heating RENAULT TWINGO RS 2009 2.G Electrical Equipment Workshop Manual

80A-1
BATTERY
Battery: Precautions for the repair
80A
I - SAFETY
1 - DANGER: RISK FROM ACID LINKED TO
HANDLING
Sulphuric acid is a highly aggressive and toxic subs-
tance which corrodes most metals.
When handling batteries, it is very important to take the
following precautions:
-protect your eyes by wearing goggles,
-wear acid-proof gloves and clothing.
2 - DANGER: RISK OF EXPLOSION LINKED TO
CHARGING AND TO INCORRECT TIGHTENING OF
THE TERMINALS.
When a battery is charging, oxygen and hydrogen are
produced. The mixture of these two gases is explosive.
The smallest of sparks or heat sources can cause an
explosion. The explosion is so strong that the battery
can shatter and spray the acid into the surrounding at-
mosphere.
People nearby are at risk (exploded fragments, acid
splashes). Acid splashes are dangerous. They also da-
mage clothing.
Safeguarding against the danger of explosion, which
can be caused by handling a battery carelessly, must
be taken very seriously.II - GENERAL RECOMMENDATIONS
IMPORTANT
A battery contains sulphuric acid, a dangerous
substance.
If acid splashes on to your clothing, rinse all conta-
minated areas thoroughly in water.
If it comes into contact with the skin or eyes, seek
medical attention.
IMPORTANT
To prevent damaging the battery or even causing it
to explode, do not place any heat sources or create
any spar ks near a charging battery.
WARNING
Incorrect tightening could cause heating of con-
tacts, star ting or charging faults, sparking, or could
cause the battery to explode.
IMPORTANT
To avoid all risk of sparks, ensure that all electrical
consumers are fully switched off.
When a battery is being charged inside a building,
switch off the charger before connecting or discon-
necting the batter y.
Do not place any metallic items on the battery as
this may create a short circuit across the ter minals.
Never hold a naked flame, welding gun, blowtorch,
cigarette or lighted match near to a battery.
WARNING
These vehicles are equipped with a battery with lo w
water consumption. Topping up the electrolyte is
therefore prohibited.
WARNING
Before disconnecting the battery:
-wait for the motor-driven fan assembly to stop,
-wait for the computer to finish saving (1 minute).
WARNING
Some vehicles are only fitted with « TB » (low hei-
ght) batteries. To avoid damaging the bonnet, only
refit a battery which is identical to the battery origi-
nally fitted.

87B-2
PASSENGER COMPARTMENT CONNECTION UNIT
UCH: Removal - Refitting
87B
aUnclip the upper dashboard storage compartment
(3) .
aRemove:
-the glovebox (see Glovebox: Removal - Refit-
ting) (MR 412, 57A, Interior equipment),
-the passenger front airbag (see 88C, Air bag and
Pretensioners, Passenger's frontal airbag: Re-
moval - Refitting, page 88C-8) .aRemove the front left-hand side air distribution duct
(see Front side air distribution duct: Removal -
Refitting) (61A, Heating system).
II - OPERATION FOR REMOVAL OF PART
CONCERNED
aUnclip the UCH from its mounting at (5) .
aTilt the UCH at (6) .
119502
RIGHT-HAND DRIVE
121208
LEFT-HAND DRIVE
119507

87B-3
PASSENGER COMPARTMENT CONNECTION UNIT
UCH: Removal - Refitting
87B
aExtract the UCH (7) by the location of the upper das-
hboard storage compartment.
aDisconnect the connectors (8) from the UCH.
aUnclip the UCH from its mounting at (5) .
aTilt the UCH at (6) .aExtract the UCH (7) by the location of the front pas-
senger's airbag.
aDisconnect the connectors (8) from the UCH.
aRemove the UCH.
REFITTING
I - REFITTING OPERATION FOR PART
CONCERNED
aConnect the UCH connectors.
aRefit the UCH on its mounting.
aClip the UCH onto its mounting.
II - FINAL OPERATION.
aRefit the front left-hand side air distribution duct (see
Front side air distribution duct: Removal - Refit-
ting) (61A, Heating system).
aClip the upper dashboard storage compartment into
place.
aConnect the various connectors of the dashboard
lower trim.
aClip on the dashboard lower trim.
121207
RIGHT-HAND DRIVE
125234
125235
LEFT-HAND DRIVE

