Mitsubishi Eclipse. Manual - part 295

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-673

STEP 6. Check for harness damage between power 
steering pressure switch connector B-19 (terminal No. 1) 
and ECM connector C-53 (terminal No.37) or PCM 
connector C-54 (terminal No. 52).
Q: Is the harness wire in good condition?

YES : Replace the ECM or PCM. Then go to Step 7.
NO :  Repair it. Then go to Step 7.

AK300105

1

B-19

AB

CONNECTOR: B-19

HARNESS
CONNECTOR:
COMPONENT SIDE

AK300417

34 33 32

36 35

37

42

45

31

39

38

46

40

41

43

44

CONNECTOR: C-53 <M/T>

C-53 (G)

AB

HARNESS CONNECTOR:
COMPONENT SIDE

AK300412

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

C-54 (GR)

CONNECTOR: C-54 <A/T>

AB

HARNESS CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-674

STEP 7. Using scan tool MB991958, check data list item 27: 
Power Steering Pressure Switch.

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Start the engine and run at idle.
(3) Set scan tool MB991958 to the data reading mode for item 

27, Power Steering Pressure Switch.

• If the steering wheel is not turned while idling, "OFF" will 

be displayed.

• If the steering wheel is turned while idling, "ON" will be 

displayed.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the switch operating properly?

YES : The procedure is complete.
NO :  Repeat the troubleshooting.

AK300810

AB

MB991911

16-PIN

MB991827

MB991824 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-675

DTC P0622: Generator FR Terminal Circuit Malfunction

AK000672

4

3

2

6

3 4
7 8

1 2

5

1

YELL

OW

-

BL

ACK

YELL

OW

-

BL

ACK

ENGINE CONTROL
MODULE (ECM) <M/T>
OR
POWERTRAIN CONTROL
MODULE (PCM) <A/T>

GENERATOR

VOLTAGE
REGULATOR

     B-13
MU802749

     B-45
MU802046

41 <M/T>
54 <A/T>

C-54 <A/T>
(MU803781)

C-53 <M/T>
(MU803771)

3

4

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

34

33

32

36

35

37

42

45

31

39

38

46

40 41

43 44

Generator Circuit

AK300064

CONNECTOR: B-45

AB

B-45 (GR)

AK300067

CONNECTOR: B-13

AB

B-13 (B)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-676

.

CIRCUIT OPERATION

• The ECM (terminal No. 41) <M/T> or PCM (termi-

nal No. 54) <A/T> apply a battery positive voltage 
into the generator FR terminal No. 4 via resis-
tance inside the unit.

.

TECHNICAL DESCRIPTION

• When the generator field coils are controlled, the 

generator FR terminal inputs signal to the ECM 
<M/T> or PCM <A/T>.

• The ECM <M/T> or PCM <A/T> detects the gen-

erator output with the input signal, and controls 
the idle air control motor according to the genera-
tor output.

.

DTC SET CONDITIONS

Check Conditions

• Engine speed is higher than 50 r/min.

Judgement Criteria

• Input voltage from the generator FR terminal has 

continued to be approximately battery positive 
voltage for 20 seconds.

.

TROUBLESHOOTING HINTS (The most likely 
causes for this code to be set area: )

• Open or shorted generator FR terminal circuit, or 

harness damage, or connector damage.

• ECM failed. <M/T>

• PCM failed. <A/T>

AK300060

ECM

CONNECTOR: C-53 <M/T>

AH

C-53 (G)

AK300060AB

C-54 (GR)

PCM

CONNECTOR: C-54 <A/T>