Mitsubishi Galant (2004+). Manual — part 914
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-473
STEP 1. Using scan tool MB991958, check actuator test
item 02: No. 2 Injector.
CAUTION
To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Start the engine and run at idle.
(3) Set scan tool MB991958 to the actuator testing mode for
item 02 No. 2 injector.
(4) Warm up the engine to normal operating temperature: 80
°C
to 95
°C (176°F to 203°F).
• The idle should become slightly rougher.
(5) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the actuator operating properly?
YES : It can be assumed that this malfunction is intermittent.
Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points
NO : Go to Step 2.
STEP 2. Check harness connector B-30 at No. 2 cylinder
injector 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
Connector Inspection
. Then go to Step 10.
AK303804AB
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
M
1
2
AK303846
B-30 (GR)
CONNECTOR: B-30
HARNESS CONNECTOR:
COMPONENT SIDE
AB
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-474
STEP 3. Check the No. 2 cylinder injector.
(1) Disconnect the No. 2 cylinder injector connector B-30.
(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 measured resistance between 10.5 and 13.5 ohms
[at 20
°C (68°F)]?
YES : Go to Step 4.
NO : Replace the No. 2 cylinder injector. Then go to Step
10.
STEP 4. Measure the power supply voltage at No. 2
cylinder injector connector.
(1) Disconnect connector B-30 and measure at the harness
side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal No. 1 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.
M
1
2
AK303846
B-30 (GR)
CONNECTOR: B-30
HARNESS CONNECTOR:
COMPONENT SIDE
AB
AK000559
2
1
INJECTOR SIDE
CONNECTOR
AB
M
1
2
AK303846
B-30 (GR)
CONNECTOR: B-30
HARNESS CONNECTOR:
COMPONENT SIDE
AB
AK000560
1
2
B-30 HARNESS
CONNECTOR:
COMPONENT SIDE
AO
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-475
STEP 5. Check harness connector B-17X at MFI relay for
damage.
Q: Is the harness connector in good condition?
YES : Repair harness wire between MFI relay connector
B-17X (terminal No. 4) and No. 2 cylinder injector
connector B-30 (terminal No. 1). Then go to Step
10.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 10.
STEP 6. Check for harness damage between MFI relay
connector B-17X (terminal No. 4) and No. 2 cylinder
injector connector B-30 (terminal No. 1).
Q: Is the harness wire in good condition?
YES : Go to Step 7.
NO : Repair it. Then go to Step 10.
AK303806
2
1
3
4
AB
CONNECTOR: B-17X
B-17X
RELAY BOX
TRIANGLE
MARK
HARNESS CONNECTOR:
COMPONENT SIDE
AK303806
2
1
3
4
AB
CONNECTOR: B-17X
B-17X
RELAY BOX
TRIANGLE
MARK
HARNESS CONNECTOR:
COMPONENT SIDE
M
1
2
AK303843
B-01 (GR)
CONNECTOR: B-01
AB
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-476
STEP 7. Check harness connector B-23 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
Connector Inspection
. Then go to Step 10.
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
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст