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