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
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