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Home >> Mitsubishi >> 2000 >> Eclipse RS L4-2350cc 2.4L SOHC MFI >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> Inspection Procedure 6
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Inspection Procedure 6

COMMENT
- In such cases as "Fires Up and Dies" the cause is usually improper air/fuel mixture. It is possible, though less likely, that the spark plugs are generating sparks but the sparks are weak.

TROUBLESHOOTING HINTS
The most likely causes for this case:
- Malfunction of the ignition system.
- Malfunction of the injector system.
- Contaminated fuel.
- Poor compression.
- Malfunction of the ECM .
- Malfunction of the PCM .
- Malfunction of the immobilizer system.

DIAGNOSIS
Required Special Tool:
MB991502: Scan Tool (MUT-II)

1. Check the Battery positive voltage.
Measure the Battery positive voltage during cranking.
- The voltage should be 8 volts or more.

If the voltage is 8 volts or more, go to Step 2.
If the voltage is less than 8 volts, check the battery. Then confirm that the malfunction symptom is eliminated.

CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502.




2. Using scan tool MB991502, read the immobilizer system diagnostic trouble code (DTC).
1. Connect scan tool MB991502 to the data link connector.
2. Turn the ignition switch to "ON" position.
3. Read the immobilizer system DTC.

If immobilizer system DTC is not output, go to Step 3.
If immobilizer system DTC is output, refer to Ignition Switch and Immobilizer System - Diagnosis.




3. Using scan tool MB991502, read the diagnostic trouble code (DTC).
1. Connect scan tool MB991502 to the data link connector.
2. Turn the ignition switch to "ON" position.
3. Read the DTC.

If DTC is not output, go to Step 4.
If DTC is output, refer to Diagnostic Trouble Code Chart.




4. Using scan tool MBB991502, check data list and actuator test.
1. Check the following items in the actuator test.
Refer to Actuator Test Reference Table.
a. Item 07: Fuel Pump.

2. Check the following items in the data list.
Refer to Data List Reference Table.
a. Item 21: Engine Coolant Temperature Sensor.
b. Item 18: Ignition Switch-ST.

If the checks above meet the specifications, go to Step 5.
If the checks above do not meet the specifications, repair or replace. Then confirm that the malfunction symptom is eliminated.




5. Check the injector for operation sound.
Using a stethoscope or long blade screwdriver, check the operation sound ("tick-tick-tick") of injectors during cranking.
- An operation sound should be heard.

If a sound is heard, go to Step 6.
If no sound is heard, refer to DTC P0201, P0202, P0203, P0204 - Injector Circuit Malfunction.

6. Check the engine start-ability.
Depress the accelerator pedal slightly, and start the engine.

If startability is good, go to Step 7.
If startability is poor, go to Step 8.




7. Check the idle air control (IAC) motor operation sound.
1. Check that the engine coolant temperature is 20°C (68°F) or below.

NOTE: If necessary, you can disconnect the engine coolant temperature sensor connector and connect the harness side of the connector to another engine coolant temperature sensor that is at 20°C (68°F) or below

2. Check that an operation sound of the IAC motor can be heard after the ignition is switched "ON" position (but without starting the engine).
An operation sound is heard.

If no sound is heard, refer to DTC P0505 - Idle Control System Malfunction.
If a sound is heard, clean the throttle valve area.

After cleaning or adjusting, confirm that the malfunction symptom is eliminated.

8. Check the ignition timing.
Check the timing belt during cranking.

Standard value: 5° ±3° BTDC

If within specifications, go to Step 9.
If not within the specifications, check that the crankshaft position sensor and timing belt cover are in the correct position. Then confirm that the malfunction symptom is eliminated.

9. Check the following items.
Check the following items, and repair or replace the defective items.
a. Check the ignition coils, spark plugs, spark plug cables.
b. Check if the injectors are clogged.
c. Check compression.
d. Check fuel lines for clogging.
e. Check if the foreign materials (water, kerosene, etc.) got into fuel.

Then confirm that the malfunction symptom is eliminated.
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