air condition RENAULT TWINGO RS 2009 2.G Electrical Equipment - Lightening Workshop Manual

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Fault finding - Introduction80D
Faults
Faults are declared as either present or stored (depending on whether they appeared in a certain context and have
disappeared since, or whether they remain present but have not been diagnosed within the current context).
The present or stored status of faults should be taken into consideration when the diagnostic tool is switched on
after the + after ignition feed (without any system components being active).
For a present fault, apply the procedure described in the Interpretation of faults section.
For a stored fault, note the faults displayed and apply the instructions in the Notes section.
If the fault is confirmed when the instructions in the Notes section are applied, the fault is present. Deal with the fault
If the fault is not confirmed, check:
–the electrical lines which correspond to the fault,
–the connectors on these lines (corrosion, bent pins, etc.),
–the resistance of the component detected as faulty,
–the condition of the wires (melted or split insulation, wear).
Conformity check
The aim of the conformity check is to check data that does not produce a fault on the diagnostic tool because the
data is inconsistent. Therefore, this stage is used to:
–run diagnostics on faults that do not have a fault display, and which may correspond to a customer
complaint.
–check that the system is operating correctly and that there is no risk of a fault recurring after repairs.
This section gives the fault finding procedures for statuses and parameters and the conditions for checking them.
If a status is not behaving normally or a parameter is outside the permitted tolerance values, consult the
corresponding fault finding page.
Customer complaints - Fault finding chart
If the test with the diagnostic tool is OK but the customer complaint is still present, the fault should be processed by
customer complaint.
A summary of the overall procedure to follow is provided on the following page in the
form of a flow chart.

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LIGHTING
Fault finding - Function
Layout of the lighting function
The lighting function is provided by the computer: UCH. This computer is connected via a wire connection.
The UCH interprets the driver's requests via the steering column switch and from the rain/light sensor, and then
sends lighting function requests.
These requests are controlled by the UCH.
The UCH also controls the interior lights (courtesy lights, air conditioning operating light, central door locking
operating light).
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Fault finding - Function80D
The LIGHTING function is divided into two sub-functions: Lighting command, Lighting power.
If the vehicle is equipped with a light detector, this function is controlled by the UCH.
Otherwise this function is controlled directly with no intervention from the UCH.
1. Lighting control
Operated by the driver
The UCH receives the driver's request via the steering column switches and the hazard warning lights button.
The UCH controls the supply to the side lights, dipped headlights, main beam headlights and front fog lights.
The dipped headlights are still supplied when the main beam headlights are activated.
Automatic headlighting: the automatic lighting function is activated by switching the side lights on and off twice in
succession: a beep will sound to confirm this.
Check the statuses of the following commands:
Operated by the light sensor
The rain and light sensor is a single and unique sensor fitted in the windscreen. It is linked by a single connection to
the UCH.
The light sensor enables automatic operation of the side lights and dipped headlights as soon as the vehicle is in a
dark place (tunnel, night, gloomy weather conditions, etc.).
View the sensor status using status ET115 Request to switch on lights by light sensor.
The sensor configuration can be viewed by reading configuration LC044 Rain/light sensor and can be altered using
command CF035 Rain/light sensor.
The automatic lighting function is configured using CF193 "Automatic lighting function" and can be viewed using
LC095 "Automatic lighting function". Configuration CF194 "Automatic wiper function" is also connected to the
automatic lighting function and this function can be viewed using LC096 "Automatic wiper function".
2. Lighting output
The UCH controls the interior lighting supply (courtesy lights, footwell lights, etc.), the air conditioning and central
locking indicator lights.
The UCH controls the supply to the rear lights, front lights and the indicators.
The operation of the lights supplied by the UCH can be checked using actuator commands AC009 "Rear fog
lights", AC022 "Left-hand indicator", AC023 "Right-hand indicator", AC063 "Gradual lighting and dimming
of the courtesy light", AC062 "Main beam headlights", AC054 "Dipped headlights", AC055 "Side lights" and
AC008 "Front fog lights". ET081 Lighting stalk position
ET085 Hazard warning lights button
ET111 Front fog lights request
ET082 Rear fog lights request
ET083 Left hand indicator request
ET084 Right hand indicator request
ET463 Door(s) or tailgate

