2009 RENAULT TWINGO Electrical Equipment Workshop Manual

88A-1
WIRING HARNESS
Diagnostic socket: List and location of components
88A
LOCATION
The diagnostic socket (1) is located in the glovebox.
119521

88A-2
WIRING HARNESS
Wiring: Precautions for the repair
88A
I - SAFETY
1 - Potentially dangerous components
Do not leave any unused +12V connectors exposed to
the air without any protection (see Connector: Sea-
ling and locking) (Technical Note 6015A, 88A, Wi-
ring).
Check that there is no contact between the wiring and
the fuel and brake pipes.
Avoid mounting the wiring in areas with a temperature
above 100˚C.
2 - Advice to be followed before any operation
Before carrying out any work on the wiring, disconnect
the battery.
3 - Instructions to be followed during the operation
To prevent the wiring from being damaged, check that
the surrounding area is not mechanically harmful (e.g.:
door windows, sharp corners, burrs, studs, etc.).
The wiring should be at least 30 mm away from any
moving components (belt, pulley, steering column,
etc.).
Depending on the surrounding area, check that the
unused connectors respect the necessary sealing
constraints (see Connector: Sealing and locking)
(Technical Note 6015A, 88A, Wiring).
All of the connections (connectors) used in the engine
compartment are sealed; do not remove the seal from
around the connectors.II - GENERAL RECOMMENDATIONS
Do not connect an earth to a stud with insulating pro-
tection (paint,etc.).
Do not use more than two earth terminals on the same
point.
Do not use power earths on the same point as electro-
nic earths.
To prevent water flowing into the connectors, make a
low point just on the wiring routing (just before the con-
nector).
For connections between fixed and mobile compo-
nents, secure the wiring on the fixed part.
Overlapping of the battery feed wires (positive and ne-
gative) causes disruption; they must be secured sepa-
rately.
Wiring mountings:
- use plastic clips, ensuring that the colour coding is
respected,
-do not use steel clips that are not protected with rub-
ber,
- keep the clips integrated into the wiring during a re-
placement operation,
- do not leave steering wheel wires without protection.
Check that:
- the shunts are correctly secured,
- the connectors are correctly housed and locked.
Wiring routing:
- when it is visible it must be aesthetically pleasing, and
resemble the routing marked during removal,
- prohibit wiring routing in grooves and overlaps (risk of
wear through friction),
- prohibit mounting several wires on the same clip,
- do not lock the connectors or wiring in areas that are
sensitive to drilling (number plate etc.). WARNING
To prevent damaging the connectors, consult the
disconnection procedure (see Connector: Discon-
nection and reconnection) (Technical Note
6015A, 88A, Wiring).
WARNING
To prevent any risk of noise, premature wear, short
circuits, etc. after the refitting operation, mark the
wiring routing and how to connect the connectors.
WARNING
To prevent any damage during the removal opera-
tion, check that the wiring is free from its mountings
(retaining clip, plastic clip, adhesive tape, connec-
tor, etc.).

88A-3
WIRING HARNESS
Front left-hand wiring: Removal - Refitting
LEFT-HAND DRIVE
88A
REMOVAL
I - REMOVAL PREPARATION OPERATION
a
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 battery (see 80A, Battery, Battery: Removal -
Refitting, page 80A-2) ,
-the battery tray (see 80A, Battery, Battery tray:
Removal - Refitting, page 80A-6) ,
-the front wheel arch liners (see Front wheel arch
liner: Removal - Refitting) (MR 412, 55A, Exterior
protection),
-the front bumper (see Front bumper: Removal -
Refitting) (MR 412, 55A, Exterior protection),
-the side indicators (see 80B, Headlights, Side in-
dicator: Removal - Refitting, page 80B-13) ,
-the master cylinder (see Master cylinder: Remo-
val - Refitting) (MR 411, 37A, Mechanical compo-
nent controls),
-the brake servo (see Brake servo: Removal - Re-
fitting) (MR 411, 37A, Mechanical component con-
trols),
-the left-hand suspended engine mounting (see
Left-hand suspended engine mounting: Remo-
val - Refitting) (MR 411, 19D, Engine mounting).aUnclip the glovebox.
aRemove the dashboard lower trim.
aDisconnect the cruise control switch connector (1) .
aRemove:
-the bolts (2) 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) .
Note:
The dashboard does not need to be removed in
order to access the pedal wiring.
119506
CRUISE CONTROL
121212

88A-4
WIRING HARNESS
Front left-hand wiring: Removal - Refitting
LEFT-HAND DRIVE
88A
-the cover to the engine compartment connection
unit.
II - REMOVAL OPERATION FOR PART
CONCERNED
a
aDisconnect the front left-hand wiring/engine harness
connector (3) .
aRemove:
-the fuses (4) ,
-the engine compartment connection unit supply wi-
ring nut (5) .aUnclip:
-the front left-hand wiring/engine harness connector
(6) ,
-the fuse holders (7) .
aRemove the engine compartment connection unit
nuts (8) . WARNING
To prevent any risk of noise, premature wear,
short circuits, etc. after the refitting operation,
mark the wiring routing and how to connect the
connectors.
121213
121214
121215

88A-5
WIRING HARNESS
Front left-hand wiring: Removal - Refitting
LEFT-HAND DRIVE
88A
aUnclip the engine compartment connection unit
board at (9) .
121217

