Mitsubishi Eclipse 1990 Service Manual page 663

HEATED OXYGEN SENSOR CHECK
<Heated oxygen sensor (front)>
1. Disconnect the heated
sensor equipment
side connector
2.
3.
4. Warm up the engine until engine coolant is
5. Use the jumper wires to connect terminal 1 (red clip)
6.
7.
8.
the special tool
the heated oxygen sensor
Make sure that there is continuity [Approx. 12
between terminal 1 (red clip
terminal 3 (blue clip of special tool) on the heated oxygen
sensor connector.
If there is no continuity, replace the heated oxygen sensor.
or higher.
of the heated oxygen sensor connector to the battery
terminal and terminal 3 (blue clip) to the battery
terminal.
Caution
Be very careful when connecting the jumper wires;
incorrect connection can damage the heated oxygen
sensor.
Connect a digital voltage meter between terminal 2 (black
clip) and terminal 4 (white clip).
While repeatedly racing the
oxygen sensor
Standard value
w n e n
engine
If the sensor is defective,' replace the
s e n s o r .
NOTE
For removal and installation of the
refer to the following sections:
GROUP 15 Exhaust
Exhaust Pipe and Main
GROUP 15
Engine>
and con-
sensor
harness) to the
special tool) and
voltage.
,
ing the engine.@-
age of
Engine
on,
heated
,
. .
sensor,