Mitsubishi Eclipse. Manual — part 335

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-833

STEP 2. Measure the output voltage at ECM harness side
connector C-49 <M/T> or PCM harness side connector
C-50 <A/T>.
(1) Disconnect the connector C-49 <M/T> or C-50 <A/T> and

measure at the harness side.

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

AK300413

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14

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19

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22

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21

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26

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10

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13

CONNECTOR: C-49 <M/T>

C-49 (G)

AB

HARNESS CONNECTOR:
COMPONENT SIDE

AK300414

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30

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35

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10

C-50 (GR)

CONNECTOR: C-50 <A/T>

AB

HARNESS CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-834

(3) Measure the voltage between terminal No. 21 <M/T> or No.

18 <A/T> and ground.

• Voltage should be between 4.8 and 5.2 volts. (Fan

rotates at high speed.)

(4) Connect a jumper cable between terminal No. 21 <M/T> or

No. 18 <A/T> and ground.

• The fan should stop.

(5) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the voltage and fan condition normal?

YES : Replace the ECM or PCM. Then confirm that the

malfunction symptom is eliminated.

NO : Go to Step 3.

AK000400AI

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<M/T>

C-49 HARNESS
CONNECTOR:
COMPONENT SIDE

AK000401AK

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<A/T>

C-50 HARNESS
CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-835

STEP 3. Check for open circuit and short circuit to ground
and harness damage between fan controller A-30 (terminal
No. 2) and ECM connector C-49 (terminal No. 21) <M/T> or
PCM connector C-50 (terminal No. 18) <A/T>.

AK300451

1

2

3

CONNECTOR: A-30

AB

A-30 (GR)

HARNESS
CONNECTOR:
COMPONENT SIDE

AK300413

1

14

4

19

5

22

6

17

8

15

9

18

7

20

16

2

21

23

26

24

25

3

10

11

12

13

CONNECTOR: C-49 <M/T>

C-49 (G)

AB

HARNESS CONNECTOR:
COMPONENT SIDE

AK300414

2

3

4

5

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30

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35

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10

C-50 (GR)

CONNECTOR: C-50 <A/T>

AB

HARNESS CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-836

NOTE: Check harness after checking intermediate connector
C-07. If intermediate connector is damaged, repair or replace
them. Refer to GROUP 00E, Harness Connector Inspection

P.00E-2

. Then confirm that the malfunction symptom is elimi-

nated.
Q: Is the harness wire in good condition?

YES : Refer to GROUP 14

− Engine Cooling Diagnosis −

Symptom Chart

P.14-3

.

NO : Repair it. Then confirm that the malfunction symptom

is eliminated.

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