2009 RENAULT TWINGO air conditioning

87B-88
MR-413-X44-87B000$576.mif
V5
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
UCH
Vdiag No.: 44
87B
ET015
CONTINUED
Check the insulation, continuity and the absence of interference resistance on the following connections:
Manual air conditioning between the air conditioning control panel (component code 319) and the blower unit:
Connection code 38AH between components 319 and 164.
Connection code 38AJ between components 319 and 164.
Connection code 38AK between components 319 and 164.
Connection code 38AL between components 319 and 164.
Connection code 38DA between components 164 and 1156.
Connection code 38DB between components 164 and 1156.
Connection code SP3 between components 164 and 1016.
Between the air conditioning control panel (component code 319) and the UCH: Climate control:
Connection code 38LQ between components 319 and 645.
Connection code 15M between components 319 and 645.
Connection code 15A between components 319 and 645.
Connection code 38LQ between components 319 and 645.
Connection code 38ES between components 319 and 645.
Connection code SP2 between component 319 and earth.
Connection code LPD between component 319 and earth.
Connection code SP3 between components 164 and 1016.
Connection code SP3 between components 164 and 1428.
Connection code NAM between component 319 and earth.
Connection code MAN between component 319 and earth.
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.
If the fault is still present, contact Techline.
AFTER REPAIRRepeat the conformity check from the start.
Carry out fault finding on the system.

87B-91
MR-413-X44-87B000$576.mif
V5
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
UCH
Vdiag No.: 44
87B
ET028
HEATED REAR SCREEN BUTTON
NOTESNo faults should be present or stored.
Apply this status for vehicles fitted with manual air conditioning or heating.
SPECIFICATIONSPRESSED
RELEASED
Check the operation of the heated rear screen button indicator light using AC019 Heated rear screen indicator
light. Check the operation of the rear de-icer using AC060 Rear screen de-icer.
Check that fuses F29 (15A) and F42 (10 A) are sound and correctly fitted in the passenger compartment fuse and
relay box (component code 260).
Replace the fuse(s) if necessary.
Check the air conditioning control panel black 9-track connector, (component code 319) (bent, oxidised or
broken tabs).
If the connector is faulty and there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the wiring, otherwise replace the wiring.
Check the continuity of the earth NAM connection between component NAM and the 9-track black connector of
the manual air conditioning control panel (component code 319).
Check for + 12 V on connection LPD of the manual air conditioning control panel black 9-track connector
(component code 319).
Check for + 12 V accessories feed on connection SP2 of the manual air conditioning control panel black 9-track
connector.
Check the PE1 40-track connector of the UCH, component code 645 (tabs bent, oxidised, broken).
AFTER REPAIRRepeat the conformity check from the start.
Carry out fault finding on the system.
UCH_V44_ET028

87B-93
MR-413-X44-87B000$576.mif
V5
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
UCH
Vdiag No.: 44
87B
ET029
AIR CONDITIONING BUTTON
NOTESNo faults should be present or stored.
Apply this status for vehicles with manual climate control or heating.
SPECIFICATIONSPRESSED
RELEASED
Check the configuration of the heating and air conditioning type of the vehicle:
–Check that LC013 "Air conditioning type" is "Heating" or "Manual" or "Automatic" according to the
equipment level. Otherwise carry out CF019 Air conditioning type.
Check the operation of the air conditioning button indicator light AC015 “Air conditioning button indicator
light”.
Check that fuses F29 (15A) and F42 (10 A) are sound and correctly fitted in the passenger compartment fuse and
relay box (component code 1016).
Replace the fuse(s) if necessary.
Check the air conditioning control panel black 9-track connector, (component code 319) (bent, oxidised or
broken tabs).
Check that the earth on connection NAM of the manual air conditioning control panel black 9-track connector is
in perfect condition.
Check for + 12 V accessories feed on connections LPD and SP2 of the manual air conditioning control panel
black 9-track connector.
Check the PE2 40-track connector of the UCH, component code 645 (tabs bent, oxidised, broken).
If the connector is faulty and there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the wiring, otherwise replace the wiring.
AFTER REPAIRRepeat the conformity check from the start.
Carry out fault finding on the system.
UCH_V44_ET029

87B-94
MR-413-X44-87B000$576.mif
V5
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
UCH
Vdiag No.: 44
87B
ET029
CONTINUED
Check the insulation, continuity and the absence of interference resistance on the following connections:
●Connection code 38ES between components 319 and 645.
●Connection code 38LP between components 319 and 645.
●Connection code LPD and SP2 between components 319 and 1016.
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.
If the fault is still present, replace the air conditioning button. (See MR 411 mechanical systems 62C, Manual air
conditioning, Control panel: Removal - Refitting).
If the fault is still present, contact the Techline.
AFTER REPAIRRepeat the conformity check from the start.
Carry out fault finding on the system.

