Mitsubishi Eclipse. Manual - part 626

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-1047

STEP 6. Check connector C-02 at interlock switch for 
damage.
Q: Is the connector in good condition?

YES : Go to Step 7.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then confirm that the 

malfunction symptom is eliminated.

STEP 7. Check the interlock switch.
Refer to GROUP 21A, On-vehicle Service 

− Interlock switch 

check and adjustment 

P.21A-9

.

Q: Are there any abnormalities?

YES : Go to Step 8.
NO :  Repair or replace it. Then confirm that the malfunction 

symptom is eliminated.

STEP 8. Check the power supply voltage at interlock 
switch connector C-02.
(1) Disconnect the connector C-02 and measure at the harness 

side.

(2) Turn the ignition switch to the "START" position.

(3) Measure the voltage between terminal 2 and ground.

• Voltage should be battery positive voltage.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is battery positive voltage (approximately 12 volts) 

present?
YES : Go to Step 9.
NO :  Check connector C-07 at intermediate connector for 

damage, and repair or replace as required. Refer to 
GROUP 00E, Harness Connector Inspection 

P.00E-2

. If intermediate connectors is in good 

condition, repair harness wire between starter relay 
connector A-13X (terminal No. 1) and interlock switch 
connector C-02 (terminal No. 2) because of open 
circuit. Then confirm that the malfunction symptom is 
eliminated.

AK300744

1

2

CONNECTOR: C-02

AB

C-02

HARNESS CONNECTOR:
COMPONENT SIDE

AK300744

1

2

CONNECTOR: C-02

AB

C-02

HARNESS CONNECTOR:
COMPONENT SIDE

AK000384AF

C-02 HERNESS 
CONNECTOR: 
COMPONENT SIDE

2 1

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-1048

STEP 9. Check the continuity at interlock switch harness 
side connector C-02.
(1) Disconnect the connector C-02 and measure at the harness 

side.

(2) Check for the continuity between terminal No. 1 and 

ground.

• Should be less than 2 ohms.

Q: Is the continuity normal?

YES : Replace the ECM. Then confirm that the malfunction 

symptom is eliminated.

NO :  Repair harness wire between interlock switch 

connector C-02 (terminal No. 1) and ground because 
of open circuit or harness damage. Then confirm that 
the malfunction symptom is eliminated.

AK300744

1

2

CONNECTOR: C-02

AB

C-02

HARNESS CONNECTOR:
COMPONENT SIDE

AK000385

AF

C-02 HERNESS 
CONNECTOR: 
COMPONENT SIDE

2 1

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-1049

INSPECTION PROCEDURE 32: Ignition Switch 

− ST System and Transmission Range Switch System. 

<A/T>

AK301823

7

10

5

3

1 2

4

6

9

4 5 6

1 2 3

8

BLA

C

K-RED

BLA

CK-RED

BLA

CK-RED

ACC

C-87

R

IGNITION
SWITCH

IG2

IG1

ST

LOCK

5

POWERTRAIN
CONTROL
MODULE (PCM)

58

TRANSMISSION
RANGE SWITCH

     B-41
MU802355

N

P

10

9

16

C-28

7 8

5

3 4

35

34

10 11 12

2122 23 24

13 14 15

25 26 27

16

28

17

18 19 20

29

30 31

32 33

36 37

38

9

1 2

6

C-55

(MU803781)

42 43
48 49 50 51 52 53 54 55 56 57

46

45

44

58 59

60 61 62 63

64 65 66

47

41

Ignition Switch-ST and Transmission Range Switch Circuit

AK300068

TRANSMISSION
RANGE SWITCH

AC

CONNECTOR: B-41

B-41 (B)

AK300119

CONNECTOR: C-28

AB

C-28

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-1050

.

COMMENT

• If the selector lever is moved to "P" or "N" range 

and the ignition switch is turned to "START" posi-
tion, battery positive voltage is supplied to PCM 
(terminal No. 58) through the ignition switch and 
transmission range switch. Because of this, the 
PCM detects that the engine is cranking. 

• The transmission range switch detects the trans-

mission range (P, N or other ranges) and con-
verts it to a voltage signal (high or low). Then the 
transmission range switch sends that signal to 
the PCM. 

.

TROUBLESHOOTING HINTS (The most likely 
caused for this code to be set are: )

• Malfunction of the ignition switch.

• Malfunction of the transmission range switch.

• Improper connector contact, open circuit or 

short-circuit in the harness wire.

• Malfunction of the PCM.

DIAGNOSIS

STEP 1. Check connector B-41 at transmission range 
switch for damage.
Q: Is the connector in good condition?

YES : Go to Step 2.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then confirm that the 

malfunction symptom is eliminated.

STEP 2. Check the transmission range switch.
Refer to GROUP 23A, On-vehicle Service 

− Essential Service − 

Transmission range switch continuity check 

P.23A-408

.

Q: Are there any abnormalities?

YES : Go to Step 3.
NO :  Repair or replace it. Then confirm that the malfunction 

symptom is eliminated.

AK300116

CONNECTOR: C-87

AB

C-87

AK300244

CONNECTOR: C-55 <A/T>

AG

PCM

C-55 (GR)

AK300426

8

9

3

4

5

1

2

6

7

10

AB

CONNECTOR: B-41

B-41 (B)

HARNESS 
CONNECTOR:
COMPONENT SIDE