2009 RENAULT TWINGO Engine And Peripherals Workshop Manual

17B-14
PETROL INJECTION
Oxygen sensors: Removal - Refitting
D4F, and 772 – D7F
17B
REFITTING
I - REFITTING THE UPSTREAM OXYGEN SENSOR
aRefit the upstream oxygen sensor.
aTighten the upstream oxygen sensor using a 24mm
open-ended spanner.
aConnect the upstream oxygen sensor connector.
II - REFITTING THE DOWNSTREAM OXYGEN
SENSOR
aRefit the downstream oxygen sensor.
aTighten the downstream oxygen sensor using a
24mm open-ended spanner.
aConnect the downstream oxygen sensor connector.

17B-15
PETROL INJECTION
Oxygen sensors: Removal - Refitting
D4F, and 780 or 782
17B
REMOVAL
I - REMOVAL PREPARATION OPERATION
aPosition the vehicle on a two-post lift (see Vehicle:
Towing and lifting) (02A, Lifting equipment).
II - OPERATION FOR REMOVAL OF PART
CONCERNED
1 - Removing the upstream oxygen sensor
aRemove the air filter unit (see 12A, Fuel mixture,
Air filter unit: Removal - Refitting, page 12A-13) .aDisconnect the upstream oxygen sensor connector
(1) .
aUnclip the upstream oxygen sensor connector from
the rocker cover.
aUnclip the upstream oxygen sensor wiring (2) .
aRemove:
-the bolts (3) from the exhaust manifold heat shield,
-the turbocharger heat shield,
-the upstream oxygen sensor (4) from the catalytic
converter using the tool (Mot. 1495-01). Special tooling required
Mot. 1495-0122 mm socket for removal -
refitting of oxygen sensors.
Tightening torquesm
upstream oxygen sen-
sor45 N.m
turbocharger heat shield
bolts8 N.m
downstream oxygen
sensor45 N.m
WARNING
Do not use any product designed to improve the
electr ical contact in the injection computer and oxy-
gen sensor connectors or on the bodies of the oxy-
gen sensors.
Failure to respect this advice causes the oxygen
sensor to malfunction and results in failure to com-
ply with the emission control standard.
WARNING
If the connections are corroded, repair the wiring
(see Wiring: Precautions for repair) (Technical
Note 6015A, 88A, Wiring).
120957
120957

17B-16
PETROL INJECTION
Oxygen sensors: Removal - Refitting
D4F, and 780 or 782
17B
2 - Removal of the downstream oxygen sensor
aDisconnect the catalytic converter downstream oxy-
gen sensor connector (5) .
aUnclip the downstream oxygen sensor connector
from the catalytic converter.
aUnclip the wiring of the catalytic converter down-
stream oxygen sensor at (6) .
aRemove the downstream oxygen sensor (7) from
the catalytic converter using the tool (Mot. 1495-01).
REFITTING
REFITTING OPERATION FOR PART CONCERNED
1 - Refitting the upstream oxygen sensor
aRefit the upstream oxygen sensor.
aTorque tighten the upstream oxygen sensor (45
N.m) using the (Mot. 1495-01).
aRefit:
-the turbocharger heat shield,
-the turbocharger heat shield bolts.
aTorque tighten the turbocharger heat shield bolts
(8 N.m).
aClip:
-the upstream oxygen sensor wiring,
-the upstream oxygen sensor connector onto the
rocker cover.aConnect the upstream oxygen sensor connector.
aRefit the air filter unit (see 12A, Fuel mixture, Air fil-
ter unit: Removal - Refitting, page 12A-13) .
2 - Refitting the downstream oxygen sensor
aRefit the downstream oxygen sensor.
aTorque tighten the downstream oxygen sensor
(45 N.m) using the tool (Mot. 1495-01).
aClip the downstream oxygen sensor wiring onto the
catalytic converter.
aClip the downstream oxygen sensor connector onto
the catalytic converter.
aConnect the downstream oxygen sensor connector.
121774