87B-95
MR-413-X44-87B000$576.mif
V5
UCH
Vdiag No.: 44PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses87B
ET030
AIR CONDITIONING REQUEST 2
NOTESNo faults should be present or stored.
Apply the checks if:
–the status remains PRESENT when a climate control request had been made, with
the engine running.
SPECIFICATIONSABSENT
PRESENT
This is the request for air conditioning sent by the UCH to the engine management computer.
This request may reach the UCH in two ways:
–In the case of a vehicle fitted with manual air conditioning, by pressing on the air conditioning button.
–In the case of a vehicle fitted with climate control, by request from the user or the climate control computer in
automatic mode.
MANUAL AIR
CONDITIONING
Check that status ET142 Engine operating phase is RUNNING; otherwise, carry out
fault finding on the injection.
Check that status ET029 Air conditioning button is PRESSED (button indicator light
lit), otherwise perform fault finding on this status.
Check that status ET015 Passenger compartment blower is RUNNING; otherwise,
carry out fault finding on this status.
If the fault is still present, contact Techline.
If ET030 Air conditioning request 2 is Absent, check that there are no faults in the
UCH and injection system (see 13B, Diesel injection) or (see 17B, Petrol injection).
CLIMATE
CONTROLCarry out fault finding on the climate control computer (see 62B, regulated climate
control).
If the fault is still present, contact Techline.
AFTER REPAIRRepeat the conformity check from the start.
Carry out fault finding on the system.
UCH_V44_ET030

87B -145
MR-413-X44-87B000$720.mif
V5
87B
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of parameters
PR002
EXTERNAL TEMPERATURE
NOTESOnly apply the checks if the parameter is inconsistent.
Special notes:
Check that LC002 "External temperature sensor" is "WITH". Otherwise perform
CF029 "External temperature sensor".
Check that LC067 "External temperature display" is "WITH". Otherwise perform
CF171 "External temperature display".
Note:
If the exterior temperature sensor (component code 245) is disconnected or the vehicle is not equipped with an
exterior temperature sensor, the temperature displayed is the default temperature of 215 ˚C.
Check the 12-track temperature sensor connector, (component code 245) (tabs bent, oxidised, broken, etc.).
Check the PE2 40-track connector of the UCH, component code 645 (tabs bent, oxidised, broken).
If the connector is faulty and there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the wiring, otherwise replace the wiring.
Check the insulation, continuity and the absence of interference resistance on the following connections:
●Connection code 47D between components 240 (for left-hand drive vehicles) or 239 (for right-hand drive
vehicles) and 645.
●Connection code 47C between components 240 (for left-hand drive vehicles) or 239 (for right-hand drive
vehicles) and 645.
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.
Measure the resistance of the connector sensor disconnected from connections 47C and 47D.
Temperature (˚C)
1
5
10
15
20
25
30
35Sensor resistance (Ω) ± 50 Ω
5980
5020
4280
3530
2900
2300
2010
1620
Replace the exterior temperature sensor (component code 245) if not correct. (See MR 411 mechanical
systems 62A, air conditioning, Exterior air temperature sensor: Removal - Refitting).
If the fault is still present, contact Techline.
UCH_V44_PR002
MR-413-X44-87B000$720.mif
UCH
Vdiag No.: 44

87B -160
MR-413-X44-87B000$816.mif
V5
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of commands
UCH
Vdiag No.: 44
87B
AC060
HEATED REAR SCREEN
NOTESNo faults should be present or stored.
Check that the interpretation of ET028 “Heated rear screen button” has been
applied.
Check that fuses F29 (15A) and F42 (10 A) are sound and correctly fitted in the passenger compartment fuse and
relay box (component code 1016).
Replace the fuse(s) if necessary.
Check the air conditioning control panel black 9-track connector, (component code 319) (bent, oxidised or
broken tabs).
If the connector is faulty and there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the wiring, otherwise replace the wiring.
Check for the earth on connection MYH of the connector of component 200.
Run command AC060 “Rear screen de-icer” and check for + 12 V on connection 15LP of the connector of
component 200.
If the connection is 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 insulation, continuity and absence of interference resistance of the following connections:
●Connection code 15LP between components 645 and 200.
●Connection code MYH between earth MYH and component 200.
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.
If the supplies, earth and connections are correct, replace the heated rear screen (component code 200).
If the fault is still present, contact Techline.
AFTER REPAIRCarry out another fault finding check on the system.
UCH_V44_AC060