Mitsubishi Space Star. Manual - part 76

DIESEL FUEL – 

General Information

13D-3

FUEL INJECTION SYSTEM DIAGRAM



1 Air flow sensor



2 Intake air temper-

ature sensor



3 Camshaft position

sensor



4 Crank angle

sensor



5 Boost sensor



6 Engine coolant

temperature
sensor



7 Fuel pressure

sensor



8 EGR valve

position sensor



9 Fuel temperature

sensor



Power supply



Ignition switch –
IG



Accelerator pedal
position sensor
(1st channel)



Accelerator pedal
position sensor
(2nd channel)



Vehicle speed
sensor



A/C switch



Stop lamp switch



Clutch pedal
switch



Diagnostic control
terminal

1 Injector

2 Fuel pressure

regulator

3 EGR valve

4 Turbocharger

waste gate

5 Throttle valve

control solenoid

6 Glow plug



Main relay



Glow relay box



A/C relay



Additional heater
relay



Fan motor relay



Engine warning
lamp



Glow indicator
lamp



Overheat indicator
lamp



Diagnostic output
terminal

Engine-
ECU



2 Intake air

     temperature sensor



4 Crank angle sensor



3 Camshaft

      position
      sensor



6 Engine coolant temperature sensor



5 Boost

       sen-
sor



1 Air flow sensor



7 Fuel pressure sensor



8 EGR valve position sensor



9 Fuel temperature sensor

1 Injector

2 Fuel pressure

      regulator

3 EGR

     valve

4 Turbocharger waste

      gate solenoid

5 Throttle valve control solenoid

6 Glow plug

To fuel tank

From fuel tank

Fuel filter

High pressure
pump

Catalytic
converter

Catalytic converter

Turbocharger

To vacuum pump

Air cleaner

DIESEL FUEL – 

Service Specifications/Special Tools

13D-4

SERVICE SPECIFICATIONS

Items

Specifications

Intake air temperature sensor 
resistance k

Ω

at –30



C

24.0 – 27.2

resistance   k

Ω

at 20



C

2.35 – 2.55

at 100



C

0.180 – 0.186

Engine coolant temperature sensor
resistance k

Ω

at 25



C

2.14 – 2.36

resistance   k

Ω

at 80



C

0.27 – 0.29

Accelerator pedal position sensor (1st channel)
Resistance between terminals (3) and (5)

   Ω

Approx. 1,200

Accelerator pedal position sensor (2nd channel)
Resistance between terminals (2) and (6)

   Ω

Approx. 1,700

Injector coil resistance   

Ω 

(at 20



C)

Approx. 0.33

Fuel temperature sensor resistance   k

Ω

 (at 25



C)

2.05

Fuel pressure regulator   

Ω

 (at 20



C)

Approx. 5

Crank angle sensor resistance    

Ω

720 – 880

Throttle valve control solenoid coil resistance    

Ω 

(at 25



C)

43 – 49

SPECIAL TOOLS

Tool

Number

Name

Use

MB991502

MUT-

II

 sub

assembly



Reading diagnosis code



Checking the fuel injection system

MB990767

End yoke holder

Holding the fuel high pressure pump sprocket

MD998719

Crankshaft pulley
holder pin

DIESEL FUEL – 

Troubleshooting

13D-5

TROUBLESHOOTING

DIAGNOSIS TROUBLESHOOTING FLOW

Refer to ’99 SPACE STAR Workshop Manual (Pub. No.
CMXE99E1), GROUP 00 – How to Use Troubleshooting/In-
spection Service Points.

DIAGNOSIS FUNCTION

ENGINE WARNING LAMP (CHECK ENGINE LAMP)

If an abnormality occurs in any of the items related to the
electronic controlled injection system, the engine warning lamp
will illuminate.
If the lamp remains illuminated or if the lamp illuminates while
the engine is running, check the diagnosis code output.

NOTE
When the ignition switch is ON, the engine warning lamp
illuminates as checking of the engine warning lamp circuit
and the bulb, and then the warning lamp is extinguished after
a few seconds.

METHOD OF READING AND ERASING DIAGNOSIS
CODES

Refer to ’99 SPACE STAR Workshop Manual (Pub. No.
CMXE99E1), GROUP 00 – How to Use Troubleshooting/In-
spection Service Points.

INSPECTION USING MUT-

II

 DATA LIST AND

ACTUATOR TESTING

1.

Carry out inspection by means of the data list and the
actuator test function.
If there is an abnormality, check and repair the chassis
harnesses and components.

2.

After repairing, re-check using the MUT-

II

 and check that

the abnormal input and output have returned to normal
as a result of the repairs.

3.

Erase the diagnosis code memory.

4.

Remove the MUT-

II

.

5.

Start the engine again and carry out a road test to confirm
that the problem has disappeared.

Engine warning lamp
(Check engine lamp)

DIESEL FUEL – 

Troubleshooting

13D-6

FAIL-SAFE FUNCTION REFERENCE TABLE

Malfunctioning item

Control contents during malfunction

Crank angle sensor system

Engine cut-off

Camshaft position sensor system

Engine cut-off

Fuel pressure sensor system

Engine cut-off

Boost sensor system



Turbocharger waste gate control is stopped



EGR control is stopped

Air flow sensor system

EGR control is stopped

Engine coolant temperature sensor sys-
tem



The coolant temperature is regulated as specified



The radiator fan is driven

Intake air temperature sensor system

Thermoplunger control is stopped

EGR valve position sensor system

EGR control is stopped

Immobilizer system

The engine is immobilized. However, the engine is not cut-off while the
engine is running

EGR valve system



Turbocharger waste gate control is stopped



EGR control is stopped

Turbocharger waste gate solenoid system



Turbocharger waste gate control is stopped



EGR control is stopped

Fuel pressure regulator system

Engine cut-off

Fuel pressure system

Engine cut-off

Engine-ECU

Engine cut-off

Additional heater relay system

Thermoplunger control is stopped