Explanation Of First Start Function
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Information
After working on the fuel system, air in the system makes it more difficult to build up fuel high pressure.
The First start function saves time by:
- Starting at low pressure.
- Displaying the fuel high pressure diagnosis.
- Allowing air to escape more quickly via the injectors.
- Preventing fault entries or replacement measures while pressure is building up.
Run the First start function following all removal and installation work on the high-pressure system if the fuel system was opened.