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Mitsubishi Outlander (2013+). Manual - part 326

Tester
connectio
n
terminal

Battery voltage

Normal
condition

Connector
"C"
terminal
No. 1

−

Connector
"D"
terminal
No. 2

No voltage

No
continuity

Voltage (Connect the
positive (+) terminal of
battery to terminal No. 2
of connector "A" and the
negative (

−) terminal of

battery to terminal No. 11
of connector "B".)

Continuity
(2

Ω or less)

ON-VEHICLE SERVICE

MULTIPOINT FUEL INJECTION (MPI)

13A-185

THROTTLE VALVE CONTROL SERVO
RELAY CONTINUITY CHECK

M1131053501074

AKC0012

Relay box

Relay equipment
side connector

Throttle valve control
servo relay

Tester
connecti
on
terminal

Battery voltage

Normal
condition

− 2

No voltage

Continuity

− 4

No voltage

No
continuity

Voltage (Connect the
positive (+) terminal of
battery to terminal No. 2
and the negative (

−)

terminal of battery to
terminal No. 1.)

Continuity
(2

Ω or less)

INTAKE AIR TEMPERATURE SENSOR
CHECK

M1131002802359

AKC00017

Air flow sensor
(with built-in intake air
temperature sensor)

Equipment side
connector

1. Disconnect the air flow sensor connector.

2. Measure the resistance between terminal No. 4

and No. 5 of the air flow sensor connector.

Standard value:

− 18 kΩ (at −20°C)

5.3

− 6.7 kΩ (at 0°C)

2.3

− 3.0 kΩ (at 20°C)

0.30

− 0.45 kΩ (at 80°C)

3. Remove the air flow sensor.

AKB00839

Intake air temperature sensor

4. Measure resistance while heating the sensor

using a hair drier.

Normal condition:

Temperature (

°C)

Resistance (k

Ω)

Higher

Smaller

5. If the value deviates from the standard value or

the resistance remains unchanged, replace the air
flow sensor assembly.

6. Install the air flow sensor and tighten it to the

specified torque.

Tightening torque: 1.5

± 0.3 N⋅m

ON-VEHICLE SERVICE

MULTIPOINT FUEL INJECTION (MPI)

13A-186

ENGINE COOLANT TEMPERATURE
SENSOR CHECK

M1131003102364

AKC00018

1 2

Equipment side
connector

Engine coolant
temperature sensor

Radiator upper hose

AK503116 AC

MB992042

1. Remove the engine coolant temperature sensor

using the special tool engine coolant temperature
sensor wrench (MB992042).

AKX01622AD

2. With temperature sensing portion of the engine

coolant temperature sensor immersed in the hot
water, measure the resistance between connector
terminals.

Standard value:

− 17 kΩ (at −20°C)

5.1

− 6.5 kΩ (at 0°C)

2.1

− 2.7 kΩ (at 20°C)

0.9

− 1.3 kΩ (at 40°C)

0.48

− 0.68 kΩ (at 60°C)

0.26

− 0.36 kΩ (at 80°C)

3. If the resistance deviates from the standard value

greatly, replace the sensor.

AKX01623AD

4. Apply the sealant over the screw sections on the

engine coolant temperature sensor.

Specified sealant: LOCTITE 262, Three bond
1324N or equivalent

5. With the special tool engine coolant temperature

sensor wrench (MB992042) tighten the engine
coolant temperature sensor to the specified
torque.

Tightening torque: 30

± 9 N⋅m

OXYGEN SENSOR CHECK

M1131005003946

Oxygen sensor (front)

AKC00015

Oxygen sensor
(front) connector

Oxygen sensor (front)

Equipment side
connector

Exhaust manifold

1. Disconnect the oxygen sensor connector and

connect the special tool test harness (MB991658)
to the connector on the oxygen sensor side.

AK502625

MB991658

Oxygen sensor
equipment
side connector

AK502626

MB991658

Oxygen sensor
equipment
side connector

ON-VEHICLE SERVICE

MULTIPOINT FUEL INJECTION (MPI)

13A-187

2. Measure the resistance between terminal No. 1

and No. 3 of the oxygen sensor connector.

Standard value: 4.5

− 8.0 Ω (at 20°C)

3. If the resistance deviates from the standard value,

replace the oxygen sensor.

4. Warm up the engine until the engine coolant

temperature is 80

°C or higher.

5. Perform a racing for 5 minutes or more with the

engine speed of 2,000 r/min.

