Mitsubishi Galant 9G. Manual — part 788

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-594

STEP 8. Check harness connector B-23 at PCM for
damage.
Q: Is the harness connector in good condition?

YES : Go to Step 9.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 12.

127 126 125 124 123 122 121

133 132 131 130 129 128

140 139 138 137 136 135 134

146 145 144 143 142 141

153 152 151 150 149 148 147

AK303058

HARNESS CONNECTOR:
COMPONENT SIDE

CONNECTOR: B-23

B-23

PCM

AB

AIR CLEANER

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-595

STEP 9. Check the EGR valve operation using special tool
MB991658.
(1) Remove the EGR valve.

(2) Connect special tool MB991658 to the EGR valve. (All

terminals should be connected.)

(3) Use the jumper wires to connect terminal No. 5 of the EGR

valve connector to the positive battery terminal.

(4) Check to ensure that the motor operates when the terminal

No. 1 and No. 3 of the EGR valve connector are
respectively connected to the negative battery terminal
using a jumper wire.

• Vibration should be present at each application of volt-

age to test clip combination.

(5) Then, use jumper wires to connect the terminal No. 2 of the

EGR valve connector to the positive battery terminal.

(6) Check to ensure that the motor operates when terminal No.

4 and No. 6 of the EGR valve connector are respectively
connected to the negative battery terminal using a jumper
wire.

• Vibration should be present at each application of volt-

age to test clip combination.

(7) Reinstall the EGR valve, using a new gasket, and tighten to

the specified torque.

Tighten torque: 24

± 3 N⋅m [17 ± 3 ft⋅Ib]

Q: Is the EGR valve operating properly?

YES : Go to Step 10.
NO : Replace the EGR valve. Then go to Step 12.

AK303866

1

2

3

4

5

6

AB

CONNECTOR: B-105

B-105 (GR)

HARNESS CONNECTOR:
COMPONENT SIDE

AK203699

+

-

AB

BATTERY

MB991658

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-596

STEP 10. Check for harness damage between MFI relay
connector B-17X (terminal No. 4) and EGR valve connector
B-105 (terminal No. 2, No. 5).
Q: Is the harness wire in good condition?

YES : Go to Step 11.
NO : Repair it. Then go to Step 12.

AK303806

2

1

3

4

AB

CONNECTOR: B-17X

B-17X

RELAY BOX
TRIANGLE
MARK

HARNESS CONNECTOR:
COMPONENT SIDE

AK303866

1

2

3

4

5

6

AB

CONNECTOR: B-105

B-105 (GR)

HARNESS CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-597

STEP 11. Check for harness damage between EGR valve
connector B-105 and PCM connector B-23.

a. EGR valve connector B-105 (terminal No. 1) and PCM con-

nector B-23 (terminal No. 142).

b. EGR valve connector B-105 (terminal No. 3) and PCM con-

nector B-23 (terminal No. 136).

c. EGR valve connector B-105 (terminal No. 4) and PCM con-

nector B-23 (terminal No. 130).

d. EGR valve connector B-105 (terminal No. 6) and PCM con-

nector B-23 (terminal No. 124).

Q: Is the harness wire in good condition?

YES : Replace the PCM. Then go to Step 12.
NO : Repair it. Then go to Step 12.

STEP 12. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to

Diagnostic Function

− OBD-II Drive Cycle − Procedure 6 −

Other Monitor

P.13A-6

.

(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0403 set?

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

AK303866

1

2

3

4

5

6

AB

CONNECTOR: B-105

B-105 (GR)

HARNESS CONNECTOR:
COMPONENT SIDE

127 126 125 124 123 122 121

133 132 131 130 129 128

140 139 138 137 136 135 134

146 145 144 143 142 141

153 152 151 150 149 148 147

AK303058

HARNESS CONNECTOR:
COMPONENT SIDE

CONNECTOR: B-23

B-23

PCM

AB

AIR CLEANER

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