLIMATE CONTROL
Vdiag No.: 44
Fault finding - Introduction 62B - 2
Fault finding - List and location of components 62B - 8
Fault finding - Role of components 62B - 10
Fault finding - Operating diagram 62B - 16
Fault finding - Function 62B - 17
Fault finding - Replacement of components 62B - 21
Fault finding - Configuration and programming 62B - 22
Fault finding - Fault summary table 62B - 24
Fault finding - Interpretation of faults 62B - 25
Fault finding - Conformity check 62B - 32
Fault finding - Status summary table 62B - 42
Fault finding - Interpretation of statuses 62B - 45
Fault finding - Interpretation of parameters 62B - 52
Fault finding - Command summary table 62B - 61
Fault finding - Interpretation of commands 62B - 62
Fault finding - Customer complaints 62B - 66
Diagnostic - Fault finding chart 62B - 68
Fault finding - Help 62B - 96
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CLIMATE CONTROL
Fault finding - Introduction
1. SCOPE OF THIS DOCUMENT
This document presents the fault finding procedure applicable to all computers with the following specifications:
2. PREREQUISITES FOR FAULT FINDING
Documentation type
Fault finding procedures (this document and the Technical Notes concerning the injection system fitted to
the vehicle, and the UCH):
–Assisted fault finding (integrated into the diagnostic tool), Dialogys.
Wiring Diagrams:
–Visu-Schéma (CD-ROM), paper.
Type of diagnostic tools
–CLIP + multiplex line sensor
Special tooling required
3. REMINDERS
Procedure
To run fault finding on the vehicle computers, proceed as follows:
–turn the ignition key to APC,
–connect the diagnostic tool and perform the required operations.
To cut off the + after ignition feed, proceed as follows:
–disconnect the diagnostic tool,
–turn the ignition key to OFF,
–switch off the ignition. Vehicle(s): New Twingo
Function concerned: Climate controlComputer name: CAREG
Vdiag No.: 44
Special tooling required
Multimeter
Elé. 1681 Universal bornier
CLIM_V44_PRELI

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Vdiag No.: 44CLIMATE CONTROL
Fault finding - Introduction62B
4. FAULT FINDING PROCEDURE
Perform a pre-diagnostic on the
system
Print the system fault finding log
(available on CLIP and in the
Workshop Repair Manual or
Technical Note)
Connect CLIP
no
Dialogue with
computer?
yes
Read the faults
no
Faults
present
yes
Deal with present faults
Deal with stored faults
no
The cause is
still presentFault
solved
yes
See ALP no. 1
Conformity check
no
The cause is
still presentFault
solved
yes
Use fault finding charts
(ALPs)
no
The cause is
still presentFault
solved
yes
Contact the Techline with the
completed fault finding log

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Fault finding - Introduction

Vdiag No.: 44
62B
Visual inspection of the sealing:
(Only for watertight connectors)
●Check for the seal on the connection (between the 2 parts of the connection).
●Check the seal at the back of the connectors:
–For unit joints (1 for each wire), check that the unit joints are present on each electrical wire and that
they are correctly positioned in the opening (level with the housing). Check that plugs are present on
openings which are not used.
–For a grommet seal (one seal which covers the entire internal surface of the connector), check that the
seal is present.
–For gel seals, check for gel in all of the openings without removing the excess or any protruding
sections (it does not matter if there is gel on the contacts).
–For hotmelt sealing (heat-shrink sheath with glue), check that the sheath has contracted correctly on
the rear of the connectors and electrical wires, and that the hardened glue comes out of the side of the
wire.
●Check that there is no damage to any of the seals (cuts, burns, significant deformation, etc.).
If a fault is detected, repair or replace the wiring (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair)
5. FAULT FINDING LOG
You will always be asked for this log:
●when requesting technical assistance from Techline,
●for approval requests when replacing parts for which approval is mandatory,
●to be attached to monitored parts for which reimbursement is requested. The log is needed for warranty
reimbursement, and enables better analysis of the parts removed.
6. SAFETY INSTRUCTIONS
Safety rules must be observed during any work on a component to prevent any damage or injury:
–check the battery voltage to avoid incorrect operation of computer functions,
–do not smoke,
–use the proper tools. IMPORTANTIMPORTANT
Any fault on a complex system requires thorough fault finding with the appropriate tools. The
FAULT FINDING LOG, which should be completed during the procedure, enables you to keep
track of the procedure which is carried out. It is an essential document when consulting the
manufacturer.
IT IS THEREFORE MANDATORY TO FILL OUT A FAULT FINDING LOG EACH TIME FAULT FINDING IS
CARRIED OUT

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Fault finding - Configuration and programming
CLIMATE CONTROL COMPUTER CONFIGURATION
The climate control computer has three configuration functions. These configurations need to be set after replacing
the computer.
These three configurations are important as they ensure that climate control is optimised within the vehicle (better
control compared to automatic air conditioning). If these configurations are not entered correctly, cold air and warm
air production will be severely affected.
These configurations can be accessed in repair mode by the diagnostic tool and can only be entered using
the fault finding by computer menu as opposed to the fault finding by function menu.
These configurations can also be read using the diagnostic tool in repair mode to ensure they have been correctly
set. Configurations can be read in fault finding by computer mode and fault finding by function mode.
Configuration Option Configuration reading
CF044Vehicle type – New TwingoLC013Vehicle type
CF024Geographical zone– Zone 1
– Zone 2LC046Geographical zone
CF117Type of heating
resistors – None
– 900 WLC044Type of heating
resistors
WARNING
–The "ZONE 1" configuration must be selected for HOT AND HUMID COUNTRIES which correspond to the
technical and legislative criteria available on the Shared World Information.
–The "ZONE 2" configuration must be selected for TEMPERATE COUNTRIES which correspond to the
technical and legislative criteria available on the Shared World Information.
Note:
In hot and humid climates, when the heating and air conditioning system is in operation, condensation
may form on the outside of the windscreen.
The "ZONE 1" configuration corrects this customer complaint.
Note:
In fault finding by function mode, the diagnostic tool can also display the configuration readings of the other
computers involved in the air conditioning function. All of the air conditioning function configurations (of the
injection computer and UCH computer) are listed (See 62C, Air conditioning).

