check engine RENAULT TWINGO 2009 2.G Heating And Air Conditioning - Heating User Guide

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HEATING
Fault finding - Fault finding charts61A
ALP 6
CONTINUED 6
Note:
Fault finding procedure without using a current clamp.
Disconnect the passenger compartment heating resistor connector (component 1113) and connect a test light
between each of the connections 38LM and MAK and run command AC251 Heating resistor relay 2.
Does the test light illuminate?
YES NO
Replace the passenger
compartment heating resistor unit if,
at ambient temperature, the
resistance value between each of
connections 38LM and MAK of
component 1113, is not between:
0.55 and 0.75 Ω
(see MR 411, Mechanical, 61A,
Heating, Heating resistors:
Removal - Refitting).
The passenger compartment
heating resistors are correct, if the
fault is still present carry out a
conformity check on the injection,
heating sub-function (see 13B,
Diesel injection, Conformity
check).
Check the continuity of the 2 connections 38LM between
components 1113 and 1068.
Is the continuity correct?
YES NO
Continuity fault on connection
38LM. If there is a repair method
(see Technical Note 6015A,
Repairing electrical wiring,
Wiring: Precautions for repair),
repair or replace the wiring.
Check for + 12 V supply on connections 3FB and BP9 of
component 1068.
Are the supplies correct?
YES NO
Check the engine fuse
and relay box (see 16A,
Starting Charging).Carry out fault finding on the injection computer for heating resistor
relay 2 control (see 13B, Diesel injection, Conformity check).
C

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Fault finding - Fault finding charts61A
ALP 6
CONTINUED 7
Note:
Fault finding procedure without using a current clamp.
Check for + 12 V between the chassis earth and
connections 3FB and BP9 of component 1067.
Is there + 12 V?
YES
Run fault finding on the injection computer for
the heating element resistor 1 command
(see 13B, Diesel injection, Conformity check).
NOCheck the engine fuse and relay box
(see 16A, Starting - Charging)
D

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Fault finding - Fault finding charts61A
ALP 7 Too much hot air
NOTESCarry out this conformity check after a full check using 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 Diagrams Technical Note, NEW TWINGO.
Is the air flow correct?
YES
Is the air distribution correct?
YES
Using the diagnostic tool statuses and
parameters screen (cold loop sub-function),
check that the temperature signals are
consistent (no sensor drift resulting in incorrect
measurement).
For manual air conditioning systems:
–Use parameters PR002 Exterior temperature
(depending on version) and PR024 Engine
coolant temperature.
For climate control systems:
–Use parameters PR002 Exterior
temperature, PR004 Coolant temperature
and PR001 Interior temperature.
Are the temperature signals consistent?
YES
NOSee ALP3, Air flow fault
NOSee ALP2, Air distribution fault.
NOCarry out a conformity check:
–For the coolant temperature sensor,
see 13B, Diesel injection, Fault
summary table or 17B Petrol injection,
Fault summary table.
–For the exterior temperature sensor,
see 87B, Passenger compartment
connection unit, Fault summary table.
–For the interior temperature sensor,
see 62B, Climate control, Fault summary
table.
Replace any faulty components.
A

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Fault finding - Fault finding charts61A
ALP 7
CONTINUED 1
With the engine warm and passenger
compartment ventilation operating, vary
the position of the mixing flap from the
maximum cold position to the maximum
hot position and check subjectively that
there is a difference in temperature.
Is a difference in temperature noted?
YES
NO
For climate control systems:
Carry out a conformity check on the mixing motor (PR012 Mixing flap
position). If the conformity check does not reveal any faults, look for a
mechanical fault on the mixing flap (condition of the motor’s notched
sector, flap jammed inside the unit, etc.).
For manual air conditioning and heater versions:
Check the condition and routing of the mixing flap control cable.
Eliminate any constraints on it: kinks, cable restricted by plastic clips,
etc.
Replace the lead if necessary. Unclip the cable from the side of the
heating/air conditioning unit and check the stiffness of movement of each
component: control button and flap control on the air distribution unit.
Check that there is no mechanical fault with the mixing flap (flap jammed
inside the unit, etc.).
Carry out any necessary repairs.
YES
For climate control systems:
Using the diagnostic tool statuses and parameters screen (passenger
compartment ventilation sub-function), check that the recirculation flap is
in the exterior air position. Status ET062 Recirculation flap position
should display OPEN. If it is closed when the user does not request
recirculation, apply the fault finding procedure for fault: DF021
Recirculation motor circuit.
For manual air conditioning systems:
Check that the recirculation flap is in the external air position. If this is
not operating correctly (impossible to change the flap to the exterior air
position), check the condition and routing of the recirculation flap control
cable. Eliminate any constraints it may have such as kinks, restriction by
plastic clips, etc. Replace it if necessary.
Check that there is no mechanical fault on the recirculation flap (flap
jammed). Carry out any necessary repairs.
Is the fault still present?
NO
End of fault finding
procedure.
Check the coolant circuit:
Check the level of the coolant circuit (too
low a level may unprime the circuit when
driving at low loads and when idling).
Check that the thermostatic valve closes
at the correct temperature, and replace
the valve if necessary (see MR 411,
Mechanical, 19A, Cooling, Thermostat:
Removal - Refitting).
Is the fault still present?
NO
A
B

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Fault finding - Fault finding charts61A
ALP 7
CONTINUED 2
For diesel vehicles fitted with
passenger compartment heating
resistors, check that they do not
operate when the engine is hot
(temperature > 50 ˚C).
Disconnect the Passenger
compartment heating resistors
connector (component 1113) and
connect a test light between
connections 38LL and MAK.
Does the test light illuminate?
NO
Disconnect the Passenger
compartment heating resistors
connector (component 1113) and
connector a test light between each
of the connections 38LM
and MAK.
Does the test light illuminate?
NO
End of fault finding procedure.
Check the continuity and insulation to + 12 V of connection
38LL between components 1113 and 1067.
Is the connection OK?
YES NO
YESRun fault finding on the
injection computer for the
heating element resistor 1
command (see 13B, Diesel
injection, Conformity
check, Heating sub-
function ).
If the control is correct,
replace the relay
(component 1067).Fault on connection
38LL, if there is a repair
procedure, repair the
wiring (see Technical
Note 6015A, Repairing
electrical wiring,
Wiring: Precautions for
repair), otherwise
replace the wiring.
Check the continuity and insulation to + 12 V of the
2 connections 38LM between components 1113 and 1068.
YES Is the connection OK?
YES NO
Run fault finding on the
injection computer for the
heating element resistor 2
command (see 13B, Diesel
injection, Conformity
check, Heating sub-
function).
If the control is correct,
replace the relay
(component 1068).Fault on connection
38LM, if there is a repair
procedure, repair the
wiring (see Technical
Note 6015A, Repairing
electrical wiring,
Wiring: Precautions
for repair), otherwise
replace the wiring.
B