Mitsubishi Galant (2004+). Manual - part 868
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-289
STEP 3. Measure the power supply voltage at cylinder 1, 4
heated oxygen sensor (rear) harness side connector B-38.
(1) Disconnect the connector B-38 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 5.
NO : Go to Step 4.
STEP 4. Check harness connector B-17X at the 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 cylinder 1, 4 heated
oxygen sensor (rear) connector B-38 (terminal No. 1)
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.
AK303826
1
2
3
4
AB
HARNESS
CONNECTOR:
COMPONENT SIDE
CONNECTOR: B-38
B-38 (B)
CYLINDER 1, 4
HEATED OXYGEN
SENSOR (REAR)
AKX01498
B-38 HARNESS
CONNECTOR:
COMPONENT SIDE
1
2
3
4
BH
AK303806
2
1
3
4
AB
CONNECTOR: B-17X
B-17X
RELAY BOX
TRIANGLE
MARK
HARNESS CONNECTOR:
COMPONENT SIDE