88A-6
WIRING HARNESS
Front left-hand wiring: Removal - Refitting
LEFT-HAND DRIVE
88A
aDisconnect:
-the front right-hand indicator connector (10) ,
-the front right-hand headlight connector (11) ,
-the front right-hand side light connector (12) ,
125417
122340122341

88A-7
WIRING HARNESS
Front left-hand wiring: Removal - Refitting
LEFT-HAND DRIVE
88A
-the horn connector (13) ,
-the windscreen washer pump connector (14) ,
-the front left-hand side light connector (15) ,
-the front left-hand headlight connector (16) ,
-the front left-hand indicator connector (17) ,
-the headlight beam adjustment motor connectors
(18) ,
-the front right-hand wheel speed sensor connector
(19) ,
-the hydraulic brake unit connector (20) ,
-the injection computer connector (21) ,
-the front left-hand wheel speed sensor connector
(22) ,
-the front left-hand wiring/passenger compartment
wiring connectors (23) ,
-the clutch pedal position sensor connector (24) ,
-the STOP warning light switch connector (25) ,
-the acceleration pedal potentiometer connector
(26) .
aDisconnect the regulated additional heater connec-
tor (27) .
aRemove the additional heater earth wiring nut (28) .
aDisconnect the gearbox pump assembly relay con-
nector (29) .
aRemove:
-the earth wiring nut on the front right-hand side
member (30) ,
-the earth wiring nut on the front left-hand side
member (31) ,
-the earth wiring nut on the body (32) ,
-the hydraulic brake unit earth wiring nut (33) ,
-the earth wiring nut on the negative battery terminal
(34) ,
-the earth wiring nut on the bodywork (35) ,-the front windscreen wiper mechanism (see 85A,
Wiping - Washing, Windscreen wiper mecha-
nism: Removal - Refitting, page 85A-10) .
aUnclip:
-the section of wiring from the bulkhead,
-the section of wiring on the front bumper cross
member,
-the section of wiring from the windscreen washer
reservoir
-the section of wiring from the dashboard cross
member.
aUnclip the front left-hand wiring from the bulkhead.
aRemove the front left-hand wiring through the engi-
ne compartment.
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
aPosition the front left-hand wiring across the bulk-
head.
aClip the front left-hand wiring onto the bulkhead.
aConnect:
-the acceleration pedal potentiometer connector,
-the STOP warning light switch connector,
-the clutch pedal position sensor connector ,
-the front left-hand wiring/passenger compartment
wiring connectors,
-the injection computer connector,
-the front left-hand wheel speed sensor connector,
-the hydraulic brake unit connector,
-the front right-hand wheel speed sensor connector,
-the headlight beam adjustment motor connectors, CLIMATE CONTROL
JH1
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-8
WIRING HARNESS
Front left-hand wiring: Removal - Refitting
LEFT-HAND DRIVE
88A
-the front left-hand indicator connector,
-the front left-hand headlight connector,
-the front left-hand side light connector,
-the windscreen washer pump connector,
-the horn connector,
-the front right-hand side light connector,
-the front right-hand headlight connector,
-the front right-hand indicator connector.
aConnect the regulated additional heater connector.
aRefit the additional heater earth wiring nut.
aConnect the gearbox pump assembly relay connec-
tor.
aRefit:
-the windscreen wiper mechanism (see 85A, Wi-
ping - Washing, Windscreen wiper mechanism:
Removal - Refitting, page 85A-10) ,
-the earth wiring nut on the bodywork,
-the earth wiring nut on the negative battery termi-
nal,
-the hydraulic brake unit earth wiring nut,
-the earth wiring nut on the body,
-the earth wiring nut on the front left-hand side
member,
-the earth wiring nut on the front right-hand side
member,
aClip:
-the section of wiring onto the dashboard cross
member,
-the section of wiring onto the windscreen washer
reservoir
-the section of wiring onto the front bumper cross
member,
-the section of wiring onto the bulkhead.
aRefit the engine compartment connection unit nuts.aClip on:
-the fuse holders,
-the front left-hand wiring/engine harness connec-
tor.
aConnect the front left-hand wiring/engine harness
connector.
aRefit:
-the engine compartment connection unit supply wi-
ring nut,
-the fuses.
aClip on the engine compartment connection unit
board.
III - FINAL OPERATION
aRefit:
-the cover from the engine compartment connection
unit,
-the bolts.
aConnect the cruise control switch connector.
aRefit the dashboard lower trim.
aClip the glovebox in position.
aRefit:
-the left-hand suspended engine mounting (see
Left-hand suspended engine mounting: Remo-
val - Refitting) (MR 411, 19D, Engine mounting),
-the brake servo (see Brake servo: Removal - Re-
fitting) (MR 411, 37A, Mechanical component con-
trols),
-the master cylinder (see Master cylinder: Remo-
val - Refitting) (MR 411, 37A, Mechanical compo-
nent controls),
-the side indicators (see 80B, Headlights, Side in-
dicator: Removal - Refitting, page 80B-13) ,
-the front bumper (see Front bumper: Removal -
Refitting) (MR 412, 55A, Exterior protection), CLIMATE CONTROL
JH1
WARNING
To prevent damage to the wiring har ness when
refitting, obser ve the original routing.
CRUISE CONTROL