Mitsubishi Pajero Pinin. Manual - part 59

GDI – 

On-vehicle Service

13A-102

ENGINE CONTROL RELAY, FUEL PUMP
RELAY, INJECTOR DRIVER RELAY AND
THROTTLE VALVE CONTROL SERVO RELAY
CONTINUITY CHECK

Battery voltage

Terminal No.

y

g

1

2

3

4

Not supplied

Supplied

INTAKE AIR TEMPERATURE SENSOR CHECK

1.

Disconnect the air flow sensor connector.

2.

Measure resistance between terminals 5 and 6.

Standard value:

2.3 – 3.0 k

Ω

 (at 20

_

C)

0.30 – 0.42 k

Ω

 (at 80

_

C)

3.

Measure resistance while heating the sensor using a hair
drier.

Normal condition:

Temperature (

_

C)

Resistance (k

Ω

)

Higher

Smaller

4.

If the value deviates from the standard value or the
resistance remains unchanged, replace the air flow sensor
assembly.

ENGINE COOLANT TEMPERATURE SENSOR
CHECK

Caution
Be careful not to touch the connector (resin section) with
the tool when removing and installing.

1.

Remove the engine coolant temperature sensor.

Engine control relay

Fuel pump relay

Injector
driver relay

Equipment side connector

Equipment side connector

Throttle valve control
servo relay

Air flow sensor

Equipment side connector

Intake air temperature
sensor

Equipment
side connector

Engine cool-
ant tempera-
ture sensor

GDI – 

On-vehicle Service

13A-103

2.

With temperature sensing portion of engine coolant
temperature sensor immersed in hot water, check
resistance.

Standard value:

2.1 – 2.7 k

Ω

 (at 20

_

C)

0.26 – 0.36 k

Ω

 (at 80

_

C)

3.

If the resistance deviates from the standard value greatly,
replace the sensor.

4.

Apply sealant to threaded portion.

Specified sealant:

3M NUT Locking Part No.4171 or equivalent

5.

Install the engine coolant temperature sensor and tighten
it to the specified torque.

Tightening torque: 29 Nm

THROTTLE POSITION SENSOR CHECK

1.

Disconnect the throttle position sensor connector.

2.

Measure the resistance between throttle position sensor
side connector terminal 1 and terminal 3.

Standard value: 3.5 – 6.5 k

Ω

3.

Measure resistance between terminal Nos. 1 and 2 as
well as 1 and 4 of the throttle position sensor connector,
respectively.

Normal condition:

Throttle valve slowly open
until fully open from the idle
position

Changes smoothly in
proportion to the opening
angle of the throttle valve

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-92.

Equipment side connector

Throttle
position
sensor

GDI – 

On-vehicle Service

13A-104

ACCELERATOR PEDAL POSITION SENSOR
(1ST CHANNEL) CHECK

1.

Disconnect the accelerator pedal position sensor
connector.

2.

Measure resistance between terminal No.2 (sensor power
supply) and 1 (sensor earth) of the sensor connector.

Standard value: 3.5 – 6.5 k

Ω

3.

Measure resistance between terminal No.2 (sensor power
supply) and 3 (sensor output) of the connector.

Normal condition:

Depress the accelerator
pedal slowly.

Resistance value changes in
accordance with the
accelerator pedal
depression smoothly.

4.

If not within the standard value, or resistance value does
not change smoothly, replace the accelerator pedal position
sensor assembly.

NOTE
After replacement, adjust the accelerator pedal position
sensor. (Refer to P.13A-94.)

ACCELERATOR PEDAL POSITION SENSOR
(2ND CHANNEL) CHECK

1.

Disconnect the accelerator pedal position sensor
connector.

2.

Measure resistance between terminal No.8 (sensor power
supply) and 7 (sensor earth) of the sensor connector.

Standard value: 3.5 – 6.5 k

Ω

3.

Measure resistance between terminal No.8 (sensor power
supply) and 6 (sensor output) of the connector.

Normal condition:

Depress the accelerator
pedal slowly.

Resistance value changes in
accordance with the
accelerator pedal
depression smoothly.

4.

If not within the standard value, or resistance value does
not change smoothly, replace the accelerator pedal position
sensor assembly.

NOTE
After replacement, adjust the accelerator pedal position
sensor. (Refer to P.13A-94.)

Equipment
side connector

Accelerator pedal
position sensor

Accelerator
pedal arm

Equipment
side connector

Accelerator pedal
position sensor

Accelerator
pedal arm

GDI – 

On-vehicle Service

13A-105

ACCELERATOR PEDAL POSITION SWITCH
CHECK

1.

Disconnect the accelerator pedal position sensor
connector.

2.

Check continuity between terminal No.4 (accelerator pedal
position switch) and 5 (sensor earth) of the connector.

Normal condition

Accelerator pedal

Continuity

Depressed

No continuity

Released

Continuity (0 

Ω

)

3.

If defective, replace the accelerator pedal position sensor
assembly.

NOTE
After replacement, adjust the accelerator pedal position
sensor. (Refer to P.13A-94.)

OXYGEN SENSOR CHECK

1.

Disconnect the oxygen sensor connector and connect the
special tool (test harness) to the connector on the oxygen
sensor side.

2.

Make sure that there is continuity (11 – 18 

Ω

 at 20

_

C)

between terminal 1 (red cip of special tool) and terminal
3 (blue clip of special tool) 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.

5.

Use a jumper wire to connect terminal 1 (red clip) of the
oxygen sensor connector to the battery (+) terminal and
terminal 3 (blue clip) to the battery (–) terminal.

Caution
Be very careful when connecting the jumper wire;
incorrect connection can damage the oxygen sensor.

6.

Connect a digital voltage meter between terminal 2 (black
clip) and terminal 4 (white clip).

Equipment
side connector

Accelerator pedal
position sensor

Accelerator
pedal arm

Equipment side connector

Oxygen sensor

Blue

Red

MD998464

Oxygen
sensor
equip-
ment side
connector

Jumper
wire

Black

Red

White

MD998464

Blue