Renault Laguna III Manual page 1358

Oxygen sensors: Removal - Refitting
F4R
Special tooling required
Mot. 1495-01 22 mm socket for removal -
refitting of oxygen sensors.
IMPORTANT
Wear heat protective gloves during the operation.
IMPORTANT
Wear protective gloves during the operation.
WARNING
Do not use any product designed to improve the
electrical 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).
Note:
This procedure deals with removing and refitting the
upstream oxygen sensor and the downstream oxy-
gen sensor.
REMOVAL OF THE UPSTREAM OXYGEN
SENSOR
I - REMOVAL PREPARATION OPERATION
a Remove the front engine cover.
PETROL INJECTION
17B-20
a Remove:
- the bolts (1) from the turbocharger heat shield,
- the turbocharger heat shield.
II - OPERATION FOR REMOVAL OF PART
CONCERNED
a Disconnect the upstream oxygen sensor connector
(2) .
17B
123170
120206