88A-18
WIRING HARNESS
Engine wiring: Removal - Refitting
K9K
88A
-the connector from the water detection sensor on
the fuel filter (4) ,
-the camshaft position sensor connector (5) ,
-the pinking sensor connector (6) ,
-the turbocharging pressure sensor connector (7) ,
-the air temperature sensor connector (8) ,
-the injector connector (9) ,
-the heater plugs connector (10) ,
-the fuel temperature sensor connector (11) ,
-the fuel rail pressure sensor connector (12) ,
-the diesel injection computer connectors (13) ,
-the pre-postheating unit connector (14) ,
-the exhaust gas recirculation solenoid valve con-
nector (15) ,
-the coolant temperature sensor connector (16) ,
-the crankshaft position sensor connector (17) ,
-the reversing lights switch connector (18) ,
-the front of engine wiring/engine harness connec-
tor (19) .
aDisconnect the cooling fan assembly connector (20)
.aDisconnect:
-the engine cooling fan assembly connector (21) ,
-the engine cooling fan assembly resistor connector
(22) ,
-the refrigerant fluid pressure sensor connector (23)
,
-the air conditioning compressor connector (24) .
aRemove:
-the alternator earth wiring nut (25) ,
-the nuts from the starter supply and earth terminals
(26) ,
-the engine earth wiring nut (27) ,
-the positive battery terminal wiring nut (28) ,
-the earth wiring nut on the front left-hand side
member (29) ,
-the battery protection fuse wiring nuts (30) ,
-the wiring mounting nut on the battery protection
fuse board (31) ,
-the engine compartment connection unit supply wi-
ring nut (32) .
aUnclip:
-the section of wiring on the cylinder head, STANDARD HEATING
122359
AIR CONDITIONING
125249

88A-19
WIRING HARNESS
Engine wiring: Removal - Refitting
K9K
88A
-the section of wiring on the cylinder block and sub-
frame,
-the section of wiring on the engine cooling fan as-
sembly.
aRemove the engine harness.
REFITTING
I - REFITTING PREPARATIONS OPERATION
aIf replacing with a complete wiring harness, lock the
unused connectors (see Connectors: Sealing and
locking) (Technical Note 6015A, 88A, Wiring).
II - REFITTING OPERATION FOR PART
CONCERNED
aRefit the engine harness.
aConnect the engine cooling fan assembly connector.
aConnect:
-the air conditioning compressor connector,
-the refrigerant fluid pressure sensor connector,
-the engine cooling fan assembly resistor connec-
tor,
-the engine cooling fan assembly connector.
aConnect:
-the engine harness/front of engine wiring connec-
tor,
-the reversing lights switch connector,
-the crankshaft position sensor connector,
-the coolant temperature sensor connector,
-the air inlet temperature sensor connector,-the exhaust gas recirculation solenoid valve con-
nector,
-the connector to the pre-postheating unit,
-the diesel injection computer connectors,
-the fuel rail pressure sensor connector,
-the fuel temperature sensor connector,
-the heater plugs connector,
-the injector connectors,
-the air temperature sensor connector,
-the turbocharging pressure sensor connector,
-the pinking sensor connector,
-the camshaft position sensor connector,
-the connector from the water detection sensor on
the fuel filter,
-the alternator connector,
-the oil pressure sensor connector.
aRefit:
-the engine compartment connection unit supply wi-
ring nut,
-the wiring mounting nut on the battery protection
fuse board,
-the battery protection fuse wiring nuts,
-the earth wiring nut on the front left-hand side
member,
-the positive battery terminal wiring nut,
-the engine earth wiring nut,
-the starter supply and earth terminal nuts,
-the alternator earth wiring nut.
aClip:
-the section of wiring on the cylinder head,
-the section of wiring on the cylinder block and sub-
frame,
-the section of wiring on the engine cooling fan as-
sembly.
III - FINAL OPERATION.
aRefit:
-the battery tray (see 80A, Battery, Battery tray:
Removal - Refitting, page 80A-6) ,
-the air filter unit (see Air filter unit: Removal - Re-
fitting) (MR 411, 12A, Fuel mixture), WARNING
To prevent any damage during the removal ope-
ration, check that the wiring is free from its moun-
tings (retaining clip, plastic clip, adhesive tape,
connector, etc.).
STANDARD HEATING
AIR CONDITIONING

