Mitsubishi Galant (2004+). Manual — part 1206
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-517
STEP 3. Check the No. 5 cylinder injector resistance at
intermediate connector B-32.
(1) Disconnect the intermediate connector B-32.
(2) Measure the resistance between terminal No. 4 and No. 9.
• Resistance should be between 10.5 and 13.5 ohms.
Q: Is the measured resistance between 10.5 and 13.5
ohms?
YES : Go to Step 6.
NO : Go to Step 4.
STEP 4. Check the connector B-04 at No. 5 cylinder
injector for damage.
Remove the intake manifold.
Q: Is the harness connector in good condition?
YES : Go to Step 5.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 12.
AK303053
3
4
5
8
9
1
2
6
7
10
CONNECTOR: B-32
HARNESS CONNECTOR:
COMPONENT SIDE
AB
B-32 (B)
1
2 3
6
7 8
4 5
9 10
AK303113
B-32
INTERMEDIATE
CONNECTOR
AB
AK303114
M
1
2
CONNECTOR: B-04
AB
B-04 (GR)
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-518
STEP 5. Check the No.5 cylinder injector.
(1) Disconnect the No. 5 cylinder injector connector B-04.
(2) Measure the resistance between injector side connector
terminal No. 1 and No. 2.
Standard value: 10.5
− 13.5 ohms [at 20°C (68°F)]
Q: Is the resistance between 10.5 and 13.5 ohms [at 20
°C
(68
°F)]?
YES : Repair harness wire between intermediate connector
B-32 (terminal No. 9) and injector connector B-04
(terminal No. 1) and harness wire between No. 5
cylinder injector connector B-04 (terminal No. 2)
and intermediate connector B-32 (terminal No. 4)
because of open circuit or short circuit to ground
or harness damage.
Then go to Step 12.
NO : Replace the No. 5 cylinder injector. Then go to Step
12.
STEP 6. Measure the power supply voltage at intermediate
connector B-32.
(1) Disconnect the connector B-32 and measure at the female
connector side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal No. 9 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 8.
NO : Go to Step 7.
AK303114
M
1
2
CONNECTOR: B-04
AB
B-04 (GR)
HARNESS CONNECTOR:
COMPONENT SIDE
AK000559
2
1
INJECTOR SIDE
CONNECTOR
AB
AK303053
3
4
5
8
9
1
2
6
7
10
CONNECTOR: B-32
HARNESS CONNECTOR:
COMPONENT SIDE
AB
B-32 (B)
3
4
5
8
9
1
2
6
7
10
AK203172
B-32 HARNESS
CONNECTOR:
COMPONENT
SIDE
AB
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-519
STEP 7. Check harness connector B-17X at MFI relay for
damage.
Q: Is the connector in good condition?
YES : Repair harness wire between MFI relay connector
B-17X (terminal No. 4) and intermediate connector
B-32 (terminal No. 9) because of open circuit or short
circuit to ground. Then go to Step 12.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 12.
1
2
3
4
AK303017
CONNECTOR: B-17X
FRONT OF VEHICLE
B-17X
AB
HARNESS
CONNECTOR:
COMPONENT SIDE
RELAY BOX
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-520
STEP 8. Check for harness damage between MFI relay
connector B-17X (terminal No. 4) and intermediate
connector B-32 (terminal No. 9).
Q: Is the harness wire in good condition?
YES : Go to Step 9.
NO : Repair it. Then go to Step 12.
1
2
3
4
AK303017
CONNECTOR: B-17X
FRONT OF VEHICLE
B-17X
AB
HARNESS
CONNECTOR:
COMPONENT SIDE
RELAY BOX
AK303053
3
4
5
8
9
1
2
6
7
10
CONNECTOR: B-32
HARNESS CONNECTOR:
COMPONENT SIDE
AB
B-32 (B)
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