Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 316
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-463
STEP 2. Using scan tool MB991502, check actuator test
items 01, 02, 03, 04, 05, 06: Injector.
(1) Turn the ignition switch to the "ON" position.
(2) Check following items in the actuator test. Refer to, Actuator
Test Table (
a. Item 01, 02, 03, 04, 05, 06: Injector.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the actuator operating properly?
YES : Go to Step 3.
NO : Refer to, DTC P0201,P0203,P0205
−
Injector Circuit
Malfunction (
), DTC P0202,P0204, P0206
−
Injector Circuit Malfunction (
STEP 3. Check the ignition timing.
Refer to GROUP 11C, On-vehicle Service
−
Ignition Timing
Check (
Q: Is the ignition timing normal?
YES : Go to Step 4.
NO : Check that the crankshaft position sensor and timing
belt cover are in the correct position. Then confirm
that the malfunction symptom is eliminated.
STEP 4. Using scan tool MB991502, check data list.
CAUTION
To prevent damage to scan tool MB991502, always turn the
ignition switch to the "LOCK" (OFF) position before
connecting or disconnecting scan tool MB991502.
(1) Connect scan tool MB991502 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Check the following items in the data list. Refer to, Data List
Reference Table (
a. Item 13: Intake Air Temperature Sensor.
b. Item 25: Barometric Pressure Sensor.
c. Item 21: Engine Coolant Temperature Sensor.
d. Item 14: Throttle Position Sensor.
e. Item 69: Right Bank Heated Oxygen Sensor (rear)
f. Item 39: Right Bank Heated Oxygen Sensor (front)
g. Item 59: Left Bank Heated Oxygen Sensor (rear)
h. Item 11: Left Bank Heated Oxygen Sensor (front)
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Are they operating properly?
YES : Go to Step 5.
NO : Repair or replace. Then confirm that the malfunction
symptom is eliminated.
AKX01177
16 PIN
MB991502
AB
AKX01177
16 PIN
MB991502
AB
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-464
STEP 5. Using scan tool MB991502, check actuator test.
(1) Turn the ignition switch to the "ON" position.
(2) Check the following items in the actuator test. Refer to,
Actuator Test Reference Table (
).
a. Item 10: EGR Solenoid.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Are they operating properly?
YES : Go to Step 6.
NO : Repair or replace. Then confirm that the malfunction
symptom is eliminated.
STEP 6. Using scan tool MB991502, check data list.
(1) Turn the ignition switch to the "ON" position.
(2) Check the following items of data list. Refer to, Data List
Reference Table (
a. Item 39: Right Bank Heated Oxygen Sensor (front)
b. Item 11: Left Bank Heated Oxygen Sensor (front)
•
Voltage should fluctuate between 0
−
0.4 volts and 0.6 -
1.0 volts while idling after the engine has been warmed.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the sensor operating properly?
YES : Go to Step 8.
NO : Go to Step 7.
STEP 7. Check the fuel pressure.
Refer to, Fuel Pressure Test (
Q: Is the fuel pressure normal?
YES : Check the following items, and repair or replace the
defective items.
a. Vacuum leak.
•
Broken intake manifold gasket.
•
Broken air intake hose.
•
Broken vacuum hose.
•
Positive crankcase ventilation valve does
not operate.
b. Injector clogged.
Then confirm that the malfunction symptom is
eliminated.
NO : Repair or replace. Then confirm that the malfunction
symptom is eliminated.
AKX01177
16 PIN
MB991502
AB
AKX01177
16 PIN
MB991502
AB
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-465
STEP 8. Check the fuel pressure.
Refer to, Fuel Pressure Test (
Q: Is the fuel pressure normal?
YES : Check the following items, and repair or replace the
defective items.
a. Check the ignition coil, spark plugs, spark plug
cables.
b. Check compression pressure.
c. Check the fuel filter or fuel line for clogging.
d. Broken air intake hose.
e. Clogged air cleaner.
f. Clogged exhaust system.
Then confirm that the malfunction symptom is
eliminated.
NO : Repair or replace. Then confirm that the malfunction
symptom is eliminated.
INSPECTION PROCEDURE 19: Surge.
COMMENT
•
Defective ignition system, abnormal air/fuel ratio,
etc. are suspected.
TROUBLESHOOTING HINTS (The most likely
causes for this case:)
•
Malfunction of the ignition system.
•
Malfunction of air/fuel ratio control system.
•
Malfunction of the EGR solenoid system.
DIAGNOSIS
Required Special Tool:
MB991502: Scan Tool (MUT-II)
STEP 1. Using scan tool MB991502, read the diagnostic
trouble code (DTC).
CAUTION
To prevent damage to scan tool MB991502, always turn the
ignition switch to the "LOCK" (OFF) position before
connecting or disconnecting scan tool MB991502.
(1) Connect scan tool MB991502 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Read the DTC.
(4) Turn the ignition switch to the "ON" position.
Q: Is the DTC is output?
YES : Refer to, Diagnostic Trouble Code Chart (
NO : Go to Step 2.
AKX01177
16 PIN
MB991502
AB
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-466
STEP 2. Using scan tool MB991502, check actuator test
items 01, 02, 03, 04, 05, 06: Injector.
(1) Turn the ignition switch to the "ON" position.
(2) Check following items in the actuator test. Refer to, Actuator
Test Reference Table (
).
a. Item 01, 02, 03, 04, 05, 06: Injector.
(3) Turn the ignition switch to the "ON" position.
Q: Is the actuator operating properly?
YES : Go to Step 3.
NO : Refer to, DTC P0201,P0203,P0205
−
Injector Circuit
Malfunction (
), DTC P0202, P0204, P0206
−
Injector Circuit Malfunction (
STEP 3. Check the ignition timing.
Refer to GROUP 11C, On-vehicle Service
−
Ignition Timing
Check (
Q: Is the ignition timing normal?
YES : Go to Step 4.
NO : Check that the crankshaft position sensor and timing
belt cover are in the correct position. Then confirm
that the malfunction symptom is eliminated.
STEP 4. Using scan tool MB991502, check data list.
CAUTION
To prevent damage to scan tool MB991502, always turn the
ignition switch to the "LOCK" (OFF) position before
connecting or disconnecting scan tool MB991502.
(1) Connect scan tool MB991502 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Check the following items in the data list. Refer to, Data List
Reference Table (
a. Item 13: Intake Air Temperature Sensor.
b. Item 25: Barometric pressure Sensor.
c. Item 21: Engine Coolant Temperature Sensor.
d. Item 14: Throttle Position Sensor.
e. Item 69: Right Bank Heated Oxygen Sensor (rear)
f. Item 39: Right Bank Heated Oxygen Sensor (front)
g. Item 59: Left Bank Heated Oxygen Sensor (rear)
h. Item 11: Left Bank Heated Oxygen Sensor (front)
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Are they operating properly?
YES : Go to Step 5.
NO : Repair or replace. Then confirm that the malfunction
symptom is eliminated.
AKX01177
16 PIN
MB991502
AB
AKX01177
16 PIN
MB991502
AB
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