88A-23
WIRING HARNESS
Engine wiring: Removal - Refitting
D4F, and 780
88A
-the oil vapour recirculation hose reheater connec-
tor (5) ,
-the engine harness/injection wiring connector (6) ,
-the coolant temperature sensor connector (7) ,
-the crankshaft position sensor connector (8) ,
-the oil pressure sensor connector (9) ,
-the alternator connector (10) ,
-the pinking sensor connector (11) ,
-the air temperature sensor connector (12) ,
-the turbocharger pressure sensor connector (13) ,
-the motorised throttle valve connector (14) ,
-the ignition coil connector (15) ,
-the turbocharger solenoid valve connector (16) ,
-the downstream oxygen sensor connector (17) ,
-the reversing lights switch connector (18) ,
-the petrol injection computer connectors (19) ,
-the engine harness/front of engine wiring connec-
tor (20) .
aDisconnect the cooling fan assembly connector (21)
.aDisconnect:
-the engine cooling fan assembly connector (22) ,
-the engine cooling fan assembly resistor connector
(23) .
-the refrigerant fluid pressure sensor connector (24)
,
-the air conditioning compressor connector (25) ,
aRemove:
-the alternator earth wiring nut (26) ,
-the nuts from the starter supply and earth terminals
(27) ,
-the earth wiring nuts on the engine (28) ,
-the earth wiring nut on the front left-hand side
member (29) ,
-the positive battery terminal wiring nut (30) ,
-the negative battery terminal wiring nuts (31) ,
-the wiring mounting nut on the battery protection
fuse board (33) ,
-the engine compartment connection unit supply
terminal nut (32) .
aUnclip:
-the section of wiring on the cylinder head, STANDARD HEATING
122359
AIR CONDITIONING
125249

88A-24
WIRING HARNESS
Engine wiring: Removal - Refitting
D4F, and 780
88A
-the section of wiring on the cylinder block and sub-
frame,
-the section of wiring on the engine cooling fan as-
sembly.
aRemove the engine harness.
REFITTING
I - REFITTING PREPARATION OPERATION
aIf replacing with a complete wiring harness, lock the
unused connectors (see Connectors: Sealing and
locking) (Technical Note 6015A, 88A, Wiring).
II - REFITTING OPERATION FOR PART
CONCERNED
aRefit the engine harness.
aConnect the engine cooling fan assembly connector.
aConnect:
-the air conditioning compressor connector,
-the refrigerant fluid pressure sensor connector,
-the engine cooling fan assembly connector,
-the engine cooling fan assembly resistor connec-
tor.
aConnect:
-the engine harness/front of engine wiring connec-
tor,
-the connectors to the petrol injection computer,
-the reversing lights switch connector,
-the downstream oxygen sensor connector,
-the turbocharger solenoid valve connector,-the ignition coil connector,
-the motorised throttle valve connector,
-the turbocharger pressure sensor connector,
-the air temperature sensor connector,
-the pinking sensor connector,
-the alternator connector,
-the oil pressure sensor connector,
-the crankshaft position sensor connector,
-the coolant temperature sensor connector,
-the engine harness/injection wiring connector,
-the oil vapour recirculation hose reheater connec-
tor,
-the air inlet pressure sensor connector,
-upstream oxygen sensor connector,
-the fuel vapour absorber connector.
aRefit:
-the engine compartment connection unit supply
terminal nut,
-the wiring mounting nut on the battery protection
fuse board,
-the negative battery terminal wiring nuts,
-the positive battery terminal wiring nut,
-the earth wiring nut on the front left-hand side
member,
-the earth wiring nuts on the engine,
-the starter wiring nuts,
-the alternator earth wiring nut.
aClip:
-the section of wiring on the cylinder head,
-the section of wiring on the cylinder block and sub-
frame,
-the section of wiring on the engine cooling fan as-
sembly.
III - FINAL OPERATION.
aRefit:
-the battery tray (see 80A, Battery, Battery tray:
Removal - Refitting, page 80A-6) ,
-the air filter unit (see Air filter unit: Removal - Re-
fitting) (MR 411, 12A, Fuel mixture),
-the battery (see 80A, Battery, Battery: Removal -
Refitting, page 80A-2) , WARNING
To prevent any damage during the removal ope-
ration, check that the wiring is free from its moun-
tings (retaining clip, plastic clip, adhesive tape,
connector, etc.).
STANDARD HEATING
AIR CONDITIONING

