fuse chart RENAULT TWINGO RS 2009 2.G Heating And Air Conditioning - Manual Air Conditioning Workshop Manual

62C-42
MR-413-X44-62C000$819_eng.mif
V1
MANUAL AIR CONDITIONING
Fault finding - Fault finding charts62C
ALP 5 No passenger compartment ventilation
NOTESCheck that fuse F28 (30A) is in good condition.
Check that the air circuit (cabin filter, scuttle panel grille, air ducts etc.) is not blocked.
Is the air circuit in good condition?
YES
Check the condition of the passenger compartment blower blades.
Are the passenger compartment blower blades in good condition?
YES
Check that the air recirculation flap does not remain
closed when in the recirculation position.
Repair if necessary.
Is the fault still present when the air distribution is
changed?
NO
NO
If necessary, repair, clean or replace the
cabin filter (see MR 411 Mechanical, 61A,
Heating, Cabin filter: Removal -
Refitting).
NO
If necessary, repair, clean or replace the
passenger compartment blower blades
(see MR 411 Mechanical, 61A, Heating,
Fan assembly: Removal - Refitting).
YESEnsure that all the air vents are open.
If the fault is still present (see ALP2 Air
distribution fault).
AFTER REPAIRCarry out a complete check with the diagnostic tool.

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ALP 5
CONTINUED 1
Using a multimeter in the voltmeter position, check for + 12 V on connection SP3 of component 164 and earth
MAN of component 319.
Are the checks correct?
YES NO
Is the vehicle fitted with electric windows?
YES NO
Carry out a continuity test on
connection SP3 between components
164 and 1428.Carry out a continuity test on connection SP3
between components 164 and fuse F28 (30A) of
component 1016.
YES NO NO YES
D
Repair the wiring. If there is a repair procedure
(see Technical Note 6015A, Repairing
electrical wiring, Wiring: Precautions for
repair), repair the wiring, otherwise replace it.Check fuse
F28 (30A) of
component 1016.
Make sure that the control panel speed selection button works properly.
Position the speed selection button on speed 1 and carry out a continuity check between connection MAN and
connection 38AH of component 319.
Position the speed selection button on speed 2 and carry out a continuity check between connection MAN and
connection 38AJ of component 319.
Position the speed selection button on speed 3 and carry out a continuity check between connection MAN and
connection 38AK of component 319.
Position the speed selection button on speed 4 and carry out a continuity check between connection MAN and
connection 38AL of component 319.
Are the checks correct?
YES NO
Replace the air conditioning control panel.
AFTER REPAIRCarry out a complete check with the diagnostic tool.

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ALP 5
CONTINUED 4
Using a test light, check for + 12 V between connection SP2 and earth MAM.
Is the test light lit?
YES NO
Using a test light, check for + 12 V between
connection BP1 of component 1428 and a chassis
earth.Using a test light, check for + 12 V between
connnection SP2 and a chassis earth.
Is the test light lit? Is the test light lit?
YES NO YES NO
Activate speed 1 and,
using a test light, check for
+ 12 V between
connection SP3 of
component 1156 and a
chassis earth.Carry out a continuity
test on connection
BP1 between
component 1428 and
fuse
F24 (30A) of
component 1016.Fault on connection MAM.
Repair the wiring. If there is a
repair procedure (see Technical
Note 6015A, Repairing
electrical wiring, Wiring:
Precautions for repair), repair
the wiring, otherwise replace it.Carry out a
continuity test
on connection
SP2 between
component
1428 and fuse
F29-15A of
component
1016 Is the test light lit? Is the continuity
correct?
YES NO YES NO
Replace the
fan assembly.Replace the
fan assembly
relay.Fault on connection MAM.
Repair the wiring. If there is
a repair procedure (see
Technical Note 6015A,
Repairing electrical
wiring, Wiring:
Precautions for repair),
repair the wiring, otherwise
replace it.
D
Is the continuity correct?
YES NO
AFTER REPAIRCarry out a complete check with the diagnostic tool.

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MANUAL AIR CONDITIONING
Fault finding - Fault finding charts62C
ALP 5
CONTINUED 5
Check fuse F24-30A of
component 1016.Check fuse F29-15A of
component 1016.Fault on connection SP2. Repair
the wiring. If there is a repair
procedure (see Technical Note
6015A, Repairing electrical
wiring, Wiring: Precautions
for repair), repair the wiring,
otherwise replace it.
AFTER REPAIRCarry out a complete check with the diagnostic tool.

62C-48
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V1
MANUAL AIR CONDITIONING
Fault finding - Fault finding charts62C
Preliminary cold loop efficiency test
ALP 8 No cold air
NOTESConsult this customer complaint after a full check with the diagnostic tool
(fault reading and configuration checks).
Check that the engine speed is greater than 750 rpm and that the exterior
temperature is above 3 ˚C.
Check that the fuses are sound.
Use a multimeter and a 21 W test light.
Use the Wiring Diagram Technical Note, New Twingo.
With engine running, air conditioning in maximum
cold position and maximum ventilation speed. After
10 minutes, is the high pressure pipe at the
compressor outlet hot, and the low pressure pipe at
the evaporator outlet cold and iced up?
NO
Check the cleanliness of the condenser. Touch the
pipes: are they warmer at the inlet than the outlet?
YES
Is the dehydrator reservoir pipe hot at the inlet and
outlet?
YES
Is the expansion valve pipe hot at the inlet and
outlet?
NO
Is the evaporator pipe hot at the inlet and outlet?
NO
1
YES2
NOReplace the condenser (see MR 411
Mechanical, 62A, Air conditioning,
Condenser: Removal - Refitting).
NOReplace the dehydrator reservoir (see MR
411 Mechanical, 62A, Air conditioning,
Dehydrator reservoir: Removal -
Refitting).
YESReplace the expansion valve (see MR 411
Mechanical, 62A, Air conditioning,
Expansion valve: Removal - Refitting).
YESReplace the evaporator (see MR 411
Mechanical, 62A, Air conditioning,
Evaporator: Removal - Refitting).
AFTER REPAIRCarry out a complete check with the diagnostic tool.

