17B-1
PETROL INJECTION
Oxygen sensors: Removal - Refitting
K4M
17B
REMOVING THE UPSTREAM OXYGEN
SENSOR
I - REMOVAL PREPARATION OPERATION
a Remove:
-the engine cover,
-the windscreen wiper arms (see Windscreen wi-
per 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 scuttle panel grille: Removal - Refitting)
(56A, Exterior equipment),
-the throttle valve (see 12A, Fuel mixture, Throttle
valve: Removal - Refitting, page 12A-17) ,
-the intake distributor (see 12A, Fuel mixture, Inlet
manifold: Removal - Refitting, page 12A-23) .
II - OPERATION FOR REMOVAL OF PART
CONCERNED
a Unclip the upstream oxygen sensor connector (1) .
a Disconnect the upstream oxygen sensor connector.
a Remove the upstream oxygen sensor (2) using the
(Mot. 1495-01).
Essential special tooling
Mot. 1495-01 22 mm socket for removing/
refitting oxygen sensors.
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 is for removal - refitting of the ups-
tream oxygen sensor and the downstream oxygen
sensor.
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