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Fault finding - Interpretation of faults

Vdiag No.: 44
62B
DF007
PRESENT
OR
STOREDINTERIOR TEMPERATURE SENSOR CIRCUIT
CC.0 : Short circuit to earth
CO.1 : Short circuit or open circuit to + 12 V
NOTESConditions for running fault finding on a present or stored fault:
Apply this fault finding procedure if the fault reappears as present or stored after the
ignition is switched on and air conditioning activation is requested with the engine
running.
Special notes:
The interior temperature sensor is located at the top of the roof in the unit under the
rear view mirror.
Use the Wiring Diagram Technical Note for the New Twingo.
Check the connection and condition (possible wiring damage) of the connector of component 1872.
If the connector is faulty (see Technical Note 6015A, Repairing electrical wiring, Wiring: Precautions for the
repair), repair the connector, otherwise replace the wiring.
With connector A of component 419 and connector of union R301 disconnected, check the insulation and
continuity of the following connections between components R301 (dashboard/interior lights intermediate union)
and 419.
●connection 38JN
●connection 38GZ
If the connection or connections are faulty (see Technical Note 6015A, Repairing electrical wiring, Wiring:
Precautions for repair), repair the wiring, otherwise replace it.
With the connector of component 1872 disconnected, check the insulation and continuity of the following
connections between components R301 (dashboard/interior lights intermediate union) and 1872.
●connection 38JN
●connection 38GZ
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 insulation of connections 38JN and 38GZ of component 1872.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Check the resistance of component 1872 between connections 38JN and 38GZ.
Replace the sensor if the resistance is not 10 kΩΩ Ω Ω
± 500 ΩΩ Ω Ω
at 25 ˚C. For more details, consult the electrical
specifications of the sensor according to the temperature (see Help).
If the fault is still present, contact the Techline.
AFTER REPAIRClear the stored faults.
Follow the instructions to confirm repair.
Deal with any other faults.
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Fault finding - Interpretation of faults

Vdiag No.: 44
62B
DF010
PRESENT
OR
STOREDMIXING MOTOR CIRCUIT
CO.0 : Open circuit or short circuit to earth
CC.1 : Short circuit to + 12 V
NOTESConditions for running fault finding on a present or stored fault:
The fault is declared present when the temperature control is activated (minimum or
maximum temperature request and air conditioning control panel on).
Special notes:
Wait 1 minute after repairing the fault so that the climate control computer can control
the mixer motor. To avoid having to wait for 1 minute, switch the ignition off and then
back on again.
There is no specific programming operation for the mixing motor, however, after it has
been replaced, the motor needs to program its limits (minimum and maximum).
Use the Wiring Diagram Technical Note for the New Twingo.
Check the connection and condition of the connector of component 420.
If the connector is faulty (see Technical Note 6015A, Repairing electrical wiring, Wiring: Precautions for the
repair), repair the connector, otherwise replace the wiring.
With connector B of component 419 disconnected, check the insulation and continuity of the following
connections between components 419 and 420:
●connection 38LC
●connection 38LD
●connection 38LG
●connection 38LH
If the connection or connections are faulty (see Technical Note 6015A, Repairing electrical wiring, Wiring:
Precautions for repair), repair the wiring, otherwise replace it.
Connector of component 1115 disconnected,
Check the insulation and continuity of connection S between components 419 and 420.
If the connection or connections are faulty (see Technical Note 6015A, Repairing electrical wiring, Wiring:
Precautions for repair), repair the wiring, otherwise replace it.
Connector of component 419 connected and ignition on,
●Check for 12 V supply on connection S of component 420 in relation to earth NAM.
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 the supply is not present and if no faulty connections are detected during the continuity checks, contact your
Techline.
AFTER REPAIRClear the stored faults.
Follow the instructions to confirm repair.
If the motor has been replaced (see Configuration and programming).
Deal with any other faults.
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Fault finding - Interpretation of faults

Vdiag No.: 44
62B
DF010
CONTINUED
With the connector disconnected, measure the resistance value of the mixing motor:
Check the resistance of component 420 between the following connections:
●connections S and 38LG,
●connections S and 38LC,
●connections S and 38LH,
●connections S and 38LD.
If the connection or connections are faulty (see Technical Note 6015A, Repairing electrical wiring, Wiring:
Precautions for repair), repair the wiring, otherwise replace it.
The results of the four checks should be 100 ΩΩ Ω Ω

±± ± ±

5 ΩΩ Ω Ω
at 20 ˚C, replace the mixing motor if this is not the case.
If the fault is still present, remove the mixing motor but leave it electrically connected and send a motor command
from the temperature buttons on the control panel: switch the temperature setting to maximum 27 ˚C (a value
of 100 %), then switch the temperature setting to minimum 15 ˚C (a value of 0 %), the motor must change from
one direction to the other. If the connections are correct but the motor does not switch during the commands:
replace the mixing motor.
AFTER REPAIRClear the stored faults.
Follow the instructions to confirm repair.
If the motor has been replaced (see Configuration and programming).
Deal with any other faults.