17B-17
PETROL INJECTION
Oxygen sensors: Removal - Refitting
K4M
17B
REMOVING THE UPSTREAM OXYGEN
SENSOR
I - REMOVAL PREPARATION OPERATION
aPosition the vehicle on a two-post lift (see Vehicle:
Towing and lifting) (02A, Lifting equipment).
aRemove:
-the front right-hand wheel (see Wheel: Removal -
Refitting) (35A, Wheels and tyres),-the front right-hand wheel arch liner (see Front
wheel arch liner: Removal - Refitting) (55A, Ex-
terior protection),
-the engine undertray.
II - REMOVAL OPERATION
aDisconnect the upstream oxygen sensor connector
(1) .
aUnclip the wiring from the upstream oxygen sensor
at (2) .
aRemove the upstream oxygen sensor . Special tooling required
Mot. 149522 mm socket for removal -
refitting of oxygen sensors -
1/2" square dr ive and 24 mm
hexagonal ext.
Mot. 1495-0122 mm socket for removal -
refitting of oxygen sensors.
Tightening torquesm
upstream oxygen sen-
sor90˚
downstream oxygen
sensor45 N.m
WARNING
Do not use any product designed to improve the
electr ical contact in the injection computer and oxy-
gen sensor connectors or on the bodies of the oxy-
gen sensors.
Failure to respect this advice prevents the oxygen
sensor from operating correctly and results in fail-
ure to comply with the emission control standard.
WARNING
If the connections are corroded, repair the wiring
(see Wiring: Precautions for repair) (Technical
Note 6015A, 88A, Wiring).
Note:
This procedure is for removal - refitting of the
upstream oxygen sensor and the downstream oxy-
gen sensor.
132373
132539

17B-18
PETROL INJECTION
Oxygen sensors: Removal - Refitting
K4M
17B
REFITTING THE UPSTREAM OXYGEN
SENSOR
I - REFITTING PREPARATION OPERATION
aClean the threading of the upstream oxygen sensor
using a WIRE BRUSH.
aUse SURFACE CLEANER (see Vehicle: Parts
and consumables for the repair) (04B, Consuma-
bles - Products) to clean and degrease:
-the thread hole of the upstream oxygen sensor on
the exhaust manifold,
-the threading of the upstream oxygen sensor if it is
to be reused.
II - REFITTING OPERATION
aRefit the upstream oxygen sensor.
aAngle tighten the upstream oxygen sensor ( 90˚).
aAttach the upstream oxygen sensor wiring.
aConnect the upstream oxygen sensor connector.III - FINAL OPERATION
aRefit:
-the engine undertray.
-the front right-hand wheel arch liner (see Front
wheel arch liner: Removal - Refitting) (55A, Ex-
terior protection),
-the front right-hand wheel (see Wheel: Removal -
Refitting) (35A, Wheels and tyres).
REMOVAL OF THE DOWNSTREAM
OXYGEN SENSOR
I - REMOVAL PREPARATION OPERATION
aDisconnect the battery (see ) (80A, Battery).
aRemove:
-the windscreen wiper arms (see Windscreen wip-
er arm: Removal - Refitting) (85A, Wiping -
Washing),
-the scuttle panel grille (see Scuttle panel grille:
Removal - Refitting) (56A, Exterior equipment),
-the scoop under the scuttle panel grille (see Scoop
under the scuttle panel grille: Removal - Refit-
ting) (56A, Exterior equipment).
132539
Note:
For angular tightening, make a mark (6) on the
catalytic pre-converter in the middle of the flat
surface of the upstream oxygen sensor. Move the
upstream oxygen sensor stop (7) to the mark (6)
.

