Mitsubishi Eclipse. Manual — part 282

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-621

STEP 11. Measure the sensor supply voltage at vehicle
speed sensor harness side connector B-39.
(1) Disconnect the vehicle speed sensor connector B-39 and

measure at the harness side.

(2) Disconnect the combination meter connector and

auto-cruise control-ECU connector.

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

(4) Measure the voltage between terminal No. 3 and ground.

• Voltage should be between 4.8 and 5.2 volts.

(5) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage between 4.8 and 5.2 volts?

YES : Go to Step 12.
NO : Check connector B-36 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 vehicle speed
sensor connector B-39 (terminal No. 3) and ECM
connector C-60 (terminal No. 86) because of short
circuit to ground or harness damage. Then go to Step
17.

STEP 12. Check the vehicle speed sensor.
Refer to GROUP 54A, Combination Metre

− Inspection − Vehi-

cle Speed Sensor Check

P.54A-113

.

Q: Is the vehicle speed sensor normal?

YES : Go to Step 13.
NO : Replace the vehicle speed sensor. Then go to Step

17.

STEP 13. Check connector C-60 at ECM for damage.
Q: Is the connector in good condition?

YES : Go to Step 14.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 17.

AK300425

1

2

3

B-39 (B)

AB

CONNECTOR: B-39

HARNESS CONNECTOR:
COMPONENT SIDE

AKX01427

3 2 1

B-39 HARNESS
CONNECTOR:
COMPONENT SIDE

AU

AK300415

82

78

8180

89

90

91

92

79

87

71

74 73 72

76 75

77

85

88

83

84

86

CONNECTOR: C-60 <M/T>

AB

C-60 (G)

HARNESS CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-622

STEP 14. Check for harness damage between ignition
switch connector C-87 (terminal No. 2) and vehicle speed
sensor connector B-39 (terminal No. 1).

NOTE: Check harness after checking intermediate connectors
B-36, C-28, C-78, B-112 and C-111. If intermediate connectors
are damaged, repair or replace them. Refer to GROUP 00E,
Harness Connector Inspection

P.00E-2

. Then go to Step 17.

Q: Is the harness wire in good condition?

YES : Go to Step 15.
NO : Repair it. Then go to Step 17.

AK300738

1

2

3

4

5

6

CONNECTOR: C-87

AB

HARNESS CONNECTOR:
COMPONENT SIDE

C-87

AK300425

1

2

3

B-39 (B)

AB

CONNECTOR: B-39

HARNESS CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-623

STEP 15. Check for harness damage between vehicle
speed sensor connector B-39 (terminal No. 3) and ECM
connector C-60 (terminal No. 86).

NOTE: Check harness after checking intermediate connector
B-36. If intermediate connector is damaged, repair or replace
them. Refer to GROUP 00E, Harness Connector Inspection

P.00E-2

. Then go to Step 17.

Q: Is the harness wire in good condition?

YES : Go to Step 16.
NO : Repair it. Then go to Step 17.

STEP 16. Check for harness damage between vehicle
speed sensor connector B-39 (terminal No. 2) and ground.

AK300425

1

2

3

B-39 (B)

AB

CONNECTOR: B-39

HARNESS CONNECTOR:
COMPONENT SIDE

AK300415

82

78

8180

89

90

91

92

79

87

71

74 73 72

76 75

77

85

88

83

84

86

CONNECTOR: C-60 <M/T>

AB

C-60 (G)

HARNESS CONNECTOR:
COMPONENT SIDE

AK300425

1

2

3

B-39 (B)

AB

CONNECTOR: B-39

HARNESS CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-624

NOTE: Check harness after checking intermediate connector
B-36. If intermediate connector is damaged, repair or replace
them. Refer to GROUP 00E, Harness Connector Inspection

P.00E-2

. Then go to Step 17.

Q: Is the harness wire in good condition?

YES : Check for harness wire between vehicle speed

sensor connector B-39 (terminal No. 3) and other
system because of short circuit to ground. Then go to
Step 17.

NO : Repair it. Then go to Step 17.

STEP 17. Using scan tool MB991958, check data list item
24: Vehicle Speed Sensor.

CAUTION

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

24, Vehicle Speed Sensor.

• Check that the speedometer and MB991958 display

speed match when traveling at a vehicle speed of 40
km/h (25 mph).

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

YES : The inspection is complete.
NO : Retry the troubleshooting.

AK300810

AB

MB991911

16-PIN

MB991827

MB991824