Mitsubishi Galant 9G. Manual — part 1183
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-1032
STEP 8. Check the right bank injector resistance at
intermediate connector B-32.
(1) Disconnect the intermediate connector B-32.
(2) Measure the resistance between each male connector side
terminal.
a. Measure the resistance between terminal No. 9 and No.
5 at No. 1 cylinder injector.
b. Measure the resistance between terminal No. 9 and No.
10 at No. 3 cylinder injector.
c. Measure the resistance between terminal No. 9 and No.
4 at No. 5 cylinder injector.
• Resistance should be between 10.5 and 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 11.
NO : Go to Step 9.
STEP 9. Check the right bank injector.
(1) Remove the intake manifold.
(2) Disconnect the right bank injector connector, which
deviates from the standard value at Step 7.
(3) 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 10.
NO : Replace the injector. Then confirm that the
malfunction symptom is eliminated.
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
AK203093
B-32
INTERMEDIATE
CONNECTOR
AB
AK303055
M
1
2
CONNECTOR: B-01, B-03, B-04
AB
B-01 (GR)
B-03 (GR)
B-04 (GR)
HARNESS CONNECTOR:
COMPONENT SIDE
AK000559
2
1
INJECTOR SIDE
CONNECTOR
AB
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-1033
STEP 10. Check harness connector B-03 or B-04 or B-01 at
right bank injector for damage.
(1) Check the injector connector, which deviates from the
standard value at Step 9.
Q: Is the harness connector in good condition?
YES : Repair harness wire between injector intermediate
connector and right bank injector connector because
of harness damage. Then confirm that the
malfunction symptom is eliminated.
NO : Repair or replace it. Refer to GROUP 00E, Harness
. Then confirm that the
malfunction symptom is eliminated.
STEP 11. Check harness connector B-32 at intermediate
connector for damage.
Q: Is the harness connector in good condition?
YES : Go to Step 12.
NO : Repair or replace it. Refer to GROUP 00E, Harness
. Then confirm that the
malfunction symptom is eliminated.
STEP 12. Check harness connector B-27, B-26, B-30 at left
bank injector for damage.
Q: Is the harness connector in good condition?
YES : Go to Step 13.
NO : Repair or replace it. Refer to GROUP 00E, Harness
.Then confirm that the
malfunction symptom is eliminated.
AK303055
M
1
2
CONNECTOR: B-01, B-03, B-04
AB
B-01 (GR)
B-03 (GR)
B-04 (GR)
HARNESS CONNECTOR:
COMPONENT SIDE
AK303053
3
4
5
8
9
1
2
6
7
10
CONNECTOR: B-32
HARNESS CONNECTOR:
COMPONENT SIDE
AB
B-32 (B)
AK303075
M
1
2
CONNECTOR: B-26, B-27, B-30
B-30 (GR)
B-27 (GR)
B-26 (GR)
HARNESS CONNECTOR:
COMPONENT SIDE
AB
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-1034
STEP 13. Check harness connector B-23 at PCM for
damage.
Q: Is the harness connector in good condition?
YES : Go to Step 14.
NO : Repair or replace it. Refer to GROUP 00E, Harness
. Then confirm that the
malfunction symptom is eliminated.
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) <3.8L ENGINE>
13B-1035
STEP 14. Check for harness damage between injector
connector and PCM connector.
a. Check the harness wire between injector connector
B-01 (terminal No. 2) and PCM connector B-23 (terminal
No. 153) at No. 1 cylinder injector.
b. Check the harness wire between injector connector
B-30 (terminal No. 2) and PCM connector B-23 (terminal
No. 146) at No. 2 cylinder injector.
c. Check the harness wire between injector connector
B-03 (terminal No. 2) and PCM connector B-23 (terminal
No. 140) at No. 3 cylinder injector.
d. Check the harness wire between injector connector
B-27 (terminal No. 2) and PCM connector B-23 (terminal
No. 139) at No. 4 cylinder injector.
e. Check the harness wire between injector connector
B-04 (terminal No. 2) and PCM connector B-23 (terminal
No. 133) at No. 5 cylinder injector.
f. Check the harness wire between injector connector
B-26 (terminal No. 2) and PCM connector B-23 (terminal
No. 127) at No. 6 cylinder injector.
Q: Is the harness wire in good condition?
YES : Check the following items, and repair or replace the
defective items.
a. Check the ignition coil and spark plugs.
b. Check if the injectors are clogged.
c. Check compression pressure.
d. Check fuel lines for clogging.
e. Check if the foreign materials (water,
kerosene, etc.) got into fuel.
f. Check the EGR valve.
Then confirm that the malfunction symptom is
eliminated.
NO : Repair it. Then confirm that the malfunction symptom
is eliminated.
INSPECTION PROCEDURE 7: Hard Starting
.
COMMENT
• In cases such as the above, the cause is usually
either weak spark, improper air-fuel mixture or
low compression.
.
TROUBLESHOOTING HINTS (The most
likely causes for this case:)
• Malfunction of the ignition system.
• Malfunction of the injector system.
• Poor fuel quality. (Contamination)
• Poor compression.
• Dirtiness around throttle valve.
• Malfunction of the EGR valve.
AK303235
M
1
2
AB
B-30 (GR)
B-04 (GR)
B-01 (GR)
B-27 (GR)
B-03 (GR)
B-26 (GR)
CONNECTOR: B-01, B-03, B-04, B-26,B-27,
B-30
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
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст