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Fuel Charging and Controls - I6 3.2L Petrol - Fuel Charging and Controls Diagnosis and Testing Principles of Operation For a detailed description of the fuel charging and controls, refer to the relevant Description and Operation section in the Fuel Charging and Controls (303-04A Fuel Charging and Controls - I6 3.2L Petrol, Description and Operation). Inspection and Verification CAUTION: Diagnosis by substitution from a donor vehicle is NOT acceptable. Substitution of control modules does not guarantee confirmation of a fault, and may also cause additional faults in the vehicle being tested and/or the donor • NOTE: For diagnostic purposes the cylinders are divided into two banks: Bank 1 - Cylinder numbers 1, 2 and 3. Bank 2 - 1. Verify the customer concern. 1. 2. Visually inspect for obvious signs of mechanical or electrical damage. 2. Visual Inspection Mechanical Electrical Fuel level Fuses 3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step 3. 4. If the cause is not visually evident, verify the symptom and refer to the Symptom Chart, alternatively, check for Diagnostic Trouble Codes (DTCs) and refer to the DTC Index. 4. Symptom Chart Symptom Possible Cause Action Engine cranks, but does not fire Engine breather system Ensure the engine breather system is Engine Ignition (303-07A Engine Ignition, Diagnosis and Testing). Fuel Tank and Lines (310-01A Fuel Tank and Lines - I6 3.2L Petrol, Electronic Engine Controls (303-14A Electronic Engine Controls - I6 Engine cranks and fires, but will Evaporative emissions purge For purge valve tests. Evaporative Emissions (303-13 Evaporative Emissions, Diagnosis and Fuel Tank and Lines (310-01A Fuel Tank and Lines - I6 3.2L Petrol, Engine Ignition (303-07A Engine Ignition, Diagnosis and Testing). Difficult cold start Engine coolant level/anti- Check the engine coolant level and Specifications (303-03A Engine Cooling - I6 3.2L Petrol, |