RENAULT TWINGO 2009 2.G Electrical Equipment Workshop Manual

88A-25
WIRING HARNESS
Engine wiring: Removal - Refitting
D4F, and 780
88A
-the engine cover,
-the cover from the engine compartment connection
unit,
-the engine compartment connection unit cover
bolts.

88A-26
WIRING HARNESS
Engine wiring: Removal - Refitting
D4F or D7F
88A
REMOVAL
I - REMOVAL PREPARATION OPERATION
aPosition the vehicle on a two-post lift (see Vehicle:
Towing and lifting) (MR 411, 02A, Lifting equip-
ment).
aSwitch off the ignition.
aRemove:
-the engine cover,
-the battery (see 80A, Battery, Battery: Removal -
Refitting, page 80A-2) ,
-the air filter unit (see Air filter unit: Removal - Re-
fitting) (MR 411, 12A, Fuel mixture),
-the battery tray (see 80A, Battery, Battery tray:
Removal - Refitting, page 80A-6) .
aRemove:
-the bolts (1) ,
-the engine compartment connection unit cover.II - REMOVAL OPERATION FOR PART
CONCERNED
a IMPORTANT
Consult the safety and cleanliness advice and ope-
ration recommendations before carrying out any
repair (see 88A, Wiring harness, Wiring: Precau-
tions for the repair, page 88A-2) .
121212
WARNING
To prevent any risk of noise, premature wear,
shor t circuits, etc. after the refitting operation,
mark the wiring routing and how to connect the
connectors.

88A-27
WIRING HARNESS
Engine wiring: Removal - Refitting
D4F or D7F
88A
aDisconnect:
-the oil pressure sensor connector (2) , D7F
122366
122367122368

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-29
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.
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.).

88A-30
WIRING HARNESS
Engine wiring: Removal - Refitting
D4F or D7F
88A
aDisconnect:
-the air inlet pressure sensor connector (32) , D4F
122361
122362122368

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-32
WIRING HARNESS
Engine wiring: Removal - Refitting
D4F or D7F
88A
aDisconnect:
-the sequential gearbox computer connectors (53) ,-the engine harness/sequential gearbox wiring con-
nector (54) .
aRemove:
-the alternator earth wiring nut (55) ,
-the nuts from the starter supply and earth terminals
(56) ,
-the engine earth wiring nuts (57) ,
-the earth wiring nut on the front left-hand side
member (58) ,
-the positive battery terminal wiring nut (59) ,
-the negative battery terminal wiring nuts (60) ,
-the wiring mounting nut on the battery protection
fuse board (61) ,
-the engine compartment connection unit supply wi-
ring nut (62) .
aUnclip:
-the section of wiring on the cylinder head, JH1
125270
125271

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

88A-34
WIRING HARNESS
Engine wiring: Removal - Refitting
D4F or D7F
88A
aConnect:
-the engine harness/sequential gearbox wiring con-
nector,
-the sequential gearbox computer connectors.
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 coolant temperature sensor connector,
-the crankshaft position sensor connector,
-the engine harness/injection wiring connector,
-the pinking sensor connector,
-the alternator connector,
-the motorised throttle valve connector,
-the reverse gear switch connector,
-upstream oxygen sensor connector,
-the downstream oxygen sensor connector,
-the oil pressure sensor connector,
-the radio interference suppressor connector,
-the ignition coil connector,
-the fuel vapour absorber connector,
-the air inlet 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. JH1
STANDARD HEATING
AIR CONDITIONING