88A-28
WIRING HARNESS
Engine wiring: Removal - Refitting
D4F or D7F
88A
-the fuel vapour absorber connector (3) ,
-the ignition coil connector (4) ,
-the upstream oxygen sensor connector (5) ,
-the downstream oxygen sensor connector (6) ,
-the reversing lights switch connector (7) ,
-the radio interference suppressor connector (8) ,
-the alternator connector (11) ,
-the engine harness/injection wiring connector (12) ,
-the air inlet temperature sensor connector (13) ,
-the pinking sensor connector (14) ,
-the air inlet pressure sensor connector (15) ,
-the motorised throttle valve connector (16) ,
-the coolant temperature sensor connector (17) ,
-the crankshaft position sensor connector (18)
-the petrol injection computer connectors (19) ,
-the engine harness/front of engine wiring connec-
tor (20) .
aDisconnect the cooling fan assembly connector (21)
.aDisconnect:
-the engine cooling fan assembly connector (22) ,
-the engine cooling fan assembly resistor connector
(23) ,
-the refrigerant fluid pressure sensor connector (9) ,
-the air conditioning compressor connector (10) .
aRemove:
-the alternator earth wiring nut (24) ,
-the nuts from the starter supply and earth terminals
(25) ,
-the engine earth wiring nuts (26) ,
-the earth wiring nut on the front left-hand side
member (27) ,
-the positive battery terminal wiring nut (28) ,
-the negative battery terminal wiring nuts (29) ,
-the wiring mounting nut on the battery protection
fuse board (30) ,
-the engine compartment connection unit supply
terminal nut (31) .
aUnclip:
-the section of wiring on the cylinder head, STANDARD HEATING
122359
AIR CONDITIONING
125249

88A-31
WIRING HARNESS
Engine wiring: Removal - Refitting
D4F or D7F
88A
-the fuel vapour absorber connector (33) ,
-the ignition coil connector (34) ,
-the radio interference suppressor connector (35) ,
-the oil pressure sensor connector (36) ,
-the downstream oxygen sensor connector (37) ,
-the upstream oxygen sensor connector (38) ,
-the reverse gear switch connector (39) ,
-the motorised throttle valve connector (40) ,
-the alternator connector (43) ,
-the pinking sensor connector (44) ,
-the engine harness/injection wiring connector (45) ,
-the crankshaft position sensor connector (46) ,
-the coolant temperature sensor connector (47) ,
-the petrol injection computer connectors (48) ,
-the engine harness/front of engine wiring connec-
tor (49) .
aDisconnect the cooling fan assembly connector (50)
.aDisconnect:
-the engine cooling fan assembly connector (51) ,
-the engine cooling fan assembly resistor connector
(52) ,
-the refrigerant fluid pressure sensor connector (41)
,
-the air conditioning compressor connector (42) . STANDARD HEATING
122359
AIR CONDITIONING
125249

88A-33
WIRING HARNESS
Engine wiring: Removal - Refitting
D4F or D7F
88A
-the section of wiring on the cylinder block and sub-
frame,
-the section of wiring on the engine cooling fan as-
sembly.
aRemove the engine harness.
REFITTING
I - REFITTING PREPARATIONS OPERATION
aIf replacing with a complete wiring harness, lock the
unused connectors (see Connectors: Sealing and
locking) (Technical Note 6015A, 88A, Wiring).
II - REFITTING OPERATION FOR PART
CONCERNED
aRefit the engine harness.
aConnect the engine cooling fan assembly connector.
aConnect:
-the engine cooling fan assembly connector,
-the engine cooling fan assembly resistor connec-
tor,
-the air conditioning compressor connector,
-the refrigerant fluid pressure sensor connector.
aConnect:
-the engine harness/front of engine wiring connec-
tor,-the connectors to the petrol injection computer,
-the crankshaft position sensor connector,
-the coolant temperature sensor connector,
-the motorised throttle valve connector,
-the air inlet pressure sensor connector,
-the pinking sensor connector,
-the air inlet temperature sensor connector,
-the engine harness/injection wiring connector,
-the alternator connector,
-the radio interference suppressor connector,
-the reversing lights switch connector,
-the downstream oxygen sensor connector,
-upstream oxygen sensor connector,
-the ignition coil connector,
-the fuel vapour absorber connector,
-the oil pressure sensor connector.
aRefit:
-the engine compartment connection unit supply
terminal nut,
-the wiring mounting nut on the battery protection
fuse board,
-the negative battery terminal wiring nuts,
-the positive battery terminal wiring nut,
-the earth wiring nut on the front left-hand side
member,
-the earth wiring nuts on the engine,
-the starter wiring nuts,
-the alternator earth wiring nut.
aClip:
-the section of wiring on the cylinder head,
-the section of wiring on the cylinder block and sub-
frame,
-the section of wiring on the engine cooling fan as-
sembly.
aRefit the engine harness. WARNING
To prevent any damage during the removal ope-
ration, check that the wiring is free from its moun-
tings (retaining clip, plastic clip, adhesive tape,
connector, etc.).
D7F
STANDARD HEATING
AIR CONDITIONING
D4F