|
|
Fuel Charging and Controls - TD4 2.2L Diesel - 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 (303-04B Fuel Charging and Controls - TD4 2.2L Diesel, Description and Operation) / Turbocharger (303-04C Fuel Charging and Controls - Turbocharger - TD4 2.2L Diesel, 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 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 Fuel level Check fuel level and for contamination. Check fuel and air intake Difficult to start Fuel level Check fuel level and for contamination. Check fuel and air intake Rough idle Low/contaminated fuel Check fuel level/condition. Check integrity of fuel and engine control Lack of power under Contaminated fuel Check for fuel contamination. Check for DTCs and refer to relevant Engine stops/stalls Low/contaminated fuel Check for fuel contamination. Check for DTCs and refer to the relevant |