Inspection and Verification

Inspection And Verification

1. Verify the customer concern.
2. Visually inspect for obvious mechanical faults.

Mechanical
^ Engine breather hoses
^ Oil separators
^ Positive crankcase ventilation valve

3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
4. Use the approved diagnostic system or a scan tool to retrieve any diagnostic trouble codes (DTCs) before moving onto the symptom chart.
^ Make sure that all DTCs are cleared the rectification.
^ For a full list of ECM DTCs.