Mitsubishi Galant 9G. Manual — part 1101
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-704
STEP 2. Check harness connector F-08 at the evaporative
emission ventilation solenoid for damage.
Q: Is the harness connector in good condition?
YES : Go to Step 3.
NO : Repair or replace it. Refer to GROUP 00E, Harness
. Then go to Step 12.
STEP 3. Check the evaporative emission ventilation
solenoid.
(1) Disconnect the evaporative emission ventilation solenoid
connector F-08.
(2) Measure the resistance between evaporative emission
ventilation solenoid side connector terminal No. 1 and No.
2.
Standard value: 17
− 21 ohms [at 20°C (68°F)]
Q: Is the measured resistance between 17 and 21 ohms [at
20
°C (68°F)]?
YES : Go to Step 4.
NO : Replace it. Then go to Step 12.
1
2
AK303150
CONNECTOR: F-08
AB
EVAPORATIVE
EMISSION
VENTILATION
SOLENOID
EVAPORATIVE
EMISSION
CANISTER
F-08 (B)
HARNESS
CONNECTOR:
COMPONENT SIDE
1
2
AK303150
CONNECTOR: F-08
AB
EVAPORATIVE
EMISSION
VENTILATION
SOLENOID
EVAPORATIVE
EMISSION
CANISTER
F-08 (B)
HARNESS
CONNECTOR:
COMPONENT SIDE
1 2
AK202969
EVAPORATIVE EMISSION
VENTILATION SOLENOID
CONNECTOR
AB
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-705
STEP 4. Measure the power supply voltage at evaporative
emission ventilation solenoid harness side connector
F-08.
(1) Disconnect the connector F-08 and measure at the harness
side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal No. 2 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 6.
NO : Go to Step 5.
STEP 5. Check harness connector B-17X at MFI relay for
damage.
Q: Is the harness connector in good condition?
YES : Check connectors A-13 and C-25 at intermediate
connector for damage, and repair or replace as
required. Refer to GROUP 00E, Harness Connector
Inspection
. If intermediate connectors are in
good condition, repair harness wire between MFI
relay connector B-17X (terminal No. 4) and
evaporative emission ventilation solenoid connector
F-08 (terminal No. 2) because of open circuit or short
circuit to ground. Then go to Step 12.
NO : Repair or replace it. Refer to GROUP 00E, Harness
. Then go to Step 12.
1
2
AK303150
CONNECTOR: F-08
AB
EVAPORATIVE
EMISSION
VENTILATION
SOLENOID
EVAPORATIVE
EMISSION
CANISTER
F-08 (B)
HARNESS
CONNECTOR:
COMPONENT SIDE
1
2
AK303152
F-08 HARNESS
CONNECTOR:
COMPONENT SIDE
AB
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-706
STEP 6. Measure the power supply voltage at PCM
connector B-19 by using power plant ECU check harness
special tool MB991923.
(1) Disconnect the all PCM connectors and connect power
plant ECU check harness special tool MB991923 between
the separated connectors.
(2) Turn the ignition switch to the "ON" position.
AK303153
4 3 2 1
7 6 5
9 8
11 10
14 13 12
18 17 16 15
CONNECTOR: B-19
PCM
AB
AIR CLEANER
HARNESS CONNECTOR:
COMPONENT SIDE
B-19 (B)
AK202974
4 3 2 1
7 6 5
9 8
11 10
14 13 12
18 17 16 15
AB
POWER PLANT ECU
CHECK HARNESS CONNECTOR
MB991923
PCM
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-707
(3) Measure the voltage between terminal No. 2 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 9.
NO : Go to Step 7.
STEP 7. Check harness connector B-19 at PCM for
damage.
Q: Is the harness connector in good condition?
YES : Go to Step 8.
NO : Repair or replace it. Refer to GROUP 00E, Harness
. Then go to Step 12.
4 3 2 1
7 6 5
9 8
11 10
14 13 12
18 17 16 15
AK202975AB
POWER PLANT ECU
CHECK HARNESS
CONNECTOR
AK303153
4 3 2 1
7 6 5
9 8
11 10
14 13 12
18 17 16 15
CONNECTOR: B-19
PCM
AB
AIR CLEANER
HARNESS CONNECTOR:
COMPONENT SIDE
B-19 (B)
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