Throttle Position Sensor Check; Oxygen Sensor Check - Mitsubishi Lancer Evolution-VII Workshop Manual

13A-134
Throttle
position
sensor
Throttle
body
Equipment side connector
Equipment
side connector
1 2
3 4
Red
Blue
MD998464
MPI -
On-vehicle Service

THROTTLE POSITION SENSOR CHECK

1. Disconnect the throttle position sensor connector.
2. Measure the resistance between the throttle position
sensor side connector terminal No. 1 and terminal No.
4.
Standard value: 3.5 - 6.5 kΩ
3. Measure the resistance between the throttle position
sensor side connector terminal No. 2 and terminal No.
4.
Normal condition:
4. If the resistance is outside the standard value, or if it
doesn't change smoothly, replace the throttle position
sensor.
NOTE
For the throttle position sensor adjustment procedure,
refer to P.13A-90.

OXYGEN SENSOR CHECK

<Oxygen sensor (front)>
Oxygen
1. Disconnect the oxygen sensor connector and connect
sensor
the special tool (test harness: MB998464) to the connector
(front)
on the oxygen sensor side.
2. Make sure that there is continuity (4.5 - 8.0 Ω at 20_C)
between terminal No. 1 and terminal No. 3 on the oxygen
sensor connector.
3. If there is no continuity, replace the oxygen sensor.
4. Warm up the engine until engine coolant is 80_C or higher.
Oxygen
sensor
(front)
equipment
side
conenctor
Throttle valve slowly open
until fully open from the idle
position
Changes smoothly in
proportion to the opening
angle of the throttle valve