Mitsubishi Galant 9G. Manual — part 783
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-574
STEP 8. Check harness connector B-22 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
. Then go to Step 20.
AK303016
104
96
94
95
93 92 91
99 98 97
103 102 101 100
108 107 106 105
113 112 111 110 109
CONNECTOR: B-22
B-22 (B)
PCM
AB
HARNESS CONNECTOR:
COMPONENT SIDE
AIR CLEANER
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-575
STEP 9. Check for short circuit to ground between
camshaft position sensor connector B-106 (terminal No. 2)
and PCM connector B-22 (terminal No. 104).
Q: Is the harness wire in good condition?
YES : Replace the PCM. Then go to Step 20.
NO : Repair it. Then go to Step 20.
AK303863
1
2
3
AB
CONNECTOR: B-106
B-106 (B)
HARNESS CONNECTOR:
COMPONENT SIDE
AK303016
104
96
94
95
93 92 91
99 98 97
103 102 101 100
108 107 106 105
113 112 111 110 109
CONNECTOR: B-22
B-22 (B)
PCM
AB
HARNESS CONNECTOR:
COMPONENT SIDE
AIR CLEANER
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-576
STEP 10. Measure the power supply voltage at camshaft
position sensor connector B-106.
(1) Disconnect the connector B-106 and measure at the
harness side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal No. 3 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 12.
NO : Go to Step 11.
STEP 11. 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 camshaft position sensor
connector B-106 (terminal No. 3) because of open
circuit or short circuit to ground. Then go to Step 20.
NO : Repair or replace it. Refer to GROUP 00E, Harness
. Then go to Step 20.
AK303863
1
2
3
AB
CONNECTOR: B-106
B-106 (B)
HARNESS CONNECTOR:
COMPONENT SIDE
AKX01422
B-106 HARNESS
CONNECTOR:
COMPONENT SIDE
3 2 1
AH
AK303806
2
1
3
4
AB
CONNECTOR: B-17X
B-17X
RELAY BOX
TRIANGLE
MARK
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-577
STEP 12. Check the continuity at camshaft position sensor
connector B-106.
(1) Disconnect the connector B-106 and measure at the
harness side.
(2) Check for the continuity between terminal No. 1 and
ground.
• Should be less than 2 ohms.
Q: Does continuity exist?
YES : Go to Step 15.
NO : Go to Step 13.
STEP 13. Check harness connector B-22 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 go to Step 20.
AK303863
1
2
3
AB
CONNECTOR: B-106
B-106 (B)
HARNESS CONNECTOR:
COMPONENT SIDE
AKX01423
B-106 HARNESS
CONNECTOR:
COMPONENT SIDE
3 2 1
AF
AK303016
104
96
94
95
93 92 91
99 98 97
103 102 101 100
108 107 106 105
113 112 111 110 109
CONNECTOR: B-22
B-22 (B)
PCM
AB
HARNESS CONNECTOR:
COMPONENT SIDE
AIR CLEANER
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