17B-19
PETROL INJECTION
Oxygen sensors: Removal - Refitting
K4M
17B
II - REMOVAL OPERATION
aDisconnect the downstream oxygen sensor connec-
tor (3) .
aUnclip the wiring from the downstream oxygen sen-
sor at (4) .
aRemove the downstream oxygen sensor (5) using
the tool (Mot. 1495).
REFITTING THE DOWNSTREAM OXYGEN
SENSOR
I - REFITTING PREPARATION OPERATION
aClean the threading of the downstream oxygen sen-
sor using a WIRE BRUSH.
aUse SURFACE CLEANER (see Vehicle: Parts
and consumables for the repair) (04B, Consuma-
bles - Products) to clean and degrease:
-the thread hole of the downstream oxygen sensor
on the exhaust manifold,
-the threading of the downstream oxygen sensor if it
is to be reused.
II - REFITTING OPERATION
aRefit the downstream oxygen sensor.
aTorque tighten the downstream oxygen sensor
(45 N.m) using the tool (Mot. 1495-01).
aClip on the downstream oxygen sensor wiring.
aConnect the downstream oxygen sensor connector.III - FINAL OPERATION
aRefit:
-the scoop under the scuttle panel grille (see Scoop
under the scuttle panel grille: Removal - Refit-
ting) (56A, Exterior equipment),
-the scuttle panel grille (see Scuttle panel grille:
Removal - Refitting) (56A, Exterior equipment),
-the windscreen wiper arms (see Windscreen wip-
er arm: Removal - Refitting) (85A, Wiping -
Washing).
aConnect the battery (see ) (80A, Battery).
132378

17B-20
PETROL INJECTION
Petrol injection computer: Removal - Refitting
D4F or D7F
17B
REMOVAL
I - REMOVAL PREPARATION OPERATION
aDisconnect the battery (see ) (MR 411, 80A, Bat-
tery).II - OPERATION FOR REMOVAL OF PART
CONCERNED
aDisconnect the injection computer connectors (1) .
aRemove:
-the injection computer nuts (2) ,
-the injection computer.
REFITTING
I - REFITTING OPERATION FOR PART
CONCERNED
aRefit:
-the injection computer,
-the injection computer nuts.
aTorque tighten the injection computer nuts (8
N.m).
aConnect the injection computer connectors.
II - FINAL OPERATION
aConnect the battery (see ) (MR 411, 80A, Battery).
aCarry out the necessary configurations and/or pro-
gramming, using the Diagnostic tool (see Fault
finding - Replacement of components) (MR 413,
17B, Petrol injection). Equipment required
Diagnostic tool
Tightening torquesm
injection computer nuts8 N.m
WARNING
Do not use any product designed to improve the
electr ical contact in the injection computer and oxy-
gen sensor connectors or on the bodies of the oxy-
gen sensors.
Failure to respect this advice prevents the oxygen
sensor from operating correctly and results in fail-
ure to comply with the emission control standard.
WARNING
If the connections are corroded, repair the wiring
(see Wiring: Precautions for repair) (Technical
Note 6015A, 88A, Wiring).
120779

17B-21
PETROL INJECTION
Petrol injection computer: Removal - Refitting
K4M
17B
REMOVAL
I - REMOVAL PREPARATION OPERATION
aRemove the battery (see Battery: Removal - Refit-
ting) (80A, Battery).aRemove:
-the tamperproof bolts (1) using the tool (Mot. 1844)
(2) and a drill,
-the petrol injection computer protector. Special tooling required
Mot. 1844Drill bush for removing the
tamper-proof bolts from the
injection computer protective
cover
Equipment required
drill
Diagnostic tool
WARNING
Do not use any product designed to improve the
electr ical contact in the injection computer and oxy-
gen sensor connectors or on the bodies of the oxy-
gen sensors.
Failure to respect this advice prevents the oxygen
sensor from operating correctly and results in fail-
ure to comply with the emission control standard.
WARNING
If the connections are corroded, repair the wiring
(see Wiring: Precautions for repair) (Technical Note
6015A, 88A, Wiring).
RIGHT-HAND DRIVE
132448