Mitsubishi Space Star. Manual - part 35

GDI  – 

Troubleshooting

13A-67

Cord No. P1610 Immobilizer system

Probable cause

Range of Check



Ignition switch: ON

Set Conditions



Improper communication between the engine-ECU <M/T> or engine-A/T-ECU
<A/T> and the immobilizer-ECU



Open or short circuit, or loose connector contact



Malfunction of the immobilizer-ECU



Malfunction of the engine-ECU <M/T>



Malfunction of the engine-A/T-ECU <A/T>

NOTE
(1) If the registered ignition keys are close each other when starting the engine, radio interference may

cause this code to be displayed.

(2) This code may be displayed when registering the key ID code.

NG

Replace the engine-ECU <M/T> or
engine-A/T-ECU <A/T>.

Check the trouble symptoms.

NG

Replace the immobilizer-ECU.

OK

Check the trouble symptoms.

OK

Check the harness wire between the
immobilizer-ECU and the engine-ECU
<M/T> or engine-A/T-ECU <A/T>.

NG

Replace

Check the following connectors: 
B-19, B-36, B-87

NG

Repair

GDI  – 

Troubleshooting

13A-68

INSPECTION CHART FOR TROUBLE SYMPTOMS

Trouble symptom

Inspection
procedure
No.

Reference page

Communication
with MUT-

II

is

Communication with all systems is not possible.

1

13A-69

with MUT-

II

 is 

impossible.

Communication with engine-ECU only is not possible.

2

13A-71

Engine warning
lamp and 
related parts

The engine warning lamp does not illuminate right after the
ignition switch is turned to the ON position.

3

13A-70

related parts

The engine warning lamp remains illuminating and never goes
out.

4

13A-70

Starting

No initial combustion (starting impossible)

5

13A-71

Initial combustion but no complete combustion 
(starting impossible)

6

13A-73

Long time to start (improper starting)

Idling stability 
(Improper idling)

Unstable idling (Rough idling, hunting)

7

13A-74

(Improper idling)

Idling speed is high. (Improper idling speed)

8

13A-76

Idling speed is low. (Improper idling speed)

Idling stability 
(Engine stalls)

When the engine is cold, it stalls at idling. (Die out)

9

13A-77

(Engine stalls)

When the engine is hot, it stalls at idling. (Die out)

10

13A-78

The engine stalls when starting the car. (Pass out)

11

13A-80

The engine stalls when decelerating.

12

13A-81

Driving

Hesitation, sag or stumble

13

13A-82

Poor acceleration

Surge

The feeling of impact or vibration when accelerating

14

13A-83

The feeling of impact or vibration when decelerating

15

13A-84

Knocking

16

13A-84

Dieseling

17

13A-84

Too high CO and HC concentration when idling

18

13A-85

Low alternator output voltage (approx. 12.3 V)

19

13A-86

Engine idle speed is incorrect while the A/C is on.

20

13A-87

Fans (radiator fan, A/C condenser fan) are inoperative

21

13A-87

Clutch switch system malfunction <M/T>

22

13A-88

GDI ECO indi-
cator lamp sys-

GDI ECO indicator lamp does not illuminate.

23

13A-88

cator  lamp sys-
tem

GDI ECO indicator lamp remains illuminated and does not go off.

24

13A-89

GDI  – 

Troubleshooting

GDI  – 

Troubleshooting

13A-69

INSPECTION PROCEDURE FOR TROUBLE SYMPTOMS

INSPECTION PROCEDURE 1

Communication with MUT-

II

 is not possible.

(Communication with all systems is not possible.)

Probable cause

The cause is probably a defect in the power supply system (including earth) for
the diagnosis line.



Malfunction of the connector



Malfunction of the harness wire



Malfunction of MUT-

II

Measure at the diagnostic connector
(16-pin) B-35.



Voltage between 16 and earth
OK: System voltage

NG

Check the following connectors:
B-75, B-81

NG

Repair

OK

Check trouble symptom.

NG

Check the harness wire between the
power supply and diagnostic connector
(16-pin), and repair if necessary.

OK

Measure at the diagnostic connector
(16-pin) B-35.



Continuity between 4 and earth



Continuity between 5 and earth
OK: Continuity

NG

Check the harness wire between the
diagnostic connector (16-pin) and
earth, and repair if necessary.

OK

Replace the MUT-

II

.

INSPECTION PROCEDURE 2

MUT-

II

 communication with engine-ECU (engine-

A/T-ECU) is impossible.

Probable cause

One of the following causes may be suspected.



