69J3D11 9-28123456789Operating the electric fuel pump:A voltage is applied to the electric fuel pump, the electric fuel pump is operated, and then the fuelsystem is checked. The electric fuel pump is operated for ten seconds.WARNING• Do not perform the test with the injector removed from the cylinder head or with any fuelsystem parts removed. High-pressure fuel may spurt out.• When performing this operation, keep all sparks, flames, or other sources of ignition awayfrom the testing area. Gasoline is highly flammable.NOTE:Make sure that there is fuel in fuel tank, otherwise an error will occur and the test cannot be per-formed.1. Select the test to be performed, and then click the Select button or press the Enter key on yourkeyboard. (Fig. 33)Fig. 33NOTE:• Make sure that the engine is not running.• The selected item is highlighted in light blue.• The details of the selected test are displayed in the column on the right, and the items that mustbe either checked or performed before the test can start are displayed below the table.• Only one item can be selected at one time.Yamaha Diagnostic System
