Mitsubishi Eclipse. Manual - part 613
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-995
STEP 14. Using scan tool MB991958, check data list item
59: Left Bank Heated oxygen sensor (rear).
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 data reading mode for item
59, Left Bank Heated Oxygen Sensor (rear).
• Average voltage should be 0.6 volt or less, when idling.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the sensor operating properly?
YES : Go to Step 16.
NO : Replace the left bank heated oxygen sensor (front).
Then confirm that the malfunction symptom is
eliminated.
STEP 15. Check the fuel pressure.
Refer to, Fuel Pressure Test
Q: Is the fuel pressure normal?
YES : Go to Step 16.
NO : Repair or replace. Then confirm that the malfunction
symptom is eliminated.
STEP 16. Check the following items.
(1) Check the following items, and repair or replace the
defective items.
a. Check the injectors for fuel leakage.
b. Check the ignition coil, spark plugs, spark plug cables.
c. Check compression pressure.
d. Check the positive crankcase ventilation system.
e. Check the evaporative emission system.
(2) Then check the malfunction symptom.
Q: Is the malfunction symptom is eliminated?
YES : The check is completed.
NO : Replace the catalytic converter. Then confirm that the
malfunction symptom is eliminated.
AK300810
AB
MB991911
16-PIN
MB991827
MB991824