A Symptoms

Symptoms - Engine Controls


Important Preliminary Checks Before Starting

Perform Diagnostic System Check - Engine Controls before using the Symptom Tables, and verify that all of the following conditions are true:

- The PCM and the MIL Service Engine Soon indicators are operating correctly.

- No DTCs are stored.

- Ensure that the engine coolant temperature is not above 132°C (270°F). This condition causes the PCM to operate in Engine Coolant Over Temperature-Fuel Disabled Mode. While in Engine Coolant Over Temperature-Fuel Disabled Mode, the PCM turns fuel oft to 4 cylinders at a time in order to keep the engine temperatures from reaching damaging levels. The customer perceives the Engine Coolant Over Temperature-Fuel Disabled Mode as a lack of power, a miss, or a rough idle. If the engine operates in the Engine Coolant Over Temperature-Fuel Disabled Mode.

- The scan tool data is within the normal operating range.

- Verify the customer's concern. Locate the correct symptom in the table of contents. Inspect the conditions indicated for that symptom.

- Several of the symptom procedures require a thorough inspection. This step can lead to correcting a condition without further inspections, and can save valuable time.

- If the condition exists as a start and stall, search for the DTCs that are related to the vehicle theft deterrent system. Inspect for improper installation of electrical options such as lights or cellular phones.

- When you diagnose a symptom concern, use the following tables.

- If you cannot isolate the condition with the appropriate table, refer to Intermittent Conditions for further diagnosis.

Intermittent Conditions 1 of 2:

Intermittent Conditions 2 of 2: