Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 326

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-503

DIAGNOSIS

STEP 1. Check connector A-18X at starter relay 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 starter relay.
Refer to GROUP 16, Starting system

−

On-vehicle Service

−

Starter relay Check (

P.16-23

).

Q: Are there any abnormalities?

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

symptom is eliminated.

STEP 3. Check the power supply voltage at starter relay
connector A-18X.
(1) Disconnect the connector A-18X and measure at the

harness side.

(2) Turn the ignition switch to the "START" position.
(3) Measure the voltage between terminal 3, 4 and ground.

•

Voltage should be battery positive voltage.

(4) Turn the ignition switch to the "LOCK" (OFF) position.

Q: Is the voltage normal?

YES : Go to Step 4.
NO : Repair harness wire between ignition switch

connector C-87 terminal 5 and starter relay connector
A-18X terminal 3,4 because of open circuit. Then
confirm that the malfunction symptom is eliminated.

STEP 4. Check connector C-58 at ECM for damage.
Q: Is the connector in good condition?

YES : Go to Step 5.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection (

P.00E-2

). Then confirm that

the malfunction symptom is eliminated.

AK000356

CONNECTOR : A-18X

AB

AK000382AB

A-18X HARNESS
SIDE CONNECTOR

1

2

4

3

5

AK000357

CONNECTOR:C-58

AD

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-504

STEP 5. Check the power supply voltage at ECM connector
C-118.
(1) Disconnect the connector C-58 and measure at the harness

side.

(2) Turn the ignition switch to the "START" position.
(3) Measure the voltage between terminal 68 and ground.

•

Voltage should be battery positive voltage.

(4) Turn the ignition switch to the "LOCK" (OFF) position.

Q: Is the voltage normal?

YES : Go to Step 6.
NO : Repair harness wire between starter relay connector

A-18X terminal 2 and ECM connector C-58 terminal
68 because of open circuit. Then confirm that the
malfunction symptom is eliminated.

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.

AK000383AC

47 46 45

41

42

43

44

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

C-58 HARNESS
SIDE CONNECTOR

AK000312AF

CONNECTOR : C-02

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-505

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 the voltage normal?

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-18X terminal 1 and interlock switch connector C-02
terminal 2 because of open circuit. Then confirm that
the malfunction symptom is eliminated.

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 1 and ground.

•

Should be less than 2 ohm.

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 1 and ground because of
open circuit or harness damage. Then confirm that
the malfunction symptom is eliminated.

AK000384AB

C-02 HARNESS
SIDE CONNECTOR

2 1

AK000385AB

C-02 HARNESS
SIDE CONNECTOR

2 1

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-506

INSPECTION PROCEDURE 32: Ignition Switch-ST System and Park/Neutral Position Switch System.
<A/T>

AK0007198

7

10

5

3

1 2

4

6

9

4 5 6

1 2 3

8

BLA

CK-RED

BLA

CK-RED

BLA

CK-RED

ACC

C-87

R

IGNITION
SWITCH

IG2

IG1

ST

LOCK

5

POWERTRAIN
CONTROL
MODULE(PCM)

58

PARK/ NEUTRAL
POSITION
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<A/T>
(MU803781)

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48 49 50 51 52 53 54 55 56 57

46

45

44

58 59

60 61 62 63

64 65 66

47

41