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Fault finding - Fault Finding Chart
If the vehicle lighting is controlled by the UCH (with rain/light sensor):
If the switch is not a one-touch control:
If the vehicle lighting is not controlled by the UCH (no rain/light sensor):
ALP 2 No rear fog light
NOTESOnly refer to the customer complaints after performing a complete check using the
diagnostic tool.
If the horn and lights switch is a one-touch control:
Check the operation of status ET082 Rear fog lights request and command AC009
Rear fog light in the UCH. If there is a malfunction on status ET082 "Rear fog lights
request" and command AC009 "Rear fog lights", refer to the interpretation of status
ET082 "Rear fog lights request", of command AC009 "Rear fog lights" and of fault
DF109 "Rear fog lights control circuit".
Check the condition of the bulb and cleanliness of its
contacts.
Are the bulb and its contacts in good condition?
YES
Replace the light concerned.
Check that fuses F13 (10 A) and F39 (10 A) are sound and correctly fitted in the passenger compartment fuse
and relay box.
Replace the fuse if necessary.
Check the condition and connection of the light connector concerned (bent, oxidised, broken tabs).
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 condition and connection of the horn and lights switch connector (tabs broken, bent, oxidised).
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 for + 12 V (when there is a rear fog lights request) on connection 9P of components 172 and 173. Check
for an earth on connection MF of component 172 and connection MG on component 173.
NOClean the contacts and replace any bulb in
poor condition.
AFTER REPAIRCarry out a complete check with the diagnostic tool.
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Fault finding - Fault Finding Chart80D
ALP 3 NO RIGHT hand DIRECTION INDICATOR
NOTESOnly refer to the customer complaints after performing a complete check using the
diagnostic tool.
Check the operation of status ET084 Right hand direction indicator request and
command AC023 Right hand direction indicator in the UCH. If there is a
malfunction on status ET084 "Right-hand indicator request" and command AC023
"Right-hand indicator", refer to the interpretation of status ET084 "Right-hand
indicator request" and of command AC023 "Right-hand indicator".
Check the condition of the bulbs and the cleanliness
of their contacts.
Are the bulbs and the contacts on the board
in good condition?
YES
Apply the fault procedure for DF012 Right-hand
direction indicator circuit (see 87B, Passenger
compartment connection unit, interpretation of
faults).
NOClean the contacts and replace any bulbs in
poor condition.
AFTER REPAIRCarry out a complete check with the diagnostic tool.
UCH_V44_ALP3

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Fault finding - Fault Finding Chart80D
ALP 4 No left hand direction indicator
NOTESOnly refer to the customer complaints after performing a complete check using the
diagnostic tool.
Check, as a priority, the operation of status ET083 Left hand direction indicator and
command AC022 Left hand direction indicator in the UCH. If there is a malfunction
on status ET085 "Left-hand indicator request" and command AC022 "Left-hand
indicator", refer to the interpretation of status ET085 "Left-hand indicator request"
and of command AC022 "Left-hand indicator".
Check the condition of the bulbs and the cleanliness
of their contacts.
Are the bulbs and the contacts on the board
in good condition?
YES
Apply the procedure for processing fault DF013 Left-
hand direction indicator circuit (see 87B,
Passenger compartment connection unit,
interpretation of faults).
NOClean the contacts and replace any bulbs in
poor condition.
AFTER REPAIRCarry out a complete check with the diagnostic tool.
UCH_V44_ALP4

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Fault finding - Fault Finding Chart80D
If the vehicle lighting is controlled by the UCH (with rain/light sensor):
If the vehicle lighting is not controlled by the UCH (no rain/light sensor):
ALP 5 No side lights
NOTESOnly check this customer complaint after performing a complete check with the
diagnostic tool.
Check, as a priority, the operation of status ET081 Lighting stalk position and
command AC055 Side lights in the UCH. If there is a malfunction on status ET081
"Lighting stalk position" and command AC055 "Side lights", refer to the
interpretation of status ET081 "Lighting stalk position" and of command AC055
"Side lights".
Carry out a multiplex network test. If the multiplex
network contains faults (see 88B, Multiplexing).
Check the condition of the bulbs and the cleanliness
of their contacts.
Are the bulbs and their contacts in good
condition?
YES
Replace the light concerned.
Check that fuses F13 (30 A), F42 (10 A) and F43 (10 A) are sound and correctly fitted in the passenger
compartment fuse and relay box.
Replace the fuse if necessary.
Check the condition and connection of the light connector concerned (bent, oxidised, broken tabs).
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 condition and connection of the horn and lights switch connector (tabs broken, bent, oxidised).
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.
NOClean the contacts and replace any bulbs in
poor condition.
AFTER REPAIRCarry out a complete check with the diagnostic tool.
UCH_V44_ALP5

