Mitsubishi Outlander (2003+). Manual - part 60
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MFI)
13A-103
OPERATION
Power is supplied to the injector (terminal No. 1)
from the engine control relay (terminal No. 1).
The engine-ECU (terminal No. 15) makes the
power transistor in the unit be in "ON" position,
and that makes currents go on the injector (termi-
nal No. 2).
FUNCTION
The engine-ECU controls the power supply inter-
val of the injector.
The fuel injection amount of the injector depends
on the power supply interval.
TROUBLE JUDGMENT
Check Conditions
The engine speed is 50
-
1,000 r/mim.
The throttle position sensor output 1.15 V or less.
Injector not in forced drive (actuator test) mode
Judgment Criterion
No surge voltage of the injector coil is detected
for 2 seconds
PROBABLE CAUSE
Failed No. 4 injector
Open/short circuit in No. 4 injector circuit or loose
connector contact
Failed engine-ECU
DIAGNOSIS PROCEDURE
STEP 1. MUT-II actuator test
Refer to Actuator test reference table list
.
a. Item 04: No. 4 injector
OK: Idling state varies.
Q: Is the check result normal?
YES :
Intermittent malfunction (Refer to GROUP
00
-
How to Use
Troubleshooting/Inspection Service Points
).
NO :
Go to Step 2 .
STEP 2. Connector check: B-05 No. 4 injector
connector
Q: Is the check result normal?
YES :
Go to Step 3 .
NO :
Repair.
STEP 3. Measure resistance at B-05 No. 4 injector
connector.
Disconnect connector, and measure at injector
side.
Resistance between terminal No. 1 and No. 2.
OK: 10.5
-
13.5
W
Q: Is the check result normal?
YES :
Go to Step 4 .
NO :
Replace No. 4 injector.
AK300265
M
1
2
Harness side connector
Connector: B-05
AF
B-05 (GR)
AK300265
M
1
2
Harness side connector
Connector: B-05
AF
B-05 (GR)