Renault Laguna III Manual page 1359

Oxygen sensors: Removal - Refitting
F4R
a Remove the upstream oxygen sensor (3) using the
(Mot. 1495-01).
REFITTING THE UPSTREAM OXYGEN
SENSOR
I - REFITTING OPERATION FOR PART
CONCERNED
a Refit the upstream oxygen sensor connector on the
catalytic converter.
a Tighten the upstream oxygen sensor using the tool
(Mot. 1495-01).
a Connect the upstream oxygen sensor connector.
II - FINAL OPERATION.
a Refit:
- the turbocharger heat shield,
- the turbocharger heat shield bolts.
a Tighten the heat shield bolts.
a Refit the engine cover.
REMOVING THE DOWNSTREAM OXYGEN
SENSOR
I - REMOVAL PREPARATION OPERATION
a Remove:
- the engine cover,
PETROL INJECTION
123168
17B-21
- the air filter box (see 12A, Fuel mixture, Air filter
unit: Removal - Refitting, page 12A-13) .
a Unclip the clips (4) from the turbocharging pressure
regulation hoses.
a Disconnect:
- the turbocharging pressure regulation hoses,
- the oil vapour rebreathing pipe to the air filter unit
air outlet pipe.
- the turbocharger regulation solenoid valve connec-
tor (5) ,
- the brake servo connector (6) .
a Unclip the wiring harness from the air filter box air
outlet pipe.
17B
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