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Fault finding - Fault Finding Chart80D
If the vehicle lighting is controlled by the UCH (with rain/light sensor):
If the vehicle lighting is not controlled by the UCH (no rain/light sensor):
ALP 6 No dipped headlights
NOTESOnly check this customer complaint after performing a complete check with the
diagnostic tool.
Check, as a priority, the operation of status ET081 Lighting stalk position and
command AC054 Dipped headlights in the UCH. If there is a malfunction on status
ET081 "Lighting stalk position" and command AC054 "Dipped headlights", refer
to the interpretation of status ET081 "Lighting stalk position" and of command
AC054 "Dipped headlights".
Carry out a multiplex network test. If the multiplex
network contains faults (see 88B, Multiplexing).
Check the condition of the bulbs and the cleanliness
of their contacts.
Are the bulbs and their contacts in good
condition?
YES
Replace the light concerned.
Check that fuses F13 (30 A), F34 (15 A) and F35 (15 A) are sound and correctly fitted in the passenger
compartment fuse and relay box.
Replace the fuse if necessary.
Check the condition and connection of the light connector concerned (bent, oxidised, broken tabs).
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.
NOClean the contacts and replace any bulbs in
poor condition.
AFTER REPAIRCarry out a complete check with the diagnostic tool.
UCH_V44_ALP6

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Fault finding - Fault Finding Chart80D
ALP 6
CONTINUED 1
Check the condition and connection of the horn and lights switch connector (tabs broken, bent, oxidised).
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 for + 12 V (when there is a dipped headlights request) on connection CPD of component 226 and
connection CPG on the connection of component 227. Check for an earth on connection MAR of component 226
and on connection MAS on component 227. Check the supply to connection LPD on component 172 and the
supply to connection LPG on component 173.
Dipped headlights check:
Check the insulation, continuity and the absence of interference resistance on the following connections:
Right-hand front dipped headlight:
●Connection code CPD between components 226 and 1016.
●Connection code MAR between components 226 and earth MAR.
Left-hand front dipped headlight:
●Connection code CPG between components 227 and 1016.
●Connection code MAS between components 227 and earth MAS.
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 for + 12 V on connections BP59 and BP11 of component 209. Check for earth on the connection. Check
for earth on connection MAN (for right-hand drive vehicles) or MAM (for left-hand drive vehicles) of
component 209.
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.
AFTER REPAIRCarry out a complete check with the diagnostic tool.

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Fault finding - Fault Finding Chart80D
If the vehicle lighting is controlled by the UCH (with rain/light sensor):
If the vehicle lighting is not controlled by the UCH (no rain/light sensor):
ALP 7 No main beam headlights
NOTESOnly check this customer complaint after performing a complete check with the
diagnostic tool.
Check, as a priority, the operation of status ET081 Lighting stalk position and
command AC062 Main beam headlights in the UCH. If there is a malfunction on
status ET081 "Lighting stalk position" and command AC062 "Main beam
headlights", refer to the interpretation of status ET081 "Lighting stalk position"
and of command AC062 "Main beam headlights".
Carry out a multiplex network test. If the multiplex
network contains faults (see 88B, Multiplexing).
Check the condition of the bulbs and the cleanliness
of their contacts.
Are the bulbs and their contacts in good
condition?
YES
Replace the light concerned.
Check that fuses F13 (30 A), F32 (10 A) and F33 (10 A) are sound and correctly fitted in the passenger
compartment fuse and relay box.
Replace the fuse if necessary.
Check the condition and connection of the light connector concerned (bent, oxidised, broken tabs).
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 condition and connection of the horn and lights switch connector (tabs broken, bent, oxidised).
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.
NOClean the contacts and replace any bulbs in
poor condition.
AFTER REPAIRCarry out a complete check with the diagnostic tool.
UCH_V44_ALP7