No power supply to engine-ECU <M/T> or engine-A/T-ECU <A/T>.



Defective earth circuit of engine-ECU <M/T> or engine-A/T-ECU <A/T>.



Defective engine-ECU <M/T> or engine-A/T-ECU <A/T>.



Improper communication line between engine-ECU <M/T> or engine-A/T-ECU
<A/T> and MUT-

II



Malfunction of engine-ECU <M/T> or engine-A/T-ECU
<A/T> power supply circuit



Malfunction of engine-ECU <M/T> or engine-A/T-ECU
<A/T>



Open circuit between the engine-ECU <M/T> or
engine-A/T-ECU <A/T> and diagnosis connector

NG

Check the harness wire between engine-ECU <M/T> or engine-
A/T-ECU <A/T> and diagnosis connector.

NG

Repair

OK

Check trouble symptom.

Check the following connectors:
B-87<M/T>, B-86<A/T>, B-09, B-35, B-60X, B-61X

NG

Repair

OK

Check the engine-ECU (engine-A/T-ECU) power supply and earth
circuit system. 
(Refer to P.13A-90, INSPECTION PROCEDURE 25.)

NOTE
On vehicles with multi center display, if a malfunction cannot be resolved after the procedure above, check the multi
center display and replace if necessary. (Refer to GROUP 54 – Multi Center display.)

GDI  – 

Troubleshooting

13A-70

INSPECTION PROCEDURE 3

The engine warning lamp does not illuminate right after
the ignition switch is turned to the ON position.

Probable cause

Because there is a burnt-out bulb, the engine-ECU <M/T> or engine-A/T-ECU <A/T>
causes the engine warning lamp to illuminate for five seconds immediately after
the ignition switch is turned to ON. If the engine warning lamp does not illuminate
immediately after the ignition switch is turned to ON, one of the malfunctions listed
at right has probably occurred.



Burnt-out bulb



Defective warning lamp circuit



Malfunction of the engine-ECU <M/T>



Malfunction of the engine-A/T-ECU <A/T>

MUT-

II

 Data list

16 engine-ECU (engine-A/T-ECU) power supply voltage (Refer
to P.13A-99.)

NG

Check the engine-ECU (engine-A/T-ECU) power supply and earth
circuit system.
(Refer to P.13A-90, INSPECTION PROCEDURE 25.)

OK

Measure at the engine-ECU connector B-84 <M/T> or engine-
A/T-ECU connector B-84 <A/T>.



Disconnect the connector, and measure at the harness side.



Earth the terminal No. 31 <M/T> or 22 <M/T>.
OK: The engine warning lamp illuminates.

OK

Check the following
connector: B-84 

NG

Repair

OK

Check trouble symptom.

NG

Replace the engine-ECU <M/T> or engine-A/T-ECU <A/T>.

NG

Check a burnt-out bulb.

NG

Replace

OK

Measure at the combination meter connector B-01.



Disconnect the connector, and measure at the harness side.



Voltage between 49 and earth (Ignition switch: ON)
OK: System voltage

NG

Check the engine warning lamp power supply circuit, and repair
if necessary.

OK

Check the following connectors:
B-02, B-19, B-84

NG

Repair

OK

Check trouble symptom.

NG

Check the harness wire between combination meter and engine-
ECU <M/T> or engine-A/T-ECU <A/T>, and repair if necessary.

INSPECTION PROCEDURE 4

The engine warning lamp remains illuminating and never
goes out.

Probable cause

In cases such as the above, the cause is probably that the engine-ECU <M/T>
or engine-A/T-ECU <A/T> is detecting a problem in a sensor or actuator, or that
one of the malfunctions listed at right has occurred.



Short-circuit between the engine warning lamp and
engine-ECU



Malfunction of the engine-ECU <M/T>



Malfunction of the engine-A/T-ECU <A/T>

MUT-

II

 Self-Diag code

Are diagnosis codes displayed?

Yes

Refer to P.13A-12, INSPECTION CHART FOR DIAGNOSIS
CODES.

No

Measure at the combination meter connector B-02.



Disconnect the connector, and measure at the harness side.



Disconnect the engine-ECU connector <M/T> or
engine-A/T-ECU connector <A/T>



Continuity between 4 and earth
OK: No continuity

NG

Check the harness wire between combination meter and engine-
ECU <M/T> or engine-A/T-ECU <A/T> connector, and repair if
necessary.

OK

Replace the engine-ECU <M/T> or engine-A/T-ECU <A/T>.