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MANUAL AIR CONDITIONING
Fault finding - Fault finding charts62C
ALP 8
CONTINUED 4
Check the continuity of connection 49L between components 321 and 700.
Is the continuity correct?
NO YES
Continuity fault on connection 49L. If there is a repair
procedure (see Technical Note 6015A, Repairing
electrical wiring, Wiring: Precautions for repair),
repair the wiring, otherwise replace it.Check that the low speed fan assembly relay operates
correctly (component 700). Replace it if it is faulty (see
MR 411 Mechanical, 81C, Fuses, Fuses: List and
location of components).
D
AFTER REPAIRCarry out a complete check with the diagnostic tool.

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V1
62C
MANUAL AIR CONDITIONING
Fault finding - Fault finding charts
ALP 9 Too much cold air
NOTESConsult this customer complaint after a full check with the diagnostic tool (fault reading and
configuration checks).
Check that the fuses are sound.
Use a multimeter and a 21 W test light.
Use the Wiring Diagram Technical Note, New Twingo.
With the engine at idle speed and the heating and air conditioning off (AC button not pressed), check that the air conditioning
compressor clutch is not engaged.
Is the air conditioning compressor clutch engaged? NO
YES
With the engine stopped, check that the compressor clutch electric control operates correctly, using the diagnostic tool to run
command AC180 Air conditioning compressor relay (injection command mode menu).
–During the command, connection 38R of component 171 must be supplied with + 12 V.
–After the command, connection 38R of component 171 must no longer be supplied with + 12 V.
Is the connection still supplied with + 12 V after the command?
YES NO
Check the continuity and insulation from + 12 V of
connection 38R between components 171 and 584.Check that the air conditioning compressor clutch is not
jammed (mechanical fault).
Is the connection OK? Is the clutch still engaged?
NO YES YES
If there is a repair procedure (see
Technical Note 6015A, Repairing
electrical wiring, W iring:
Precautions for repair), repair the
wiring, otherwise replace it.With the vehicle ignition of f, check that
the compressor clutch relay is not
“jammed”, by checking the continuity
between connection 38R and
connection AP3 of component 584.
Is the continuity present?
NO

Apply the fault finding procedure for command
AC180 Air conditioning compressor relay
(see 13B Diesel injection or 17B Petrol
injection).
Is the fault still present?
Replace the air conditioning
compressor (see MR 411,
Mechanical, 62A, Air conditioning,
Compressor: Removal - Refitting).
YESReplace the air
conditioning
compressor clutch
relay.
AFTER REPAIRCarry out a complete check with the diagnostic tool.
MR-413-X44-62C000$910_eng.mif

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MANUAL AIR CONDITIONING
Fault finding - Fault finding charts62C
ALP 10 Inefficient rear screen de-icing/demisting
NOTESCarry out this conformity check after a full check using the diagnostic tool (fault
reading, especially UCH and injection faults and configuration checks).
Check that the fuses are sound.
Use a multimeter and a 21 W test light.
Use the Wiring Diagram Technical Note, New Twingo.
Special notes:
Check that the inside of the windows are not greasy as this reduces the efficiency of
the de-icing.
Note:
The de-icing control is only authorised when the engine is running to save
power. The rear screen de-icer is controlled by pressing the rear screen de-icer
button (with time delay and rear-view mirror de-icer if fitted).
Ensure that there are no water leaks in the passenger compartment which would significantly increase the
moisture and reduce the effectiveness of the demisting function (see ALP 12 if the fault is noted).
Is the fault still present?
YES NO
Check that the UCH receives the signal about the
status and operation of the engine. In the Cold Loop
screen, status ET142 Engine operating phase
should display RUNNING.
Is status ET142 RUNNING?
YES
End of fault finding procedure.
NOCarry out fault finding on the UCH
(interpretation of status ET142) and on the
multiplex network.
AFTER REPAIRCarry out a complete check with the diagnostic tool.

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MR-413-X44-62C000$910_eng.mif
V1
MANUAL AIR CONDITIONING
Fault finding - Fault finding charts62C
ALP 13 No lighting on the control panel in night mode
NOTESCheck fuse F42-10A of component 1016.
Using a test light, check for + 12 V between connection LPD and connection NAM of component 319.
Does the test bulb illuminate?
YES NO
Check the condition of the air conditioning control
panel bulbs.Carry out a continuity test on connection LPD
between component 319 and F42-10A of component
1016.
Are the bulbs sound? Is the test correct?
YES NO YES NO
Replace the air
conditioning control
panel.Replace the air
conditioning control
panel bulb(s).Using the test light,
check for + 12 V
between connection
LPD of component 319
and the chassis earth.Fault on connection LPD
between F42-10A of
components 1016 and
319. Repair the wiring. If
there is a repair
procedure (see
Technical Note 6015A,
Repairing electrical
wiring, Wiring:
Precautions for repair),
repair the wiring,
otherwise replace it.
Is the test correct?
NO YES
Replace the air conditioning control panelFault on connection NAM. Repair the wiring. If there is
a repair procedure (see Technical Note 6015A,
Repairing electrical wiring, W iring: Precautions
for repair), repair the wiring, otherwise replace it.
AFTER REPAIRCarry out a complete check with the diagnostic tool.