Mitsubishi Eclipse. Manual - part 569

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-819

STEP 6. Check the power supply voltage at power steering 
pressure switch harness side connector B-19.
(1) Disconnect the connector B-19 and measure at the harness 

side.

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

(3) Measure the voltage between terminal No. 1 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 11.
NO :  Go to Step 7.

AK300437

1

CONNECTOR: B-19

AB

B-19

HARNESS CONNECTOR:
COMPONENT SIDE

AK000260AG

1

B-19 HERNESS 
CONNECTOR: 
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-820

STEP 7. Check the power supply voltage at ECM connector 
C-58 <M/T> or PCM connector C-55 <A/T> by backprobing.
(1) Do not disconnect the ECM connector C-58 <M/T> or PCM 

connector C-55 <A/T>.

(2) Disconnect the power steering pressure switch connector 

B-19.

(3) Turn the ignition switch to the "ON" position.

AK300462

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

CONNECTOR: C-55 <A/T>

C-55 (GR)

AB

HARNESS CONNECTOR:
COMPONENT SIDE

AK300748

65

43
50

42
49

41
48
60

61

64

46

47

58

59

67

68

45

56
66

52 51

44

53

62

54

63

57

55

CONNECTOR: C-58 <M/T>

AB

C-58 (GR)

HARNESS CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-821

(4) Measure the voltage between terminal No. 54 <M/T> or No. 

52 <A/T> and ground by backprobing.

• Voltage should be between battery positive voltage.

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

present?
YES : Go to Step 8.
NO :  Go to Step 9.

AK000261

4142 43 44
48

50 51

49

52 53 54 55 56 57 58 59

45 46 47

60 61

62 63 64

65

67 68

66

AE

C-58 HARNESS
CONNECTOR:
HARNESS SIDE

<M/T>

AKX01552

41

AH

C-55 HARNESS 
CONNECTOR:
HARNESS SIDE

42 43

44 45 46

47 48 49 50 51 52 53 54 55 56 57

58 59

60 61

63

64

66

<A/T>

65

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-822

STEP 8. Check connector C-58 at ECM <M/T> or connector 
C-55 at PCM <A/T> for damage.
Q: Is the connector in good condition?

YES : Check connector B-47 at intermediate connector for 

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

P.00E-2

. If intermediate connector is in good 

condition, repair harness wire between power 
steering pressure switch connector B-19 (terminal No. 
1) and ECM connector C-58 (terminal No. 54) <M/T> 
or PCM connector C-55 (terminal No. 52) <A/T> 
because of open circuit. Then go to Step 14.

NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 14.

AK300462

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

CONNECTOR: C-55 <A/T>

C-55 (GR)

AB

HARNESS CONNECTOR:
COMPONENT SIDE

AK300748

65

43
50

42
49

41
48
60

61

64

46

47

58

59

67

68

45

56
66

52 51

44

53

62

54

63

57

55

CONNECTOR: C-58 <M/T>

AB

C-58 (GR)

HARNESS CONNECTOR:
COMPONENT SIDE