6. Connect the digital voltmeter between terminal

No. 2 and No. 4.

7. While repeatedly racing the engine, measure the

oxygen sensor output voltage.

Standard value:

Engine

Oxygen
sensor
output
voltage

Remarks

When racing
the engine

0.6

− 1.0 V

If you make the
air-fuel ratio rich by
racing the engine
repeatedly, a
normal oxygen
sensor will output a
voltage of 0.6

− 1.0

CAUTION

• Be very careful when connecting the jumper

wire, or incorrect connection can damage the
oxygen sensor.

• Exercise sufficient care so as not to apply

voltage exceeding 8 V onto the oxygen sensor
heater; otherwise the heater may be dam-
aged.

NOTE: If the temperature of sensing area does
not reach the high temperature (of approximately
400

C or more) even though the oxygen sensor is

normal, the output voltage would be possibly low
in spite of the rich air-fuel ratio.
Therefore, if the output voltage is low, use a
jumper wire to connect the terminal No. 1 and No.
3 of the oxygen sensor with the (+) and (

−

) termi-

nals of 8 V power supply respectively, then check
the voltage again.

8. If the voltage deviates from the standard value,

replace the oxygen sensor.

NOTE: For removal and installation of the oxygen
sensor, refer to GROUP 15

−

Exhaust Pipe and

Main Muffler

−

Removal and Installation .

Oxygen Sensor (rear)

CAUTION

Drive test must be performed, while two persons
are onboard, in a place where a full-throttle accel-
erating drive can be attempted safely.

AKC00016

1 2
3 4

Oxygen sensor
(rear) connector

Oxygen sensor (rear)

Equipment side
connector

1. Disconnect the oxygen sensor connector and

connect the special tool test harness (MB991658)
to the connector on the oxygen sensor side.

AK502625

MB991658

Oxygen sensor
equipment
side connector

AK502626

MB991658

Oxygen sensor
equipment
side connector

ON-VEHICLE SERVICE

MULTIPOINT FUEL INJECTION (MPI)

13A-188

2. Measure the resistance between terminal No. 1

and No. 2 of the oxygen sensor connector.

Standard value: 4.5

− 8.0 Ω (at 20°C)

3. If the resistance deviates from the standard value,

replace the oxygen sensor.

4. Warm up the engine until the engine coolant

temperature is 80

°C or higher.

5. Drive at 50 km/h or more for 10 minutes.

6. Connect the digital voltmeter between terminal

No. 3 and No. 4.

7. Measure the output voltage of the oxygen sensor

under the following driving.

• Transmission: 2nd

• Drive with wide open throttle

• Engine: 3,500 r/min or more

Standard value:

Oxygen sensor output
voltage

Remarks

0.6

− 1.0 V

High load operation
makes air/fuel ratio
richer and normal
oxygen sensor also can
output voltage of 0.6

−

1.0 V

NOTE: If the temperature of sensing area does
not reach the high temperature (of approximately
400

C or more) even though the oxygen sensor is

normal, the output voltage would be possibly low
in spite of the rich air-fuel ratio.

NOTE: When the vehicle is driven with high loads,
the temperature of the sensing area of the oxygen
sensor is sufficiently high. Thus, it is not neces-
sary to apply the voltage to the heater.

8. If the voltage deviates from the standard value,

replace the oxygen sensor.

NOTE: For removal and installation of the oxygen
sensor, refer to GROUP 15

−

Exhaust Pipe and

Main Muffler

−

Removal and Installation .

INJECTOR CHECK

M1131005202981

CHECK THE OPERATION SOUND

AKC00021

Injector

Equipment
side
connector

CAUTION

Beware that, even if the injector to be checked is
not operating, the operation sound of other injec-
tors may be heard.

1. Use a stethoscope to listen to the operation sound

(ticks) from the injectors while the engine is idling
or cranking.

2. Verify that the operation sound increases with the

higher engine speed.

NOTE: If the operating sound cannot be heard,
inspect the injector actuation circuit.

MEASUREMENT OF RESISTANCE
BETWEEN TERMINALS

1. Disconnect the injector connector.

2. Measure the resistance between terminals.

Standard value: 10.5

− 13.5 Ω (at 20°C)

3. If the resistance is deviates from the standard

value, replace the injector.

CHECK THE INJECTION CONDITION

1. Release the residual pressure in the fuel pipe line

to prevent the fuel from running out. Reduce
pressurized fuel lines (Refer to

P.13A-181

Content .. 324 325 326 327 ..