Mitsubishi Space Star. Manual - part 88

DIESEL FUEL – 

On-vehicle Service

13D-51

ON-VEHICLE SERVICE

COMPONENT LOCATION

Name

Symbol

Name

Symbol

A/C relay

H

Engine-ECU (with barometric pressure sensor)

A

A/C switch

Q

Fuel pressure regulator

J

Accelerator pedal position sensor 
(1st and 2nd channel)

P

Fuel pressure sensor

D

Air flow sensor 
(with intake air temperature sensor)

G

Fuel temperature sensor

D

Boost sensor

M

Glow relay box

I

Camshaft position sensor

B

Injector

C

Clutch pedal switch

N

Main relay

R

Crank angle sensor

K

Stop lamp switch

N

Diagnosis connector

R

Throttle valve control solenoid

E

EGR valve

F

Turbocharger waste gate solenoid

E

EGR valve position sensor

F

Vehicle speed sensor

K

Engine coolant temperature sensor

L

D E F

H

I

J

K

L

M

N

O

P

Q

R

C

B

A

G

DIESEL FUEL – 

On-vehicle Service

13D-52

MAIN 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 the resistance between terminals 1 and 2.

Standard value: 

24.0  – 27.2 k

Ω

 (at –30



C)

2.35  – 2.55 k

Ω

 (at 20



C)

0.180  – 0.186 k

Ω

 (at 100



C)

ENGINE COOLANT TEMPERATURE SENSOR
CHECK

1.

Disconnect the engine coolant temperature sensor
connector.

2.

Measure the resistance between terminals 2 and 3.

Standard value: 2.14 – 2.36 k

Ω

 (at 25



C)

0.27 – 0.29 k

Ω

 (at 80



C)

ACCELERATOR PEDAL POSITION SENSOR 
(1st channel) CHECK

1.

Disconnect the accelerator pedal position sensor
connector.

2.

Measure the resistance between terminals 3 and 5.

Standard value: Approx. 1200 

Ω

3.

Measure the resistance between terminals 4 and 5.

Normal condition:

Depress the accelerator ped-
al slowly

Resistance value changes in
accordance with the accelera-
tor pedal depression smoothly

Main relay

Main relay
connector

Air flow sensor connector

Intake air temperature sensor
(Incorporated in air flow sensor connector)

Engine coolant temperature
sensor connector

Engine coolant
temperature sensor

Accelerator
padel

Accelerator
padel position
sensor connector

Accelerator padel position
sensor connector

DIESEL FUEL – 

On-vehicle Service

13D-53

ACCELERATOR PEDAL POSITION SENSOR
(2nd channel) CHECK

1.

Disconnect the accelerator pedal position sensor
connector.

2.

Measure the resistance between terminals 2 and 6.

Standard value: Approx. 1,700 

Ω

3.

Measure the resistance between terminals 1 and 6.

Normal condition:

Depress the accelerator ped-
al slowly

Resistance value changes in
accordance with the accelera-
tor pedal depression smoothly

INJECTOR CHECK

1.

Disconnect the injector connector.

2.

Measure the resistance between terminals.

Standard value: Approx. 0.33 

Ω

 (at 20



C)

FUEL TEMPERATURE SENSOR CHECK

1.

Disconnect the fuel temperature sensor connector.

2.

Measure the resistance between terminals.

Standard value: 2.05 k

Ω

 (at 25



C)

Accelerator
padel

Accelerator
padel position
sensor connector

Accelerator padel position
sensor connector

Injector connector

Injector

Fuel temperature
sensor connector

Fuel temperature sensor

DIESEL FUEL – 

On-vehicle Service

13D-54

FUEL PRESSURE REGULATOR CHECK

1.

Disconnect the fuel pressure regulator connector.

2.

Measure the resistance between terminals.

Standard value: Approx. 5 

Ω

 (at 20



C)

CRANK ANGLE SENSOR CHECK

1.

Disconnect the crank angle sensor connector.

2.

Measure the resistance between terminals.

Standard value: 720 – 880 

Ω

THROTTLE VALVE CONTROL SOLENOID CHECK

NOTE
When disconnecting the vacuum hose, always make a mark
so that it can be reconnected at original position.
1.

Disconnect the vacuum hose from the solenoid.

2.

Disconnect the solenoid connector.

3.

Connect a hand vacuum pump to the nipple (B) of the
solenoid (refer to the illustration at left).

4.

Check the airtightness by applying a vacuum with voltage
applied directly from the battery to the solenoid and without
applying voltage.

Battery voltage

Nipple A condition

Normal condition

Applied

Open

Vacuum leaks

Close

Vacuum main-
tained

Not applied

Open

Vacuum leaks

5.

Measure the resistance between the terminals.

Standard value: 43 – 49 

Ω 

(at 25



C)

THROTTLE ACTUATOR CHECK

1.

Disconnect the vacuum hose from the throttle actuator
and connect a hand vacuum pump to the throttle actuator
nipple.

2.

Check that the actuator rod moves smoothly when applying
vacuum gradually.

Fuel pressure
regulator connector

Fuel pressure regulator

Crank angle sensor
connector

Crank angle sensor

Throttle vlave control
solenoid connector

Throttle vlave
control solenoid

A

B

Throttle actuator