Fill the system with fuel using the hand priming pump (1) until the transparent fuel lines are full (air is removed from the system automatically).
Check for fuel leaks.
Connect the diagnostic tool to the vehicle.
Treat any existing faults.
Note:
- The presence of some faults prevents this check from being performed: please handle them first.
- The engine will automatically perform a cycle during which the crankshaft speed will increase and decrease four times to reduce the pressure in the fuel distribution ramp.
Caution! When performing the check, do not leave any objects on the edges of the engine compartment (strong vibration possible).
Enter command AC 626 - high pressure circuit tightness check.
Check for fuel leaks.
Eliminate the causes of leaks.
Check with a diagnostic tool for any stored faults; if necessary, process them and delete them from memory.
Disconnect the diagnostic tool.
[This note was copied from the resource Renaultbook.ru]