2 - 4Chapter 2 Operation of Diag.3.2 Entering diag. Customer mode1) The power is turned off.2) The power is turned on while holding down “ T ” and “ S ” keys.3) Release the keys when “Diagnosing” is displayed.4) The “Customer Mode” and “ESS” are displayed. (Entered the diag.)3.3 Selecting Diag. itemThe diag. setting items are configured as menus, which can be operated with the control panelkeys. Arrow keys select menu items and “ ” key activates functions.3.4 Change method parameters valueFor parameter setting, pressing “ ” key after selecting an item from the menu displays thecurrent setting value of the item. Then a numeric value selected by “ T ” and “ S ” keys arewritten into the NVM by “ ” key.3.5 Executing/Exiting Diag. modeThe diagnosis can be executed by as follows.1) A test item is displayed. “ ” key fixed the test item.2) The display prompts the user to start the test. Press “ ” key and start the test.The diagnosis can be stopped by as follows.1) During the diagnosis test, press “ CANCEL ” key.2) The diagnosis is stopped, and the display indicates the first item of the menu.If an error occurs during the diag. sequence, the diagnosis displays the error and stops,leaving the remaining items unperformed.Pressing “ CANCEL ” or “ ” key releases the error display, and then the menu items aredisplayed.